Grand Coulee Daily Inflow in Thousands of CFS for Water Year 2026 Day Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep 01 73.0 71.2 --- --- --- --- --- --- --- --- --- --- 02 69.5 66.4 --- --- --- --- --- --- --- --- --- --- 03 71.2 79.9 --- --- --- --- --- --- --- --- --- --- 04 61.9 77.6 --- --- --- --- --- --- --- --- --- --- 05 66.8 --- --- --- --- --- --- --- --- --- --- --- 06 65.2 --- --- --- --- --- --- --- --- --- --- --- 07 66.5 --- --- --- --- --- --- --- --- --- --- --- 08 65.9 --- --- --- --- --- --- --- --- --- --- --- 09 68.3 --- --- --- --- --- --- --- --- --- --- --- 10 67.1 --- --- --- --- --- --- --- --- --- --- --- 11 62.1 --- --- --- --- --- --- --- --- --- --- --- 12 76.4 --- --- --- --- --- --- --- --- --- --- --- 13 70.5 --- --- --- --- --- --- --- --- --- --- --- 14 73.1 --- --- --- --- --- --- --- --- --- --- --- 15 66.0 --- --- --- --- --- --- --- --- --- --- --- 16 68.1 --- --- --- --- --- --- --- --- --- --- --- 17 70.8 --- --- --- --- --- --- --- --- --- --- --- 18 71.3 --- --- --- --- --- --- --- --- --- --- --- 19 67.9 --- --- --- --- --- --- --- --- --- --- --- 20 68.2 --- --- --- --- --- --- --- --- --- --- --- 21 70.4 --- --- --- --- --- --- --- --- --- --- --- 22 72.5 --- --- --- --- --- --- --- --- --- --- --- 23 75.6 --- --- --- --- --- --- --- --- --- --- --- 24 68.3 --- --- --- --- --- --- --- --- --- --- --- 25 71.0 --- --- --- --- --- --- --- --- --- --- --- 26 71.8 --- --- --- --- --- --- --- --- --- --- --- 27 74.4 --- --- --- --- --- --- --- --- --- --- --- 28 75.3 --- --- --- --- --- --- --- --- --- --- --- 29 64.5 --- --- --- --- --- --- --- --- --- --- 30 71.9 --- --- --- --- --- --- --- --- --- --- 31 71.4 --- --- --- --- --- --- --- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ VOL 4278 585