This dataset is derived from the latest edition of the 'Field Indicators of Hydric Soils in the United States' (Version 8.2, 2018)
Usage
data(fihs)
References
United States Department of Agriculture, Natural Resources Conservation Service. 2018. Field Indicators of Hydric Soils in the United States, Version 8.2. L.M. Vasilas, G.W. Hurt, and J.F. Berkowitz (eds.). USDA, NRCS, in cooperation with the National Technical Committee for Hydric Soils. Available online: https://www.nrcs.usda.gov/resources/guides-and-instructions/field-indicators-of-hydric-soils