Grand Coulee Dam

May 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	84404	3517	200	124.60	160.00	160.00	0.00	1252.00	1252.49	967.08	285.41	2.68	1968	1569.15
2	68412	2850	199	122.60	130.40	130.40	0.00	1251.60	1251.72	964.00	287.72	5.90	4406	1569.11
3				133.90	127.00	127.00	0.00	1251.60	1251.59	963.19	288.40			1569.06
4				138.00	143.00	143.00	0.00	1251.30	1251.50	964.71	286.79			1568.97
5				137.60	136.40	136.40	0.00	1251.20	1251.31	963.86	287.45			1568.74
6				142.00	93.50	93.50	0.00	1252.50	1251.77	960.05	291.72			1568.62
7				144.60	97.10	97.10	0.00	1253.70	1253.15	960.23	292.92			1568.52
8				138.00	106.50	106.50	0.00	1254.40	1253.96	961.47	292.49			1568.62
9				142.70	123.10	123.10	0.00	1254.70	1254.48	962.68	291.80			1568.69
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TOT	152816		399
AVG	76408	3184	200	136.00	124.11	124.11	0.00	1252.56	1252.44	963.03	289.41	4.29	3187	1568.83

MAX	84404			144.60	160.00	160.00	0.00	1254.70	1254.48	967.08	292.92	5.90	4406	1569.15
MIN	68412			122.60	93.50	93.50	0.00	1251.20	1251.31	960.05	285.41	2.68	1968	1568.52