Harmful Algal Blooms

Harmful algal blooms (HABs) monitoring is concurrent with the water recreation season, April 1 through October 31. The public is encouraged to stay informed year-round because exposure through contact or ingestion can cause illness for animals and humans. Blooms are unpredictable. They can develop rapidly and may move across a water body due to wind or water current, so lake visitors must use their best judgment.

Current Advisories

The three advisory levels are Watch, Warning, and Hazard. Current advisories are listed in the table or view the current lake advisories map. To hear current advisories, call the HAB hotline at 855-HAB-LAKE or 855-422-5253.

Lake County Level
Colwich City Lake Sedgwick Warning
Crystal Lake Anderson County Warning
Ford County Lake Ford Warning
Garnett Lake (north) Anderson Warning
Gathering Pond Geary Watch
Jerry Ivey Pond Saline Warning
Lake Scott State Park Scott Warning
Lake Shawnee Shawnee Watch
Marion Reservoir Marion Warning
Melvern Lake Osage Watch
Milford Lake Zone A Geary & Dickinson Watch
Milford Lake Zone B Geary Watch
Milford Lake Zone C Geary & Clay Warning
Keith Sebelius (Norton) Reservoir Norton Warning
Parsons Lake Neosho Warning
Pomona Lake Osage Watch
Riggs Park Lake Sedgwick Warning

Last Updated on: 7/1/2022

Recommendations

Click through the tabs to learn what to do during a Harmful Algal Bloom advisory.

  1. Watch
  2. Warning
  3. Hazard

Watch

A harmful algal bloom is possible and may be present

  • Signage should be posted at all public access locations.
  • Water may be unsafe for humans and animals.
  • Avoid areas of algae accumulation.
  • Do not let people/pets eat dried algae or drink contaminated water.
  • Swimming, wading, skiing, and jet skiing are discouraged near-visible blooms.
  • Boating and fishing are safe; however, inhalation of the spray may affect some individuals.
  • Avoid direct contact with water, and wash with clean water after any contact.
  • Clean fish well with potable water and eat fillet portion only.
  1. Use Caution
  2. General Information

For Animals & Humans

Exposure to HABs, whether through contact or ingestion, can cause illness and even death in animals and humans. Do not allow livestock, pets, or working animals such as hunting dogs to drink from HAB-affected waters, eat dried scum on shorelines, or lick their fur after exposure.

Zoned Lakes

Some lakes have more than one management area, or "zone." Click the images to view or download and share the full-sized zone maps for the following lakes:

Milford Lake Zones (PDF)

Milford Lake Zones

Perry Lake Zones (PDF)

Perry Lake Zones

Tuttle Creek Zones (PDF)

Tuttle Creek Zones