Western Riverside Area, California
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 Western Riverside Area, California.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Cieneba rocky sandy loam, 15 to 50 percent slopes, eroded | 115K | Somewhat excessively drained | D | Very limited | Very limited |
| Tollhouse rocky coarse sandy loam, 8 to 50 percent slopes, eroded | 59K | Excessively drained | D | Very limited | Very limited |
| Rockland | 49K | Not rated | Not rated | ||
| Hanford coarse sandy loam, 2 to 8 percent slopes | 39K | Well drained | A | Not limited | Very limited |
| Badland | 31K | Very limited | Very limited | ||
| Friant rocky fine sandy loam, 25 to 50 percent slopes, eroded | 31K | Well drained | D | Very limited | Very limited |
| Lodo rocky loam, 25 to 50 percent slopes, eroded | 29K | Somewhat excessively drained | D | Very limited | Very limited |
| Terrace escarpments | 27K | Not rated | Not rated | ||
| Greenfield sandy loam, 2 to 8 percent slopes, eroded | 23K | Well drained | A | Not limited | Very limited |
| Cajalco rocky fine sandy loam, 15 to 50 percent slopes, eroded | 23K | Well drained | D | Very limited | Very limited |
| Sheephead sandy loam, 30 to 65 percent slopes, eroded, stony | 21K | Well drained | D | Very limited | Very limited |
| Crafton rocky sandy loam, 25 to 50 percent slopes, eroded | 19K | Well drained | B | Very limited | Very limited |
| Temescal rocky loam, 15 to 50 percent slopes, eroded | 16K | Well drained | D | Very limited | Very limited |
| Rough broken land | 15K | Very limited | Very limited | ||
| Gullied land | 15K | Very limited | Very limited | ||
| Ramona sandy loam, 2 to 5 percent slopes, eroded | 14K | Well drained | C | Not limited | Very limited |
| Water | 14K | D | Not rated | Not rated | |
| Fallbrook rocky sandy loam, shallow, 15 to 50 percent slopes, eroded | 13K | Well drained | D | Very limited | Very limited |
| Monserate sandy loam, 0 to 5 percent slopes | 11K | Well drained | C | Somewhat limited | Very limited |
| Hanford coarse sandy loam, 8 to 15 percent slopes, eroded | 10K | Well drained | A | Somewhat limited | Very limited |
What This Means
Building & Foundations
About 67% 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 84% 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.