Service Description: Polygon features identifying California metropolitan areas that are issued a Phase I Municipal Stormwater Permit, which are symbolized in the "Phase I MS4 Boundaries" map layer. This layer is informational only, and is intended to provide the user context in regards to Phase I Permits.
Service ItemId: 6c45bd00ad534839b262d2933babb61d
Has Versioned Data: false
Max Record Count: 2000
Supported query Formats: JSON
Supports applyEdits with GlobalIds: False
Supports Shared Templates: True
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Description: The Municipal Storm Water Permitting Program regulates storm water discharges from municipal separate storm sewer systems (MS4s). Municipal or urban areas commonly include large impervious surfaces which contribute to an increase in stormwater runoff. Under Phase I, which started in 1990, the Regional Water Quality Control Boards have adopted National Pollutant Discharge Elimination System General Permit (NPDES) storm water permits for medium (serving between 100,000 and 250,000 people) and large (serving 250,000 people) municipalities. For more information please reference the State Water Resources Control Board Phase I MS4 Permits web page at https://www.waterboards.ca.gov/water_issues/programs/stormwater/phase_i_municipal.html.
California State Water Resources Control Board
Spatial Reference: 102100 (3857)
Initial Extent:
XMin: -14640650.0292725
YMin: 3420898.92365629
XMax: -11856179.9392462
YMax: 5571874.84065842
Spatial Reference: 102100 (3857)
Full Extent:
XMin: -13835981.775318
YMin: 3821337.83561781
XMax: -12679353.6394639
YMax: 5151549.86300791
Spatial Reference: 102100 (3857)
Units: esriMeters
Child Resources:
Info
SharedTemplates
Supported Operations:
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