Hydric Soils of Idaho. SSURGO, NRCS. http://soildatamart.nrcs.usda.gov, April 14, 2011 This was downloaded by map survey area and then merged together into one statewide layer. Only HYDRIC soils were merged. Topology was created and fixed for 'areas must not overlap'. There were other mapped areas that 'didn't touch' when they appeared to be coincident arcs, these areas were not modified. This dataset was merged for a project within the Wildlife Bureau of IDFG, 2011. This data is for display purposes and the general location of soils that may contain wetlands. PLEASE note: Most, but not all the state has been mapped. Also, within a map survey area it is likely that only part of the area is mapped. Areas of private agricultural land are more likely to be mapped than public lands.Hydric soils are soils formed under conditions of saturation, flooding, and/or ponding for long enough during the growing season to develop anaerobic conditions in the upper layers. Hydric soils saturated due to human activity (e.g., irrigation) are included, as well as soils with hydric indicators where wetland hydrology is no longer present (e.g., drained wetlands). Specific observable field indicators (e.g., morphologic properties) must be present for a soil to be classified as hydric. These observable properties indicate that the processes associated with hydric soil formation processes are or were present. These indicators persist during both wet and dry periods. (for more information, see https://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/use/hydric/?cid=nrcs142p2_053957). This dataset represents existing hydric soil spatial and tabular data for the state of Idaho compiled from the USDA Natural Resources Conservation Service Soil Survey Geographic Database (SSURGO) (the layer does not represent any recent updates made to this database). The SSURGO database contains information about soil collected by the National Cooperative Soil Survey. It includes soil map units describing components including soil taxonomy, physical and chemical properties, ecology and hydrology, productivity, limitations to land use, and classifications such as hydric soil classification.This dataset includes the following attributes:• map unit• soil taxonomy component• percent of the map unit likely containing soils meeting hydric criteria (i.e., hydric soils may not form in portions of the map unit where flooding and ponding are lacking due to topography or where water table depths are too deep)• dominant landform in the map unit• hydric soil criteria met
