Grand Coulee Dam

September 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	42132	1756	157	70.70	74.50	74.40	0.10	1276.40	1276.51	958.72	317.79	10.50	7171	1564.65
2	43778	1824	161	75.30	79.40	79.30	0.10	1276.00	1276.16	958.87	317.29	10.50	7172	1564.91
3	37872	1578	147	70.90	68.70	68.70	0.10	1275.80	1275.88	958.29	317.59	9.61	6593	1565.04
4	27697	1154	159	77.90	48.90	48.80	0.10	1276.30	1276.02	956.07	319.95	8.38	5661	1565.10
5	27751	1156	151	65.80	47.70	47.70	0.10	1276.60	1276.43	956.22	320.21	7.88	5526	1565.19
6	25386	1058	146	64.80	43.40	43.30	0.10	1276.90	1276.65	955.59	321.06	10.50	7176	1565.60
7	28486	1187	144	62.70	49.20	49.10	0.10	1277.00	1276.88	956.07	320.81	10.50	7174	1565.40
8	30639	1277	163	70.60	53.30	53.30	0.10	1277.10	1277.03	956.55	320.48	10.45	7164	1566.20
9	23935	997	149	69.40	43.10	43.10	0.10	1277.60	1277.30	955.85	321.45	10.42	7164	1566.62
10	25954	1081	150	61.50	44.30	44.20	0.10	1277.70	1277.68	956.00	321.68	10.40	7157	1567.01
11	28162	1173	153	65.80	48.60	48.50	0.10	1277.90	1277.84	956.06	321.78	10.40	7154	1567.49
12	29415	1226	149	72.00	52.10	52.00	0.10	1278.20	1278.07	956.18	321.89	10.40	7156	1567.87
13	26851	1119	145	71.20	48.60	48.60	0.10	1278.50	1278.30	955.73	322.57	10.40	7153	1568.32
14	22180	924	150	71.00	38.30	38.20	0.10	1279.10	1278.75	955.33	323.42	10.26	7053	1568.76
15	32232	1343	147	68.90	54.80	54.70	0.10	1279.40	1279.29	956.78	322.51	3.03	2054	1568.71
16	45297	1887	148	75.00	77.80	77.70	0.10	1279.20	1279.39	958.71	320.68	2.91	1966	1568.57
17	46053	1919	148	75.00	80.40	80.30	0.10	1279.00	1279.13	958.59	320.54	2.90	1964	1568.48
18	48166	2007	140	75.20	83.10	83.00	0.10	1278.70	1278.94	959.42	319.52	3.09	2074	1568.34
19	39290	1637	147	74.20	69.10	69.00	0.10	1278.70	1278.73	957.65	321.08	3.57	2372	1568.25
20	29978	1249	153	80.30	55.80	55.70	0.10	1279.30	1279.01	956.56	322.45	3.60	2390	1568.22
21	25656	1069	160	73.10	50.10	50.00	0.10	1279.60	1279.42	957.42	322.00	10.80	7176	1568.62
22	30618	1276	190	78.00	51.60	51.50	0.10	1280.20	1279.87	957.82	322.05	3.80	2533	1568.62
23	27409	1142	194	77.10	47.20	47.10	0.10	1280.90	1280.52	957.30	323.22	2.96	1986	1568.54
24	29745	1239	193	83.10	50.40	50.30	0.10	1281.70	1281.27	957.46	323.81	2.86	1913	1568.45
25	25839	1077	192	72.00	43.70	43.70	0.10	1282.30	1281.94	957.58	324.36	2.96	1983	1568.33
26	30423	1268	192	75.50	51.50	51.40	0.10	1282.90	1282.61	957.92	324.69	2.58	1732	1568.18
27	28298	1179	200	69.80	47.20	47.10	0.10	1283.40	1283.15	957.07	326.08	3.35	2227	1568.10
28	29887	1245	194	69.30	50.00	50.00	0.10	1283.60	1283.48	957.77	325.71	9.00	5976	1568.29
29	30142	1256	196	69.50	50.30	50.30	0.10	1284.10	1283.76	957.65	326.11	2.24	1487	1568.31
30	27193	1133	191	67.00	49.30	49.20	0.10	1284.40	1284.17	957.54	326.63	2.99	1991	1568.20

TOT	946464		4909
AVG	31549	1315	164	71.75	55.08	55.01	0.10	1279.28	1279.14	957.16	321.98	6.77	4610	1567.41

MAX	48166			83.10	83.10	83.00	0.10	1284.40	1284.17	959.42	326.63	10.80	7176	1568.76
MIN	22180			61.50	38.30	38.20	0.10	1275.80	1275.88	955.33	317.29	2.24	1487	1564.65