Natural Resources
Conservation Service
Major Land Resource Area 141X
Major Land Resource Area
Accessed: 04/24/2026
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Ecological sites
Major Land Resource Areas
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Soil texture
Site occurs along major rivers and streams and experiences regular flooding, or would in the absence of dams and other water control structures ES 110 Floodplain Riparian Complex (ESG 1—Floodplains)
RX141X110 – Floodplain Riparian Complex
RX141X110 – Floodplain Riparian Complex
Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
Soils poorly- and/or very poorly-drained throughout site
Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils with drier soils in a complex throughout site
Wetland area consisting of multiple associated plant communities, most of which are too wet to support greater than 20% tree cover --- (ESG 2—Open Wetlands)
Wetland area consisting of multiple associated plant communities, most of which support greater than 20% tree cover --- (ESG 3—Wooded Wetlands)
Soils mostly muck --- ES 210—Marsh Wetland Complex
RX141X210 – Marsh Wetland Complex
RX141X210 – Marsh Wetland Complex
Soils mostly peat or mucky peat
Soil pH mostly greater than 4.5 throughout site --- ES 220—Semi-acidic Peat Wetland Complex
RX141X220 – Semi-acidic Peat Wetland Complex
RX141X220 – Semi-acidic Peat Wetland Complex
Soil pH mostly less than 4.5 throughout site --- ES 230—Acidic Peat Wetland Complex
RX141X230 – Acidic Peat Wetland Complex
RX141X230 – Acidic Peat Wetland Complex
All soils are very poorly-drained with greater than 16 inches (40 cm) of organic mucky peat deposits on the surface --- ES 302—Mucky Peat Swamp
RX141X302 – Mucky Swamp
RX141X302 – Mucky Swamp
Most soils on the site have less than 16 inches (40 cm) organic deposits on surface
Soils are clay or silty clay in texture --- ES 304—Wet Clay Flat
RX141X304 – Wet Clay Flat
RX141X304 – Wet Clay Flat
Soil texture coarser than silty clay (silty to sandy)
Soils sandy in texture (often intermixed with organic soils) --- ES 303—Acidic Swamp
RX141X303 – Acidic Swamp
RX141X303 – Acidic Swamp
Soil textures coarse-silty to coarse-loamy often with a densely compacted horizon within 43 inches (108 cm) of the soil surface
All soils are poorly-drained and water table within 18 inches of soil surface. Red and/or black spruce dominate with low northern white cedar cover --- ES 305—Wet Loamy Flat
RX141X305 – Wet Loamy Flat
RX141X305 – Wet Loamy Flat
Soils are a complex of both poorly- and very poorly-drained, with water table less than 12 inches below soil surface. High northern white cedar cover --- ES 301—Loamy Till Swamp
RX141X301 – Semi-rich Loamy Swamp
RX141X301 – Semi-rich Loamy Swamp
Site occurs in exposed areas high in rock outcrop with little soil available for plants, too harsh to support greater than 20% tree cover --- ES 801—Rockland, (ESG 8—Rockland)
RX141X801 – Rockland
RX141X801 – Rockland
Site capable of producing greater than 20% persistent tree cover
Shallow soils less than 20 inches (50 cm) deep, or a combination of shallow and moderately deep soils 20-40 inches (100 cm) deep, over bedrock --- ES 701—Shallow Till, (ESG 7—Shallow Forests)
RX141X701 – Shallow Till
RX141X701 – Shallow Till
All soil components greater than 20 inches deep (50 cm)
Predominant soil texture is sandy or sandy-skeletal --- (ESG 6—Sandy Forests)
Predominant soil texture is finer than sandy
Soil well-drained or drier --- ES 601—Dry Sand
RX141X601 – Dry Sand
RX141X601 – Dry Sand
Soil moderately well-drained or somewhat poorly-drained --- ES 602—Sandy Toeslope
RX141X602 – Sandy Toeslope
RX141X602 – Sandy Toeslope
Predominant soil texture is clay (fine or fine-silty) --- ES 401—Clay, (ESG 4—Clay Forests)
RX141X401 – Clay
RX141X401 – Clay
Predominant soil texture is coarser than clay --- 15 (ESG 5—Loamy Forests)
Soil parent material includes some calcareous members, with predominant pH over 6.0
Soil parent material lacks calcareous members, with pH mostly below 6.0
Site occurs on poorly- to somewhat poorly-drained toeslope of a large watershed where nutrients and water accumulate --- ES 507—Calcareous Till Toeslope
RX141X507 – Calcareous Till Toeslope
RX141X507 – Calcareous Till Toeslope
Site occurs on moderately well- to well-drained backslopes --- ES 506—Loamy Calcareous Slope
RX141X506 – Calcareous Till Slope
RX141X506 – Calcareous Till Slope
Loamy surface soils underlain by sandy or sandy-skeletal strata --- ES 505—Loamy over Sandy
RX141X505 – Loamy over Sandy
RX141X505 – Loamy over Sandy
Loamy surface soils underlain by loamy subsoils
Soils somewhat-poorly drained, including poorly-drained soils that are mapped with somewhat poorly-drained components
Soils moderately well- to well-drained, including somewhat poorly-drained components mapped with drier components
Site occurs on poorly- to somewhat poorly-drained toeslope of a large watershed where nutrients and water accumulate --- ES 502—Loamy Till Toeslope
RX141X502 – Loamy Till Toeslope
RX141X502 – Loamy Till Toeslope
Site occurs on relatively flat expanses with less than 5% slope, rather than the toeslope of a large watershed --- ES 503—Loamy Flat
RX141X503 – Loamy Flat
RX141X503 – Loamy Flat
Site occurs in protected coves and drainageways with very thick, dark surface A horizon greater than 12 inches (30 cm), very high in organic matter --- ES 504—Enriched Loamy Cove
RX141X504 – Enriched Loamy Cove
RX141X504 – Enriched Loamy Cove
Site occurs on gentle to steep slopes (greater than 5%) lacking significant organic matter accumulation --- ES 501—Loamy Slope
RX141X501 – Loamy Slopes
RX141X501 – Loamy Slopes
Long term average mean annual precipitation
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- 120 – 140cm (47 – 55in)
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cm
Long term average frost free days
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- 90 – 110days
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days
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- 0 – 200m (0 – 700ft)
- 200 – 400m (700 – 1300ft)
- 400 – 600m (1300 – 2000ft)
- 600 – 800m (2000 – 2600ft)
- 800 – 1000m (2600 – 3300ft)
—
m
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- 0 – 3%
- 3 – 5%
- 5 – 10%
—
%
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- Alluvial fan
- Bench
- Bog
- Delta
- Depression
- Drumlin
- Drumlinoid ridge
- Flood plain
- Hill
- Kame terrace
- Lake plain
- Low hill
- Moraine
- Outwash delta
- Outwash plain
- Ridge
- Swamp or marsh
- Terrace
- Till plain
- Valley train
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- Gneiss
- Granite
- Limestone and sandstone
- Limestone, unspecified
- Marble
- Sandstone and shale
- Sandstone and siltstone
- Sandstone, unspecified
- Schist, unspecified
- Sedimentary, unspecified
- Shale and siltstone
- Shale, acid
- Shale, calcareous
- Shale, unspecified
- Slate
- No filter
- Alluvium
- Eolian deposits
- Glaciofluvial deposits
- Glaciolacustrine deposits
- Organic, unspecified
- Till, unspecified
Soil surface texture
- No filter
- Clay
- Loam
- Loamy sand
- Sand
- Silt
- Silty clay
- Very fine sand
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Ecological site keys
Dichotomous key to MLRA 141 Ecological Sites
1a.
Site occurs along major rivers and streams and experiences regular flooding, or would in the absence of dams and other water control structures ES 110 Floodplain Riparian Complex (ESG 1—Floodplains)
... RX141X110 – Floodplain Riparian Complex
1b.
Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
2a.
Soils poorly- and/or very poorly-drained throughout site
3a.
Wetland area consisting of multiple associated plant communities, most of which are too wet to support greater than 20% tree cover --- (ESG 2—Open Wetlands)
4b.
Soils mostly peat or mucky peat
5a.
Soil pH mostly greater than 4.5 throughout site --- ES 220—Semi-acidic Peat Wetland Complex
... RX141X220 – Semi-acidic Peat Wetland Complex
5b.
Soil pH mostly less than 4.5 throughout site --- ES 230—Acidic Peat Wetland Complex
... RX141X230 – Acidic Peat Wetland Complex
3b.
Wetland area consisting of multiple associated plant communities, most of which support greater than 20% tree cover --- (ESG 3—Wooded Wetlands)
6a.
All soils are very poorly-drained with greater than 16 inches (40 cm) of organic mucky peat deposits on the surface --- ES 302—Mucky Peat Swamp
... RX141X302 – Mucky Swamp
6b.
Most soils on the site have less than 16 inches (40 cm) organic deposits on surface
7b.
Soil texture coarser than silty clay (silty to sandy)
8a.
Soils sandy in texture (often intermixed with organic soils) --- ES 303—Acidic Swamp
... RX141X303 – Acidic Swamp
8b.
Soil textures coarse-silty to coarse-loamy often with a densely compacted horizon within 43 inches (108 cm) of the soil surface
9a.
All soils are poorly-drained and water table within 18 inches of soil surface. Red and/or black spruce dominate with low northern white cedar cover --- ES 305—Wet Loamy Flat
... RX141X305 – Wet Loamy Flat
9b.
Soils are a complex of both poorly- and very poorly-drained, with water table less than 12 inches below soil surface. High northern white cedar cover --- ES 301—Loamy Till Swamp
... RX141X301 – Semi-rich Loamy Swamp
2b.
Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils with drier soils in a complex throughout site
10a.
Site occurs in exposed areas high in rock outcrop with little soil available for plants, too harsh to support greater than 20% tree cover --- ES 801—Rockland, (ESG 8—Rockland)
... RX141X801 – Rockland
10b.
Site capable of producing greater than 20% persistent tree cover
11a.
Shallow soils less than 20 inches (50 cm) deep, or a combination of shallow and moderately deep soils 20-40 inches (100 cm) deep, over bedrock --- ES 701—Shallow Till, (ESG 7—Shallow Forests)
... RX141X701 – Shallow Till
11b.
All soil components greater than 20 inches deep (50 cm)
12a.
Predominant soil texture is sandy or sandy-skeletal --- (ESG 6—Sandy Forests)
13b.
Soil moderately well-drained or somewhat poorly-drained --- ES 602—Sandy Toeslope
... RX141X602 – Sandy Toeslope
12b.
Predominant soil texture is finer than sandy
14a.
Predominant soil texture is clay (fine or fine-silty) --- ES 401—Clay, (ESG 4—Clay Forests)
... RX141X401 – Clay
14b.
Predominant soil texture is coarser than clay --- 15 (ESG 5—Loamy Forests)
15a.
Soil parent material includes some calcareous members, with predominant pH over 6.0
16a.
Site occurs on poorly- to somewhat poorly-drained toeslope of a large watershed where nutrients and water accumulate --- ES 507—Calcareous Till Toeslope
... RX141X507 – Calcareous Till Toeslope
16b.
Site occurs on moderately well- to well-drained backslopes --- ES 506—Loamy Calcareous Slope
... RX141X506 – Calcareous Till Slope
15b.
Soil parent material lacks calcareous members, with pH mostly below 6.0
17a.
Loamy surface soils underlain by sandy or sandy-skeletal strata --- ES 505—Loamy over Sandy
... RX141X505 – Loamy over Sandy
17b.
Loamy surface soils underlain by loamy subsoils
18a.
Soils somewhat-poorly drained, including poorly-drained soils that are mapped with somewhat poorly-drained components
19a.
Site occurs on poorly- to somewhat poorly-drained toeslope of a large watershed where nutrients and water accumulate --- ES 502—Loamy Till Toeslope
... RX141X502 – Loamy Till Toeslope
19b.
Site occurs on relatively flat expanses with less than 5% slope, rather than the toeslope of a large watershed --- ES 503—Loamy Flat
... RX141X503 – Loamy Flat
18b.
Soils moderately well- to well-drained, including somewhat poorly-drained components mapped with drier components
20a.
Site occurs in protected coves and drainageways with very thick, dark surface A horizon greater than 12 inches (30 cm), very high in organic matter --- ES 504—Enriched Loamy Cove
... RX141X504 – Enriched Loamy Cove
20b.
Site occurs on gentle to steep slopes (greater than 5%) lacking significant organic matter accumulation --- ES 501—Loamy Slope
... RX141X501 – Loamy Slopes
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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