US Army Corps of Engineers

Grand Coulee Dam

September 2019

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 37822 1576 96 67.90 66.30 66.20 0.10 1277.20 1277.36 958.02 319.34 15.93 10733 1565.84
2 39992 1666 96 74.10 69.50 69.40 0.10 1277.20 1277.17 958.02 319.15 4.59 3083 1565.80
3 35984 1499 96 76.50 60.30 60.20 0.10 1277.50 1277.36 956.86 320.50 3.35 2229 1565.45
4 39597 1650 96 76.70 67.50 67.40 0.10 1277.60 1277.50 957.10 320.40 8.03 5426 1565.40
5 35991 1500 96 73.20 61.20 61.10 0.10 1277.70 1277.65 956.68 320.97 7.43 4987 1565.35
6 39600 1650 96 75.00 68.00 67.90 0.10 1277.70 1277.67 957.39 320.28 7.42 4978 1565.46
7 22772 949 96 70.50 40.20 40.10 0.10 1278.20 1277.85 955.18 322.67 11.07 7527 1565.85
8 25162 1048 96 63.20 44.30 44.30 0.00 1278.30 1278.25 954.89 323.36 15.53 10427 1566.57
9 36139 1506 96 73.70 63.00 62.90 0.10 1278.40 1278.34 957.19 321.15 5.40 3637 1566.64
10 26660 1111 96 67.90 46.90 46.80 0.10 1278.80 1278.58 955.57 323.01 5.42 3655 1566.70
11 28391 1183 96 78.30 52.60 52.50 0.10 1279.40 1279.01 956.25 322.76 5.54 3717 1566.73
12 33367 1390 96 82.90 67.50 67.40 0.10 1279.60 1279.47 956.48 322.99 5.51 3723 1566.78
13 38168 1590 96 80.70 69.80 69.70 0.10 1279.60 1279.65 957.31 322.34 10.11 6721 1567.09
14 33604 1400 96 61.30 58.60 58.50 0.10 1279.30 1279.43 957.06 322.37 15.96 10739 1567.43
15 32107 1338 96 54.60 56.20 56.10 0.10 1278.80 1279.06 956.66 322.40 15.90 10730 1568.80
16 27405 1142 96 58.60 47.40 47.30 0.10 1279.00 1278.79 955.12 323.67 4.79 3327 1568.80
17 22035 918 96 54.50 40.30 40.20 0.10 1279.20 1279.14 955.54 323.60 5.81 3853 1568.99
18 23921 997 96 54.60 40.60 40.50 0.10 1279.50 1279.24 955.39 323.85 2.50 1659 1568.86
19 24726 1030 96 56.90 42.30 42.20 0.10 1279.80 1279.59 955.50 324.09 2.48 1647 1568.80
20 25814 1076 96 64.20 43.70 43.60 0.10 1280.30 1279.98 955.84 324.14 2.49 1654 1568.69
21 22893 954 96 57.90 39.20 39.10 0.10 1280.70 1280.47 955.53 324.94 2.52 1661 1568.60
22 25064 1044 96 58.40 45.10 45.00 0.10 1280.90 1280.73 955.28 325.45 7.50 4944 1568.91
23 20741 864 96 54.80 36.40 36.30 0.10 1281.30 1281.00 954.39 326.61 2.50 1650 1568.81
24 28239 1177 96 61.50 51.20 51.10 0.10 1281.50 1281.31 955.82 325.49 2.50 1647 1568.68
25 33149 1381 96 62.80 61.00 60.90 0.10 1281.50 1281.44 956.70 324.74 2.61 1712 1568.65
26 24246 1010 96 65.20 47.20 47.10 0.10 1281.70 1281.56 954.91 326.65 9.50 6184 1568.93
27 21153 881 96 64.60 36.40 36.30 0.10 1282.10 1281.87 955.39 326.48 9.19 5985 1569.34
28 26604 1108 96 60.10 46.20 46.10 0.10 1282.50 1282.32 955.44 326.88 3.05 1987 1569.26
29 29326 1222 96 52.20 49.60 49.50 0.10 1282.40 1282.43 956.13 326.30 2.21 1441 1569.20
30 33907 1413 96 56.30 57.40 57.30 0.10 1282.40 1282.32 956.11 326.21 1.28 836 1569.03
TOT894579  2880           
AVG 29819 1242 96 65.30 52.53 52.43 0.10 1279.67 1279.55 956.12 323.43 6.60 4417 1567.65
MAX 39992   82.90 69.80 69.70 0.10 1282.50 1282.43 958.02 326.88 15.96 10739 1569.34
MIN 20741   52.20 36.40 36.30 0.00 1277.20 1277.17 954.39 319.15 1.28 836 1565.35