EPA · discharge permits by watershed

Subbasin 18050004

• 115Current permits
• 2States
• 7Watersheds

A subbasin is a unit of the national Watershed Boundary Dataset, and water crosses state lines: this one carries permits in California, Arizona. Each permit is placed by the outfall EPA names as its representative discharge point.

This subbasin contains 7 watersheds, each with its own page of permits. The table below is a sample of the 115 current permits recorded here; the pollutant list above names every limit EPA attaches to a permit in this subbasin.

By state

• California114
• Arizona1

Watersheds inside this subbasin

• Watershed 180500040847
• Watershed 180500041041
• Watershed 180500040711
• Watershed 18050004055
• Watershed 18050004094
• Watershed 18050004023
• Watershed 18050004063

The same permits, cut another way

The 115 permits whose outfall sits in this subbasin, grouped by one attribute at a time: the class of permit, the Clean Water Act program it was issued under, the type of coverage, and the size of the discharger. Each figure below counts the permits in that group.

Other subbasins

• Subbasin 18040006 9
• Subbasin 18040007 5
• Subbasin 18040009 27
• Subbasin 18040010 29
• Subbasin 18040012 18
• Subbasin 18040013 15
• Subbasin 18040051 16
• Subbasin 18050001 28
• Subbasin 18050002 95
• Subbasin 18050003 67
• Subbasin 18050006 10
• Subbasin 18060002 21
• Subbasin 18060004 4
• Subbasin 18060005 56
• Subbasin 18060006 21
• Subbasin 18060008 7
• Subbasin 18060010 15
• Subbasin 18060013 14
• Subbasin 18060015 19
• Subbasin 18070101 4

Permits discharging here

What this page shows

This page covers Clean Water Act discharge permits in watershed 18050004. It lists 115 permits on this page. Of the permits in the whole watershed, 114 are located in CA and 1 is located in AZ.