Natural Resources
Conservation Service
Major Land Resource Area 078C
Major Land Resource Area
Accessed: 04/19/2026
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1
Select an ecological site group
Select an ecological site group using the list, keys, photos, briefcase, or quick search option located on this page. -
2
Explore the ecological site group description
Next, learn more about the selected ecological site group and its characteristic dynamics by browsing the ecological site group description and exploring alternative state and transition model formats.
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i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying ash flows or alluvial fans
- Slopes flat to gentle, occupying low landscape positions in basins and drainages
- Soils somewhat excessively drained
Briefcase
Add ecological site groups 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 site groups
Major Land Resource Areas
Ecological site group photos
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Additional water
Uplands
Perennial water
[Criteria]
078CESG08 – Riparian
078CESG08 – Riparian
Ephemeral water
Subsurface EC >4
078CESG09 – Saline Bottoms
078CESG09 – Saline Bottoms
Subsurface EC <4
Sand >50% & clay <25% for surface and subsurface
078CESG12 – Sandy Bottoms
078CESG12 – Sandy Bottoms
Sand <50% or clay >25% for surface and subsurface
078CESG01 – Bottoms
078CESG01 – Bottoms
>75% bedrock outcrop
078CESG07 – Outcrops
078CESG07 – Outcrops
<75% bedrock outcrop
Surface SAR >8
078CESG10 – Saline Hills
078CESG10 – Saline Hills
Surface SAR <8
Gypsum >5% surface or >10% subsurface
078CESG05 – Gypsum
078CESG05 – Gypsum
Gypsum <5% surface 0r <10% subsurface
Subsurface EC >8 or surface EC >4
078CESG10 – Saline Hills
078CESG10 – Saline Hills
Subsurface EC <8 or surface EC <4
EC >1.5 surface or >2 subsurface
078CESG11 – Saline Uplands
078CESG11 – Saline Uplands
EC <1.5 surface and <2 subsurface
Depth <30cm
078CESG15 – Very Shallow
078CESG15 – Very Shallow
Depth: 30-55cm
078CESG14 – Shallow
078CESG14 – Shallow
Depth >55cm
Rock >30% surface or >30% subsurface
078CESG03 – Deep Rocky
078CESG03 – Deep Rocky
Rock <30% surface and <30% subsurface
Clay >30% surface or >35% subsurface
078CESG02 – Clay Uplands
078CESG02 – Clay Uplands
Clay <30% and <35% subsurface
Sand >75% or texture is loamy sand or sandier in surface & subsurface
078CESG13 – Sandy Uplands
078CESG13 – Sandy Uplands
Sand <75% or texture is sandy loam or finer in surface & subsurface
Clay <20% or texture is sandy loam or sandier in surface
078CESG06 – Loamy Uplands
078CESG06 – Loamy Uplands
Clay >20% or texture is finer than sandy loam in surface
078CESG04 – Finer Uplands
078CESG04 – Finer Uplands
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Ecological site group keys
MLRA 78C
I.
Additional water
A.
Perennial water
2
Ephemeral water
ii.
Subsurface EC <4
II.
Uplands
B.
<75% bedrock outcrop
2
Surface SAR <8
ii.
Gypsum <5% surface 0r <10% subsurface
b.
Subsurface EC <8 or surface EC <4
2)
EC <1.5 surface and <2 subsurface
c)
Depth >55cm
(2)
Rock <30% surface and <30% subsurface
(b)
Clay <30% and <35% subsurface
(1)
Sand >75% or texture is loamy sand or sandier in surface & subsurface
... 078CESG13 – Sandy Uplands
(2)
Sand <75% or texture is sandy loam or finer in surface & subsurface
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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