courtesy Steven Lynn
Dead fish can be seen floating at Tantra Lake in Boulder. Getting your player ready...
Boulder officials believe high heat and recent rains led to an algae bloom in Tantra Lake over the weekend.
The die-off alarmed residents of the nearby apartments, who worried that some kind of chemical exposure may have been to blame.
But Andy Taylor, of Boulder’s Water Quality and Environmental Services, said that after an inspection of the south Boulder lake on Monday afternoon, officials believe it was algae that ultimately killed the fish.
“That pulls the oxygen out of the water,” Taylor explained.
Taylor said tests on Monday at the small lake at 1000 W. Moorhead Circle showed high pH levels and that the water temperature was 85 degrees.
“That’s more basic than the fish prefer,” Taylor said.
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