Frank L. Engel, Ph.D.¶
Geographer · Hydrologic Remote Sensing · USGS
I develop and operationalize non-contact surface-water measurement technologies at the U.S. Geological Survey. My work spans image velocimetry, national hydrologic imagery infrastructure, and entropy-based discharge computation — bridging research-grade science with operational field practice at national scale.
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Image Velocimetry
Creator of IVyTools — the first operational software enabling USGS to measure river discharge from video. Trained 190+ staff nationwide.
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National Imagery Infrastructure
Co-Founding Architect of NIMS — cloud platform serving 1,000+ cameras and 110M+ images for hydrologic monitoring across the United States.
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Entropy-Based Discharge
Operationalized the Probability Concept method and built SurfVelTools for computing streamflow from minimal surface velocity observations.
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ECHO AI Skunkworks
Founded a rapid-prototyping team evaluating AI-assisted tools for camera imagery and hydrologic workflows.
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ML Image Velocimetry
Deep learning frameworks for fully autonomous velocity estimation from river video — collaborations with Penn State and Stevens Institute.
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Training & Teaching
National training curriculum for non-contact methods — 190+ staff trained, plus university short courses and graduate advising.