Stanislaus National Forest, California, Parts
The dominant drainage class is Well drained and the dominant hydrologic group is D (very slow infiltration, high runoff). This report summarizes the major soil map units across the survey area to help you understand what to expect when buying, building, or gardening in Stanislaus National Forest, California, Parts.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Rock outcrop | 132K | Excessively drained | D | Very limited | Very limited |
| Gerle family, bouldery-Rock outcrop complex, 5 to 35 pe rcent slopes | 34K | Well drained | A | Very limited | Very limited |
| Lithic Xerumbrepts-Fiddletown family, moderately deep-Rock outcrop complex, 35 to 70 percent slopes | 31K | Excessively drained | D | Very limited | Very limited |
| Dystric Lithic Xerochrepts-Rock outcrop-Josephine famil y moderately deep complex, 35 to 110 percent slopes | 30K | Excessively drained | D | Very limited | Very limited |
| Gerle family, deep, 5 to 35 percent slopes | 30K | Well drained | A | Very limited | Very limited |
| Holland family, deep-Moderately deep complex, 5 to 35 p ercent slopes | 27K | Well drained | B | Very limited | Very limited |
| Josephine family, moderately deep-Deep complex, 5 to 35 slopes | 25K | Well drained | C | Very limited | Very limited |
| Windy family, deep-Moderately deep complex, 5 to 35 per cent slopes | 23K | Well drained | A | Very limited | Very limited |
| Gerle family, moderately deep-Deep-Rock outcrop complex , 5 to 35 percent slopes | 22K | Well drained | B | Very limited | Very limited |
| Josephine family, moderately deep-Dystric lithic xeroch repts association, 5 to 35 percent slopes | 22K | Well drained | C | Very limited | Very limited |
| Josephine family, deep-Moderately deep complex, 5 to 35 slopes | 21K | Well drained | B | Very limited | Very limited |
| Lithic Cryumbrepts-Rock outcrop complex, 10 to 100 perc ent slopes | 21K | Excessively drained | D | Very limited | Very limited |
| Lithic Xerumbrepts-Rock outcrop-McCarthy family, modera tely deep complex, 5 to 60 percent slopes | 20K | Excessively drained | D | Very limited | Very limited |
| Wintoner-Tallac families complex, 15 to 40 percent slop es | 20K | Well drained | C | Very limited | Very limited |
| Josephine family, moderately deep-Dystric lithic xeroch repts association, 35 to 70 percent slopes | 20K | Well drained | C | Very limited | Very limited |
| Lithic Cryumbrepts-Inville family, moderately deep-Rock complex, 10 to 50 percent slopes | 19K | Excessively drained | D | Very limited | Very limited |
| Gerle family moderately deep-Rock outcrop complex, 10 t o 35 percent slopes | 18K | Well drained | B | Very limited | Very limited |
| Andic Cryumbrepts-Lithic Cryumbrepts-Rock outcrop compl ex, 20 to 70 percent slopes | 16K | Excessively drained | D | Very limited | Very limited |
| Holland family, deep, 5 to 35 percent slopes | 15K | Well drained | B | Very limited | Very limited |
| McCarthy family, deep-Moderately deep complex, 5 to 35 percent slopes | 15K | Well drained | A | Very limited | Very limited |
What This Means
Building & Foundations
About 100% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes. A geotechnical assessment is recommended before building.
Septic Systems
About 100% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Well-drained soils on sloped terrain — good for most plants but watch for erosion. Terracing, contour planting, and mulching help retain moisture and topsoil. Drip irrigation is more effective than sprinklers on slopes.