High concentration of illness-causing microcystins detected
(Quemado, NM, August 5, 2026) — The Gila National Forest has issued a public health and safety area closure of Quemado Lake due to a harmful algal bloom. The area closure prohibits public access to the Quemado Lake parking lot, boat dock, dam area, Quemado Lake Fishing Trail #144, Lakeshore Access Trail #1441, Juniper-Lake Access Trail #1442, and Cove-Lake Access Trail #1443 and Quemado Lake itself.
The Surface Water Quality Bureau of the New Mexico Environment Department (NMED) has detected very high levels of microcystins in their water samples from Quemado Lake, indicating a potential for acute poisoning and short- or long-term effects to humans or animals. To protect the public, the NMED has issued a danger advisory and recommended closing the area. The water is unsafe for drinking, swimming, wading, boating, paddling, water skiing, or fishing, and dogs should not be allowed to play in the water. NMED will continue to sample water quality and provide updated guidance as conditions develop.
Harmful algal blooms occur most often during the summer when sunlight warms stagnant water with high nutrient levels, creating a hospitable environment for them. Learn more about harmful algal blooms and view a map of HAB warnings and advisories at New Mexico Environment Department - Harmful Algal Blooms.
Closure Order # 03-06-03-26-003 can be found online on the Gila National Forest Alerts page. The area closure will remain in effect until NMED advises that the lake is safe for public use.
