Update October 7, 2021 (HABs) Samples taken on 9/29/2021 were returned on October 6th. The sample from along the north shore contained a toxigenic cell density of 2,879,920 cells/mL of Microcystis which is well above the UDWQ/UDOH recommended Warning Advisory threshold of 100,000 cells/mL. DWQ will continue to watch the reservoir closely. Update September 30, …
Read MoreUpdate November 2, 2020 The Warning Advisory for Mantua Reservoir has been removed as a result of the end of the sampling and monitoring recreation season. The Utah Division of Water Quality’s water recreation season runs from May 1 through October 31. At this time, no further monitoring or sampling for harmful algal blooms or …
Read MoreClick photo to see larger version October 2019 September 2019 August 2019
Read MoreVisit the 2019 Photo Gallery Update November 7, 2019 The Bear River Health Department (BRHD) has removed the Danger and Warning Advisories on Mantua Reservoir. Toxin test results received from the Utah Public Health Lab (UPHL) for samples collected by the Division of Water Quality (DWQ) at the dock near the dam on October 25, …
Read MoreSelect photo to see larger version. May 22, 2018
Read MoreFind the latest 2018 harmful algal bloom monitoring updates and health advisories for Mantua Reservoir here.
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