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Major Land Resource Areas (MLRA) are a portion of the spatial framework utilized by the Natural Resources Conservation Service in the planning, design, implementation, and evaluation of natural resource management activities. MLRA boundaries reflect nearly homogenous areas of landuse, elevation, topography, climate, water resources, potential vegetation, and soils.
More information on NRCS MLRAs is available from
https://www.nrcs.usda.gov/sites/default/files/2022-10/AgHandbook296_text_low-res.pdf
| MLRA | Description |
| 14 | Central California Coastal Valleys |
| 15 | Central California Coastal Range |
| 16 | California Delta |
| 17 | Sacramento and San Joaquin Valleys |
| 18 | Sierra Nevada Foothills |
| 19 | Southern California Coastal Plain |
| 21 | Klamath and Shasta Valleys and Buttes |
| 22A | Sierra Nevada Mountains |
| 22B | Southern Cascade Mountains |
| 23 | Malheur High Plateau |
| 26 | Carson Basin and Mountains |
| 29 | Southern Nevada Basin and Range |
| 30 | Mojave Desert Basin and Range |
| 4B | California Coastal Redwood Belt |
| 5 | Siskiyou - Trinity Area |
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