Soil Quality · California
Soil Quality
Soil composition, pH, drainage, and organic matter content
Top 10 — Soil Quality in California
Score reflects soil quality only — not overall county quality.
All California Counties — Soil Quality Rankings
16 counties ranked by soil quality score. Overall Score shown for context.
| # | County | Soil Quality Score | Overall Score |
|---|---|---|---|
| 1 | Contra Costa County, CA | 65.1 | 39.8 |
| 2 | Santa Cruz County, CA | 65 | 41 |
| 3 | San Joaquin County, CA | 62.6 | 32.9 |
| 4 | Napa County, CA | 56.9 | 43.3 |
| 5 | San Benito County, CA | 56.6 | 42.9 |
| 6 | Lake County, CA | 52.9 | 31.1 |
| 7 | Monterey County, CA | 52.5 | 39.1 |
| 8 | Sonoma County, CA | 52.4 | 44.7 |
| 9 | Solano County, CA | 51.3 | 35.9 |
| 10 | Yolo County, CA | 49.3 | 37.6 |
| 11 | Marin County, CA | 46.1 | 47.9 |
| 12 | Colusa County, CA | 45.2 | 41.9 |
| 13 | Glenn County, CA | 39.7 | 41.7 |
| 14 | Sutter County, CA | 37.4 | 35.6 |
| 15 | Sacramento County, CA | 26.6 | 38.2 |
| 16 | Kings County, CA | 17.7 | 37.7 |