Fresno Reservoir Fish Kill Likely as Water Drops Due to Canal ProblemNews Type: State Source: Billings Gazette
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Irrigators and anglers will see Fresno and Nelson reservoirs drop substantially over the next month.
Failure of the Bureau of Reclamation’s water delivery structures on the St. Mary Canal near the North Fork of the Milk River are behind the plummeting lake levels.
Fresno Reservoir is projected to be 24 feet below full pool by Aug. 15. Studies have shown that reservoir levels 20 feet below full pool for extended periods of time, especially into winter, can kill fish.