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County surveyors use hydro‑drone to update Settlement Canyon reservoir capacity, find ~3% loss since 1990s
Summary
Tooele County surveyors presented a drone-based bathymetry survey of Settlement Canyon Reservoir that produced a new volume model and an estimated 3% capacity loss since Army Corps estimates in the 1990s; staff said rapid re-surveys will help plan dredging and emergency response.
Tooele County surveyor staff demonstrated a new drone‑based bathymetry survey that produced an updated model of Settlement Canyon Reservoir and an estimate of modest capacity loss compared with older Army Corps of Engineers figures.
Recorder‑Surveyor Jerry Helton introduced the presentation and said the drone work will allow county staff and irrigation companies to monitor reservoir capacity much more frequently and accurately than the decades‑old estimates. Senior field surveyor Hayden Langston showed an AutoCAD surface compiled from sonar and survey‑grade GPS data and said the new method lets…
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