Scofield 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 October 21, 2021 (HABs)

The Danger Advisory for Scofield Reservoir remains in place.

On October 20th, the DWQ HABs monitoring team visited Scofield Reservoir. Harmful algal blooms were observed and cyanotoxin and cell density samples were collected.

Samples taken from the reservoir shoreline were returned on 10/21/2021 showing toxigenic cell density results of 2,973,219 cells/mL of Aphanizomenon, which is above the UDWQ/UDOH recommended Warning Advisory threshold. The DWQ HABs team will continue to monitor the situation closely.

HABs at Scofield 10/20/2021

Scofield Reservoir
October 20, 2021
Click for a larger version.


Update October 18, 2021 (HABs)

The Danger Advisory for Scofield Reservoir remains in place.

Samples taken from the reservoir shoreline on October 5th show toxigenic cell density results of 25,409,438 cells/mL of Aphanizomenon, which is above the UDWQ/UDOH recommended Danger Advisory threshold. The DWQ HABs team will continue to monitor the situation closely.


Update September 28, 2021 (HABs)

The Danger Advisory for Scofield Reservoir remains in place.

Samples taken from the reservoir on September 20th show toxigenic cell density results of 598,117 cells/mL of Aphanizomenon, which is below the UDWQ/UDOH recommended Danger Advisory threshold. The DWQ HABs team will continue to monitor the situation closely.


Update September 21, 2021 (HABs)

The Danger Advisory for Scofield Reservoir remains in place.

The DWQ HABs monitoring team re-visited Scofield Reservoir on September 20th. Harmful algal blooms were observed and cyanotoxin and cell density samples were collected. Results are pending.


Update September 8, 2021 (Waterborne Pathogens)

On August 24th, the Southeast Health Department visited Scofield Reservoir for routine waterborne pathogens sampling. All samples taken contained E.coli below the recreational threshold. Routine sampling will continue monthly.


Update August 31, 2021 (HABs)

The Danger Advisory for Scofield Reservoir remains in place.

Samples taken from the reservoir on Aug 25, 2021 show toxigenic cell density results of 1,923,476 cells/mL of Aphanizomenon. The DWQ HABs team will continue to monitor the situation closely.


Update August 26, 2021 (HABs)

The Danger Advisory for Scofield Reservoir remains in place.

The DWQ HABs monitoring team re-visited Scofield Reservoir on August 25th. Harmful algal blooms were observed and cyanotoxin and cell density samples were collected. Results are pending.

Scofield Harmful Algal Bloom

Scofield Reservoir,
August 26, 2021
Click for a larger version.


Update August 19, 2021 (HABs)

The Danger Advisory for Scofield Reservoir remains in place.

Toxigenic cyanobacteria cell density results for samples taken from Scofield Reservoir at Angler’s Access on 8/12/2021 were delivered on 8/18/2021. They show toxigenic cyanobacteria cell counts at 2,873,867 cells/mL of Aphanizomenon, which is below the UDWQ/UDOH recommended Danger Advisory threshold.

The DWQ HABs monitoring team re-visited Scofield Reservoir on August 17th. Harmful algal blooms were observed and cyanotoxin and cell density samples were collected. Results are pending.


Update August 13, 2021 (HABs)

The Danger Advisory for Scofield Reservoir remains in place.

The DWQ HABs monitoring team visited Scofield Reservoir on August 12th. Harmful algal blooms were observed and cyanotoxin and cell density samples were collected. Results are pending.


Update July 30, 2021 (Waterborne Pathogens/HABs)

The Danger Advisory for Scofield Reservoir remains in place.

Toxigenic cyanobacteria cell density results for samples taken from Scofield Reservoir at Angler’s Access on 7/27/2021 were delivered on 7/29/2021. They show toxigenic cyanobacteria cell counts at 99,780,297 cells/mL of Aphanizomenon, which is well above the UDWQ/UDOH recommended Danger Advisory threshold.

Protect yourself during harmful algal blooms to keep yourself, your family, and your pets safe.

On July 8th, the Southeast Health Department visited Scofield Reservoir for routine waterborne pathogens sampling. All samples taken contained E.coli below the recreational threshold. Routine sampling will continue monthly.


Update July 28, 2021 (HABs)

The Danger Advisory for Scofield Reservoir remains in place.

The DWQ HABs monitoring team visited Scofield Reservoir on July 27th. Harmful algal blooms were observed and cyanotoxin and cell density samples were collected. Results are pending.

Protect yourself during harmful algal blooms to keep yourself, your family, and your pets safe.

Protect yourself during harmful algal blooms to keep yourself, your family, and your pets safe.


Update July 22, 2021 (HABs)

The Danger Advisory for Scofield Reservoir remains in place.

The DWQ HABs monitoring team visited Scofield Reservoir on July 21st. Harmful algal blooms were observed and cyanotoxin and cell density samples were collected. Results are pending.

Protect yourself during harmful algal blooms to keep yourself, your family, and your pets safe.


July 16, 2021

A Danger Advisory has been issued for Scofield Reservoir by the Southeast Utah Health Department.

A Danger Advisory indicates a high potential for acute poisoning and long-term illness from harmful algal bloom exposure. Recreators are advised not to swim, waterski, or boat in the waterbody.

Toxigenic cyanobacteria cell density results for samples taken from Scofield Reservoir at Angler’s Access on 7/14/2021 were delivered on 7/15/2021. They show toxigenic cyanobacteria cell counts at 72,825,198 cells/mL.

Protect yourself during harmful algal blooms to keep yourself, your family, and your pets safe.


Update July 12, 2021 (HABs)

The Warning Advisory for Scofield Reservoir remains in place.

The DWQ HABs monitoring team visited Scofield Reservoir on July 8th. Harmful algal blooms were observed at the southwest beach, Price River below the reservoir, Scofield State Park at Mountain View, Anglers Access, and Madsen View. Cyanotoxin and cell density samples were not collected.

Scofield Reservoir close up algal bloom

Scofield Reservoir close up,
July 12, 2021
Click for larger version


Update July 1, 2021 (HABs)

The Warning Advisory for Scofield Reservoir remains in place.

The DWQ HABs monitoring team visited Scofield Reservoir on June 30th. Harmful algal blooms were observed at the southwest beach, Price River below the reservoir, Scofield State Park at Mountain View, and shore near County Boat 12B. Cyanotoxin and cell density samples were collected and results are pending.

Protect yourself during harmful algal blooms to keep yourself, your family, and your pets safe.


Update June 23, 2021

The Southeast Utah Health Department has issued a Warning Advisory for Scofield Reservoir.

The DWQ HABs monitoring team visited Scofield Reservoir on June 21st. Harmful algal blooms were observed at the southwest beach, Price River below the reservoir, Scofield State Park at Mountain View, and shore near County Boat 12B. Cyanotoxin and cell density samples were collected. Results were returned on June 23rd, showing 1,964,929 cells/mL toxigenic cyanobacteria, which is above the UDWQ/UDOH recommended Warning Advisory threshold of 100,000 cells/mL.

Protect yourself during harmful algal blooms to keep yourself, your family, and your pets safe.


Update June 16, 2021

The Southeast Utah Health Department has issued a Health Advisory for Scofield Reservoir.

Note: This is not a formal advisory level but rather an indication that a bloom may exist or become more severe based on available information from Utah DWQ and Utah Department of Health.

Toxigenic cyanobacteria cell densities results from June 9th, 2021 were returned and showed cell counts at 24,372 cells/mL of Dolichospermum and Microcystin, both high toxin producers. These cell densities are below the UDWQ/UDOH recommended Warning Advisory threshold of 100,000 cells/mL.

Protect yourself during harmful algal blooms to keep yourself, your family, and your pets safe.


Update June 10, 2021

The DWQ HABs monitoring team visited Scofield Reservoir on June 9th. Harmful algal blooms, specifically grass clippings, were observed at the Southwest beach, Scofield State Park at Mountain View, and near the Northern shoreline . Cyanotoxin and cell density samples were collected, and results are pending.


Update June 2, 2021

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