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| Montana Streamflow Prospects as of May |
| | Site # | Site Name | Value |
| 1 | BADGER CREEK nr Browning | 117 |
| 2 | BEAVER CREEK near Havre | 80 |
| 3 | BEAVERHEAD RIVER at | 98 |
| 4 | BEAVERHEAD RIVER nr Grant | 108 |
| 5 | BIG HOLE RIVER at Wisdom | 100 |
| 6 | BIG HOLE RIVER nr Melrose | 109 |
| 7 | BIGHORN RIVER nr St. Xavier | 91 |
| 8 | BITTERROOT at Missoula | 114 |
| 9 | BITTERROOT nr Darby | 111 |
| 10 | BLACKFOOT RIVER nr Bonner | 105 |
| 11 | BOULDER RIVER at Big Timber | 102 |
| 12 | BOULDER RIVER nr Boulder | 91 |
| 13 | CLARK FK at Whitehorse Rpds | 112 |
| 14 | CLARK FORK abv Milltown | 126 |
| 15 | CLARK FORK abv Missoula | 115 |
| 16 | CLARK FORK at St. Regis | 115 |
| 17 | CLARK FORK blw Missoula | 114 |
| 18 | CLARK FORK nr Plains | 108 |
| 19 | CLARKS FORK RIVER nr Belfry | 114 |
| 21 | COMO RESERVOIR Inflow | 115 |
| 22 | COONEY RESERVOIR Inflow | 71 |
| 24 | DEARBORN nr Criag | 100 |
| 25 | DUPUYER CREEK nr Valier | 110 |
| 26 | ENNIS Reservoir Inflow | 118 |
| 27 | FISHER RIVER nr Libby | 161 |
| 28 | FLATHEAD at Columbia Falls | 105 |