Lake Depth
The Lake Tye water level fluctuates by approximately 3 feet seasonally. A bathymetric survey was done on the south half of the lake in 2012. At that time, the lake at its deepest point was approximately 29 feet. Certified city staff consistently monitors water levels to ensure the proper functioning and environmental health. The lake is approximately 40 acres in size. If you have any further questions or concerns, please visit Monroe Listens or call 360-794-6100 during normal business hours.
Water Quality Results
Fecal coliform bacteria are commonly found in streams and lakes. These bacteria are used as an indicator to help determine whether water may be contaminated by animal or human waste and could pose a health risk.
Low levels of fecal coliform are normal. However, when levels rise above 100 CFU per 100 milliliters of water, it may mean that other harmful germs could also be present. If testing at Lake Tye shows levels above 200 CFU per 100 milliliters, the City will notify the public.
If results exceed 200 CFU, the City will collect additional samples to decide whether further action is needed.
Heavy rain, especially the first rain after a dry period, can cause fecal coliform levels to increase. This happens when rain washes animal waste from streets, yards, and fields into nearby streams, lakes, and rivers.