WAPSP_Floodplains_HistoricGeomorphicBoundary

The baseline floodplain extent layer was developed as part of the Partnership’s Floodplain Vital Sign Data Refinement Project. The purpose of the project is to develop consensus about a regional floodplain “footprint” and assess the condition of the floodplain across all (17) major rivers in the Puget Sound to help monitor progress in protecting and restoring floodplain conditions. This layer represents the floodplain footprint and is an aggregate of three primary data sources: NOAA, FEMA and USGS. Details of these sources are described below.