Skip to main content

Oregon State Flag An official website of the State of Oregon »

Section 401 Hydropower Certification


DEQ issues 401 certifications for hydroelectric projects and the Federal Energy Regulatory Commission administers the federal licensing process. The water quality certification typically includes operating conditions designed to ensure project operations will not violate water quality standards.

DEQ coordinates the section 401 certification licensing process with Oregon's hydroelectric water rights program administered by the Oregon Water Resources Department and conducted independently under the state's administrative rules (OAR 340-048). 

Lower Columbia River

DEQ's letter of objection to EPA's draft NPDES permits for Lower Columbia River

Final 401 Hydropower certifications