US Army Corps of Engineers

McNary Dam

Sunday June 21, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 143.00 51.10 87.20 339.72 265.10 74.62
2 144.90 52.90 87.30 339.74 265.10 74.64
3 145.00 53.20 87.20 339.73 265.14 74.59
4 150.10 58.30 87.20 339.76 265.46 74.30
5 160.40 68.50 87.20 339.72 265.69 74.03
6 171.60 79.80 87.10 339.64 265.87 73.77
7 168.80 76.90 87.10 339.75 265.64 74.11
8 156.00 63.80 87.50 339.82 265.37 74.45
9 154.90 62.70 87.50 339.80 265.33 74.47
10 154.00 62.00 87.30 339.76 265.30 74.46
11 143.40 51.40 87.40 339.78 265.09 74.69
12 142.80 50.80 87.30 339.72 265.07 74.65
13 143.10 51.30 87.10 339.68 265.06 74.62
14 142.70 50.90 87.10 339.65 264.94 74.71
15 142.70 51.10 87.00 339.62 264.97 74.65
16 143.40 51.90 86.80 339.61 265.03 74.58
17 142.80 51.20 86.90 339.62 264.97 74.65
18 143.60 52.10 86.80 339.57 264.93 74.64
19 143.70 52.40 86.60 339.55 264.80 74.75
20 141.70 50.40 86.60 339.52 264.65 74.87
21 140.90 49.70 86.50 339.49 264.60 74.89
22 140.80 49.70 86.40 339.46 264.57 74.89
23 140.90 49.90 86.30 339.45 264.55 74.90
24 140.70 49.70 86.30 339.42 264.67 74.75
AVG 147.58 55.90 86.99 339.65 265.08 74.57
MAX 171.60 79.80 87.50 339.82 265.87 74.90
MIN 140.70 49.70 86.30 339.42 264.55 73.77
BUILDING STRONG®