The 2021 open water season on the TFF will be remembered for close to average water levels up to mid-July, but starting in mid-July and continuing to late-October, precipitation over the TFF watershed was between 25% to 50% of normal, which had a significant impact on TFF water levels.
Complete “ice-out” took place on April 6, 2021 and the spring refill target of 1571.50’ was achieved 2 days later on April 8th. Water levels were about the same as last year through the end June, and were within 1-2 inches of our desired target level at that time.
The significant lack of precipitation starting in July was evident as water levels started to decline against both last year and target levels. The low water point for the summer took place on September 20th at -3.38 feet from full pool and water level had recovered to -2.65 feet by November 1st.
Discharge from the TFF Dam was moderate throughout the season, and was reduced to just above the minimum of 300 cubic feet per second (cfs) early September. Discharge remained in the low 300cfs range through the end of October.
The Water Level Committee has initiated discussions with the Wisconsin DNR concerning water levels this summer and hopes to have productive discussions over the next few months. In the meantime, we ask that all Association members pray for strong fall rains and a good snow pack over the winter.