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Officials will not release cool water from a Colorado River reservoir to protect threatened fish
Officials said the release would have cut hydropower output and forced utilities to buy more expensive power, affecting about 155 customers.
On Thursday, federal officials announced they will not release cool water from Glen Canyon Dam this year, prioritizing hydropower production over protecting threatened native fish downstream.
Lake Powell is just 23% full after decades of overuse and climate change, forcing officials to balance conserving the humpback chub against electricity costs for more than 40 million people.
The Bureau considers cool water releases when average daily temperatures exceed about 60 F for three consecutive days, a measure that prevents invasive Smallmouth bass from spawning in the river below.
Andy Colosimo, executive director of the Colorado River Energy Distributors Association, praised the decision as "the right call," while Matt Rice of American Rivers called it disappointing and feared a "death sentence to humpback chub."
Wayne G. Pullan, regional director of the Upper Colorado Basin, wrote that the agency will focus on "expanded rapid response removal actions," innovative tools, and structural solutions to address ongoing challenges.