Weekly Water Watch
Weekly Water Watch is IEC’s summer newsletter that provides weekly updates on Iowa E. coli and microcystin beach advisories, important water quality news, and water-related events across the state.
Weekly Water Watch started in 2018 to increase awareness of Iowa’s recreational lake water quality and make monitoring data more accessible and easy to understand.
The September 10 Weekly Water Watch recaps notable stats for the summer. Read the September 10 issue of Weekly Water Watch for complete details.
Learn more about beach monitoring.
2021 State Park Lake Tour
Throughout the summer of 2021, IEC Communications Coordinator, Megan McDowell, toured state parks across Iowa and documented lakes and public beaches. Click on the Tour of Iowa State Park Lakes below to see Megan's photos and observations.
Beaches are updated each Friday with advisories Memorial Day weekend through Labor Day.
E. coli advisory
E. coli and microcystin advisories
2021 Weekly Water Watch Issues
|May 28, 2021 ||June 4, 2021 ||June 11, 2021 ||June 18, 2021 |
|June 25, 2021 ||July 2, 2021 ||July 9, 2021 ||July 16, 2021 |
|July 23, 2021 ||July 30, 2021 ||August 6, 2021 ||August 13, 2021 |
|August 20, 2021 ||August 27, 2021 ||September 3, 2021 ||September 10, 2021 |
Notable Statistics from Summer 2021
- Total number of E. coli advisories = 88
- Total number of microcystin advisories = 23 (up from 12 in 2020)
- Four beaches recorded advisories for both E.coli and microcystin
- Of 38 DNR-monitored beaches, 24 total beaches recorded swim advisories this summer. 20 beaches did not record any advisory this year.
- Backbone Beach was under advisory for E. coli for 11 weeks out of 15 weeks total in 2021 - the lowest number it has seen since 2014, but still more than any other state park beach. Since 2014, Backbone has experienced the most E. coli advisories at 105.
Crandall’s Beach (Spirit Lake), Rock Creek Lake, and Springbrook Beach in Guthrie County experienced their first advisories for microcystin since 2015.