US Army Corps of Engineers

Grand Coulee Dam

August 2018

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feetBanks Lake Pump kcfsBanks Lake Pump MWhBanks Lake Elev
1 48743 2031 113 101.90 86.50 86.40 0.10 1282.70 1282.55 959.34 323.21 3.67 2426 1568.48
2 47117 1963 104 101.10 79.40 79.30 0.10 1283.10 1283.00 958.82 324.18 4.04 2678 1568.15
3 57271 2386 95 105.50 97.00 96.90 0.10 1283.10 1283.28 960.55 322.73 10.47 6981 1567.99
4 59327 2472 92 105.30 100.70 100.60 0.10 1282.90 1283.04 960.89 322.15 14.40 9648 1568.23
5 50168 2090 97 105.40 85.10 85.00 0.10 1283.00 1283.02 959.17 323.85 14.40 9645 1568.65
6 55695 2321 104 105.70 94.90 94.80 0.10 1283.20 1283.20 960.13 323.07 4.84 3240 1568.76
7 67319 2805 104 114.20 115.30 115.20 0.10 1283.00 1283.24 962.17 321.07 4.88 3265 1568.72
8 69961 2915 107 109.10 119.80 119.70 0.10 1282.60 1282.85 962.99 319.86 4.87 3256 1568.06
9 70124 2922 112 113.20 120.10 120.00 0.10 1282.30 1282.54 963.05 319.49 4.85 3244 1567.71
10 59896 2496 112 102.90 102.00 101.90 0.10 1282.20 1282.30 961.22 321.08 4.82 3222 1567.45
11 46654 1944 96 93.60 79.20 79.20 0.00 1282.20 1282.29 959.00 323.29 14.40 9648 1567.87
12 51702 2154 84 104.40 88.10 88.00 0.10 1282.30 1282.33 959.65 322.68 14.40 9641 1568.20
13 54803 2283 94 98.60 93.70 93.60 0.10 1282.20 1282.37 959.63 322.74 4.89 3273 1568.20
14 53986 2249 96 99.60 93.10 93.00 0.10 1282.30 1282.45 959.68 322.77 4.52 3035 1567.97
15 57541 2398 99 104.70 98.00 97.90 0.10 1282.40 1282.44 960.86 321.58 4.23 2834 1567.76
16 56020 2334 100 102.00 95.70 95.60 0.10 1282.40 1282.52 960.73 321.79 4.28 2862 1567.52
17 51356 2140 98 101.80 87.80 87.70 0.10 1282.70 1282.67 960.39 322.28 4.27 2848 1567.29
18 58031 2418 86 103.20 99.00 98.90 0.10 1282.70 1282.83 960.54 322.29 4.26 2844 1567.08
19 55019 2292 83 104.10 94.00 93.90 0.10 1282.80 1282.92 960.31 322.61 4.24 2841 1566.91
20 58895 2454 91 108.40 100.30 100.30 0.10 1282.90 1282.87 961.18 321.69 4.20 2812 1566.75
21 66399 2767 95 100.40 113.40 113.30 0.10 1282.50 1282.73 961.86 320.87 4.55 3036 1566.58
22 65513 2730 97 104.60 113.30 113.20 0.10 1282.10 1282.28 962.28 320.00 5.05 3343 1566.52
23 64019 2667 90 107.10 110.60 110.50 0.10 1281.90 1282.02 961.50 320.52 4.34 2837 1566.37
24 64169 2674 87 103.30 110.80 110.70 0.10 1281.60 1281.75 961.68 320.07 4.16 2721 1566.24
25 53166 2215 72 83.20 91.10 91.00 0.10 1281.30 1281.38 959.81 321.57 3.75 2443 1566.00
26 43107 1796 75 82.60 75.00 74.90 0.10 1281.40 1281.37 958.24 323.13 3.74 2436 1565.81
27 65110 2713 86 88.10 111.80 111.70 0.10 1280.70 1281.03 961.78 319.25 3.38 2199 1565.65
28 58723 2447 84 86.80 103.50 103.40 0.10 1280.20 1280.50 960.96 319.54 2.52 1636 1565.39
29 51885 2162 86 74.40 88.60 88.50 0.10 1279.70 1280.11 959.85 320.26 3.06 1991 1565.18
30 52578 2191 89 82.80 90.00 89.90 0.10 1279.50 1279.66 960.20 319.46 4.23 2771 1565.04
31 49863 2078 87 84.30 85.80 85.70 0.10 1279.30 1279.44 959.31 320.13 4.21 2784 1564.90
TOT1764160  2915           
AVG 56908 2371 94 99.43 97.54 97.44 0.10 1282.04 1282.16 960.57 321.59 5.74 3821 1567.14
MAX 70124   114.20 120.10 120.00 0.10 1283.20 1283.28 963.05 324.18 14.40 9648 1568.76
MIN 43107   74.40 75.00 74.90 0.00 1279.30 1279.44 958.24 319.25 2.52 1636 1564.90