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Wild Celery is releasing early this year from the bottom of the lake to repopulate to different areas of the lake. If you look, some of the plants still have their roots attached. The released plants always end up on the wind driven side of the lake. The early release is due to the low lake level and above average water temperatures which is caused by the lower water level. Typically, Wild Celery will release each year toward the end of August.
Delavan Lake Sanitary's portion of the construction activities is complete.
It's very common during the spring and early summer to receive phone calls from our Delavan Lake residents alerting us that they have seen a big fish die off. Very often these spring die off events are the result of a Columnaris bacterial infection. Columnaris bacteria thrives in warm temperatures (65 to 70F) and reduced water quality from runoff events which also cause stress in fish. At the same time, the warming temperatures and increase in spawning hormones also cause stress in fish.
The Delavan Lake Sanitary District intends to apply for permits from the Wisconsin Department of Natural Resources to treat approximately 165 acres of Delavan Lake with aquatic pesticides to control algae and/or aquatic plants. The proposed treatments would occur between April 15 and November 15, 2023.
New mesh has been installed on harvester #81. The new mesh is designed to do a better job picking up algae and duckweed. Please go to the Delavan Lake Sanitary Facebook page to watch the video of the harvester in action.
Below is a link for more information on control and removal of this invasive species.
Due to the hot weather this week and calm winds today, areas of the lake are experiencing excessive filamentous green algae and blue-green algae outbreaks. People should avoid these areas when swimming and boating. Small children and dogs should be supervised to ensure they don't risk possible ingestion. Please see the Town of Delavan website for additional information.