This EnviroAtlas dataset contains data on Agricultural Land Coverage on Hydric Soils for each Watershed Boundary Dataset (WBD) 12-Digit Hydrologic Unit Code (HUC-12) of the conterminous United States. This is based on the October 2023 Natural Resources Conservation Service gridded Service Soil Survey Geographic Database and gridded National Soil Survey Geographic Databased (NRCS gSSURGO and gNATSGO), the 2021 National Land Cover Database (NLCD) and the 2020 Cropland Data Layer (CDL). The hydric soils are determined based on whether hydric soils make up 80% or more of a mapunit's components. The raster was made binary, where the mapunit's with at least 80% hydric soil coverage were assigned a value of 1. This was then intersected with a 30-m raster that combines the NLCD and CDL resources, where the CDL provides more exact and detailed agricultural land coverage. This layer does not include the NLCD class Pasture/Hay as agricultural lands.

This dataset was produced by the US EPA to support research and online mapping activities related to EnviroAtlas. EnviroAtlas (https://www.epa.gov/enviroatlas) allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the contiguous United States. The dataset is available as downloadable data (https://edg.epa.gov/data/Public/ORD/EnviroAtlas) or as an EnviroAtlas map service. Additional descriptive information about each attribute in this dataset can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).