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See how Iowa DNR conducts seaside monitoring assessments at Iowa’s lakes
The Iowa Department of Natural Resources conducts weekly assessments to watch seaside water high quality at 39 state-owned seashores.
More seashores have been added to the not really helpful for swimming listing, in accordance with the newest Iowa Department of Natural Resources seaside monitoring report launched July 25.
Thirteen seashores monitored by the state and two Des Moines space seashores examined excessive for E. coli or poisonous algae.
The Iowa Department of Natural Resources displays water high quality at 39 state-owned swimming seashores and offers weekly updates to the public via its web site and a hotline at 515-725-3434. Sampling begins the week earlier than Memorial Day and continues via Labor Day.
What Iowa DNR seashores will not be really helpful for swimming?
Backbone Beach
- Beach classification: Vulnerable
- Last check date: July 23
- Test outcomes: Exceeded single-sample restrict for E. coli
Beeds Lake Beach
- Beach classification: Vulnerable
- Last check date: July 22
- Test outcomes: Exceeded single-sample restrict for E. coli
Black Hawk Lake Beach
- Beach classification: Less susceptible
- Last check date: July 22
- Test outcomes: Exceeded single-sample restrict for E. coli
Bobwhite State Park
- Beach classification: Not accessible
- Last check date: July 22
- Test outcomes: Exceeded single-sample restrict for E. coli
Lake Ahquabi Beach
- Beach classification: Less susceptible
- Last check date: July 23
- Test outcomes: Exceeded single-sample restrict for E. coli
Lake Darling Beach
- Beach classification: Vulnerable
- Last check date: July 23
- Test outcomes: Exceeded single-sample restrict for E. coli and algal toxin ranges
Lake Manawa Beach
- Beach classification: Vulnerable
- Last check date: July 22
- Test outcomes: Exceeded single-sample restrict for E. coli
Lake of Three Fires Beach
- Beach classification: Less susceptible
- Last check date: July 22
- Test outcomes: Exceeded single-sample restrict for E. coli
Nine Eagles Beach
- Beach classification: Vulnerable
- Last check date: July 22
- Test outcomes: Exceeded single-sample restrict for E. coli
Pine Lake South Beach
- Beach classification: Vulnerable
- Last check date: July 22
- Test outcomes: Exceeded single-sample restrict for E. coli
Pleasant Creek Beach
- Beach classification: Less susceptible
- Last check date: July 23
- Test outcomes: Exceeded single-sample restrict for E. coli
Prairie Rose Beach
- Beach classification: Vulnerable
- Last check date: July 22
- Test outcomes: Exceeded single-sample restrict for E. coli
Union Grove Beach
- Beach classification: Vulnerable
- Last check date: July 23
- Test outcomes: Exceeded single-sample restrict for E. coli
What Des Moines space seashores will not be really helpful for swimming?
Additionally, two beaces within the Des Moines space, which aren’t managed by the DNR, have reported excessive E. coli ranges.
- Blue Heron Lake Beach at Raccoon River Park: Testing on July 24 discovered E. coli ranges above the suitable vary, in accordance with the West Des Moines Parks and Recreation Department.
- Easter Lake: As of July 24, Polk County Conservation has decided that the degrees of E. coli within the water exceed the suitable vary, and swimming just isn’t really helpful.
What Iowa seashores have a particular standing?
- Lake Keomah Beach: Monitoring by DNR has been suspended for the 2025 season. The DNR drained the lake in July 2024 for a significant renovation and water high quality enchancment mission that can final till spring 2026. The DNR warns individuals to remain out of the lake mattress, which could look dry, however is tender and will shortly entrap individuals.
What seashores have improved to ‘OK for swimming’?
One seaside, Blue Lake Beach, noticed improved water high quality from week 9 information, posted on July 18, to week 10 and has been faraway from the listing of seashores not really helpful for swimming.
How does the Iowa DNR classify Iowa’s seashores based mostly on their water high quality?
DNR officers classify state park seashores into one among three classes yearly based mostly on their historical past of micro organism outcomes lately:
- Vulnerable: Beaches are thought of susceptible when the geometric imply normal is exceeded in three or extra of the 5 most up-to-date sampling seasons.
- Transitional: The seaside’s geometric imply normal is exceeded in two or fewer sampling seasons of the 5 most up-to-date years of monitoring and was listed as “vulnerable” previously monitoring seasons.
- Less susceptible: The seaside’s geometric imply normal is exceeded in two or fewer sampling seasons of the 5 most up-to-date years of monitoring and was listed as “transitional” or “less vulnerable” in previous monitoring seasons.
Cooper Worth is a service/trending reporter for the Des Moines Register. Reach him at [email protected] or observe him on X @CooperAWorth.
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