US Army Corps of Engineers

Libby Dam & Lake Koocanusa

April 2026

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feetMidnight Storage kaf
1 8916 371 23 10.41 20.00 20.00 0.00 2381.14 2381.46 2123.08 258.38 2028.30
2 8888 370 22 9.17 20.00 20.00 0.00 2380.38 2380.75 2123.09 257.66 2006.80
3 8854 369 23 10.06 20.00 20.00 0.00 2379.68 2380.02 2123.09 256.93 1987.10
4 8824 368 22 9.25 20.00 20.00 0.00 2378.92 2379.28 2123.09 256.19 1965.80
5 8774 366 21 9.30 20.00 20.00 0.00 2378.16 2378.53 2123.08 255.45 1944.50
6 8714 363 20 8.37 19.73 19.73 0.00 2377.35 2377.76 2123.06 254.70 1922.00
7 8654 361 18 10.00 19.50 19.50 0.00 2376.67 2376.99 2123.05 253.94 1903.10
8 8633 360 20 9.89 19.50 19.50 0.00 2375.98 2376.30 2123.06 253.24 1884.10
9 8569 357 20 10.21 19.50 19.50 0.00 2375.31 2375.62 2123.03 252.59 1865.60
10 8527 355 19 10.65 19.50 19.50 0.00 2374.67 2374.98 2123.02 251.96 1848.10
11 8489 354 18 10.96 19.50 19.50 0.00 2374.05 2374.36 2123.02 251.34 1831.10
12 8462 353 18 11.81 19.50 19.50 0.00 2373.49 2373.78 2123.02 250.76 1815.90
13 8434 351 18 12.24 19.50 19.50 0.00 2372.96 2373.22 2123.03 250.19 1801.50
14 8399 350 19 13.76 19.50 19.50 0.00 2372.54 2372.70 2123.03 249.67 1790.10
15 8377 349 20 14.87 19.50 19.50 0.00 2372.20 2372.37 2123.02 249.35 1780.90
16 8353 348 22 15.42 19.50 19.50 0.00 2371.90 2372.07 2123.01 249.06 1772.80
17 8351 348 22 13.39 19.50 19.50 0.00 2371.45 2371.69 2123.02 248.67 1760.70
18 8312 346 22 13.81 19.50 19.50 0.00 2371.03 2371.27 2123.01 248.26 1749.40
19 8306 346 20 12.34 19.50 19.50 0.00 2370.50 2370.77 2123.02 247.75 1735.20
20 8260 344 17 12.23 19.50 19.50 0.00 2369.96 2370.22 2123.01 247.21 1720.80
21 8191 341 15 13.59 19.50 19.50 0.00 2369.52 2369.73 2122.97 246.76 1709.00
22 8131 339 18 17.63 19.50 19.50 0.00 2369.38 2369.38 2122.96 246.42 1705.30
23 8138 339 20 23.79 19.50 19.50 0.00 2369.70 2369.53 2122.96 246.57 1713.80
24 8180 341 21 25.82 19.50 19.50 0.00 2370.17 2369.97 2122.98 246.99 1726.40
25 8238 343 20 23.41 19.50 19.50 0.00 2370.46 2370.35 2123.01 247.34 1734.10
26 8247 344 21 20.71 19.50 19.50 0.00 2370.55 2370.52 2123.01 247.51 1736.50
27 8224 343 21 18.42 19.50 19.50 0.00 2370.47 2370.51 2123.00 247.51 1734.40
28 8236 343 19 17.34 19.50 19.50 0.00 2370.31 2370.38 2123.00 247.38 1730.10
29 8183 341 19 15.15 19.46 19.46 0.00 2369.99 2370.15 2122.97 247.18 1721.60
30 5461 228 16 14.46 12.04 12.04 0.00 2369.88 2369.79 2121.16 248.63 1718.60
TOT250324  595         
AVG 8344 348 20 13.95 19.34 19.34 0.00 2373.29 2373.48 2122.96 250.52 1811.45
MAX 8916   25.82 20.00 20.00 0.00 2381.14 2381.46 2123.09 258.38 2028.30
MIN 5461   8.37 12.04 12.04 0.00 2369.38 2369.38 2121.16 246.42 1705.30
BUILDING STRONG®