Los Padres National Forest 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 Los Padres National Forest Area, California.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Millsholm-Exchequer-Stonyford families complex, 30 to 75 percent slopes | 154K | Well drained | D | Very limited | Very limited |
| Yorba-Millsholm-Stonyford families association, 30 to 60 percent slopes | 116K | Well drained | D | Very limited | Very limited |
| Millerton-Millsholm-Agua Dulce families association, 30 to 60 percent slopes | 112K | Well drained | D | Very limited | Very limited |
| Inks-Lodo-Agua Dulce families complex, 30 to 80 percent slopes | 67K | Somewhat excessively drained | D | Very limited | Very limited |
| Kilburn-Wrentham-Supan families association, 30 to 60 percent slopes | 57K | Well drained | B | Very limited | Very limited |
| Los Osos-Modesto-Chualar families association, 20 to 70 percent slopes | 56K | Well drained | C | Very limited | Very limited |
| Livermore-Agua Dulce-Hambright families association, 30 to 80 percent slopes | 48K | Well drained | C | Very limited | Very limited |
| Los Robles-Trigo families-Orthents association, 30 to 60 percent slopes | 48K | Well drained | D | Very limited | Very limited |
| Yorba-Modjeska-Morical families association, 30 to 60 percent slopes | 46K | Well drained | C | Very limited | Very limited |
| Agua Dulce-Los Robles-Modjeska families association, 10 to 60 percent slopes | 43K | Well drained | C | Very limited | Very limited |
| Modesto-Rincon-Millsholm families association, 20 to 50 percent slopes | 42K | Well drained | C | Very limited | Very limited |
| Los Gatos-Kilburn-Panamint families association, 30 to 60 percent slopes | 42K | Well drained | B | Very limited | Very limited |
| Rincon-Livermore-Modesto families association, 30 to 60 percent slopes | 40K | Well drained | C | Very limited | Very limited |
| Lodo-Botella families-Rock outcrop association, 30 to 60 percent slopes | 40K | Somewhat excessively drained | D | Very limited | Very limited |
| Skalan-Huntmount families association, 30 to 70 percent slopes | 39K | Well drained | C | Very limited | Very limited |
| Millerton-Reliz-Modjeska families association, 40 to 70 percent slopes | 36K | Well drained | D | Very limited | Very limited |
| Lodo-Hambright-Millsholm families association, 30 to 60 percent slopes | 35K | Somewhat excessively drained | D | Very limited | Very limited |
| Kilburn-Wrentham-Supan families association, 10 to 30 percent slopes | 34K | Well drained | B | Very limited | Very limited |
| Millerton-Millsholm families-Rock outcrop complex, 30 to 80 percent slopes | 32K | Well drained | D | Very limited | Very limited |
| Modesto-Yorba-Agua Dulce families association, 30 to 60 percent slopes | 32K | Well drained | B | 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.