Watershed
Watershed Information Network Homepage
Ecological Guidelines at the Watershed Scale
EPA's Final Watershed-Based NPDES Permitting Implementation Guidance (PDF)
17 Dec 2003
Draft Watershed-Based National Pollutant Discharge Elimination System (NPDES) Permitting Implementation Guidance: Notice of Availability
(68 FR 51011, 25 Aug 2003)
Availability of Clinch and Powell Valley Watershed Ecological Risk Assessment Final Document
(68 FR 12351, 14 Mar 2003)
EPA Watershed-Based Permitting Policy Statement (PDF)
7 Jan 2003
