CAUTION: Tuesday, November 7th, at Widows Creek Fossil Plant site (River Mile 408), TVA transmission crews will be performing line work from 7 a.m. until work is completed. TVA Police and safety patrol boats will monitor marine channels 13, 16 and 81.

Nickajack

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.

Generation Releases

Caption
Day Time Period Generators
11/18/2017 midnight - midnight 2 or more
11/19/2017 midnight - midnight 2 or more

Observed Data

Caption
Day Time (Eastern) Reservoir Elevation (behind dam)* Tailwater Elevation (below dam)* Average Hourly Discharge*
11/18/2017 7 PM 632.92 597.58 41,952
11/18/2017 8 PM 632.95 597.55 42,009
11/18/2017 9 PM 632.88 597.61 41,977
11/18/2017 10 PM 632.81 597.63 42,010
11/18/2017 11 PM 632.56 597.58 42,051
11/18/2017 midnight 632.54 596.89 35,281
11/19/2017 1 AM 632.46 596.03 21,908
11/19/2017 2 AM 632.51 595.20 11,407
11/19/2017 3 AM 632.52 594.71 9,611

Predicted Data

Caption
Day Average Inflow* Midnight Elevation* Average Outflow*
11/19/2017 35,792 633.53 31,225
11/20/2017 35,717 633.80 34,450
11/21/2017 35,638 633.80 35,610

*Elevations are in feet above sea level. Discharges are in cubic feet per second and are reported at the end of the hour.

Notes:

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.

Reservoir Information

Get the most up-to-date information on the individual reservoirs TVA manages, including observed and predicted elevations, planned generation releases at the dams, reservoir operating guides, ecological health ratings, fish population survey results, recreation facilities and more.

 

 

Lake Info App

Want your lake info to go? Download the TVA Lake Info app, an easy-to-use resource for operating on and around reservoirs and dams in the TVA region. Available for iPhone and Android devices.