MISSOURI RIVER MAINSTEM RESERVOIR DATA Pool Elevation (feet above mean sea level) On July 31 Change in July Water in Storage (1,000 acre-feet) On July 31 % of 1967-2025 Average Change in July Fort Peck 2223.9 0.0 12,786 85 +8 Garrison 1827.4 -0.8 14,846 77 -205 Oahe 1596.0 -1.9 15,414 83 -425 Big Bend 1420.8 -0.4 1,678 99 -22 Fort Randall 1355.7 +0.7 3,417 91 +3 Gavins Point 1206.7 +0.1 342 89 +2 Total 48,483 83 -639 WATER RELEASES AND ENERGY GENERATION FOR JULY Average Release in 1,000 cfs Releases in 1,000 acre-feet Generation in Million kWh Fort Peck 6.8 418 66 Garrison 18.0 1,104 161 Oahe 23.8 1,462 209 Big Bend 24.4 1,500 80 Fort Randall 24.0 1,475 159 Gavins Point 25.7 1,579 72 Total 747
Taken: 08.10.2026 | Photo by Eileen Williamson