Natural Resources
Conservation Service
Major Land Resource Area 110X
Major Land Resource Area
Accessed: 04/22/2026
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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
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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
Tools
Filter by
interactive key
precipitation
frost free days
more..
clear all
Type
Image size
Done
Filters
Interactive key
Precipitation
Frost free days
Elevation
Slope
Landform
Parent material kind
Uplands and high stream terraces (non-flooded)
River Valleys
Summits, shoulders, and backslopes
Depressions
Bedrock <1.5m (60")
Bedrock >1.5m (60")
Sands or coarse-textured outwash
Gravelly glaciofluvial deposits
Bedrock is limestone
Bedrock is sandstone
Dark surface (mollic epipedon) >25cm (10")
Light surface (ochric epipedon) or dark surface <15cm (6")
F110XY003IL – Limestone Woodland
F110XY003IL – Limestone Woodland
Depth to seasonal high-water table >30cm (12")
R110XY001IL – Dry Limestone Prairie
R110XY001IL – Dry Limestone Prairie
Depth to seasonal high-water table <30cm (12")
R110XY002IL – Wet Limestone Prairie
R110XY002IL – Wet Limestone Prairie
Dark surface (mollic epipedon) >25cm (10")
R110XY004IL – Sandstone Prairie
R110XY004IL – Sandstone Prairie
Light surface (ochric epipedon) or dark surface <25cm (10")
F110XY005IL – Sandstone Woodland
F110XY005IL – Sandstone Woodland
Loess (or other silty or loamy material), loamy glaciofluvial deposits, loamy outwsah, glacial till, lacustrine sediments
Dark surface (mollis epipedon) >25cm (10")
Dark surface (mollic intergrade) 15-25cm (6-10") or Inceptisols
Light surface (ochric epipedon) or dark surface <15cm (6")
Depth to seasonal high-water table >183cm (72")
R110XY006IL – Dry Glacial Drift Upland Prairie
R110XY006IL – Dry Glacial Drift Upland Prairie
Depth to seasonal high-water table 30-183cm (12-72")
R110XY007IL – Moist Glacial Drift Upland Prairie
R110XY007IL – Moist Glacial Drift Upland Prairie
Depth to seasonal high-water table <30cm (12")
R110XY008IL – Wet Glacial Drift Upland Prairie
R110XY008IL – Wet Glacial Drift Upland Prairie
Depth to seasonal high-water table >183cm (72")
R110XY009IL – Dry Glacial Drift Upland Savanna
R110XY009IL – Dry Glacial Drift Upland Savanna
Depth to seasonal high-water table 30-183cm (12-72")
R110XY010IL – Moist Glacial Drift Upland Savanna
R110XY010IL – Moist Glacial Drift Upland Savanna
Depth to seasonal high-water table >76cm (30")
F110XY011IL – Dry Glacial Drift Upland Forest
F110XY011IL – Dry Glacial Drift Upland Forest
Depth to seasonal high-water table 45-76cm (18-30")
F110XY012IL – Moist Glacial Drift Upland Forest
F110XY012IL – Moist Glacial Drift Upland Forest
Dark surface (mollic epipedon) >25cm (10")
Light surface (ochric epipedon) or dark surface <15cm (6")
F110XY016IL – Sand Woodland
F110XY016IL – Sand Woodland
Depth to seasonal high-water table >130cm (51")
R110XY013IL – Dry Sand Prairie
R110XY013IL – Dry Sand Prairie
Depth to seasonal high-water table 38-130cm (15-51")
R110XY014IL – Moist Sand Prairie
R110XY014IL – Moist Sand Prairie
Depth to seasonal high-water table <30cm (12")
R110XY015IL – Wet Sand Prairie
R110XY015IL – Wet Sand Prairie
Slopes <12 percent
R110XY017IL – Gravel Prairie
R110XY017IL – Gravel Prairie
Slopes 12-20 percent
R110XY018IL – Steep Gravel Prairie
R110XY018IL – Steep Gravel Prairie
Slopes >20 percent
R110XY019IL – Very Steep Gravel Prairie
R110XY019IL – Very Steep Gravel Prairie
Organic soils, pH <4.5, restricted to Cook and Lake counties (IL) and Wisconsin
R110XY020IL – Ponded Organic Acidic Peatland
R110XY020IL – Ponded Organic Acidic Peatland
Organic soils, pH 6.6+, restricted to Cook, DuPage, Kane, Lake, and McHenry counties (IL) and Wisconsin
R110XY021IL – Ponded Organic Alkaline Peatland
R110XY021IL – Ponded Organic Alkaline Peatland
Organic material over sandy outwash, restricted to Kankakee Sand area
R110XY022IL – Organic Sand Seep
R110XY022IL – Organic Sand Seep
Organic material over sandy outwash, restricted to Lake Michigan Dune area
R110XY023IL – Organic Interdunal Fen
R110XY023IL – Organic Interdunal Fen
Organic and mineral soils, circumneutral, recharge wetland
R110XY024IL – Ponded Depressional Sedge Meadow
R110XY024IL – Ponded Depressional Sedge Meadow
Mineral soils, calcareous surface, discharge wetland
R110XY025IL – Ponded Calcareous Sedge Meadow
R110XY025IL – Ponded Calcareous Sedge Meadow
Lacustrine deposits, P-drained, restricted to Wisconsin
F110XY026IL – Lacustrine Swamp Forest
F110XY026IL – Lacustrine Swamp Forest
Flooded and ponded
R110XY027IL – Ponded Floodplain Marsh
R110XY027IL – Ponded Floodplain Marsh
Flooded only
Alluvium, depth to seasonal high-water table >45cm (18")
F110XY028IL – Silty-Loamy Floodplain Forest
F110XY028IL – Silty-Loamy Floodplain Forest
Alluvium, depth to seasonal high-water table <15cm (6")
R110XY029IL – Wet Floodplain Sedge Meadow
R110XY029IL – Wet Floodplain Sedge Meadow
Long term average mean annual precipitation
- No filter
- 80 – 100cm (31 – 39in)
—
cm
Long term average frost free days
- No filter
- 110 – 130days
- 130 – 150days
—
days
- No filter
- 0 – 200m (0 – 700ft)
- 200 – 400m (700 – 1300ft)
- 400 – 600m (1300 – 2000ft)
- 600 – 800m (2000 – 2600ft)
- 800 – 1000m (2600 – 3300ft)
- 1000 – 1200m (3300 – 3900ft)
—
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%
—
%
- No filter
- Depression
- Flood plain
- No filter
- Alluvium
- Colluvium
- Drift
- Eolian deposits
- Glaciofluvial deposits
- Lacustrine deposits
- Loess
- Organic, unspecified
- Outwash
- Residuum
- Till, unspecified
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Ecological site keys
MLRA 110 Key to Ecological Sites
I.
Uplands and high stream terraces (non-flooded)
A.
Summits, shoulders, and backslopes
1
Bedrock <1.5m (60")
i.
Bedrock is limestone
a.
Dark surface (mollic epipedon) >25cm (10")
ii.
Bedrock is sandstone
2
Bedrock >1.5m (60")
i.
Loess (or other silty or loamy material), loamy glaciofluvial deposits, loamy outwsah, glacial till, lacustrine sediments
a.
Dark surface (mollis epipedon) >25cm (10")
1)
Depth to seasonal high-water table >183cm (72")
... R110XY006IL – Dry Glacial Drift Upland Prairie
2)
Depth to seasonal high-water table 30-183cm (12-72")
... R110XY007IL – Moist Glacial Drift Upland Prairie
3)
Depth to seasonal high-water table <30cm (12")
... R110XY008IL – Wet Glacial Drift Upland Prairie
b.
Dark surface (mollic intergrade) 15-25cm (6-10") or Inceptisols
1)
Depth to seasonal high-water table >183cm (72")
... R110XY009IL – Dry Glacial Drift Upland Savanna
2)
Depth to seasonal high-water table 30-183cm (12-72")
... R110XY010IL – Moist Glacial Drift Upland Savanna
c.
Light surface (ochric epipedon) or dark surface <15cm (6")
2)
Depth to seasonal high-water table 45-76cm (18-30")
... F110XY012IL – Moist Glacial Drift Upland Forest
3
Sands or coarse-textured outwash
i.
Dark surface (mollic epipedon) >25cm (10")
4
Gravelly glaciofluvial deposits
B.
Depressions
1
Organic soils, pH <4.5, restricted to Cook and Lake counties (IL) and Wisconsin
... R110XY020IL – Ponded Organic Acidic Peatland
2
Organic soils, pH 6.6+, restricted to Cook, DuPage, Kane, Lake, and McHenry counties (IL) and Wisconsin
... R110XY021IL – Ponded Organic Alkaline Peatland
3
Organic material over sandy outwash, restricted to Kankakee Sand area
... R110XY022IL – Organic Sand Seep
4
Organic material over sandy outwash, restricted to Lake Michigan Dune area
... R110XY023IL – Organic Interdunal Fen
5
Organic and mineral soils, circumneutral, recharge wetland
... R110XY024IL – Ponded Depressional Sedge Meadow
6
Mineral soils, calcareous surface, discharge wetland
... R110XY025IL – Ponded Calcareous Sedge Meadow
II.
River Valleys
B.
Flooded only
1
Alluvium, depth to seasonal high-water table >45cm (18")
... F110XY028IL – Silty-Loamy Floodplain Forest
2
Alluvium, depth to seasonal high-water table <15cm (6")
... R110XY029IL – Wet Floodplain Sedge Meadow
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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