Marina
Blue-green algae outbreaks are once again affecting Kansas lakes, triggering public health warnings across the state.
The Kansas Department of Health and Environment (KDHE) and the Kansas Department of Wildlife and Parks (KDWP) have released updated advisories, urging residents and visitors to avoid contact with specific lakes showing signs of harmful algal blooms (HABs).
These algae blooms are not only unpleasant to look at—they pose serious health risks to both humans and animals, particularly during the warmer months.
Here’s what you need to know, including a detailed table of affected lakes, the current advisory levels, and important safety measures to protect yourself and your pets.
What is Blue-Green Algae?
Blue-green algae, technically a type of cyanobacteria, can quickly multiply under warm, stagnant water conditions—especially in nutrient-rich environments. These blooms often look like spilled green paint, foam, or scum and may appear blue, green, red, or brown.
The real danger lies in the toxins they release, which can be harmful or even fatal when inhaled, ingested, or contacted through the skin.
Health Risks of Blue-Green Algae Exposure
Exposure to blue-green algae can result in a variety of adverse health effects, including:
- Skin rashes
- Nausea, vomiting, and diarrhea
- Eye and throat irritation
- Fever
- Respiratory issues
For pets and livestock, the risks are more severe—ingesting contaminated water or eating dried algae can lead to seizures, liver failure, or death.
Current Health Advisories in Kansas (As of June 2025)
Below is the latest list of Kansas lakes under active advisories due to blue-green algae.
| Advisory Level | Lake Name | County |
|---|---|---|
| Warning – Avoid Contact | Atchison City Lake #9 | Atchison County |
| Atchison State Fishing Lake | Atchison County | |
| Frazier Lake | Grant County | |
| Gathering Pond | Geary County | |
| Jeffrey Energy Center Auxiliary Lake | Pottawatomie County | |
| Jeffrey Energy Make-up Lake | Pottawatomie County | |
| Watch – Algae May Be Present | Clinton Lake | Douglas County |
| Lake Parsons | Neosho County | |
| Marion Reservoir | Marion County | |
| Tuttle Creek Lake Zone A | Pottawatomie/Riley Co. | |
| Warnock Lake | Atchison County | |
| Advisory Lifted | Augusta Santa Fe Lake | Butler County |
Advisory Levels Explained
- Watch Level: Blue-green algae may be present. Caution is advised.
- Warning Level: Confirmed harmful algae present. Avoid all contact with the water.
- Hazard Level (Not Active Currently): Most severe; may involve lake closures.
Important Safety Guidelines
To reduce health risks, follow these KDHE-approved safety tips:
- Do not swim, wade, or ski in areas with visible algae or scum.
- Keep pets and livestock away from affected lakes and shorelines.
- Rinse skin or animal fur thoroughly with clean water after contact.
- Do not drink untreated lake or pond water.
- If consuming fish, eat only fillets and rinse them thoroughly with clean water.
Public Reporting and Updates
If you suspect a blue-green algae bloom, report it to KDHE at kdhe.ks.gov. The site also features an interactive map and regular updates on active advisories throughout the state.
With the rise of blue-green algae blooms in Kansas lakes this summer, health officials urge caution. Whether you’re swimming, fishing, or walking your dog, stay alert and informed. Follow safety guidelines, avoid contaminated water, and check advisory updates from KDHE to ensure your health and safety.