Elevation Derived Hydrography Presentation, Esri User Conference 20240716

These are slides from the presentation by the California Hydrography Stewardship team at the Esri User Conference on July 16, 2024, "ArcGIS Pro & Beyond:Tools for the Next Generation of National Hydrography Data." Joel Osuna-Williams and Erik Fintel describe the workflow for deriving hydrography from LiDAR digital elevation models using ArcGIS Pro and other custom tools. Here is the abstract: Sometimes we just have to walk away from the old ways of mapping and embrace change. The National Hydrography Dataset (NHD) stewards for California have abandoned the ArcMap tools and turned to the next chapter, creating highly accurate LiDAR-derived surface water data for the 3D Hydrography Program (3DHP). Spatial Analyst tools are useful, but some extra creativity is essential to getting the job done in compliance with national specifications. See how custom python tools alongside ArcGIS Pro tools build the workflow to solve for barriers, manage z values, ensure QC, and more.