Natural Resources
Conservation Service
ecological site group 018XESG13
Very Shallow
Accessed: 08/30/2026
Ecological site group description
Key Characteristics
- Uplands
- <75% bedrock outcrop
- Surface SAR <8 and subsurface EC <8 and surface EC <4
- Slope <35% or <40% surface rock
- Depth <30 cm
Provisional. A provisional ecological site description has undergone quality control and quality assurance review. It contains a working state and transition model and enough information to identify the ecological site.
Physiography
This ESG is located on hills and ridges.
Vegetation dynamics
The modal ecological site for this ESG is R018XI163CA Thermic Low Rolling Hills.
Major Land Resource Area
MLRA 018X
Sierra Nevada Foothills
Subclasses
- F018XA202CA–Deep Mesic Mountain Slopes & Summits
- F018XC201CA–Thermic Granitic Foothills
- F018XI200CA–Low Elevation Foothills
- F018XI201CA–Moderately Deep Thermic Foothills
- R018XA101CA–Basalt Flow Plateaus
- R018XA103CA–Shallow Thermic Volcanic Ridges
- R018XA104CA–Shallow Mesic Volcanic Ridges
- R018XC101CA–Thermic Clayey Terraces and Hills (2:1 Clays)
- R018XE103CA–Loamy Low Hills
- R018XI102CA–Thermic Ultramafic Foothills Extremely High Magnesium Content (Ca:Mg Ratio Less Than 0.5)
- R018XI103CA–Thermic Ultramafic Foothills Moderately High Magnesium Content (Ca:Mg Ratio 0.5 To 2)
- R018XI107CA–Shallow, Undulating Volcanic Hills
- R018XI163CA–Thermic Low Rolling Hills
- R018XI164CA–Clayey Dissected Swales
Correlated Map Unit Components
22733288, 22732602, 22732519, 23459005, 23459011, 23459023, 22820985, 22821498, 22936921, 22936931, 22937104, 22936900, 22938196, 22937964, 22936750, 22937957, 22938013, 22938009, 22937998, 22937997, 22938226, 22938277, 22484981, 22484985, 22484865, 22485045, 22485563, 22521663, 22521451, 22521453, 22521459, 22521461, 22521840, 22521585, 22521744, 22521887, 22523153, 22523341, 22523423, 22523395, 22523536, 22523222, 22523329, 22523146, 22523463, 22523466, 22523244, 23467451, 23471899, 23472002, 23471922, 23471928, 23471411, 23471500, 23471503, 23471507, 23471512, 23471585, 23471589, 23471592, 23471596, 23471600, 23471606, 23471608, 23471615, 23471652, 23471656, 23471821, 23471827, 23471829, 23012152, 23010981, 23010963, 23011807, 23010968, 23011587, 23011594, 23011603, 23011888, 22557582, 22557799, 22558252, 22557804, 22558254, 22557831, 22558282, 22558300, 22558510, 22558515, 22558520, 22558555, 22530172, 22530266, 22529953, 23030403, 23029693, 23029652, 23030713, 23029886, 23030327, 23029821, 23029816
Stage
Provisional
Contributors
Curtis Talbot
Travis Nauman
) 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.
