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Weekly Water Watch

Weekly Water Watch IconDuring the summer summer recreation season, our Weekly Water Watch e-newsletter provides updates on E. coli  and microcystin beach advisories, important water quality news, and water-related events across the state.   

Check back for updated beach advisories each week (disponible en Español) or sign up for the newsletter to get them in your inbox.

Read the September 9 issue for the end of season wrap and notable stats from the 2022 summer beach advisories. Read the latest issue of Weekly Water Watch for complete details.

Learn more about beach monitoring.


Beaches are updated each Friday with advisories Memorial Day weekend through Labor Day.

Blue Beach Icon No advisories
Brown Beach Icon E. coli advisory
Green Beach Icon Microcystin advisory
Yellow Beach Icon E. coli and microcystin advisories
orange beach icon Exceeds state advisory threshold for E. coli (what does this mean?)
red beach icon Beach closed


2022 Weekly Water Watch Issues

May 27, 2022 June 3, 2022

June 10, 2022

June 17, 2022

June 24, 2022

July 1, 2022 July 8, 2022

July 15, 2022

July 22, 2022 July 29, 2022 August 5, 2022

August 12, 2022

August 19, 2022 August 26, 2022 September 2, 2022


Notable Statistics from Summer 2022

  • North Twin Lake West Beach experienced its first advisory for microcystin in seven years. 
  • With 14 advisories for E. coli and 2 for microcystin, Lake Darling was under a swim advisory for all but the week of June 17, the fourth week of the recreation season. 
  • Since 2014, Backbone has experienced the most E. coli advisories of all monitored beaches at 118. 
  • Four beaches recorded advisories for both E. coli and microcystin. 
  • 25 state park beaches recorded swim advisories this summer. 14 state park beaches did not record an advisory. 
  • Crandall’s Beach (Spirit Lake), Rock Creek Lake, and Springbrook Beach in Guthrie County experienced their first advisories for microcystin since 2015.