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See how Iowa DNR conducts seashore monitoring exams at Iowa’s lakes
The Iowa Department of Natural Resources conducts weekly exams to observe seashore water high quality at 39 state-owned seashores.
Beaches proceed to get added to the not beneficial for swimming listing, in response to the newest Iowa Department of Natural Resources seashore monitoring report launched Friday, Aug. 8.
Sixteen 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 screens water high quality at 39 state-owned swimming seashores and supplies weekly updates to the public by way of its web site and a hotline at 515-725-3434. Sampling begins the week earlier than Memorial Day and continues by way of Labor Day.
What Iowa DNR seashores aren’t beneficial for swimming?
Backbone Beach
- Beach classification: Vulnerable
- Last check date: Aug. 6
- Test outcomes: Exceeded single-sample restrict for E. coli
Beeds Lake Beach
- Beach classification: Vulnerable
- Last check date: Aug. 6
- Test outcomes: Exceeded single-sample restrict for E. coli
Bobwhite State Park
- Beach classification: NA
- Last check date: Aug. 5
- Test outcomes: Exceeded single-sample restrict for E. coli
Brushy Creek Beach
- Beach classification: Less susceptible
- Last check date: Aug. 5
- Test outcomes: Exceeded single-sample restrict for E. coli
Crandalls Beach
- Beach classification: Less susceptible
- Last check date: Aug. 6
- Test outcomes: Exceeded single-sample restrict for E. coli
Emerson Bay Beach
- Beach classification: Vulnerable
- Last check date: Aug. 6
- Test outcomes: Exceeded single-sample restrict for E. coli
Lake Ahquabi Beach
- Beach classification: Less susceptible
- Last check date: Aug. 6
- Test outcomes: Exceeded single-sample restrict for E. coli
Lake Darling Beach
- Beach classification: Vulnerable
- Last check date: Aug. 6
- Test outcomes: Exceeded single-sample restrict for E. coli and algal toxin ranges
Lake Manawa Beach
- Beach classification: Vulnerable
- Last check date: Aug. 5
- Test outcomes: Exceeded single-sample restrict for E. coli
Lake of Three Fires Beach
- Beach classification: Less susceptible
- Last check date: Aug. 4
- Test outcomes: Exceeded single-sample restrict for E. coli
Nine Eagles Beach
- Beach classification: Vulnerable
- Last check date: Aug. 5
- Test outcomes: Exceeded single-sample restrict for E. coli
Pine Lake South Beach
- Beach classification: Vulnerable
- Last check date: Aug. 6
- Test outcomes: Exceeded single-sample restrict for E. coli
Pleasant Creek Beach
- Beach classification: Less susceptible
- Last check date: Aug. 6
- Test outcomes: Exceeded single-sample restrict for E. coli
Prairie Rose Beach
- Beach classification: Vulnerable
- Last check date: Aug. 5
- Test outcomes: Exceeded single-sample restrict for E. coli
Union Grove Beach
- Beach classification: Vulnerable
- Last check date: Aug. 6
- Test outcomes: Exceeded single-sample restrict for E. coli
Viking Lake Beach
- Beach classification: Less susceptible
- Last check date: Aug. 5
- Test outcomes: Exceeded algal toxin ranges
What Des Moines space seashores aren’t beneficial for swimming?
- Blue Heron Lake Beach at Raccoon River Park: Testing on July 31 discovered E. coli ranges above the appropriate vary, in response to the West Des Moines Parks and Recreation Department.
- Easter Lake: As of Aug. 7, Polk County Conservation has decided that the degrees of E. coli within the water exceed the appropriate vary, and swimming isn’t beneficial.
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 venture that may final till spring 2026. The DNR warns folks to remain out of the lake mattress, which could look dry, however is gentle and will rapidly entrap folks.
What seashores have improved to ‘OK for swimming’?
McInstosh Woods Beach is the one lake that noticed enhancements in water high quality from week 11 knowledge, posted on Aug. 1, to week 12. It has since been faraway from the listing of seashores not beneficial 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 considered one of three classes yearly based mostly on their historical past of micro organism outcomes in recent times:
Less susceptible: The seashore’s geometric imply commonplace 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.
Vulnerable: Beaches are thought of susceptible when the geometric imply commonplace is exceeded in three or extra of the 5 most up-to-date sampling seasons.
Transitional: The seashore’s geometric imply commonplace is exceeded in two or fewer sampling seasons of the 5 most up-to-date years of monitoring and was listed as “vulnerable” up to now monitoring seasons.
Victoria Reyna-Rodriguez is a normal project reporter for the Register. Reach her at [email protected] or comply with her on Twitter @VictoriaReynaR.
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