EPA · discharge permits by watershed

Subbasin 10020006

• 15Current permits
• 1States
• 2Watersheds

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

This subbasin contains 2 watersheds, each with its own page of permits. The table below is a sample of the 15 current permits recorded here; the pollutant list above names every limit EPA attaches to a permit in this subbasin.

By state

• Montana15

Watersheds inside this subbasin

• Watershed 10020006036
• Watershed 10020006056

The same permits, cut another way

The 15 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 09030005 10
• Subbasin 09030006 8
• Subbasin 09030008 6
• Subbasin 09030009 3
• Subbasin 09040001 12
• Subbasin 10020001 6
• Subbasin 10020002 43
• Subbasin 10020003 19
• Subbasin 10020004 22
• Subbasin 10020005 50
• Subbasin 10020007 77
• Subbasin 10020008 716
• Subbasin 10030101 291
• Subbasin 10030102 173
• Subbasin 10030103 19
• Subbasin 10030104 56
• Subbasin 10030105 17
• Subbasin 10030201 18
• Subbasin 10030202 24
• Subbasin 10030203 62

Permits discharging here