Panguitch Lake Algal Bloom Monitoring 2019

Warning Advisory

  • Do not swim or water ski in this area.
  • Avoid areas of algae scum when boating.
  • Keep animals away.
  • Do not ingest the water.
  • Clean fish well and discard guts.

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.

Get BloomWatch App

Help us track cyanobacteria blooms with your smartphone. Go to cyanos.org for more info.

Update October 2, 2019

Panguitch Lake Northeast Shore, September 25, 2019

The Southwest Utah Public Health Department (SUPHD) issued a Warning Advisory for Panguitch Lake on October 1, 2019, after lab results from samples collected by the Division of Water Quality (DWQ) on September 25, 2019, showed cyanobacteria cell-count concentrations exceeding the recreation health-based threshold at three of the four sample locations.

The DWQ monitoring crew observed isolated clumps and spherical nodules seen in the water column. Some of the cyanobacteria had formed into mats with dried, electric-blue cyanobacteria on the surface. Some of the water was milky. The area with the highest visual accumulation of cyanobacteria was at the northeast shore.

A Warning Advisory indicates a moderate relative probability of acute health risk, cell-count density of 20,000 – 10 million cells per milliliter (cells/ml), microcystin levels of 4-2,000 micrograms per liter (µg/L), or anatoxin-a levels above non-detect.

Data Summary

Southeast Boat Ramp

Sample type: Elbow-depth integrated composite sample
Cyanobacteria cell counts: 25,305 cells per milliliter (cell/mL)

Northeast Shore

Sample type: Surface sample
Cyanobacteria cell counts: 5,216,353 cells per milliliter (cells/mL)

Northeast Shore

Sample type: Elbow-depth integrated composite sample
Cyanobacteria cell counts: 820,539 cells per milliliter (cells/mL)

White Bridge (Outlet Stream)

Sample type: Elbow-depth composite sample
Cyanobacteria cell counts: 751 cells per milliliter (cells/mL)


Update September 27, 2019

Panguitch Lake, September 27, 2019

The Divison of Water Quality observed a bloom on Panguitch Lake on September 25, 2019, during routine sampling. Satellite imagery also indicated a bloom on the lake. The monitoring crew collected samples at the Southeast Boat Ramp, Northeast Shore, and White Bridge Outlet Stream. Toxin test results received on September 27, 2019, were below the threshold for a health advisory. Cyanobacteria cell-count concentrations are pending from PhycoTech.

Data Summary

Southeast Boat Ramp

Sample type: Elbow-depth integrated composite sample
Microcystin: <2.0 micrograms per liter (µg/L)
Anatoxin-a: <0.10 µg/L

Northeast Shore

Sample type: Surface sample
Microcystin: <2.0 micrograms per liter (µg/L)
Anatoxin-a: <0.10 µg/L

Northeast Shore

Sample type: Elbow-depth integrated composite sample
Microcystin: 2 micrograms per liter (µg/L)
Anatoxin-a: <0.10 µg/L

White Bridge (Outlet Stream)

Sample type: Elbow-depth composite sample
Microcystin: <2.0 micrograms per liter (µg/L)
Anatoxin-a: <0.10 µg/L