US Army Corps of Engineers

McNary Dam

Sunday May 31, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 202.50 53.30144.50 337.99 266.90 71.09
2 201.70 52.90144.10 337.97 266.82 71.15
3 201.90 53.30143.90 337.97 266.85 71.12
4 201.10 52.60143.80 337.96 267.02 70.94
5 200.90 52.50143.80 337.91 266.84 71.07
6 201.20 52.60143.80 337.92 266.77 71.15
7 201.20 52.50143.90 337.97 266.70 71.27
8 201.20 52.30144.20 338.00 266.63 71.37
9 201.00 51.90144.40 338.06 266.66 71.40
10 201.00 51.60144.70 338.13 266.70 71.43
11 201.80 52.10145.00 338.16 266.61 71.55
12 202.60 52.70145.20 338.21 266.53 71.68
13 202.90 52.80145.40 338.23 266.48 71.75
14 203.20 52.90145.50 338.27 266.48 71.79
15 203.20 52.80145.60 338.29 266.42 71.87
16 202.90 52.60145.60 338.26 266.33 71.93
17 214.00 53.30156.00 338.17 266.70 71.47
18 221.70 52.90164.20 338.07 266.69 71.38
19 223.20 54.70163.80 337.99 266.66 71.33
20 220.30 52.40163.20 337.88 266.64 71.24
21 219.80 52.60162.60 337.83 266.57 71.26
22 218.80 52.60161.60 337.77 266.51 71.26
23 214.10 52.00157.40 337.74 266.37 71.37
24 214.00 52.30157.10 337.63 266.46 71.17
AVG 207.34 52.67149.97 338.02 266.64 71.38
MAX 223.20 54.70164.20 338.29 267.02 71.93
MIN 200.90 51.60143.80 337.63 266.33 70.94