Effective salmon recovery requires the restoration and protection of fish habitats. Kitsap County stream buffer width requirements are set by watertype. Existing regulatory water type maps demonstrably under-represent the extent of fish and fish habitat, and many streams are mapped incorrectly or not at all. Consequently, many stream channels that warrant protection are not receiving appropriate buffers. Through extensive field surveys, Wild Fish Conservancy (WFC) determined and corrected water type classifications in 61 miles of streams in prioritized portions of WRIA 15 using state-sanctioned protocols. Using GPS, WFC accurately mapped previously unmapped and incorrectly mapped water courses. In addition to providing data to ensure informed and responsible management of these watersheds, this assessment generated fish distribution data to assist with restoration project identification and prioritization efforts. WFC incorporated assessment results in a web-based interactive GIS (see www.wildfishconservancy.org) available to resource managers and the general public. Data formats are compatible with State, County, City, and Tribal datasets. This project complements WFC’s SRFB-funded watertype assessments in WRIAs 2, 7, 13, 14, and 22.