Description: The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution. It defines the areal extent of surface water drainage to a point except in coastal or lake front areas where there could be multiple outlets as stated by the "Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)" "Standard" (http://pubs.usgs.gov/tm/11/a3/). Watershed boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. This dataset represents the hydrologic unit boundaries to the 12-digit (6th level) for the entire United States. Some areas may also include additional subdivisions representing the 14- and 16-digit hydrologic unit (HU). At a minimum, the HUs are delineated at 1:24,000-scale in the conterminous United States, 1:25,000-scale in Hawaii, Pacific basin and the Caribbean, and 1:63,360-scale in Alaska, meeting the National Map Accuracy Standards (NMAS). Higher resolution boundaries are being developed where partners and data exist and will be incorporated back into the WBD. WBD data are delivered as a dataset of polygons and corresponding lines that define the boundary of the polygon. WBD polygon attributes include hydrologic unit codes (HUC), size (in the form of acres and square kilometers), name, downstream hydrologic unit code, type of watershed, non-contributing areas, and flow modifications. The HUC describes where the unit is in the country and the level of the unit. WBD line attributes contain the highest level of hydrologic unit for each boundary, line source information and flow modifications.Editing History:3/28/2018 - This feature class (FC) was created from EDW SDE "Instance default version", FC "S_USA.WBD_HU10". A Spatial Selection was made of all watersheds that intersected the Tahoe N.F. Selected feature data was then Reprojected and saved to a FC. Metadata was updated using a combination of existing FC metadata and NHD metadata. All feature class operations and metadata updates done by TNF GIS staff, R. Miller.4/03/2013 - This feature class (FC) was created from EDW SDE "Instance default version", FC "S_USA.WBD_HU10". A Spatial Selection was made of all watersheds that intersected the Tahoe N.F. Selected feature data was then Reprojected and saved to a FC. Metadata was updated using a combination of existing FC metadata as well as metadata from Eldorado N.F. and LTBMU respective FC's. All feature class operations and metadata updates done by TNF GIS staff, C.Brickey.
Copyright Text: Funding for the Watershed Boundary Dataset (WBD) was provided by the USDA-NRCS, USGS and EPA along with other federal, state and local agenciesies. Representatives from many agencies contributed a substantial amount of time and salary towards quality review and updating of the dataset in order to meet the WBD Standards. Acknowledgment of the originating agencies would be appreciated in products derived from these data. See dataset specific metadata for further information
Description: *This is the "CPAD_2018a" release downloaded January 4, 2019*The California Protected Areas Database (CPAD) contains data on lands owned in fee by governments, non-profits and some private entities that are protected for open space purposes. Data includes all such areas in California, from small urban parks to large national parks and forests, mostly aligned to assessor parcel boundaries. Data is collected by Holdings (parcels) which are aggregated to Units (commonly named areas within counties) and Super Units (commonly named areas generally).
Copyright Text: California Protected Areas Database (CPAD - www.calands.org). December 2018.