US Army Corps of Engineers

McNary Dam

Friday May 15, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 260.90 54.50201.70 338.11 268.10 70.01
2 259.70 53.10202.00 338.15 267.80 70.35
3 260.50 53.70202.20 338.16 267.84 70.32
4 260.70 53.80202.20 338.17 267.81 70.36
5 260.30 53.70201.90 338.11 267.89 70.22
6 260.80 54.30201.90 338.15 267.93 70.22
7 259.70 53.20201.90 338.09 267.92 70.17
8 259.50 53.20201.60 338.05 268.07 69.98
9 258.40 53.20200.60 337.89 268.07 69.82
10 259.80 53.90201.20 337.81 268.20 69.61
11 258.10 55.10198.30 337.79 267.91 69.88
12 242.10 54.80182.60 337.78 267.83 69.95
13 241.90 55.00182.20 337.74 267.79 69.95
14 241.50 54.50182.30 337.79 267.81 69.98
15 241.00 53.80182.50 337.79 267.58 70.21
16 241.20 54.20182.30 337.72 267.55 70.17
17 241.30 54.50182.10 337.73 267.64 70.09
18 241.30 54.20182.40 337.76 267.69 70.07
19 242.60 55.50182.40 337.76 267.80 69.96
20 240.80 53.90182.20 337.71 267.83 69.88
21 240.20 53.60181.90 337.65 267.74 69.91
22 240.80 54.20181.90 337.70 267.61 70.09
23 241.00 54.20182.10 337.75 267.61 70.14
24 240.70 53.80182.20 337.73 267.52 70.21
AVG 249.78 54.08191.03 337.88 267.81 70.06
MAX 260.90 55.50202.20 338.17 268.20 70.36
MIN 240.20 53.10181.90 337.65 267.52 69.61