401 & Buffer Permitting Branch
The 401 & Buffer Permitting Branch is responsible for implementing the state's waters, wetlands, and riparian buffer regulatory programs and assisting with compliance and enforcement procedures.
Learn about our state's water resources including streams, wetlands, waters, and riparian buffers; explore the 401 certification, isolated waters permitting, buffer authorization, and buffer variance processes; and browse helpful links.
Read our guides and manuals, fact sheets, and sample documents that have been developed for streams, lakes, reservoirs and wetlands.
View current and archived public notices of individual certification applications and important general information postings related to our programs.
Find application forms and help documents for 401 certifications, isolated waters permits, stream determinations, shoreline stabilization and lake area residence work, and buffer authorizations and variances.
Learn about how to apply for a water quality certification or isolated wetlands/waters permit and associated stormwater management planning.
Browse isolated/ non-404 permits, nationwide permits, regional general permits, expired general certifications, and more.
Learn about the various riparian buffer protection programs that are implemented throughout the state. Also find maps, clarification memos, and helpful documents.
Learn about the stream and wetland compensatory mitigation program implemented throughout the state. Also find templates, guidance documents, and mitigation bank information.
Learn about the nutrient offset and buffer compensatory mitigation program and find templates, guidance documents, and mitigation bank information.
Learn about technical assistance provided on environmental compliance and enforcement issues across the state, how to access case files, and marina information.
DWR’s Document Management System lets you view and print files for projects that include buffer impacts, stream determinations, mitigation, 401 certifications, and 401 stormwater management plans.
Check the status of pending permit applications or plan approvals via our clickable map. You may search by location, permit type, facility name, or permit number to track progress from the date of receipt of an application until a final decision is made.
Find information on issued and completed projects with a 401 water quality certification, isolated wetlands/waters permit, buffer authorization, and/or buffer variance for both Department of Transportation (DOT) and non-DOT projects on this clickable map.
Read the rules and statutes that govern our streams and wetlands.