Chief Joseph Dam & Rufus Woods Lake

April 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
1	34391	1433	32	115.90	108.10	108.10	0.00	955.20	954.10	781.90	172.20
2	34067	1419	30	98.50	109.30	107.50	1.80	952.40	954.40	783.00	171.40
3	33490	1395	29	108.60	107.80	107.80	0.00	952.60	951.90	783.00	168.90
4	33730	1405	28	110.50	109.00	106.90	2.10	953.00	953.40	782.70	170.70
5	34022	1418	26	106.60	107.80	107.80	0.00	952.70	953.00	782.30	170.70
6	32389	1350	26	104.40	102.40	102.40	0.00	953.50	953.00	781.70	171.30
7	27682	1153	26	85.80	87.00	87.00	0.00	953.20	953.10	780.60	172.50
8	31511	1313	26	101.60	98.10	98.10	0.00	954.10	953.60	780.40	173.20
9	31552	1315	27	97.50	98.30	98.30	0.00	953.90	953.80	781.10	172.70
10	32772	1366	27	113.60	117.10	102.80	14.30	953.00	953.50	781.50	172.00
11	34649	1444	26	116.20	118.00	110.10	7.90	952.50	952.90	782.00	170.90
12	34750	1448	26	133.00	127.20	110.50	16.70	954.00	953.20	782.20	171.00
13	34683	1445	26	107.20	111.10	109.50	1.60	953.00	953.40	781.60	171.80
14	34522	1438	27	111.00	111.00	108.90	2.10	953.00	952.80	780.90	171.90
15	32251	1344	28	108.60	108.60	102.40	6.20	953.00	952.40	781.40	171.00
16	33365	1390	28	103.60	104.40	104.40	0.00	952.80	953.50	781.20	172.30
17	35687	1487	28	119.20	114.90	111.80	3.10	953.90	953.50	781.60	171.90
18	34523	1438	26	101.10	108.10	108.10	0.00	952.10	953.30	781.40	171.90
19	40798	1700	26	138.90	131.50	131.50	0.00	954.00	952.50	782.80	169.70
20	38319	1597	27	137.20	135.20	124.10	11.10	954.50	954.00	783.30	170.70
21	29629	1235	25	113.00	116.10	93.00	23.10	953.70	953.80	781.20	172.60
22	33222	1384	25	114.70	120.50	105.30	15.20	952.10	953.30	782.40	170.90
23	37568	1565	23	119.00	119.80	119.80	0.00	952.00	952.10	783.20	168.90
24	39057	1627	24	127.20	123.70	123.70	0.00	952.90	952.60	782.30	170.30
25	41230	1718	24	130.60	130.20	130.20	0.00	953.00	952.90	783.20	169.70
26	38102	1588	23	118.90	119.70	119.70	0.00	952.80	952.90	782.00	170.90
27	36617	1526	23	113.70	116.00	116.00	0.00	952.20	952.60	781.70	170.90
28	39387	1641	23	128.40	127.20	127.20	0.00	952.50	952.10	783.70	168.40
29	45217	1884	23	148.00	149.90	149.90	0.00	952.00	953.20	785.50	167.70
30	33899	1412	24	134.20	124.10	110.70	13.40	954.60	953.60	783.40	170.20

TOT	1053081		783
AVG	35103	1463	26	115.56	115.40	111.45	3.95	953.14	953.15	782.17	170.97

MAX	45217			148.00	149.90	149.90	23.10	955.20	954.40	785.50	173.20
MIN	27682			85.80	87.00	87.00	0.00	952.00	951.90	780.40	167.70