US Army Corps of Engineers

Libby Dam & Lake Koocanusa

January 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 11029 460 27 5.30 22.00 22.00 0.00 2415.77 2416.18 2123.39 292.79 3155.40
2 10959 457 27 6.10 22.00 22.00 0.00 2414.93 2415.29 2123.39 291.90 3124.00
3 10847 452 26 5.10 21.79 21.79 0.00 2414.04 2414.43 2123.34 291.09 3090.80
4 10738 447 25 6.20 21.50 21.50 0.00 2413.22 2413.61 2123.31 290.30 3060.50
5 10725 447 25 7.20 21.50 21.50 0.00 2412.45 2412.81 2123.31 289.50 3032.10
6 10682 445 25 6.50 21.50 21.50 0.00 2411.64 2412.01 2123.31 288.70 3002.40
7 10605 442 25 5.70 21.10 21.10 0.00 2410.80 2411.21 2123.30 287.91 2971.80
8 10544 439 26 5.50 21.00 21.00 0.00 2409.95 2410.37 2123.29 287.08 2941.00
9 10476 437 27 6.10 21.00 21.00 0.00 2409.13 2409.52 2123.29 286.23 2911.40
10 10417 434 27 5.00 21.00 21.00 0.00 2408.24 2408.66 2123.28 285.38 2879.60
11 10373 432 25 5.70 21.00 21.00 0.00 2407.38 2407.79 2123.27 284.52 2849.20
12 10363 432 24 5.80 21.00 21.00 0.00 2406.52 2406.93 2123.28 283.65 2819.00
13 10359 432 24 6.10 21.00 21.00 0.00 2405.67 2406.06 2123.29 282.77 2789.40
14 10358 432 25 5.00 21.00 21.00 0.00 2404.75 2405.18 2123.32 281.86 2757.70
15 11440 477 25 6.70 23.27 23.27 0.00 2403.79 2404.30 2123.88 280.42 2724.90
16 12680 528 26 6.30 26.23 26.23 0.00 2402.62 2403.19 2124.53 278.66 2685.30
17 12553 523 26 6.60 26.00 26.00 0.00 2401.47 2401.99 2124.51 277.48 2646.90
18 12476 520 26 5.50 26.00 26.00 0.00 2400.24 2400.81 2124.50 276.31 2606.20
19 12382 516 27 5.00 26.00 26.00 0.00 2398.96 2399.55 2124.49 275.06 2564.50
20 12320 513 27 4.60 26.00 26.00 0.00 2397.64 2398.29 2124.49 273.80 2522.00
21 6.30 26.00 26.00 0.00 2396.41 2397.03 2124.45 272.58 2482.80
22 5.50 26.00 26.00 0.00 2395.12 2395.75 2124.45 271.30 2442.20
23 4.10 26.00 26.00 0.00 2393.72 2394.40 2124.49 269.91 2398.70
24 4.50 26.00 26.00 0.00 2392.33 2392.99 2124.45 268.54 2356.00
25 4.90 26.00 26.00 0.00 2390.95 2391.62 2124.41 267.21 2314.30
26 5.20 25.65 25.65 0.00 2389.59 2390.22 2124.37 265.85 2273.60
27 4.30 16.06 16.06 0.00 2388.80 2389.17 2122.37 266.80 2250.20
28
29
30
31
TOT222326  513         
AVG 11116 463 26 5.59 23.10 23.10 0.00 2403.56 2404.05 2123.77 280.28 2727.85
MAX 12680   7.20 26.23 26.23 0.00 2415.77 2416.18 2124.53 292.79 3155.40
MIN 10358   4.10 16.06 16.06 0.00 2388.80 2389.17 2122.37 265.85 2250.20
BUILDING STRONG®