Trinity County, California, Weaverville Area
The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). 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 Trinity County, California, Weaverville Area.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| BROWNSCREEK-DOUGCITY COMPLEX, 50 TO 75 PERCENT SLOPES | 15K | Well drained | C | Very limited | Very limited |
| MARPA-HOOSIMBIM-BAMTUSH COMPLEX, 50 TO 75 PERCENT SLOPES | 13K | Well drained | B | Very limited | Very limited |
| TALLOWBOX-MINERSVILLE COMPLEX, 50 TO 75 PERCENT SLOPES | 9K | Somewhat excessively drained | B | Very limited | Very limited |
| BROCKGULCH-DEDRICK-BROWNBEAR COMPLEX, 50 TO 75 PERCENT SLOPES | 9K | Well drained | C | Very limited | Very limited |
| SHEETIRON-BARPEAK COMPLEX, 50 TO 90 PERCENT SLOPES | 8K | Well drained | C | Very limited | Very limited |
| VALCREEK-MINERSVILLE-CHOOP COMPLEX, 30 TO 75 PERCENT SLOPES | 8K | Excessively drained | A | Very limited | Very limited |
| INDLETON-CARIS-HOOSIMBIM COMPLEX, 50 TO 75 PERCENT SLOPES | 7K | Well drained | B | Very limited | Very limited |
| BARPEAK-SHEETIRON COMPLEX, 50 TO 90 PERCENT SLOPES | 7K | Well drained | B | Very limited | Very limited |
| GOULDING-VITZTHUM-VANVOR COMPLEX, 50 TO 75 PERCENT SLOPES | 6K | Somewhat excessively drained | D | Very limited | Very limited |
| PARDALOE-GOULDING COMPLEX, 50 TO 75 PERCENT SLOPES | 4K | Well drained | B | Very limited | Very limited |
| BAMTUSH-BROWNBEAR COMPLEX, 50 TO 75 PERCENT SLOPES | 4K | Well drained | B | Very limited | Very limited |
| HOOSIMBIM-BAMTUSH-MARPA COMPLEX, 30 TO 50 PERCENT SLOPES | 4K | Well drained | B | Very limited | Very limited |
| BROWNSCREEK-DOUGCITY COMPLEX, 30 TO 50 PERCENT SLOPES | 4K | Well drained | C | Very limited | Very limited |
| BEARGULCH-SKYROCK COMPLEX, 50 TO 75 PERCENT SLOPES | 4K | Well drained | B | Very limited | Very limited |
| CREFORK CLAY LOAM, 15 TO 30 PERCENT SLOPES | 3K | Well drained | D | Very limited | Very limited |
| HOLKAT-HOOSIMBIM COMPLEX, 50 TO 75 PERCENT SLOPES | 3K | Well drained | C | Very limited | Very limited |
| MUSSERHILL-WEAVERVILLE COMPLEX, 30 TO 50 PERCENT SLOPES | 3K | Well drained | C | Very limited | Very limited |
| BROWNBEAR-BAMTUSH COMPLEX, 30 TO 50 PERCENT SLOPES | 3K | Well drained | C | Very limited | Very limited |
| BAMTUSH-BROWNBEAR-WEAVERVILLE COMPLEX, 30 TO 75 PERCENT SLOPES | 3K | Well drained | C | Very limited | Very limited |
| CARIS EXTREMELY GRAVELLY SANDY LOAM, 50 TO 75 PERCENT SLOPES | 3K | Well drained | C | 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.