Description: The California Nonpoint Source (NPS) Program allocates about $4.5 million of CWA Section 319 funding from the U.S. Environmental Protection Agency annually to support implementation and planning projects addressing water quality problems in surface and ground water resulting from NPS pollution. These projects seek to restore impacted beneficial uses and aquatic ecosystems, and have been selected in a highly competitive process.
Description: The California Nonpoint Source (NPS) Program allocates about $4.5 million of CWA Section 319 funding from the U.S. Environmental Protection Agency annually to support implementation and planning projects addressing water quality problems in surface and ground water resulting from NPS pollution. These projects seek to restore impacted beneficial uses and aquatic ecosystems, and have been selected in a highly competitive process.
Description: The California Nonpoint Source (NPS) Program allocates about $4.5 million of CWA Section 319 funding from the U.S. Environmental Protection Agency annually to support implementation and planning projects addressing water quality problems in surface and ground water resulting from NPS pollution. These projects seek to restore impacted beneficial uses and aquatic ecosystems, and have been selected in a highly competitive process.
Description: The California Nonpoint Source (NPS) Program allocates about $4.5 million of CWA Section 319 funding from the U.S. Environmental Protection Agency annually to support implementation and planning projects addressing water quality problems in surface and ground water resulting from NPS pollution. These projects seek to restore impacted beneficial uses and aquatic ecosystems, and have been selected in a highly competitive process.
Description: The Watershed and Subwatershed hydrologic unit boundaries provide a uniquely identified and uniform method of subdividing large drainage areas. The smaller sized 6th level sub-watersheds (up to 250,000 acres) are useful for numerous application programs supported by a variety of local, State, and Federal Agencies. This data set is intended to be used as a tool for water-resource management and planning activities, particularly for site-specific and localized studies requiring a level of detail provided by large-scale map information. The dataset will be appended to a larger seamless nationally consistent geospatial database as other states complete their portion of the watershed boundary dataset.
Copyright Text: Natural Resources Conservation Service (NRCS)
Description: The California Interagency Watershed Map of 1999 (updated May 2004, "calw221") is the State of California's working definition of watershed boundaries. Previous Calwater versions (1.2 and 2.2) described California watersheds, beginning with the division of the State's 101 million acres into ten Hydrologic Regions (HR). Each HR is progressively subdivided into six smaller, nested levels: the Hydrologic Unit (HU, major rivers), Hydrologic Area (HA, major tributaries), Hydrologic Sub-Area (HSA), Super Planning Watershed (SPWS), and Planning Watershed (PWS). At the Planning Watershed (the most detailed level), where implemented, polygons range in size from approximately 3,000 to 10,000 acres. At all levels, a total of 7035 polygons represent the State's watersheds. The present version, Calwater 2.2.1, refines the watershed coding structure and documentation (database fields were added and some were renamed). There are significant watershed boundary, code, and name differences between Calwater versions 1.2 (1995), 2.0 (1998), and 2.2 (1999). The differences between versions 2.2 (1999) and 2.2.1 (2004) are attribute field names and some inserted lines that identify differences between State and federal watersheds.
Copyright Text: California Interagency Watershed Mapping Committee-2004