Harmful Algal Bloom Confirmed on Caneyville Reservoir
A recreational public health advisory has been issued for Caneyville Reservoir near Caneyville Kentucky. Observations and a sample collected on September 9, 2026 indicated the presence of a harmful algal bloom (HAB) in this area. This reservoir is not utilized as a public drinking water source.
HABs occur when there are excess nutrients (phosphorus and nitrogen), sunny conditions, warm temperatures, and low-flow or low-water conditions. They may appear as slicks of opaque, bright-green paint, but closer inspection often reveals a grainy, sawdust-like appearance.
Recreational activities that result in physical contact with water such as swimming and wading are not recommended in areas impacted by HABs. Recommended precautions to avoid exposure to HABs can be found here.
If you have contact with water containing blue-green algae, rinse with clean, fresh water. In some cases, a rash will appear after prolonged exposure. Other symptoms may include stomach pain, headache, coughing, watery eyes, nose irritation or sore throat. Children and people who are prone to respiratory allergies or asthma may be particularly sensitive to HABs. If symptoms persist, contact a healthcare provider. Additional information about the health effects of exposure to HABs is available here.
If you suspect that you have seen a HAB, please report the bloom to the Kentucky Division of Water by calling 502-564-3410 or emailing water@ky.gov. After hours and on weekends, you may contact the 24-hour hotline at 502-564-2380 or 1-800-928-2380. For additional information about HABs in Kentucky, please visit the Division of Water’s HAB webpage here.
To see all current HAB advisories in Kentucky, please access the Division of Water’s HAB Viewer at http://watermaps.ky.gov/HABs.
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