Welcome to the 2026 GIS in Action Annual Conference hosted by the Oregon & SW Washington Chapter of the Geospatial Professional Network & Cascadia ASPRS.
The aim of Elevation-Derived Hydrography (EDH) via the USGS 3D Elevation Program (3DEP) is to satisfy the pressing need for better integration between high resolution elevation data and hydrography data. This data has a myriad of applications from infrastructure asset management to conservation, supporting many varieties of analytical and cartographic applications.
