According to a recent Facebook post from Nevada State Parks, The Nevada Department of Health and Human Services has upgraded the Harmful Algae Bloom (HAB) Advisory on the Lahontan Reservoir to a HAB Warning due to higher levels of cyanobacteria in the water.
They say that pets should stay away from the water, and swimming for anyone is not recommended.
Update (6/27/2025, 12:25 p.m.):
The Nevada Department of Health and Human Services has reported that the Eagle Valley Reservoir has been placed under a Harmful Algae Bloom (HAB) Watch advisory along with the previously reported Lahontan Reservoir.
They warn that people and pets need to use caution when coming in contact with affected water. Areas with algae accumulation should be avoided completely.
For more information on the HAB Watch and the latest information, check out the Office of State Epidemiology's website.
Original Story (6/6/2025, 7:34 p.m.):
The Lahontan State Recreation Area has shared news that the Lahontan Reservoir has been placed under an HAB Watch Advisory.
The advisory was placed due to an active harmful algae bloom.
Officials say that visual and satellite imagery checks have indicated a possible bloom, and water tests are currently being done by the Nevada Division of Environmental Protection.
The toxic algae can cause serious health issues for both humans and animals.
If you're out swimming or recreating and notice that the water looks discolored or smells unusual, stay away. Pets should be kept away from the water entirely.
For more information about harmful algae blooms, visit the Nevada Department of Environmental Protection's website.
