3D Hydrography Project | USGS | ArcMap with LP360
As part of the 3D Hydrography Program (3DHP) under the U.S. Geological Survey (USGS), I contributed to the nationwide effort to enhance the accuracy and utility of hydrographic data derived from LiDAR. My primary responsibility was the 2D digitization of hydrographic features, including streams, rivers, and waterbodies, on bare-earth LiDAR-derived digital elevation models (DEMs). This work was performed using the LP360 extension in ArcMap and adhered closely to 3DEP Elevation-Derived Hydrography (EDH) specifications, ensuring the hydrologic connectivity and spatial integrity of the datasets.
In addition to feature extraction, I developed and executed rigorous QA/QC workflows to validate the topological correctness and alignment of features across multiple data layers. These workflows ensured that all deliverables met stringent client-defined accuracy and production standards. My role in this project helped support a critical national mapping initiative, enabling improved flood modeling, watershed management, and environmental monitoring across the U.S.
This multi-source validation process enabled me to fine-tune the mapping output and capture subtle transitions between water bodies and surrounding terrain. I successfully met the quality standards, delivered ahead of schedule, and ensured that the final deliverables were both accurate and reliable. The project demonstrates my ability to combine technical expertise with efficient project execution in a GIS environment.