Watts Bar Lake
Latest Operating Information
Please note! Water release schedules often change without notice due to unanticipated changes in weather conditions and power system requirements.
Use caution near dams. A large amount of water may be discharged without warning at any time. Your safety depends on obeying all posted safety regulations and warnings. Learn more.
Watts Bar will be spilling until further notice.
|12/19/2011||6am – midnight||4 or more|
|12/20/2011||midnight – 1am||4 or more|
*Elevations are in feet above sea level. Discharges are in cubic feet
per second and are reported at the end of the hour.
What is an operating guide?
TVA uses operating guides for each reservoir to make decisions about moving water through its dams. These guides are based on many decades of operating experience. They are built around the idea of allowing seasonal variations in the use of flood storage space.
Operating guides take into consideration all the features that influence a reservoir’s ability to store and release water—the size and shape of the surrounding watershed, the reservoir’s surface area, and the average rainfall and runoff—as well as historical demands for water use and flood storage space at different times of the year.
|Day||Average Inflow*||Midnight Elevation*||Average Outflow*|
*Elevations are in feet above sea level. Flows are in cubic feet per second.
Water release schedules are updated periodically throughout the day. Next-day release schedules are usually available by 6 p.m. of the current day.
Observed water levels also are updated periodically throughout the day. Predicted water levels are updated at least once a day, by 1 p.m. Eastern time, and may be updated more frequently when conditions warrant.