Long term Dissolved oxygen monitoring will take place on four lakes (Upper Twin, Lower Twin, Tiger Cat Lake and Placid) of the Tiger Cat Flowage for the Citizen Lake Monitoring Program. The project includes the following goals: 1) More efficient and less time consuming for volunteer; 2) Allow for accurate testing of DO at more frequent intervals to develop a more comprehensive profile; 3) Determine if lakes stratify; 4) Monitor for winter DO levels (fish kill potential); 5) Share the meter for use in different lakes; 6) Develop a benchmark of Tiger Cat Flowage water quality.