UINTAH COUNTY, Utah (ABC4) — Health officials have found harmful algal blooms at Calder and Matt Warner reservoirs. According to the TriCounty Health Department, which serves Uintah, Daggett, and Duchesne counties, there are Harmful Algal Blooms (HABs) present at Calder and Matt Warner Reservoirs. HABs can produce toxins dangerous to humans and animals.
Harmful algae identified in Uintah County reservoirs
Utah News spotted this story published August 19, 2026 at ABC 4. Full coverage may follow as more sources report.