11 Donkeys Found Dead in Death Valley Due to Toxic Algae Bloom

National Park Service warns of hazardous water at Owls Hole Spring following the discovery of deceased burros.

The National Park Service suspects a toxic algae bloom at Owls Hole Spring caused the deaths of 11 donkeys in Death Valley National Park.
The algae bloom is believed to have been triggered by stagnant, warm water and high levels of nitrogen and phosphorus from defecation.
Officials have placed warning signs at the spring, advising that the water is unsafe for humans and pets to drink or touch.
The feral burros, descendants of animals released by miners during the Gold Rush, are considered an invasive species in the park.
Efforts to remove the burros have been hampered by funding issues, but the park service plans to resume large-scale roundups in 2026.