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. Contacts Frequently Asked Questions 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. Helpful Documents & Links Read our guides and manuals, fact sheets, and sample documents that have been developed for streams, lakes, reservoirs and wetlands. Public Notices View current and archived public notices of individual certification applications and important general information postings related to our programs. Application Forms & Documents 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. 401 & Isolated Wetlands/Waters Program Learn about how to apply for a water quality certification or isolated wetlands/waters permit and associated stormwater management planning. General Certifications Browse isolated/ non-404 permits, nationwide permits, regional general permits, expired general certifications, and more. Riparian Buffer Protection Program Learn about the various riparian buffer protection programs that are implemented throughout the state. Also find maps, clarification memos, and helpful documents. Stream & Wetland Mitigation Program Learn about the stream and wetland compensatory mitigation program implemented throughout the state. Also find templates, guidance documents, and mitigation bank information. Nutrient Offset & Buffer Mitigation Program Learn about the nutrient offset and buffer compensatory mitigation program and find templates, guidance documents, and mitigation bank information. Compliance Assistance Program Learn about technical assistance provided on environmental compliance and enforcement issues across the state, how to access case files, and marina information. Surface Water Identification Training and Certification (SWITC) Learn about the SWITC course, discover when future classes are being offered, and find links to register for upcoming classes or waitlists. Laserfiche 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. Application Tracker Map 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. 401 & Buffer Permit Tracker Map 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. Rules & Statutes Read the rules and statutes that govern our streams and wetlands.