John Day & Lake Umatilla

August 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
1	17505	729	41	115.90	116.20	94.40	20.60	263.90	263.88	160.35	103.53
2	16187	674	41	111.90	108.80	86.90	20.60	264.02	263.90	159.95	103.95
3	15088	629	40	92.80	103.30	81.40	20.60	263.60	263.81	160.39	103.42
4	13612	567	41	90.20	95.20	73.50	20.50	263.39	263.47	160.44	103.03
5	16193	675	41	112.30	109.40	87.40	20.50	263.51	263.55	160.21	103.34
6	17432	726	41	116.00	115.60	93.80	20.50	263.53	263.46	159.93	103.53
7	18156	756	41	129.20	119.70	97.80	20.50	263.91	263.73	160.14	103.59
8	17303	721	40	118.10		93.20	20.50	264.02	263.78
9	19816	826	40	128.50		106.70	20.60	264.01	263.98
10	19163	798	40	113.20	125.30	103.40	20.50	263.52	263.79	160.35	103.44
11	20914	871	41	135.40	135.40	113.40	20.60	263.53	263.63	160.55	103.08
12	21276	887	41	134.90	137.20	115.40	20.70	263.43	263.69	160.58	103.11
13	19469	811	41	142.30	127.30	105.40	20.50	264.04	263.79	160.57	103.22
14	17816	742	41	109.80	117.90	96.20	20.60	263.71	263.84	160.40	103.44
15				112.20	109.60	87.80	20.50	263.82	263.81	160.09	103.72
16				109.90	110.30	88.40	20.50	263.80	263.74	160.43	103.31
17				114.00	106.30	84.70	20.40	264.11	263.94	160.42	103.52
18				110.90	118.60	96.80	20.50	263.80	263.92	160.80	103.12
19				112.70	117.30	95.60	20.50	263.61	263.68	160.57	103.11
20				115.50	104.80	83.00	20.50	263.89	263.71	160.09	103.62
21				109.10	113.00	91.30	20.50	263.74	263.85	160.05	103.80
22
23
24
25
26
27
28
29
30
31

TOT	249929		569
AVG	17852	744	41	115.94	115.33	94.12	20.53	263.76	263.76	160.33	103.41

MAX	21276			142.30	137.20	115.40	20.70	264.11	263.98	160.80	103.95
MIN	13612			90.20	95.20	73.50	20.40	263.39	263.46	159.93	103.03