US Army Corps of Engineers

Lower Granite Dam & Lake

March 2024

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feetMidnight Lewiston Gage ft
1 7574 316 46 41.60 44.40 42.70 1.60 735.38 736.18 636.73 99.45 735.55
2 6943 289 46 40.20 41.00 39.50 1.40 735.18 735.49 636.72 98.77 735.49
3 6044 252 46 39.40 35.60 34.20 1.30 736.13 735.71 636.59 99.12 736.07
4 6569 274 46 37.50 38.70 37.00 1.60 735.82 736.28 636.95 99.33 735.94
5 5777 241 47 36.80 34.40 32.60 1.60 736.43 736.24 636.74 99.50 736.26
6 6461 269 47 35.20 38.20 36.50 1.70 735.68 736.27 636.88 99.39 735.96
7 5716 238 47 35.50 34.00 32.40 1.50 736.05 735.99 637.02 98.97 735.83
8 5750 240 47 33.70 34.20 32.50 1.50 735.92 735.98 636.89 99.09 735.79
9 5636 235 46 32.80 33.40 31.70 1.60 735.77 736.26 636.55 99.71 736.04
10 5309 221 44 32.30 33.00 31.30 1.60 735.85 735.83 636.48 99.35 735.84
11 5652 235 46 33.10 33.40 31.80 1.50 735.76 735.80 636.25 99.55 735.79
12 5368 224 45 33.60 31.70 30.10 1.50 736.24 735.95 636.09 99.86 736.30
13 5816 242 46 34.30 34.80 32.80 1.60 736.08 736.10 636.54 99.56 736.20
14 5639 235 48 32.50 33.80 31.90 1.50 735.79 735.87 636.53 99.34 735.73
15 5769 240 47 34.50 34.30 32.50 1.40 735.70 735.70 636.33 99.37 735.76
16 5701 238 46 34.30 34.00 32.00 1.60 735.94 736.15 636.40 99.75 736.02
17 5764 240 47 35.60 34.40 32.40 1.60 736.21 736.35 636.53 99.82 736.29
18 5901 246 47 36.10 35.10 33.10 1.60 736.29 736.45 636.33 100.12 736.54
19 6777 282 46 38.00 40.80 38.60 1.50 735.69 735.93 636.09 99.84 735.78
20 6723 280 46 41.10 40.50 38.60 1.50 735.72 735.47 635.99 99.48 735.99
21 6235 260 46 44.40 44.40 35.80 8.20 735.73 735.49 635.55 99.94 735.94
22 7129 297 46 47.50 49.40 40.90 8.10 735.34 735.42 635.53 99.89 735.55
23 6936 289 45 47.10 48.20 39.70 8.10 735.06 735.37 635.34 100.03 735.47
24 6559 273 46 48.00 46.00 37.70 7.90 735.65 735.21 635.64 99.57 735.77
25 6911 288 46 48.60 48.70 39.90 8.40 735.76 735.69 636.34 99.35 735.79
26 6299 262 46 44.40 45.80 36.50 8.90 735.62 736.08 636.99 99.09 735.52
27 6089 254 46 43.70 42.90 35.60 8.00 735.31 735.33 637.29 98.04 735.58
28 6267 261 47 45.60 44.80 36.20 8.20 735.51 735.52 636.12 99.40 735.75
29 6459 269 47 45.90 45.80 37.00 8.50 735.49 735.75 635.41 100.34 735.68
30 6349 265 42 44.80 45.00 36.20 8.40 735.43 735.69 633.93 101.76 735.66
31 6809 284 35 43.50 47.00 39.00 7.70 734.58 735.02 633.70 101.32 734.92
TOT192931  1419         
AVG 6224 259 46 39.41 39.60 35.44 3.91 735.71 735.82 636.21 99.62 735.83
MAX 7574   48.60 49.40 42.70 8.90 736.43 736.45 637.29 101.76 736.54
MIN 5309   32.30 31.70 30.10 1.30 734.58 735.02 633.70 98.04 734.92