Holmes Reservoir Recreational Monitoring 2021

Report a Bloom

24-Hour DEQ Environment Incidents Line: (801) 536-4123

Call Utah Poison Control Center

Poison Control (800) 222-1222

If you believe you or your pet have been exposed to a harmful algal bloom, call (800) 222-1222.

Update July 15, 2021

The DWQ HABs monitoring team visited Holmes Reservoir on July 14th. Harmful algal blooms were not observed. Cyanotoxin and cell density samples were collected, and results are pending. As UDWQ and UDOH continue to visit and monitor waterbodies, updates will be posted.


Update July 8, 2021 (Waterborne Pathogens)

On June 28th, Davis County visited Holmes Reservoir. Samples from near the southeast end of the dam did not contain E. coli above recreational thresholds. Routine sampling will continue monthly.


Update June 2nd, 2021

The Division of Water Quality and the Utah Department of Health began monitoring for waterborne pathogens on June 1st, 2021. As UDWQ and UDOH continue to visit and monitor waterbodies, updates will be posted.