Watershed · by program

Storm Water Small MS4s discharge permits in subbasin 12100203

• 3Permits
• 528Permits in the subbasin
• 1States the subbasin touches

3 of the 528 Clean Water Act discharge permits in hydrologic subbasin 12100203 are filed as Storm Water Small MS4s. A subbasin is a watershed unit, not a political one, so it crosses state lines: this one is named on permits in TX.

Where the subbasin lies

• TX 528 permits in the subbasin

Other cuts of subbasin 12100203

• program: POTW 15
• program: Storm Water Construction 379
• program: Storm Water Industrial 54
• major or minor: Major dischargers 6
• major or minor: Minor dischargers 507
• permit type: General permit coverage 462
• permit type: Individual permits 66

Every discharge permit in subbasin 12100203 →

Figures from EPA’s ICIS-NPDES download.