Example at Upper Salmon
1 Kaf released over 30 days yields a flow of 16.7 cfs.
The power factor at Lower Granite is 36 MW/Kcfs.
The power (rate of energy production) is .60 MW or 600 kilowatts.
Over 30 days (720 hours) this yields 433 megawatt-hours of gross energy.
Assuming the return is in the same month at the same location, the adjustment for return flows yields a net energy gain of 250 MW-hrs (1.0 - 0.42 x 433).