Algae Treatment at Milavec Lake

Milavec Lake is Open 

Good news, Frederick! The algae treatment in Milavec Lake is complete, and the lake is once again open to boating (non-motorized), fishing, and wading. Thank you to our residents alerting the Town of a potential hazard and to the Public Works team for taking immediate action! This is a great example of how we all work together to make sure the community is safe, protected, and open to all.

On Monday, July 19, 2021 the Town of Frederick found blue-green algae in Milavec Lake. The Public Works Department immediately contacted a company to address our concerns. We took the recommendation to prohibit all activities related to water contact: fishing, boating, wading, and animals in or near the water. Taking these precautions is the safest course of action as we conducted tests and applied necessary treatment. 

Frequently Asked Questions

What is Blue-Green Algae? 
Blue-green algae, also known as cyanobacteria, can multiply during the summer. The blooms thrive in slow-moving water bodies, such as lakes and ponds. Some cyanobacteria species can produce cyanotoxins during algal blooms, which can be harmful at elevated levels if ingested by dogs, wildlife and humans, or during wading and other recreational contact with water. The toxicity of a cyanobacteria bloom is difficult to predict because a single species can have toxic and non-toxic strains, and toxic strains do not always produce toxins. 

Why did this occur? 
This algae is common in shallow, warm water and water along shorelines that doesn’t have a lot of movement. We have all three things going on, as do most lakes. Blue-green algae is common in many lakes in the area throughout our region, and we are not alone in algae occurrence. Sometimes blue-green algae goes away without treatment at all.

When did treatment begin?
Treatment began Wednesday, July 21. After initial treatment was completed, the affected area was retreated in 5-7 days, and then again 5-7 days after the second treatment. The treatments will occur only in the areas will the algae is present. 

Why didn't we testing the water first? 
It is evident that this algae is blue-green algae, and no matter what stage the algae is in, the treatment would be the same. Testing would prolong the ability to treat this immediately.

Will treatment cause a fish kill?
The treatment itself does not kill the fish, but there could be some fish kill from the toxins in the blue-green algae. Since we are treating such a small part of the lake there should not be a large amount of fish kill.

What is the treatment?
Captain XTR is the product name for the treatment used to mitigate algae. Learn more about Captain XTR Algaecide.