Great Falls

Latest Operating Information
WARNING! Water release schedules can change without notice due to unanticipated weather changes or power system requirements. Large amounts of water could be discharged at any time. Use caution! Obey all posted safety regulations and precautions!  Vital safety information.
Great Falls will be spilling until further notice.

Generation Releases

Caption
Day Time Period Generators
12/6/2019 midnight - midnight 0
12/7/2019 midnight - midnight 0

Observed Data

Caption
Day Time (Central) Reservoir Elevation (behind dam)* Tailwater Elevation (below dam)* Average Hourly Discharge*
12/6/2019 2 PM 794.53 655.00 2,788
12/6/2019 3 PM 794.51 654.98 2,759
12/6/2019 4 PM 794.49 654.94 2,734
12/6/2019 5 PM 794.47 654.91 2,711
12/6/2019 6 PM 794.45 654.87 2,688
12/6/2019 7 PM 794.43 654.84 2,663
12/6/2019 8 PM 794.40 654.82 2,635
12/6/2019 9 PM 794.38 654.78 2,605
12/6/2019 10 PM 794.37 654.76 2,584

Predicted Data

Caption
Day Average Inflow* Midnight Elevation* Average Outflow*
12/6/2019 2,250 794.33 2,655
12/7/2019 1,978 794.30 2,000
12/8/2019 1,702 794.23 1,755

*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.

More Information on Great Falls

Operating Guide

General Overview

Sport Fish Survey Results

 

 

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