Natural Resources
Conservation Service
Major Land Resource Area 034B
Major Land Resource Area
Accessed: 04/02/2026
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Description
MLRA 34B occurs in is in Utah (70 percent) and Colorado (30 percent). It makes up about 12,850 square miles (33,290 square kilometers). A small part of the area is in the High Plateaus of Utah Section of the Colorado Plateaus Province of the Intermontane Plateaus. The northern part of the MLRA occurs in the Uinta Basin Section, which is bounded by the Uinta Mountains to the north, the Wasatch Range to the west, the Roan Plateau to the south, and the Rabbit Hills to the east. The southern part of the MLRA occurs in the northern third of the Canyon Lands Section. This section is bounded by the Roan Plateau to the north, the Wasatch Plateau to the west, the southern end of the San Rafael Swell to the south, and the western slope of the Rocky Mountains to the east. Elevation ranges from 4,100 feet (1,250 meters) near Green River, Utah, to 7,500 feet (2,285 meters) at the base of the Wasatch Range and the Roan Plateau. Most of this area is covered by residual basin-floor materials and materials washed in from the surrounding mountains and plateaus. Shale and sandstone are the dominant rock types. The Tertiary-age Green River, Uinta, and Duchesne Formations dominate the northern part of the MLRA. The southern part is dominated by Cretaceous-age materials with lesser amounts of Jurassic and Triassic materials. The dominant Cretaceous formations are Mancos Shale, Dakota Sandstone, and the members of the Mesa Verde Group. The dominant Jurassic formations are the Morrison, Entrada, and Navajo. The dominant Triassic formations are the Chinle and Moenkopi. Quaternary alluvial, eolian, and glacial deposits occur in both parts of the MLRA. The average annual precipitation in most of this area ranges from 6 to 10 inches (150 to 255 millimeters). A small part of this area receives as much as 24 inches of annual precipitation. Much of the precipitation occurs as high-intensity, convective thunderstorms during the period July through September. May and June are usually the drier months. Precipitation is more evenly distributed throughout the year in the northern part of the MLRA than in the southern part, where there is a significant peak in late summer. The northern part of the MLRA receives more precipitation as snow during winter than the southern part. The average annual temperature ranges from 41 to 54 degrees F (5 to 12 degrees C). The freeze-free period averages 170 days and ranges from 110 to 235 days. The dominant soil orders in this MLRA are Aridisols and Entisols. Mollisols occur at the higher elevations, particularly in the northern part of the MLRA. The dominant soil temperature regime is mesic, and the dominant soil moisture regime is aridic. The soils receiving less than 8 inches (205 millimeters) of precipitation annually have an aridic soil moisture regime. The soils receiving 8 to 12 inches (205 to 305 millimeters) have an aridic soil moisture regime that borders on ustic. The soils receiving 12 to 16 inches (305 to 405 millimeters) generally have an ustic soil moisture regime that borders on aridic. The dominant soil mineralogy is mixed and soils are formed in slope alluvium or residuum derived from shale or sandstone. Many of the soils are shallow or moderately deep to shale or sandstone bedrock. The soils at the lower elevations generally have significant amounts of calcium carbonate, salts, and gypsum.
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i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
-
i
Key Characteristics
- Site located south of the Columbia River.
- . Located within Crater Lake National Park Refer to LRU F (or 6) Key (Mazama Cascades).
- Site located within Crater Lake National Park
- Located below timberline
- Otherwise; forested communities typical
- Otherwise
- High-elevation sites; natural fire regime is stand-replacing, estimated fire return interval >200 years; mountain hemlock forest typical
- . South-facing slopes; droughty in summer High Cascades Dry (F003XY705OR)
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Soil texture
Site receives no extra water beyond normal precipitation.
Site receives extra water beyond normal precipitation through high water table, riparian area, or run-in water.
Greater than 12" annual precipitation.
Less than 12" annual precipitation.
Site receives 12-16" annual precipitation.
Site receives more than 18" annual precipitation. Wrong MLRA.
Upland Ecological Zone.
Site does not have a restrictive layer within 60" of soil surface.
Site has a restrictive layer within 60" of the soil surface; soil may be shallow to moderately deep.
Slope greater than 50%.
R034BY344UT – Upland Very Steep Stony Loam (Pinyon-Utah Juniper)
R034BY344UT – Upland Very Steep Stony Loam (Pinyon-Utah Juniper)
Slope less than 50%.
Surface soil texture is loamy.
Surface soil texture loam.
R034BY306UT – Upland Loam (Wyoming Big Sagebrush)
R034BY306UT – Upland Loam (Wyoming Big Sagebrush)
Surface soil texture silt loam.
R034BY329UT – Upland Silt Loam (Fourwing saltbush/Winterfat)
R034BY329UT – Upland Silt Loam (Fourwing saltbush/Winterfat)
Site not as above. Unclassified.
Soil is moderately deep (restrictive layer between 20-60").
Soil is shallow (restrictive layer above 20").
Slope is greater than 50%.
Slope is less than 50%.
Rock fragment in the top 24" is less than 50% by volume.
R034BY338UT – Upland Very Steep Loam (Pinyon-Utah Juniper)
R034BY338UT – Upland Very Steep Loam (Pinyon-Utah Juniper)
Dominant plant is Wyoming big sagebrush, but if pinyon or Utah juniper is present, trees are generally less than 200 years old.
R034BY334UT – Upland Stony Loam (Wyoming big sagebrush)
R034BY334UT – Upland Stony Loam (Wyoming big sagebrush)
Dominant plants are pinyon and Utah juniper. Trees are predominantly old (greater than 200 years old).
R034BY330UT – Upland Stony Loam (Pinyon-Utah Juniper)
R034BY330UT – Upland Stony Loam (Pinyon-Utah Juniper)
Soil surface texture is clay loam or silty clay loam with western wheatgrass being the dominant aspect on the site.
R034BY302UT – Upland Clay (Western Wheatgrass)
R034BY302UT – Upland Clay (Western Wheatgrass)
Site not as above. Unclassified.
Slope is generally greater than 50%.
Slope is generally less than 50%.
Surface soil texture is clay loam.
R034BY340UT – Upland Very Steep Shallow Clay Loam (Utah Juniper-Pinyon)
R034BY340UT – Upland Very Steep Shallow Clay Loam (Utah Juniper-Pinyon)
Surface texture is loam.
R034BY342UT – Upland Very Steep Shallow Loam (Pinyon-Utah Juniper)
R034BY342UT – Upland Very Steep Shallow Loam (Pinyon-Utah Juniper)
Site not as above. Unclassified.
Surface soil texture is clay loam.
R034BY315UT – Upland Shallow Clay Loam (Utah Juniper-Pinyon)
R034BY315UT – Upland Shallow Clay Loam (Utah Juniper-Pinyon)
Surface texture is loam.
Dominant plant is black sagebrush, but if pinyon or Utah juniper is present, trees are generally less than 200 years old.
R034BY320UT – Upland Shallow Loam (Black Sagebrush)
R034BY320UT – Upland Shallow Loam (Black Sagebrush)
Dominant plants are pinyon and Utah juniper. Trees are predominantly old (greater than 200 years old).
R034BY322UT – Upland Shallow Loam (Two-Needle Pinyon / Utah Juniper)
R034BY322UT – Upland Shallow Loam (Two-Needle Pinyon / Utah Juniper)
Site not as above. Unclassified.
Site receives 8-12" annual precipitation.
Site receives 4-8" annual precipitation, generally dominated by salt desert shrub communities.
Semidesert Ecological Zone.
Restrictive layer not present within 60" of the soil surface.
Restrictive layer present within 60" of soil surface, soil is shallow to moderately deep.
Rock fragments over 3" on the soil surface are less than 15% by volume.
Rock fragments over 3" on the soil surface are greater than 15% by volume.
Surface soil texture is fine, either loam, silt loam, or clay loam.
Surface soil texture coarse, sand or sandy loam.
Rock fragments are greater than 35% by volume in the top 24".
R034BY205UT – Semidesert Gravelly Loam (Wyoming Big Sagebrush)
R034BY205UT – Semidesert Gravelly Loam (Wyoming Big Sagebrush)
Rock fragments are less than 35% by volume in the top 24".
Surface soil texture loam.
R034BY212UT – Semidesert Loam (Wyoming Big Sagebrush)
R034BY212UT – Semidesert Loam (Wyoming Big Sagebrush)
Surface soil texture silt loam.
R034BY240UT – Semidesert Silt Loam (Winterfat)
R034BY240UT – Semidesert Silt Loam (Winterfat)
Surface soil texture clay loam.
R034BY248UT – Semidesert Very Steep Loam (Shadscale)
R034BY248UT – Semidesert Very Steep Loam (Shadscale)
Site not as above. Unclassified.
Rock fragments are greater than 35% by volume in the top 24".
R034BY206UT – Semidesert Gravelly Sandy Loam (Wyoming Big Sagebrush)
R034BY206UT – Semidesert Gravelly Sandy Loam (Wyoming Big Sagebrush)
Rock fragments are less than 35% by volume in the top 24".
R034BY216UT – Semidesert Sandy Loam (Fourwing Saltbush)
R034BY216UT – Semidesert Sandy Loam (Fourwing Saltbush)
Coarse fragments over 65% by volume in the top 24", coarse fragments also over 24" in diameter.
R034BY202UT – Semidesert Bouldery Loam (Shadscale)
R034BY202UT – Semidesert Bouldery Loam (Shadscale)
Coarse fragments less than 65% by volume in the top 24".
Site not as above. Unclassified.
Soil surface textures are very stony loam, very cobbly loam or very stony fine sandy loam.
R034BY247UT – Semidesert Stony Loam (Utah Juniper-Pinyon)
R034BY247UT – Semidesert Stony Loam (Utah Juniper-Pinyon)
Soil surface textures are stony loam, cobbly sandy clay loam or very cobbly sandy loam. Coarse fragments on this site are basalt.
R034BY404CO – Semidesert Stony Loam (Shadscale)
R034BY404CO – Semidesert Stony Loam (Shadscale)
Soil moderately deep, restrictive layer greater than 20" from soil surface.
Soil shallow, restrictive layer less than 20" from the soil surface.
Soil contains obvious gypsum.
Soil doesn't contain an obvious gypsum component.
Plant dominated by Mormon tea.
R034BY207UT – Semidesert Gypsum (Mormontea)
R034BY207UT – Semidesert Gypsum (Mormontea)
Dominant plants are juniper and pinyon.
R034BY208UT – Semidesert Gypsum (Juniper/Pinyon)
R034BY208UT – Semidesert Gypsum (Juniper/Pinyon)
Site not as above. Unclassified.
Slopes at the site are steep, greater than 50%.
Slopes at the site are less than 50%.
Rocks are generally flat and less than 6" in diameter.
R034BY253UT – Semidesert Very Steep Loam (Utah Juniper - Pinyon)
R034BY253UT – Semidesert Very Steep Loam (Utah Juniper - Pinyon)
Rocks are generally 10-24" in diameter.
Rocks on soil surface smaller than 3" are less than 15% by volume.
R034BY250UT – Semidesert Very Steep Loam (Salina Wildrye)
R034BY250UT – Semidesert Very Steep Loam (Salina Wildrye)
Rocks on the soil surface smaller than 3" are greater than 15% by volume.
R034BY251UT – Semidesert Very Steep Loam (Wyoming big sagebrush)
R034BY251UT – Semidesert Very Steep Loam (Wyoming big sagebrush)
Site not as above. Unclassified.
Surface soil texture clay or clay loam.
Surface soil texture is other than clay or clay loam.
Surface soil texture clay.
R034BY203UT – Semidesert Clay (Shadscale)
R034BY203UT – Semidesert Clay (Shadscale)
Surface soil texture clay loam.
R034BY328CO – Semidesert Clay Loam
R034BY328CO – Semidesert Clay Loam
Surface soil texture sand.
R034BY214UT – Semidesert Sand (Fourwing Saltbush)
R034BY214UT – Semidesert Sand (Fourwing Saltbush)
Surface soil texture is loamy or sandy loam.
Soil profile contains less than 35% by volume rock fragments in the top 24".
Soil profile contains greater than 35% by volume rock fragments in the top 24". Unclassified.
Dominant plant is salina wildrye.
R034BY209UT – Semidesert Loam (Salina wildrye)
R034BY209UT – Semidesert Loam (Salina wildrye)
Site not as above. Unclassified.
Slope is less than 50%.
Slope is greater than 50%.
Surface soil texture is clay loam.
Surface soil texture is coarser, loam or sandy loam.
Soil surface has greater than 10% cover of rock fragments.
R034BY221UT – Semidesert Shallow Clay (Utah Juniper)
R034BY221UT – Semidesert Shallow Clay (Utah Juniper)
Surface soil texture is sandy loam.
R034BY239UT – Semidesert Shallow Sandy Loam (Utah Juniper/Two-Needle Pinyon)
R034BY239UT – Semidesert Shallow Sandy Loam (Utah Juniper/Two-Needle Pinyon)
Surface soil texture is loam.
Utah juniper present and trees are old (most are more than 200 years old).
R034BY233UT – Semidesert Shallow Loam (Utah Juniper-Pinyon)
R034BY233UT – Semidesert Shallow Loam (Utah Juniper-Pinyon)
Utah juniper trees may be present but most trees are young (less than 200 years old).
Dominant plant is grass (salina wildrye).
R034BY230UT – Semidesert Shallow Loam (Salina Wildrye)
R034BY230UT – Semidesert Shallow Loam (Salina Wildrye)
Dominant plant is a shrub.
Dominant plant is Wyoming big sagebrush.
R034BY225UT – Semidesert Shallow Loam (Wyoming big sagebrush)
R034BY225UT – Semidesert Shallow Loam (Wyoming big sagebrush)
Dominant plant is black sagebrush.
R034BY227UT – Semidesert Shallow Loam (Black Sagebrush)
R034BY227UT – Semidesert Shallow Loam (Black Sagebrush)
Site not as above. Unclassified.
Surface soil texture is clay.
R034BY255UT – Semidesert Very Steep Shallow Clay (Utah Juniper)
R034BY255UT – Semidesert Very Steep Shallow Clay (Utah Juniper)
Surface soil texture is loam.
Utah juniper present and trees old (most are more than 200 years old).
R034BY259UT – Semidesert Very Steep Shallow Loam (Utah Juniper-Pinyon)
R034BY259UT – Semidesert Very Steep Shallow Loam (Utah Juniper-Pinyon)
Utah juniper trees may be present but most trees are young (less than 200 years old).
Desert Ecological Zone.
Restrictive layer not present within 60" of the soil surface.
Restrictive layer present within 60" of the soil surface, soil is shallow to moderately deep.
Surface soil non-saline (0-2 mmhos/cm EC).
Surface soil very slightly saline to strongly saline (2-16 mmhos/cm EC).
Surface soil is loamy.
R034BY106UT – Desert Loam (Shadscale)
R034BY106UT – Desert Loam (Shadscale)
Surface soil is sandy.
Dominant plant is fourwing saltbrush.
R034BY112UT – Desert Sand (Fourwing Saltbush)
R034BY112UT – Desert Sand (Fourwing Saltbush)
Dominant plant is Indian ricegrass.
R034BY115UT – Desert Sandy Loam (Indian Ricegrass)
R034BY115UT – Desert Sandy Loam (Indian Ricegrass)
Site not as above. Unclassified.
Soil briny, water table can be within 6-20" of the soil surface January through September.
R034BY132UT – Desert Salty Silt
R034BY132UT – Desert Salty Silt
Soil not as above, but has salt influence.
Soil has obvious gypsum component.
R034BY105UT – Desert Gypsum
R034BY105UT – Desert Gypsum
Soil not as above.
Soil is strongly saline.
R034BY101UT – Desert Alkali Bench (Castlevalley saltbush)
R034BY101UT – Desert Alkali Bench (Castlevalley saltbush)
Site not as above. Unclassified.
Restrictive layer 5-20" below the soil surface.
Restrictive layer 20-60" below the soil surface, soil moderately deep.
Soil has an obvious gypsum component.
R034BY116UT – Desert Shallow Gypsum
R034BY116UT – Desert Shallow Gypsum
Soil does not have an obvious gypsum component.
Surface soil texture is loamy clay or clay.
Surface texture is loamy.
Soil is non saline to slightly saline (surface soil 0-8 mmhos/cm EC).
R034BY109UT – Desert Loamy Clay (Shadscale)
R034BY109UT – Desert Loamy Clay (Shadscale)
Soil is moderately saline (surface soil 8-16 mmhos/cm EC).
Soil is generally moderately deep, but can be shallow, dominant shrub is Castlevalley saltbrush.
R034BY103UT – Desert Clay (Castlevalley saltbush)
R034BY103UT – Desert Clay (Castlevalley saltbush)
Soil generally shallow, restrictive layer less than 20" from the soil surface, dominant plant is mat saltbrush.
R034BY117UT – Desert Shallow Clay (Mat Saltbush)
R034BY117UT – Desert Shallow Clay (Mat Saltbush)
Site not as above. Unclassified.
Soil has an obvious shale influence, rocks on the soil surface are generally flags (flat rocks 6-15" in diameter).
R034BY131UT – Desert Shaley Shallow Loam (Spiny greasebush)
R034BY131UT – Desert Shaley Shallow Loam (Spiny greasebush)
Soil not as above.
Rocks larger than 3" in diameter are generally greater than 50% by volume on the soil surface.
R034BY118UT – Desert Shallow Loam (Black Sagebrush)
R034BY118UT – Desert Shallow Loam (Black Sagebrush)
Rocks larger than 3" in diameter are generally less than 50% by volume on the soil surface.
Surface soil texture is loam.
Surface soil texture is sandy loam.
R034BY130UT – Desert Shallow Sandy Loam (Shadscale)
R034BY130UT – Desert Shallow Sandy Loam (Shadscale)
Site not as above. Unclassified.
Surface soil texture sandy, site alkaline.
R034BY102UT – Desert Alkali Sand (Fourwing saltbush)
R034BY102UT – Desert Alkali Sand (Fourwing saltbush)
Surface soil texture is loam to clay, site may or may not be influenced by salts.
Surface soil texture is clay.
Surface soil texture is loamy.
Soil is generally non saline to slightly saline (0-8 mmhos/cm EC).
R034BY104UT – Desert Clay (Shadscale)
R034BY104UT – Desert Clay (Shadscale)
Soil is generally moderately saline (surface soil 8-16 mmhos/cm EC).
Slope is greater than 50%.
R034BY133UT – Desert Very Steep Shallow Loam (Shadscale)
R034BY133UT – Desert Very Steep Shallow Loam (Shadscale)
Slope is less than 50%.
R034BY121UT – Desert Shallow Loam (Shadscale)
R034BY121UT – Desert Shallow Loam (Shadscale)
Run-in or Additional Moisture Zone.
Site occurs in a meadow, fan or flat.
Site occurs adjacent to a stream (streambank, floodplain or terrace).
Site is influenced by salt (alkali).
Site not influenced by salt.
Water table is deeper than 40" below the soil surface year round.
Water table is less than 40" from the soil surface for part of the year.
Site occurs on a fan.
R034BY003UT – Alkali Fan (Castlevalley Saltbush)
R034BY003UT – Alkali Fan (Castlevalley Saltbush)
Site occurs on a flat.
R034BY006UT – Alkali Flat (Greasewood)
R034BY006UT – Alkali Flat (Greasewood)
Site not as above. Unclassified.
Water table is between 20 and 40" from the soil surface.
R034BY002UT – Alkali Bottom (Alkali sacaton)
R034BY002UT – Alkali Bottom (Alkali sacaton)
Water table is between 0 and 20" from the soil surface year round.
R034BY024UT – Wet Saline Meadow (Inland saltgrass)
R034BY024UT – Wet Saline Meadow (Inland saltgrass)
Site not as above. Unclassified.
Water table is less than 30" from the soil surface April-July.
R034BY016UT – Semiwet Fresh Meadow
R034BY016UT – Semiwet Fresh Meadow
Water table is greater than 30" from the soil surface year around.
Surface soil texture is loamy.
R034BY009UT – Loamy Bottom (Basin Big Sagebrush)
R034BY009UT – Loamy Bottom (Basin Big Sagebrush)
Surface soil texture is sandy.
R034BY012UT – Sandy Bottom (Fourwing salbush)
R034BY012UT – Sandy Bottom (Fourwing salbush)
Site not as above. Unclassified.
Water table is less than 20" from the soil surface year round.
Water table is greater than 20" from the soil surface year round or March through July.
Water not saline.
R034BY021UT – Wet Fresh Streambank (Willow)
R034BY021UT – Wet Fresh Streambank (Willow)
Water saline.
R034BY026UT – Wet Saline Streambank (Coyote willow)
R034BY026UT – Wet Saline Streambank (Coyote willow)
Site not as above. Unclassified.
Water table is greater than 40" from the soil surface year round.
R034BY014UT – Semidry Stream Terrace (Basin Big Sagebrush-Skunkbush Sumac)
R034BY014UT – Semidry Stream Terrace (Basin Big Sagebrush-Skunkbush Sumac)
Water table is less than 40" from the soil surface year round.
Narrowleaf cottonwood is the dominant tree.
R034BY019UT – Semiwet Streambank (Narrowleaf cottonwood)
R034BY019UT – Semiwet Streambank (Narrowleaf cottonwood)
Fremont cottonwood is the dominant tree.
Site occurs on floodplains in wider valleys.
R034BY011UT – River Flood Plain (Fremont Cottonwood)
R034BY011UT – River Flood Plain (Fremont Cottonwood)
Site occurs on streambanks in narrower valleys.
R034BY018UT – Semiwet Fresh Streambank (Fremont Cottonwood)
R034BY018UT – Semiwet Fresh Streambank (Fremont Cottonwood)
Site not as above. Unclassified.
Long term average mean annual precipitation
- No filter
- 15 – 20cm (6 – 8in)
- 20 – 25cm (8 – 10in)
- 25 – 30cm (10 – 12in)
- 30 – 35cm (12 – 14in)
- 35 – 40cm (14 – 16in)
—
cm
Long term average frost free days
- No filter
- 0 – 30days
- 30 – 50days
- 50 – 70days
- 70 – 90days
- 90 – 110days
- 110 – 130days
- 130 – 150days
—
days
- No filter
- 1000 – 1200m (3900 – 4600ft)
- 1200 – 1400m (4600 – 5200ft)
- 1400 – 1600m (5200 – 5900ft)
- 1600 – 1800m (5900 – 6600ft)
- 1800 – 2000m (6600 – 7200ft)
- 2000 – 2200m (7200 – 7900ft)
- 2200 – 2400m (7900 – 8500ft)
- 2400 – 2600m (8500 – 9800ft)
- 2600 – 2800m
—
m
- No filter
- 0 – 3%
- 3 – 5%
- 5 – 10%
- 10 – 15%
- 15 – 20%
- 20 – 25%
- 25 – 30%
- 30 – 35%
- 35 – 40%
- 40 – 45%
- 45 – 50%
- 50 – 60%
- 60 – 70%
- 70 – 80%
- 80 – 90%
—
%
- No filter
- Alluvial fan
- Alluvial flat
- Bench
- Canyon
- Cuesta
- Drainageway
- Dune
- Erosion remnant
- Escarpment
- Fan
- Fan remnant
- Flood plain
- Flood-plain step
- Hill
- Hillslope
- Inset fan
- Mesa
- Mountain slope
- Mountainside
- Outwash fan
- Outwash plain
- Outwash terrace
- Pediment
- Plain
- Plateau
- Ridge
- Strath terrace
- Stream terrace
- Structural bench
- Terrace
- Valley floor
- Valley side
- No filter
- Basalt
- Gypsum, rock
- Limestone and sandstone
- Limestone, unspecified
- Metamorphic and sedimentary
- Metamorphic, unspecified
- Quartzite
- Sandstone and shale
- Sandstone and siltstone
- Sandstone, calcareous
- Sandstone, unspecified
- Sedimentary, unspecified
- Shale and siltstone
- Shale, calcareous
- Shale, clayey
- Shale, unspecified
- No filter
- Alluvium
- Colluvium
- Eolian deposits
- Eolian sands
- Outwash
- Residuum
- Slope alluvium
Soil surface texture
- No filter
- Clay
- Clay loam
- Fine sand
- Fine sandy loam
- Loam
- Loamy fine sand
- Loamy sand
- Loamy very fine sand
- Sand
- Sandy clay loam
- Silty clay
- Silty clay loam
- Silt loam
- Sandy loam
- Very fine sandy loam
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Ecological site keys
MLRA 34B Ecological Site Key
I.
Site receives no extra water beyond normal precipitation.
A.
Greater than 12" annual precipitation.
1
Site receives 12-16" annual precipitation.
i.
Upland Ecological Zone.
a.
Site does not have a restrictive layer within 60" of soil surface.
2)
Slope less than 50%.
b)
Surface soil texture is loamy.
(2)
Surface soil texture silt loam.
... R034BY329UT – Upland Silt Loam (Fourwing saltbush/Winterfat)
(3)
Site not as above. Unclassified.
b.
Site has a restrictive layer within 60" of the soil surface; soil may be shallow to moderately deep.
1)
Soil is moderately deep (restrictive layer between 20-60").
a)
Slope is greater than 50%.
(1)
Rock fragment in the top 24" is less than 50% by volume.
... R034BY338UT – Upland Very Steep Loam (Pinyon-Utah Juniper)
b)
Slope is less than 50%.
(1)
Dominant plant is Wyoming big sagebrush, but if pinyon or Utah juniper is present, trees are generally less than 200 years old.
... R034BY334UT – Upland Stony Loam (Wyoming big sagebrush)
(2)
Dominant plants are pinyon and Utah juniper. Trees are predominantly old (greater than 200 years old).
... R034BY330UT – Upland Stony Loam (Pinyon-Utah Juniper)
(3)
Soil surface texture is clay loam or silty clay loam with western wheatgrass being the dominant aspect on the site.
... R034BY302UT – Upland Clay (Western Wheatgrass)
(4)
Site not as above. Unclassified.
2)
Soil is shallow (restrictive layer above 20").
a)
Slope is generally greater than 50%.
(1)
Surface soil texture is clay loam.
... R034BY340UT – Upland Very Steep Shallow Clay Loam (Utah Juniper-Pinyon)
(3)
Site not as above. Unclassified.
b)
Slope is generally less than 50%.
(1)
Surface soil texture is clay loam.
... R034BY315UT – Upland Shallow Clay Loam (Utah Juniper-Pinyon)
(2)
Surface texture is loam.
(a)
Dominant plant is black sagebrush, but if pinyon or Utah juniper is present, trees are generally less than 200 years old.
... R034BY320UT – Upland Shallow Loam (Black Sagebrush)
(b)
Dominant plants are pinyon and Utah juniper. Trees are predominantly old (greater than 200 years old).
... R034BY322UT – Upland Shallow Loam (Two-Needle Pinyon / Utah Juniper)
(c)
Site not as above. Unclassified.
2
Site receives more than 18" annual precipitation. Wrong MLRA.
B.
Less than 12" annual precipitation.
1
Site receives 8-12" annual precipitation.
i.
Semidesert Ecological Zone.
a.
Restrictive layer not present within 60" of the soil surface.
1)
Rock fragments over 3" on the soil surface are less than 15% by volume.
a)
Surface soil texture is fine, either loam, silt loam, or clay loam.
(1)
Rock fragments are greater than 35% by volume in the top 24".
... R034BY205UT – Semidesert Gravelly Loam (Wyoming Big Sagebrush)
(2)
Rock fragments are less than 35% by volume in the top 24".
(d)
Site not as above. Unclassified.
b)
Surface soil texture coarse, sand or sandy loam.
(1)
Rock fragments are greater than 35% by volume in the top 24".
... R034BY206UT – Semidesert Gravelly Sandy Loam (Wyoming Big Sagebrush)
(2)
Rock fragments are less than 35% by volume in the top 24".
... R034BY216UT – Semidesert Sandy Loam (Fourwing Saltbush)
2)
Rock fragments over 3" on the soil surface are greater than 15% by volume.
a)
Coarse fragments over 65% by volume in the top 24", coarse fragments also over 24" in diameter.
... R034BY202UT – Semidesert Bouldery Loam (Shadscale)
b)
Coarse fragments less than 65% by volume in the top 24".
(1)
Soil surface textures are very stony loam, very cobbly loam or very stony fine sandy loam.
... R034BY247UT – Semidesert Stony Loam (Utah Juniper-Pinyon)
(2)
Soil surface textures are stony loam, cobbly sandy clay loam or very cobbly sandy loam. Coarse fragments on this site are basalt.
... R034BY404CO – Semidesert Stony Loam (Shadscale)
c)
Site not as above. Unclassified.
b.
Restrictive layer present within 60" of soil surface, soil is shallow to moderately deep.
1)
Soil moderately deep, restrictive layer greater than 20" from soil surface.
a)
Soil contains obvious gypsum.
(3)
Site not as above. Unclassified.
b)
Soil doesn't contain an obvious gypsum component.
(1)
Slopes at the site are steep, greater than 50%.
(a)
Rocks are generally flat and less than 6" in diameter.
... R034BY253UT – Semidesert Very Steep Loam (Utah Juniper - Pinyon)
(b)
Rocks are generally 10-24" in diameter.
(1)
Rocks on soil surface smaller than 3" are less than 15% by volume.
... R034BY250UT – Semidesert Very Steep Loam (Salina Wildrye)
(2)
Rocks on the soil surface smaller than 3" are greater than 15% by volume.
... R034BY251UT – Semidesert Very Steep Loam (Wyoming big sagebrush)
(3)
Site not as above. Unclassified.
(2)
Slopes at the site are less than 50%.
(a)
Surface soil texture clay or clay loam.
(b)
Surface soil texture is other than clay or clay loam.
(2)
Surface soil texture is loamy or sandy loam.
(a)
Soil profile contains less than 35% by volume rock fragments in the top 24".
(2)
Site not as above. Unclassified.
(b)
Soil profile contains greater than 35% by volume rock fragments in the top 24". Unclassified.
2)
Soil shallow, restrictive layer less than 20" from the soil surface.
a)
Slope is less than 50%.
(1)
Surface soil texture is clay loam.
(a)
Soil surface has greater than 10% cover of rock fragments.
... R034BY221UT – Semidesert Shallow Clay (Utah Juniper)
(2)
Surface soil texture is coarser, loam or sandy loam.
(a)
Surface soil texture is sandy loam.
... R034BY239UT – Semidesert Shallow Sandy Loam (Utah Juniper/Two-Needle Pinyon)
(b)
Surface soil texture is loam.
(1)
Utah juniper present and trees are old (most are more than 200 years old).
... R034BY233UT – Semidesert Shallow Loam (Utah Juniper-Pinyon)
(2)
Utah juniper trees may be present but most trees are young (less than 200 years old).
(a)
Dominant plant is grass (salina wildrye).
... R034BY230UT – Semidesert Shallow Loam (Salina Wildrye)
(b)
Dominant plant is a shrub.
(1)
Dominant plant is Wyoming big sagebrush.
... R034BY225UT – Semidesert Shallow Loam (Wyoming big sagebrush)
(3)
Site not as above. Unclassified.
b)
Slope is greater than 50%.
(1)
Surface soil texture is clay.
... R034BY255UT – Semidesert Very Steep Shallow Clay (Utah Juniper)
(2)
Surface soil texture is loam.
(a)
Utah juniper present and trees old (most are more than 200 years old).
... R034BY259UT – Semidesert Very Steep Shallow Loam (Utah Juniper-Pinyon)
(b)
Utah juniper trees may be present but most trees are young (less than 200 years old).
2
Site receives 4-8" annual precipitation, generally dominated by salt desert shrub communities.
i.
Desert Ecological Zone.
a.
Restrictive layer not present within 60" of the soil surface.
1)
Surface soil non-saline (0-2 mmhos/cm EC).
b)
Surface soil is sandy.
(3)
Site not as above. Unclassified.
2)
Surface soil very slightly saline to strongly saline (2-16 mmhos/cm EC).
a)
Soil briny, water table can be within 6-20" of the soil surface January through September.
... R034BY132UT – Desert Salty Silt
b)
Soil not as above, but has salt influence.
(2)
Soil not as above.
(b)
Site not as above. Unclassified.
b.
Restrictive layer present within 60" of the soil surface, soil is shallow to moderately deep.
1)
Restrictive layer 5-20" below the soil surface.
b)
Soil does not have an obvious gypsum component.
(1)
Surface soil texture is loamy clay or clay.
(a)
Soil is non saline to slightly saline (surface soil 0-8 mmhos/cm EC).
... R034BY109UT – Desert Loamy Clay (Shadscale)
(b)
Soil is moderately saline (surface soil 8-16 mmhos/cm EC).
(1)
Soil is generally moderately deep, but can be shallow, dominant shrub is Castlevalley saltbrush.
... R034BY103UT – Desert Clay (Castlevalley saltbush)
(2)
Soil generally shallow, restrictive layer less than 20" from the soil surface, dominant plant is mat saltbrush.
... R034BY117UT – Desert Shallow Clay (Mat Saltbush)
(3)
Site not as above. Unclassified.
(2)
Surface texture is loamy.
(a)
Soil has an obvious shale influence, rocks on the soil surface are generally flags (flat rocks 6-15" in diameter).
... R034BY131UT – Desert Shaley Shallow Loam (Spiny greasebush)
(b)
Soil not as above.
(1)
Rocks larger than 3" in diameter are generally greater than 50% by volume on the soil surface.
... R034BY118UT – Desert Shallow Loam (Black Sagebrush)
(2)
Rocks larger than 3" in diameter are generally less than 50% by volume on the soil surface.
(a)
Surface soil texture is loam.
(c)
Site not as above. Unclassified.
2)
Restrictive layer 20-60" below the soil surface, soil moderately deep.
a)
Surface soil texture sandy, site alkaline.
... R034BY102UT – Desert Alkali Sand (Fourwing saltbush)
b)
Surface soil texture is loam to clay, site may or may not be influenced by salts.
(1)
Surface soil texture is clay.
(a)
Soil is generally non saline to slightly saline (0-8 mmhos/cm EC).
... R034BY104UT – Desert Clay (Shadscale)
(b)
Soil is generally moderately saline (surface soil 8-16 mmhos/cm EC).
(2)
Surface soil texture is loamy.
II.
Site receives extra water beyond normal precipitation through high water table, riparian area, or run-in water.
A.
Run-in or Additional Moisture Zone.
1
Site occurs in a meadow, fan or flat.
i.
Site is influenced by salt (alkali).
a.
Water table is deeper than 40" below the soil surface year round.
3)
Site not as above. Unclassified.
b.
Water table is less than 40" from the soil surface for part of the year.
1)
Water table is between 20 and 40" from the soil surface.
... R034BY002UT – Alkali Bottom (Alkali sacaton)
2)
Water table is between 0 and 20" from the soil surface year round.
... R034BY024UT – Wet Saline Meadow (Inland saltgrass)
3)
Site not as above. Unclassified.
ii.
Site not influenced by salt.
a.
Water table is less than 30" from the soil surface April-July.
... R034BY016UT – Semiwet Fresh Meadow
b.
Water table is greater than 30" from the soil surface year around.
3)
Site not as above. Unclassified.
2
Site occurs adjacent to a stream (streambank, floodplain or terrace).
i.
Water table is less than 20" from the soil surface year round.
c.
Site not as above. Unclassified.
ii.
Water table is greater than 20" from the soil surface year round or March through July.
a.
Water table is greater than 40" from the soil surface year round.
... R034BY014UT – Semidry Stream Terrace (Basin Big Sagebrush-Skunkbush Sumac)
b.
Water table is less than 40" from the soil surface year round.
1)
Narrowleaf cottonwood is the dominant tree.
... R034BY019UT – Semiwet Streambank (Narrowleaf cottonwood)
2)
Fremont cottonwood is the dominant tree.
a)
Site occurs on floodplains in wider valleys.
... R034BY011UT – River Flood Plain (Fremont Cottonwood)
b)
Site occurs on streambanks in narrower valleys.
... R034BY018UT – Semiwet Fresh Streambank (Fremont Cottonwood)
c)
Site not as above. Unclassified.
The Ecosystem Dynamics Interpretive Tool is an information system framework developed by the USDA-ARS Jornada Experimental Range, USDA Natural Resources Conservation Service, and New Mexico State University.
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