Natural Resources
Conservation Service
Major Land Resource Area 103X
Major Land Resource Area
Accessed: 04/29/2026
Next steps
-
1
Select an ecological site
Select an ecological site using the list, keys, photos, briefcase, or quick search option located on this page. -
2
Explore the ecological site description
Next, learn more about the selected ecological site and its characteristic dynamics by browsing the ecological site description and exploring alternative state and transition model formats.
Ecological site list
Ecological site map
Basemap
Find me
Find point
Full screen
Zoom in to display soil survey map units for an area of interest, and zoom out to display MLRAs. Select a map unit polygon to view ecological sites correlated to that map unit. View a brief description of an ecological site by clicking on its name in the map popup. Soil survey correlations may not be accurate, and ecological site classification of a location should always be verified in the field. Each selection may require the transfer of several hundred KB of data.
Briefcase
Add ecological sites and Major Land Resource Areas to your briefcase by clicking on the briefcase (
) icon wherever it occurs. Drag and drop items to reorder. Cookies are used to store briefcase items between browsing sessions. Because of this, the number of items that can be added to your briefcase is limited, and briefcase items added on one device and browser cannot be accessed from another device or browser. Users who do not wish to place cookies on their devices should not use the briefcase tool. Briefcase cookies serve no other purpose than described here and are deleted whenever browsing history is cleared.
Ecological sites
Major Land Resource Areas
Ecological site photos
Filters
R103XY003MN – Sandy Upland Prairies
R103XY019MN – Sandy Upland Savannas
F103XY024MN – Sandy Upland Forests
R103XY002MN – Calcareous Upland Prairies
R103XY004MN – Loamy Upland Prairies
R103XY020MN – Loamy Upland Savannas
F103XY025MN – Loamy Upland Forests
R103XY005MN – Clayey Upland Prairies
F103XY026MN – Clayey Upland Forests
R103XY021MN – Clayey Upland Savannas
R103XY009MN – Calcareous Rim Prairies
R103XY012MN – Wet Footslope/Drainageway Prairies
R103XY011MN – Footslope/Drainageway Prairies
F103XY030MN – Wet Footslope/Drainageway Forests
F103XY029MN – Footslope/Drainageway Forests
R103XY016MN – Organic Marsh
R103XY018MN – Shallow Lakes
R103XY017MN – Organic Wet Meadow/Carr
R103XY014MN – Recharge Depressions
R103XY015MN – Depressional Marsh
F103XY036MN – Depressional Wet Forests
R103XY007MN – Sandy Wet Prairies
R103XY001MN – Loamy Wet Prairies
R103XY022MN – Loamy Wet Savannas
F103XY027MN – Loamy Wet Forests
F103XY028MN – Clayey Wet Forests
R103XY023MN – Clayey Wet Savannas
R103XY008MN – Clayey Wet Prairies
R103XY010MN – Bedrock Controlled Wet Prairies
R103XY006MN – Bedrock Controlled Upland Prairies
R103XY013MN – Calcareous Fens
R103XY035MN – Organic Floodplain Marsh
R103XY034MN – Floodplain Marsh
F103XY033MN – Wet Floodplains
F103XY032MN – Loamy Floodplains
F103XY031MN – Sandy Floodplains
Long term average mean annual precipitation
- No filter
- 60 – 80cm (24 – 31in)
- 80 – 100cm (31 – 39in)
Long term average frost free days
- No filter
- 110 – 130days
- 130 – 150days
- No filter
- 0 – 200m (0 – 700ft)
- 200 – 400m (700 – 1300ft)
- 400 – 600m (1300 – 2000ft)
- 600 – 800m
- 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%
- No filter
- Depression
- Drainageway
- End moraine
- Flat
- Flood plain
- Glacial lake
- Ground moraine
- Kame
- Lake plain
- Lateral moraine
- Lava plain
- Moraine
- Outwash plain
- River valley
- Strath terrace
- Stream terrace
- Till plain
- Valley
- Valley train
- No filter
- Granite
- Limestone, unspecified
- Shale, calcareous
- Shale, unspecified
- Slate
- No filter
- Alluvium
- Colluvium
- Drift
- Glaciofluvial deposits
- Lacustrine deposits
- Organic, unspecified
- Outwash
- Slope alluvium
- Till, unspecified
Soil surface texture
- No filter
- Clay
- Clay loam
- Fine sandy loam
- Loam
- Loamy fine sand
- Loamy sand
- Sandy clay loam
- Silty clay
- Silty clay loam
- Silt loam
- Sandy loam
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Ecological site keys
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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