The Snake River looks green from a suspected algae bloom in this photograph supplied by a river ranger with the Bridger-Teton National Forest. The bloom comes at a time when Wyoming Game and Fish has warned anglers not to catch and release fish during warm parts of the day. (Dave Cernicek photo)

A portion of the Snake River has turned green.

A river ranger with the Bridger-Teton National Forest has spotted what’s believed to be an algae bloom in the Snake River just above the confluence with the Hoback River.

David Cernicek, Wild and Scenic River manager, photographed the “strange” blooms. Seen from bridges spanning the river at South Park and Horse Creek, they appear as stripes and are best viewed in the morning, he said.

The blooms come at a time when Wyoming Game and Fish has told anglers not to catch and release fish during the midday when rivers and streams are warm — specifically above 70 degrees. There also are reports of an unprecedented outbreak of foot fungus among professional boatmen in the region.


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Angus M. Thuermer Jr.

Angus M. Thuermer Jr. is the natural resources reporter for WyoFile. He is a veteran Wyoming reporter and editor with more than 35 years experience in Wyoming. Contact him at or (307)...

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