Western US Drought Spurs Toxic Algal Blooms and Heightened Wildfire Threats

The Oregon Health Authority and the state Department of Environmental Quality have begun seasonal monitoring for cyanobacteria blooms in eastern Oregon reservoirs such as Thief Valley, Prineville, Hells Canyon, and others. Warm weather and elevated water temperatures can cause toxic algae that may cause diarrhea, vomiting, dizziness, or skin rashes in humans and can be fatal to dogs and other animals. Officials advise the public to avoid swimming or high‑speed boating in water that looks foamy, pea‑green, or has visible mats, and to seek veterinary care for affected pets.

At the same time, the western United States is experiencing a severe drought after an unusually warm winter left snowpack at less than 50 % of median levels across the Rockies, Cascades, and Sierra Nevada. The reduced snowpack threatens drinking water supplies, irrigation, hydroelectric power, and salmon runs, while also creating conditions for a fast‑moving, high‑intensity wildfire season. State officials warn that fires could spread more quickly and be more significant than in typical years.