Natural Resources
Conservation Service
Major Land Resource Area 135A
Major Land Resource Area
Accessed: 05/05/2026
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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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interactive key
precipitation
frost free days
more..
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id
name
stage
Viewing 20 of 21
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ProvisionalF135AY180MS/F135AY180MSDeep Somewhat Poorly Drained To Moderately Well Drained Fine Silty Acid Broad Flats -
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ProvisionalF135AY230MS/F135AY230MSDeep Somewhat Poorly Drained To Moderately Well Drained Clay Alkaline Floodplains
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ProvisionalF135AY240MS/F135AY240MSDeep Poorly Drained To Somewhat Poorly Drained Clay Acid Floodplains
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ProvisionalF135AY320MS/F135AY320MSDeep Poorly Drained To Somewhat Poorly Drained Fine Silty Acid Flatwoods Uplands
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ProvisionalF135AY340MS/F135AY340MSDeep Poorly Drained To Somewhat Poorly Drained Clay Acid Flatwoods Uplands
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ProvisionalF135AY370MS/F135AY370MSDeep Somewhat Poorly Drained Fine Loamy Acid Flatwoods Stream Terraces
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ProvisionalF135AY390MS/F135AY390MSDeep Somewhat Poorly Drained Fine Silty Acid Flatwood Floodplains
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ProvisionalR135AY110MS/R135AY110MSShallow to Moderately Deep Well Drained Silty Clay to Clay Alkaline Broad Flats -
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Ecological site map
Basemap
Topo
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Aerial
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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
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 origin
Parent material kind
Soil texture
Blackland Prairie Region
Flatwoods Region
Broad flats
Flood Plains
Alkaline
Acid
Shallow to moderately deep
R135AY110MS – Shallow to Moderately Deep Well Drained Silty Clay to Clay Alkaline Broad Flats
R135AY110MS – Shallow to Moderately Deep Well Drained Silty Clay to Clay Alkaline Broad Flats
Deep
Clay
Moderately well to Well Drained
R135AY130MS – Deep Moderately Well to Well Drained Clay Alkaline Broad Flats
R135AY130MS – Deep Moderately Well to Well Drained Clay Alkaline Broad Flats
Somewhat Poorly Drained
R135AY140MS – Deep Somewhat Poorly Drained Clay Alkaline Broad Flats
R135AY140MS – Deep Somewhat Poorly Drained Clay Alkaline Broad Flats
Deep
Clay
Fine Loamy
F135AY170AL – Deep Well Drained Fine Loamy Acid Broad Flats
F135AY170AL – Deep Well Drained Fine Loamy Acid Broad Flats
Fine Silty
F135AY180MS – Deep Somewhat Poorly Drained To Moderately Well Drained Fine Silty Acid Broad Flats
F135AY180MS – Deep Somewhat Poorly Drained To Moderately Well Drained Fine Silty Acid Broad Flats
Moderately Well Drained
F135AY150AL – Deep Well to Moderately Well Drained Clay Acid Broad Flats
F135AY150AL – Deep Well to Moderately Well Drained Clay Acid Broad Flats
Poorly to Somewhat Poorly Drained
F135AY160MS – Deep Somewhat Poorly Drained Clay Acid Broad Flats
F135AY160MS – Deep Somewhat Poorly Drained Clay Acid Broad Flats
Nonacid
Alkaline
Acid
Deep
Fine Silty
F135AY210MS – Deep Somewhat Poorly Drained Fine Silty Nonacid Floodplains
F135AY210MS – Deep Somewhat Poorly Drained Fine Silty Nonacid Floodplains
Clay
F135AY220MS – Deep Poorly Drained Clay Nonacid Floodplains
F135AY220MS – Deep Poorly Drained Clay Nonacid Floodplains
Deep
F135AY230MS – Deep Somewhat Poorly Drained To Moderately Well Drained Clay Alkaline Floodplains
F135AY230MS – Deep Somewhat Poorly Drained To Moderately Well Drained Clay Alkaline Floodplains
Deep
Clay
F135AY240MS – Deep Poorly Drained To Somewhat Poorly Drained Clay Acid Floodplains
F135AY240MS – Deep Poorly Drained To Somewhat Poorly Drained Clay Acid Floodplains
Fine Loamy
F135AY250MS – Deep Moderately Well Drained Fine Loamy Acid Floodplains
F135AY250MS – Deep Moderately Well Drained Fine Loamy Acid Floodplains
Upland
Slopes
Stream Terraces
F135AY370MS – Deep Somewhat Poorly Drained Fine Loamy Acid Flatwoods Stream Terraces
F135AY370MS – Deep Somewhat Poorly Drained Fine Loamy Acid Flatwoods Stream Terraces
Flood Plains
Acid
Acid over Chalk
F135AY340MS – Deep Poorly Drained To Somewhat Poorly Drained Clay Acid Flatwoods Uplands
F135AY340MS – Deep Poorly Drained To Somewhat Poorly Drained Clay Acid Flatwoods Uplands
Deep
Clay
F135AY310AL – Deep Moderately Well Drained Clay Acid Flatwoods Uplands
F135AY310AL – Deep Moderately Well Drained Clay Acid Flatwoods Uplands
Fine Silty
F135AY320MS – Deep Poorly Drained To Somewhat Poorly Drained Fine Silty Acid Flatwoods Uplands
F135AY320MS – Deep Poorly Drained To Somewhat Poorly Drained Fine Silty Acid Flatwoods Uplands
Fine Loamy
F135AY330MS – Deep Moderately Well Drained Fine Loamy Acid Flatwoods Uplands
F135AY330MS – Deep Moderately Well Drained Fine Loamy Acid Flatwoods Uplands
Acid
F135AY350AL – Deep Moderately Well Drained Clay Acid Flatwoods Slopes
F135AY350AL – Deep Moderately Well Drained Clay Acid Flatwoods Slopes
Acid over Chalk
F135AY360AL – Deep Poorly Drained Clay Acid Flatwoods Slopes
F135AY360AL – Deep Poorly Drained Clay Acid Flatwoods Slopes
Acid
Deep
Clay
F135AY380MS – Deep Somewhat Poorly Drained Clay Acid Flatwoods Floodplains
F135AY380MS – Deep Somewhat Poorly Drained Clay Acid Flatwoods Floodplains
Fine Silty
F135AY390MS – Deep Somewhat Poorly Drained Fine Silty Acid Flatwood Floodplains
F135AY390MS – Deep Somewhat Poorly Drained Fine Silty Acid Flatwood Floodplains
Long term average mean annual precipitation
- No filter
- 140 – 500cm (55 – 197in)
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cm
Long term average frost free days
- No filter
- 190 – 210days
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days
- No filter
- 0 – 200m (0 – 700ft)
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m
- No filter
- 0 – 3%
- 3 – 5%
- 5 – 10%
- 10 – 15%
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%
- No filter
- Depression
- Drainageway
- Flat
- Flood plain
- Flood-plain step
- Hill
- Hillslope
- Knoll
- Ridge
- Stream terrace
- Swamp
- Terrace
- Toe
- No filter
- Chalk
- Limestone and dolomite
- Sedimentary, unspecified
- Shale, clayey
- No filter
- Alluvium
- Fluviomarine deposits
- Loess
- Marine deposits
- Marl
- Residuum
Soil surface texture
- No filter
- Clay
- Clay loam
- Fine sandy loam
- Loam
- Sandy clay loam
- Silty clay
- Silty clay loam
- Silt loam
- Sandy loam
Print Options
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Ecological site keys
MLRA 135A
BP
Blackland Prairie Region
BF
Broad flats
ALK
Alkaline
S-M
Shallow to moderately deep
... R135AY110MS – Shallow to Moderately Deep Well Drained Silty Clay to Clay Alkaline Broad Flats
D
Deep
C
Clay
MW-W
Moderately well to Well Drained
... R135AY130MS – Deep Moderately Well to Well Drained Clay Alkaline Broad Flats
SWP
Somewhat Poorly Drained
... R135AY140MS – Deep Somewhat Poorly Drained Clay Alkaline Broad Flats
ACD
Acid
D
Deep
C
Clay
MWD
Moderately Well Drained
... F135AY150AL – Deep Well to Moderately Well Drained Clay Acid Broad Flats
P-SW
Poorly to Somewhat Poorly Drained
... F135AY160MS – Deep Somewhat Poorly Drained Clay Acid Broad Flats
FS
Fine Silty
... F135AY180MS – Deep Somewhat Poorly Drained To Moderately Well Drained Fine Silty Acid Broad Flats
FP
Flood Plains
NACD
Nonacid
D
Deep
ALK
Alkaline
D
Deep
... F135AY230MS – Deep Somewhat Poorly Drained To Moderately Well Drained Clay Alkaline Floodplains
ACD
Acid
D
Deep
F
Flatwoods Region
U
Upland
ACD
Acid
D
Deep
FS
Fine Silty
... F135AY320MS – Deep Poorly Drained To Somewhat Poorly Drained Fine Silty Acid Flatwoods Uplands
A/C
Acid over Chalk
... F135AY340MS – Deep Poorly Drained To Somewhat Poorly Drained Clay Acid Flatwoods Uplands
S
Slopes
ST
Stream Terraces
... F135AY370MS – Deep Somewhat Poorly Drained Fine Loamy Acid Flatwoods Stream Terraces
FP
Flood Plains
ACD
Acid
D
Deep
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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