How much water can a reservoir really hold?

Mile High Water Talk

With its sophisticated sonar equipment, ‘Reservoir Dog’ presents a clearer picture of our water storage capacity.  

Jason Ellis, survey senior tech, conduct bathymetric survey on Cheesman Reservoir. Jason Ellis, survey senior tech, conducts a bathymetric survey on Cheesman Reservoir.

By Kristi Delynko

With a likeness to Captain Nemo and his Nautilus submarine, Angelo Martinez expertly steers his vessel — known as “Reservoir Dog” — through Cheesman Reservoir. But unlike Nemo, survey supervisor Martinez doesn’t need a submarine to see what’s at the bottom. Denver Water uses bathymetric surveying, sonar and GPS technology to map the contours of the reservoir floor.

Like the Nautilus — depicted as ahead of its time in Jules Verne’s classic novel — Reservoir Dog houses some pretty sophisticated equipment. The department upgraded its survey instruments this year, allowing the team to more efficiently gather data with a more expansive sonar reach.

In a single day, surveyors can now gather up to 10 million data points…

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