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
11/14/2018 midnight - midnight 1
11/15/2018 midnight - midnight 1

Observed Data

Caption
Day Time (Central) Reservoir Elevation (behind dam)* Tailwater Elevation (below dam)* Average Hourly Discharge*
11/14/2018 7 AM 797.01 659.08 7,257
11/14/2018 8 AM 796.99 659.07 7,240
11/14/2018 9 AM 796.97 659.06 7,214
11/14/2018 10 AM 796.95 659.04 7,189
11/14/2018 11 AM 796.92 659.01 7,153
11/14/2018 noon 796.89 658.99 7,118
11/14/2018 1 PM 796.87 658.93 7,085
11/14/2018 2 PM 796.83 658.92 7,047
11/14/2018 3 PM 796.80 658.90 7,006

Predicted Data

Caption
Day Average Inflow* Midnight Elevation* Average Outflow*
11/14/2018 6,802 796.80 6,947
11/15/2018 12,025 799.72 9,635
11/16/2018 11,133 798.77 11,925

*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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