NorthWestern Energy will increase the volume of water releases from Hebgen Dam to flush fine sediments from Madison River gravel to enhance the quality of spawning gravels that support the healthy wild trout fishery.
Hebgen Dam outflows will gradually increase over several days to coincide with peak runoff in the West Fork Madison River and other tributary streams.
The flow release increase is planned to begin May 26 and will continue through the end of May. River recreationists should be aware of the changing conditions and take appropriate precautions.
The Madison River Flushing Flow...