Wetland Soils
This data set contains soil types indicating probable and possible wetland areas based on county soil surveys in the Hudson River estuary watershed, including the soil surveys from Albany, Columbia, Dutchess, Greene, Ulster, Orange, Putnam, Rensselaer, Rockland, and Westchester counties. “Probable wetland areas” are those soil units classified in USDA-NRCS soil surveys as very poorly drained or poorly drained, and “possible wetland areas” are those classified as somewhat poorly drained, following the methodology of Kiviat and Stevens’ (2001) Biodiversity Assessment Manual for the Hudson River Estuary Corridor. Probable and possible wetland areas derived from the soil survey data cover a greater area than New York State or federal wetland maps, which are known to be inaccurate. Existing wetland maps generally underestimate wetland area and omit smaller and drier wetlands. The probable and possible wetland areas can be used to help identify additional areas where wetlands may be present. Nothing can replace the on-the-ground delineation for verifying and understanding wetlands.Through a partnership with Cornell University Department of Natural Resources, the NYSDEC Hudson River Estuary Program generated this data set for the 10 counties bordering the Hudson River Estuary. Original digital county soil survey data sets were obtained by email request from the NRCS in 2017 and soil units indicating probable and possible wetlands were extracted based on dominant soil drainage class. The digital soil survey is the most detailed level of soil geographic data developed by the National Cooperative Soil Survey. The information was prepared by digitizing maps, by compiling information onto a planimetric correct base and digitizing, or by revising digitized maps using remotely sensed and other information. This data set consists of georeferenced digital map data and computerized attribute data. The map data are in a soil survey area extent format and include a detailed, field verified inventory of soils and miscellaneous areas that normally occur in a repeatable pattern on the landscape and that can be cartographically shown at the scale mapped. The soil map units are linked to attributes in the National Soil Information System relational database, which gives the proportionate extent of the component soils and their properties.
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