Natural Resources
Conservation Service
ecological site group ESG048A39
Aridic Clay Uplands
Accessed: 04/19/2026
Ecological site group description
Key Characteristics
- Uplands
- <75% bedrock outcrop
- Gypsum <5% surface, gypsum <10% subsurface, surface SAR <8, subsurface EC <8, and surface EC <4.
- EC<1.5 surface or <2 subsurface
- Soil not steep, rocky, or shallow
- Clay >30% surface or >35% subsurface AND Aridic soil moisture regime - 69 soil components
Provisional. An approved ecological site description has undergone quality control and quality assurance review. It contains a working state and transition model, enough information to identify the ecological site, and full documentation for all ecosystem states contained in the state and transition model.
Physiography
This ESG is located on mountain slopes and hills.
Climate
This ESG is characterized by the aridic soil moisture regime.
Soil features
This ESG is characterized by clay >30% surface or >35% subsurface.
Vegetation dynamics
The modal ecological site for the ESG is F048AY908CO - Mixed Conifer.
Major Land Resource Area
MLRA 048A
Southern Rocky Mountains
Subclasses
Correlated Map Unit Components
20987271, 20993627, 21345301, 21285394, 21284313, 21284314, 21663985, 21131187, 21131190, 21251018, 21251562, 21251568, 21245378, 21245471, 21245504, 21265207, 21265241, 21244935, 21244939, 21243277, 21243028, 21241368, 21835885, 21835404, 21835251, 21978529, 21978699, 21978793, 21979332, 21979371, 21979396, 21979505, 21979403, 21979438, 21979440, 21979053, 21979056, 21979068, 21979154, 21979536, 21979655, 21979100, 21979139, 21980488, 21980081, 21980622, 21979967, 21980820, 21980827, 21980796, 21980801, 21980808, 21980826, 21981853, 21981852, 21980968, 21981079, 21981086, 21981110, 21981247, 21981243, 21981912, 21981476, 21981486, 21982019, 21981605, 21981649, 21981772, 21407188
Stage
Approved
Contributors
Travis Nauman
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