2025 WA GIS Conference

With the transition from the National Hydrography Dataset to the elevation-derived 3D Hydrography Program (3DHP), data producers and data users are thinking about how to leverage these data to maximize the value to specific programs and use cases. This presentation will discuss additional derivatives and attributes such as fine-scale catchment delineation, topographically derived bank-full, catchment area, stream order, etc. as well as adjacent datasets such as stormwater networks, wetlands, and landcover that can be further integrated to potentially increase the utility of the base 3DHP data for Washington's user base.