Harmful Algal Blooms


Important Update:

September 25, 2018--the Utah Department of Environmental Quality and, or local health departments currently have advisories or eight (8) water bodies throughout Utah. Please see the DEQ HABs page for the locations and advisory levels. We will try to have additional information below about the water bodies on the active advisories list that are of the most concern to agriculture users. The DEQ page has information on all advisories.

September 24, 2018--The Southwest Utah Public Health Department (SWUPHD) is issuing a "danger" advisory for Panguitch Lake due to hazardous levels of toxic algae. People and animals should keep out of the water until further notice. Warning signs are being posted at the lake and health officials will continue to sample and monitor the water there.


Starting in mid-June 2017, an algal bloom started forming on Utah Lake. Please click on the What's the Latest News link below as well as the agency links to find out the latest news and information. UDAF is the primary source of information about livestock and agricultural crops. Click on the agency links for information related to human health, pet health, recreation and general water quality information.


Harmful Algal Blooms Information and Resources


Harmful algal blooms (HAB) are the result of a rapid increase or accumulation of cyanobacteria in a water body. Cyanobacteria, sometimes known as blue-green algae, can cause blooms in water bodies when nutrients, sunlight, pH, salinity, temperatures, and other environmental factors are optimum for their growth. Some types of cyanobacteria can produce cyanotoxins which can harm the liver or nervous system of humans and animals when exposed to or ingested. In the past, some animals which have consumed water or algae mats with harmful toxins have died.


What's the Latest News?

Agency Links

Sampling Data Maps

Additional Resources


More Information about HAB