Chief Joseph Daily Outflow in Thousands of CFS for Water Year 2026 Day Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep 01 53.3 77.4 93.2 135.8 108.6 118.0 108.1 160.5 159.1 --- --- --- 02 62.9 82.5 78.4 127.4 126.8 103.3 109.3 145.9 179.8 --- --- --- 03 49.2 97.6 92.7 122.2 123.5 117.3 107.8 131.2 178.2 --- --- --- 04 43.2 95.7 106.5 101.0 104.2 115.2 109.0 135.9 163.8 --- --- --- 05 47.7 81.9 119.9 131.7 111.9 131.2 107.8 149.0 156.2 --- --- --- 06 73.2 70.6 99.3 151.7 122.5 129.2 102.4 90.6 155.5 --- --- --- 07 67.3 65.7 99.7 149.2 103.3 105.8 87.0 97.1 151.4 --- --- --- 08 72.4 81.3 98.2 138.8 115.4 98.5 98.1 113.0 155.0 --- --- --- 09 74.9 72.3 70.3 145.4 128.9 126.6 98.3 122.6 129.9 --- --- --- 10 61.6 72.4 61.6 136.4 126.1 137.1 117.1 118.2 105.5 --- --- --- 11 48.7 78.6 60.1 141.0 121.0 125.9 118.0 122.0 119.1 --- --- --- 12 59.6 82.1 63.7 145.2 123.5 122.3 127.2 139.6 140.4 --- --- --- 13 69.4 74.6 70.4 140.2 122.9 144.1 111.1 119.1 144.0 --- --- --- 14 81.1 74.4 88.8 149.0 110.6 110.1 111.0 126.4 156.5 --- --- --- 15 70.2 72.1 91.9 149.2 121.9 120.7 108.6 115.3 155.6 --- --- --- 16 71.0 80.4 100.0 144.5 139.5 110.8 104.4 122.5 126.1 --- --- --- 17 49.4 89.2 104.9 147.9 143.4 109.2 114.9 109.2 --- --- --- --- 18 61.1 106.9 105.3 149.0 128.0 102.0 108.1 129.6 --- --- --- --- 19 48.3 106.9 89.7 148.7 139.5 115.3 131.5 153.3 --- --- --- --- 20 63.9 97.0 114.4 145.9 152.5 124.5 135.2 134.1 --- --- --- --- 21 71.9 97.2 119.8 141.0 147.8 115.5 116.1 122.4 --- --- --- --- 22 70.4 82.4 120.4 141.6 149.1 123.1 120.5 131.7 --- --- --- --- 23 62.8 74.3 137.8 137.4 147.9 142.3 119.8 111.7 --- --- --- --- 24 80.0 88.9 129.5 144.3 149.1 118.2 123.7 98.0 --- --- --- --- 25 59.4 103.1 113.0 147.0 137.2 129.1 130.2 116.1 --- --- --- --- 26 52.9 81.8 122.8 138.5 125.3 133.6 119.7 118.8 --- --- --- --- 27 64.7 64.8 115.1 133.0 119.1 146.0 116.0 113.2 --- --- --- --- 28 64.7 73.2 134.8 134.0 132.4 124.3 127.2 143.6 --- --- --- --- 29 53.4 94.6 120.4 126.2 116.1 149.9 121.3 --- --- --- --- 30 73.0 93.7 130.6 139.2 125.3 124.1 105.3 --- --- --- --- 31 83.5 134.5 114.6 134.0 124.7 --- --- --- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ VOL 3898 4986 6323 8523 7105 7487 6867 7620 4713