Hydro Feature Extraction From High-Resolution Digital Elevation Models - AWRA 2026

This is from the online program of the AWRA 2026 Geospatial Water Technology Conference for Session 31: "California has developed a suite of custom tools and streamlined workflows to produce Elevation-Derived Hydrography (EDH) that is both technically robust and fully aligned with U.S. Geological Survey (USGS) 3D Hydrography Program (3DHP) requirements. This presentation offers a practical, behind-the-scenes look at how we generate EDH efficiently while strengthening quality control, compliance, and repeatability across projects. We will highlight a selection of the tools and processes used to produce EDH, condition flow, and automate validation checks, compliance, and reporting to support consistent review and delivery. Attendees will see how these components work together as an integrated production system, reducing manual effort, minimizing rework, and improving confidence that outputs meet 3DHP specifications. Whether you are building a new EDH workflow, refining an existing process, or simply looking for ways to improve throughput without sacrificing standards, this session will provide actionable ideas." https://events.rdmobile.com/Sessions/Details/3454870