Harmful Algal Blooms Home

Please Note: This map provides current data on harmful algal blooms AND waterborne pathogens. DWQ does not monitor all the sites on the map for both types of contaminants.

Monitoring Locations

Health Watch

Advisory Warning

Danger Warning

• Select a Waterbody
  • Adams Reservoir
  • Bear Lake
  • Big Sand Wash Reservoir
  • Blackridge Reservoir
  • Bountiful Pond
  • Box Creek Reservoir
  • Burt Spring Pond
  • Causey Reservoir
  • Colorado River
  • Cottonwood Reservoir
  • Cutler Reservoir
  • Deer Creek Reservoir
  • Deer Valley Ponds
  • East Canyon Reservoir
  • Echo Reservoir
  • Farmington Pond
  • Flaming Gorge Reservoir
  • Green River
  • Gunlock Reservoir
  • Highland Glen Reservoir
  • Hobbs Reservoir
  • Holmes Reservoir
  • Huntington Reservoir
  • Hyrum Reservoir
  • Joes Valley Reservoir
  • Jordanelle Reservoir
  • Kens Lake
  • Lost Creek Reservoir
  • Manila Creek Pond
  • Mantua Reservoir
  • Maple Dell BSA Pond
  • Matt Warner Reservoir
  • Mill Creek (Grand)
  • Newton Reservoir
  • North Fork of the Virgin River
  • Otter Creek Reservoir
  • Palisade Reservoir
  • Payson Lakes
  • Pineview Reservoir
  • Piute Reservoir
  • Porcupine Reservoir
  • Quail Creek Reservoir
  • Red Fleet Reservoir
  • Rockport Reservoir
  • Salem Pond
  • San Juan River
  • Sand Hollow Reservoir
  • Scofield Reservoir
  • Smith and Morehouse Reservoir
  • South Fork Ogden River
  • Spanish Fork Reservoir
  • Spring Lake
  • Starvation Reservoir
  • Steinaker Reservoir
  • Strawberry Reservoir
  • Tibble Fork Reservoir
  • Utah Lake
  • Weber Basin Job Corp Pond
  • Weber River
  • Whitney Reservoir
  • Willard Bay
  • Yuba Lake

Report a Bloom

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

Call Utah Poison Control Center

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

Protect Your Dog

Harmful algal blooms (HABs) develop when naturally occurring cyanobacteria in the water multiply very quickly to form green or blue-green water, scum, or mats. These blooms can produce potent cyanotoxins that pose serious health risks to humans, pets, and livestock.

How To Stay Safe

1. Don’t swallow water when swimming.
2. Wash hands with clean water before eating or preparing food.
3. Clean fish well and discard the guts.
4. Keep animals away.
5. Recognize the signs of a bloom, and when in doubt, stay out.

Visit HABs Photo Gallery

See examples of HABs in Utah in the photo gallery.

Protect Yourself

Learn about health risks to people and pets exposed to algal blooms and what you can do to recreate safely.

Learn About HABs

Got questions? Find more info about harmful algal blooms.

Contact Information

Ben Holcomb, (bholcomb@utah.gov) Manager, Standards & Technical Services
(385) 271-4484