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.

Generation Releases

Caption
Day Time Period Generators
9/22/2018 midnight - midnight 0

Observed Data

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Day Time (Central) Reservoir Elevation (behind dam)* Tailwater Elevation (below dam)* Average Hourly Discharge*
9/21/2018 10 PM 798.53 650.56 160
9/21/2018 11 PM 798.55 650.54 160
9/21/2018 midnight 798.56 650.51 160
9/22/2018 1 AM 798.58 650.48 160
9/22/2018 2 AM 798.59 650.44 160
9/22/2018 3 AM 798.60 650.39 160
9/22/2018 4 AM 798.61 650.35 160
9/22/2018 5 AM 798.62 650.32 160
9/22/2018 6 AM 798.63 650.29 160

Predicted Data

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Day Average Inflow* Midnight Elevation* Average Outflow*
9/22/2018 335 798.99 0
9/23/2018 412 799.48 0
9/24/2018 570 799.90 220

*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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