Grand Coulee Dam

December 2025

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	52279	2178	201	84.40	89.20	89.20	0.00	1284.60	1284.59	959.96	324.63	0.00	0	1568.64
2	46094	1921	216	82.40	76.80	76.80	0.00	1284.80	1284.68	958.38	326.30	0.00	0	1568.63
3	56631	2360	218	91.70	95.10	95.10	0.00	1284.70	1284.73	960.39	324.34	0.19	120	1568.64
4	61363	2557	221	94.70	102.70	102.70	0.00	1284.50	1284.56	960.90	323.66	0.00	0	1568.64
5	69065	2878	212	85.90	117.20	117.20	0.00	1283.70	1283.94	962.22	321.72	0.00	0	1568.39
6	60235	2510	216	85.80	101.60	101.60	0.00	1283.20	1283.51	960.56	322.95	0.00	0	1568.61
7	57349	2390	218	90.10	96.40	96.40	0.00	1283.10	1283.22	960.25	322.97	0.00	0	1568.62
8	55896	2329	211	83.20	94.10	94.10	0.00	1282.80	1282.93	960.29	322.64	0.00	0	1568.64
9	41468	1728	214	93.60	69.70	69.70	0.00	1283.40	1283.19	957.79	325.40	0.00	0	1568.60
10	35878	1495	214	89.70	59.70	59.70	0.00	1284.20	1283.87	956.82	327.05	0.00	0	1568.63
11	36389	1516	214	82.80	62.90	62.90	0.00	1284.70	1284.52	957.26	327.26	0.00	0	1568.61
12	36348	1514	217	81.30	60.20	60.20	0.00	1285.20	1284.91	957.47	327.44	0.00	0	1568.61
13				86.10	68.90	68.90	0.00	1285.60	1285.50	957.73	327.77			1568.61
14				97.80	89.80	89.80	0.00	1285.90	1285.84	959.78	326.06			1568.61
15				91.00	89.80	89.80	0.00	1285.90	1285.93	959.54	326.39			1568.68
16				109.50	97.10	97.10	0.00	1286.20	1286.05	960.20	325.85			1568.65
17				117.00	114.80	114.80	0.00	1286.30	1286.18	961.85	324.33			1568.68
18				118.50	101.50	101.50	0.00	1286.70	1286.41	961.33	325.08			1568.67
19				125.40	88.90	88.90	0.00	1287.60	1287.31	959.96	327.35			1568.64
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TOT	608995		2572
AVG	50750	2115	214	94.26	88.23	88.23	0.00	1284.90	1284.84	959.61	325.22	0.02	10	1568.62

MAX	69065			125.40	117.20	117.20	0.00	1287.60	1287.31	962.22	327.77	0.19	120	1568.68
MIN	35878			81.30	59.70	59.70	0.00	1282.80	1282.93	956.82	321.72	0.00	0	1568.39