Grand Coulee Dam

April 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	Banks Lake Pump kcfs	Banks Lake Pump MWh	Banks Lake Elev
1	61450	2560	190	117.50	114.90	114.90	0.00	1251.20	1251.21	962.70	288.51	4.50	3360	1568.97
2	48706	2029	174	119.20	95.00	95.00	0.00	1251.80	1251.41	961.17	290.24	4.64	3456	1568.96
3	57189	2383	174	118.50	108.50	108.50	0.00	1252.00	1251.87	960.78	291.09	4.50	3360	1568.90
4	56198	2342	189	119.20	109.20	109.20	0.00	1252.20	1251.86	961.92	289.94	4.50	3360	1568.85
5	54854	2286	190	114.80	104.10	104.10	0.00	1252.30	1252.16	961.11	291.05	4.50	3360	1568.79
6	54807	2284	191	113.60	105.10	105.10	0.00	1252.50	1252.31	961.15	291.16	2.30	1707	1568.60
7	43778	1824	201	112.20	85.60	85.60	0.00	1253.30	1252.81	959.44	293.37	1.66	1176	1568.15
8	52886	2204	186	113.30	99.70	99.70	0.00	1253.60	1253.28	961.30	291.98	4.97	3441	1568.00
9	50945	2123	183	109.80	95.60	95.60	0.00	1253.80	1253.59	960.90	292.69	4.62	3389	1567.83
10	59978	2499	187	110.70	112.20	112.20	0.00	1253.70	1253.63	962.20	291.43	4.81	3599	1567.70
11	60774	2532	191	121.10	113.60	113.60	0.00	1253.60	1253.57	962.00	291.57	9.10	6768	1567.89
12	69025	2876	193	117.70	129.40	129.40	0.00	1253.00	1253.16	963.65	289.51	9.10	6767	1568.11
13	56210	2342	193	120.80	106.80	106.80	0.00	1253.10	1252.92	961.39	291.53	9.02	6766	1568.31
14	58664	2444	193	122.00	109.70	109.70	0.00	1253.20	1253.13	961.45	291.68	9.01	6768	1568.56
15	56608	2359	197	124.80	107.50	107.50	0.00	1253.50	1253.26	961.05	292.21	9.02	6764	1568.64
16	53229	2218	195	117.90	101.30	101.30	0.00	1253.70	1253.46	961.25	292.21	9.05	6764	1568.77
17	63365	2640	194	122.90	119.80	119.80	0.00	1253.50	1253.58	962.84	290.74	9.05	6761	1568.93
18	50137	2089	187	121.00	96.80	96.80	0.00	1254.00	1253.49	960.66	292.83	9.03	6760	1569.08
19	75079	3128	192	125.10	140.20	140.20	0.00	1253.30	1253.68	964.26	289.42	8.99	6756	1569.22
20	70368	2932	188	124.90	132.60	132.60	0.00	1252.80	1252.96	964.39	288.57	7.40	5437	1569.25
21	59095	2462	191	124.20	110.80	110.80	0.00	1253.10	1252.85	962.21	290.64	4.80	3562	1569.10
22	58780	2449	192	128.70	111.80	111.80	0.00	1253.30	1253.13	962.09	291.04	7.67	5769	1569.23
23	63317	2638	198	133.10	119.80	119.80	0.00	1253.50	1253.30	962.25	291.05	7.40	5569	1569.28
24	66371	2765	207	140.70	125.90	125.90	0.00	1253.70	1253.44	963.18	290.26	7.47	5590	1569.39
25	67890	2829	210	134.20	129.20	129.20	0.00	1253.70	1253.57	963.62	289.95	7.60	5616	1569.50
26	61529	2564	207	137.60	114.80	114.80	0.00	1254.10	1253.76	962.20	291.56	7.60	5616	1569.61
27	60732	2530	200	131.10	112.70	112.70	0.00	1254.50	1254.21	961.75	292.46	6.39	4709	1569.69
28	68732	2864	205	130.10	129.60	129.60	0.00	1254.30	1254.30	963.00	291.30	6.42	4731	1569.70
29	76620	3192	203	131.60	146.40	146.40	0.00	1253.70	1253.93	965.27	288.66	4.78	3469	1569.58
30	71002	2958	199	120.80	133.20	133.20	0.00	1253.20	1253.35	964.21	289.14	5.08	3746	1569.48

TOT	1808318		5800
AVG	60277	2512	193	122.64	114.06	114.06	0.00	1253.24	1253.11	962.18	290.93	6.50	4830	1568.87

MAX	76620			140.70	146.40	146.40	0.00	1254.50	1254.30	965.27	293.37	9.10	6768	1569.70
MIN	43778			109.80	85.60	85.60	0.00	1251.20	1251.21	959.44	288.51	1.66	1176	1567.70