Wanapum Dam & Lake

March 2026

Day of Month	Total Generation MWh	Average Generation MW	Station Use MWh	Inflow kcfs	Total Outflow kcfs	Generation Flow kcfs	Spill kcfs	Midnight Reservoir Elevation	Average Forebay Elevation	Average Tailwater Elevation	Average Head feet
1	19607	817	18	132.10	144.50	143.10	0.00	568.28	569.47	492.35	77.12
2	17359	723	17	131.90	128.10	126.20	0.50	568.81	568.63	491.59	77.04
3	17889	745	17	126.70	133.70	132.30	0.00	567.84	568.15	491.59	76.56
4	15527	647	18	119.30	117.30	114.40	1.50	568.12	567.96	490.40	77.56
5	15445	644	18	133.90	119.50	110.80	7.30	570.10	569.46	490.34	79.12
6	15443	643	19	144.80	136.70	109.40	25.90	571.22	570.94	491.66	79.28
7	11504	479	18	128.20	141.60	82.40	57.80	569.38	570.20	491.81	78.39
8								567.40
9								567.62
10								571.04
11								570.19
12								569.46
13								570.23
14								570.25
15								568.11
16								570.67
17								570.49
18								570.49
19								571.29
20								571.02
21								570.43
22								569.75
23								570.80
24								570.30
25								570.43
26								570.54
27								570.63
28								570.71
29								569.52
30								571.06
31								570.66

TOT	112774		125
AVG	16111	671	18	130.99	131.63	116.94	13.29	569.90	569.26	491.39	77.87

MAX	19607			144.80	144.50	143.10	57.80	571.29	570.94	492.35	79.28
MIN	11504			119.30	117.30	82.40	0.00	567.40	567.96	490.34	76.56