US Army Corps of Engineers

Bonneville Dam

Saturday April 20, 2024

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsPH 1 Forebay ElevationTailwater ElevationAverage HeadProject Forebay ElevationStevenson Gage ElevationProject Tailwater Elevation
1 197.30 36.40148.50 74.00 16.20 57.80 73.70 74.80 16.20
2 197.40 36.30148.70 74.20 16.20 58.00 74.00 75.00 16.30
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
AVG 197.35 36.35148.60 74.10 16.20 57.90 73.85 74.90 16.25
MAX 197.40 36.40148.70 74.20 16.20 58.00 74.00 75.00 16.30
MIN 197.30 36.30148.50 74.00 16.20 57.80 73.70 74.80 16.20

  Powerhouse 1 Powerhouse 2 Project
HourGeneration Flow kcfsForebay ElevationForebay ElevationGeneration Flow kcfsSpillway Gates in UseMiscellaneous Flow kcfs*
1 0.00 74.0 73.7 36.40 18 12.4
2 0.00 74.2 74.0 36.30 18 12.4
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
AVG 0.00 74.1 73.8 36.35 18 12.4
MAX 0.00 74.2 74.0 36.40 18 12.4
MIN 0.00 74.0 73.7 36.30 18 12.4

* Miscellaneous Flow includes fish ladders, PH1 sluiceway, navigation lock, PH2 DSM, UMT, and PH2 corner collector (B2CC). When all routes are in operation (March-August), total Misc Flow will be ~12.4 kcfs. Flow through the B2CC is ~5 kcfs, so fluctuations of +/-5 kcfs at any time of year indicate the B2CC is open/closed.