US Army Corps of Engineers

John Day Dam

Monday May 18, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 234.90 60.30171.90 265.42 161.09 104.33
2 233.90 61.00171.90 265.42 160.93 104.49
3 234.50 61.60171.90 265.42 160.92 104.50
4 233.60 60.80171.90 265.42 160.92 104.50
5 232.00 59.20171.90 265.42 160.82 104.60
6 232.50 59.70171.90 265.32 160.82 104.50
7 233.20 60.90171.40 265.32 160.72 104.60
8 232.70 60.40171.40 265.32 160.42 104.90
9 237.70 63.70171.30 265.22 160.22 105.00
10 236.40 62.80172.80 265.32 160.70 104.62
11 238.80 63.30172.80 265.32 161.02 104.30
12 237.20 63.50172.80 265.32 160.92 104.40
13 239.10 63.60172.80 265.32 161.04 104.28
14 235.60 61.90172.80 265.32 161.02 104.30
15 235.90 62.20172.80 265.32 161.02 104.30
16 235.80 62.00172.80 265.32 161.32 104.00
17 235.20 61.50172.80 265.32 161.32 104.00
18 234.10 60.80172.40 265.32 161.23 104.09
19 236.60 63.40172.20 265.32 161.32 104.00
20 237.10 64.00172.20 265.32 161.42 103.90
21 236.00 62.90172.20 265.32 161.22 104.10
22 235.90 62.80172.20 265.32 161.03 104.29
23 238.80 63.90172.20 265.32 160.92 104.40
24 236.60 63.50172.20 265.32 160.82 104.50
AVG 235.59 62.07172.23 265.34 160.97 104.37
MAX 239.10 64.00172.80 265.42 161.42 105.00
MIN 232.00 59.20171.30 265.22 160.22 103.90