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Soil Survey Technical References

These references are maintained on other NRCS Web sites.

The National Soils Technical References contains links for the following:

  • Field Book for Describing and Sampling Soils
  • Field Indicators of Hydric Soils
  • Lab Methods Manual
  • Land Resource Regions and Major Land Resource Areas of the United States, the Caribbean, and the Pacific Basin
  • National Forestry Handbook
  • National Forestry Manual
  • National Instructions
  • National Range and Pasture Handbook
  • National Soil Survey Handbook
  • Soil Classification
  • Soil Survey Manual
  • Technical Notes
  • Testing Methods for Phosphorus and Organic Matter

Last Modified: 01/24/2012