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Water Quality Standards for Wetlands

EPA Initiative

Enhancing State and Tribal Wetlands Program Initiative

EPA's webpage on Water Quality and 401 Certification

Section 401 Certification Clean Water Act (EPA website)

Clean Water Act Section 401 Water Quality Certification: A Water Quality Protection Tool for States and Tribes (2010)

Section 303 of the Clean Water Act -  Water Quality Standards and Implementation Plans

Water Quality Standards Policy and Guidance

Environmental Council of State (ECOS) Green Report: The State's Definition of 'Waters of the State'

River Network 401 Water Quality Certification Basics

Congressional Research Service Report for Congress - Clean Water Act Section 401:  Background and Issues

EPA Fact Sheet: Section 401 Certification and Wetlands