Natural Resources
Conservation Service
Major Land Resource Area 109X
Major Land Resource Area
Accessed: 05/01/2026
Next steps
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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
R109XY023MO – Shallow Limestone Backslope Glade/Woodland
F109XY003MO – Loess Upland Woodland
R109XY001MO – Claypan Summit Prairie
R109XY002MO – Loess Upland Prairie
R109XY006MO – Till Upland Prairie
R109XY046MO – Till Upland Savanna
F109XY007MO – Till Upland Woodland
R109XY010MO – Interbedded Sedimentary Upland Savanna
F109XY011MO – Interbedded Sedimentary Upland Woodland
F109XY015MO – Loamy Backslope Woodland
R109XY008MO – Till Backslope Savanna
F109XY009MO – Till Protected Backslope Forest
F109XY022MO – Till Exposed Backslope Woodland
R109XY012MO – Interbedded Sedimentary Backslope Savanna
F109XY013MO – Interbedded Sedimentary Protected Backslope Forest
F109XY025MO – Interbedded Sedimentary Exposed Backslope Woodland
R109XY018MO – Loamy Footslope Savanna
R109XY036MO – Wet Loess High Terrace Savanna
F109XY019MO – Loess High Terrace Woodland
R109XY029MO – Wet Upland Drainageway Prairie
R109XY028MO – Loamy Upland Drainageway Savanna
F109XY004MO – Loamy Upland Drainageway Woodland
R109XY034MO – Loamy Terrace Savanna
R109XY038MO – Wet Terrace Prairie
R109XY032MO – Ponded Floodplain Prairie
F109XY037MO – Wet Floodplain Woodland
F109XY030MO – Loamy Floodplain Forest
R109XY005MO – Loamy Floodplain Prairie
R109XY031MO – Wet Floodplain Prairie
Long term average mean annual precipitation
- No filter
- 80 – 100cm (31 – 39in)
- 100 – 120cm (39 – 47in)
Long term average frost free days
- No filter
- 130 – 150days
- 150 – 170days
- No filter
- 0 – 200m (0 – 700ft)
- 200 – 400m (700 – 1300ft)
- 400 – 600m (1300 – 2000ft)
- No filter
- 0 – 3%
- 3 – 5%
- 5 – 10%
- 10 – 15%
- 15 – 20%
- 20 – 25%
- 25 – 30%
- 30 – 35%
- 35 – 40%
- 40 – 45%
- 45 – 50%
- No filter
- Divide
- Drainageway
- Flood plain
- Flood-plain step
- Hill
- Hillslope
- Interfluve
- Outwash terrace
- Ridge
- Stream terrace
- No filter
- Dolomite (dolostone)
- Limestone, sandstone and shale
- Limestone, unspecified
- No filter
- Alluvium
- Colluvium
- Loess
- Residuum
- Slope alluvium
- Till, unspecified
Soil surface texture
- No filter
- Clay loam
- Fine sandy loam
- 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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