Soils

• UC Davis Soil Resource Laborary, UC Davis: Research in soil science includes soil genesis and morphology, water quality and constructed wetlands, and watershed-scale survey studies. Includes online soil survey.
• USDA Natural Resources Conservation Service (NRCS) Soils Website: National soil-based information service
  • USDA NRCS: Web Soil Survey: Provides soil data and information for nation's counties
    links to NRCS surveys in California:
    • Colusa
    • Intermountain Area (parts of Lassen, Modoc, Shasta and Siskiyou)
    • Mendicino (western part)
    • Napa
    • Santa Cruz
    • Stanislaus (western part)
    • Tulare (western part)
    • Yolo