Grand Coulee Daily Outflow in Thousands of CFS for Water Year 2021 Day Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep 01 93.2 81.3 105.2 86.3 --- --- --- --- --- --- --- --- 02 82.1 86.6 106.5 106.5 --- --- --- --- --- --- --- --- 03 64.7 88.6 117.2 107.5 --- --- --- --- --- --- --- --- 04 59.5 79.8 114.4 104.7 --- --- --- --- --- --- --- --- 05 62.5 75.9 112.7 100.7 --- --- --- --- --- --- --- --- 06 67.4 88.5 92.9 118.4 --- --- --- --- --- --- --- --- 07 63.8 90.0 97.7 126.9 --- --- --- --- --- --- --- --- 08 48.3 88.8 88.4 131.5 --- --- --- --- --- --- --- --- 09 58.8 103.2 91.7 127.8 --- --- --- --- --- --- --- --- 10 54.4 102.0 115.2 111.4 --- --- --- --- --- --- --- --- 11 51.8 104.2 100.1 115.0 --- --- --- --- --- --- --- --- 12 59.4 111.2 110.6 119.8 --- --- --- --- --- --- --- --- 13 63.4 93.2 96.8 127.2 --- --- --- --- --- --- --- --- 14 47.3 92.2 86.9 131.0 --- --- --- --- --- --- --- --- 15 81.3 83.0 74.4 134.8 --- --- --- --- --- --- --- --- 16 48.6 97.3 73.3 120.9 --- --- --- --- --- --- --- --- 17 38.6 96.2 84.4 108.3 --- --- --- --- --- --- --- --- 18 44.1 99.0 104.6 117.0 --- --- --- --- --- --- --- --- 19 38.5 106.9 98.7 120.4 --- --- --- --- --- --- --- --- 20 49.9 112.1 95.3 122.0 --- --- --- --- --- --- --- --- 21 54.0 113.5 78.2 121.7 --- --- --- --- --- --- --- --- 22 74.7 107.0 75.9 123.0 --- --- --- --- --- --- --- --- 23 84.1 108.4 87.6 125.4 --- --- --- --- --- --- --- --- 24 53.1 109.1 89.3 130.4 --- --- --- --- --- --- --- --- 25 76.6 107.5 86.0 125.0 --- --- --- --- --- --- --- --- 26 106.1 95.2 79.0 137.1 --- --- --- --- --- --- --- --- 27 95.7 103.5 98.7 --- --- --- --- --- --- --- --- --- 28 71.1 92.0 109.9 --- --- --- --- --- --- --- --- --- 29 61.4 99.5 102.8 --- --- --- --- --- --- --- --- 30 73.0 94.4 106.3 --- --- --- --- --- --- --- --- 31 91.2 94.6 --- --- --- --- --- --- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ VOL 4004 5772 5901 6150