Grand Coulee Dam

June 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	94917	3955	208	187.10	166.50	166.50	0.00	1274.70	1274.57	967.30	307.27	8.68	6039	1569.24
2	96165	4007	243	193.10	168.50	168.50	0.00	1275.20	1274.97	967.57	307.40	7.06	4950	1569.21
3	97778	4074	240	183.60	170.90	170.90	0.00	1275.30	1275.22	967.46	307.76	7.12	4936	1569.25
4	95636	3985	242	187.90	166.90	166.90	0.00	1275.70	1275.47	966.94	308.53	7.17	4952	1569.21
5	91024	3793	241	182.70	158.60	158.60	0.00	1276.10	1275.95	966.58	309.37	7.26	4965	1569.22
6	89721	3738	243	183.80	156.30	156.30	0.00	1276.60	1276.41	966.96	309.45	9.05	6190	1569.35
7	81419	3392	255	187.40	141.00	141.00	0.00	1277.60	1277.18	965.24	311.94	10.30	7056	1569.61
8	89425	3726	260	181.90	154.90	154.90	0.00	1278.10	1277.83	966.23	311.60	6.53	4478	1569.58
9	67608	2817	215	173.20	116.40	116.40	0.00	1279.40	1278.74	962.32	316.42	6.60	4584	1569.62
10				166.80	115.80	115.80	0.00	1280.60	1280.08	962.08	318.00			1569.57
11				157.90	120.00	120.00	0.00	1281.40	1281.06	962.86	318.20			1569.54
12				147.90	138.20	138.20	0.00	1281.50	1281.58	964.24	317.34			1569.46
13				146.90	143.20	143.20	0.00	1281.40	1281.55	964.70	316.85			1569.40
14				142.20	150.30	150.30	0.00	1281.20	1281.43	965.30	316.13			1569.83
15				142.80	151.80	151.80	0.00	1281.00	1281.16	965.60	315.56			1568.28
16				153.90	124.00	124.00	0.00	1281.60	1281.32	963.23	318.09			1568.25
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TOT	803693		2147
AVG	89299	3721	239	169.94	146.46	146.46	0.00	1278.59	1278.41	965.29	313.12	7.75	5350	1569.29

MAX	97778			193.10	170.90	170.90	0.00	1281.60	1281.58	967.57	318.20	10.30	7056	1569.83
MIN	67608			142.20	115.80	115.80	0.00	1274.70	1274.57	962.08	307.27	6.53	4478	1568.25