Drought conditions mean lower water levels at Hebgen Reservoir

Drought conditions mean lower water levels at Hebgen Reservoir
Efforts required to protect Madison River fisheries
MTN file photo
and last updated 2021-07-26 15:15:16-04
BUTTE — Efforts by NorthWestern Energy to protect the fisheries on parts of the Madison River will lead to lower water levels at Hebgen Reservoir, company officials say.
Current drought conditions, the result of low snowpack, low spring precipitation and recent hot, dry weather have led to challenging low water conditions in the Madison River system. These conditions are resulting in lower water levels at Hebgen reservoir to protect fisheries on the lower Madison River.
Water releases from Hebgen Reservoir feed Ennis Reservoir to support pulsed flow releases out of Madison Dam. The pulsed flow releases protect the lower Madison River from reaching lethal temperatures to fish. Hot, dry weather in June and July has required almost daily pulses. Pulsed flows have so far successfully kept river water temperatures at safe levels this summer.

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