G R E A T    P L A I N S    R E G I O N A L    O F F I C E                              
 
       Daily Reservoir Report for: 2026FEB11                                                                                        
                                                                        TOTAL   DAILY   DAILY   FEET   SPACE  PERCENT  HISTORIC   
                                                            ELEVATION  STORAGE  INFLOW  OUTFLO   TO   TO FILL   FULL  DAILY AVE   
 SITE            RESERVOIR NAME                              (feet)    (ac-ft)  (cfs)   (cfs)   FILL  (ac-ft)    (%)     (%)      
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   Big Horn River Basin
 BLR      BULL LAKE RESERVOIR ON BULL LAKE CREEK, WYOMING    5761.67     40009                   43.33  112450    26      54        
 PBR      PILOT BUTTE OFFSTREAM, 22 MILES NW OF RIVERTON, WY 5454.58     28997      -8       0    5.42    4724    85     106        
 BOYR     BOYSEN RESERVOIR, THERMOPOLIS, WYOMING             4712.05    521678     739     593   12.95  219916    70      95        
 ANCR     ANCHOR RESERVOIR, SOUTH FORK OWL CREEK, WYOMING    6365.60       658      -5       0   75.40   16570     3     169        
 BBR      BUFFALO BILL RESERVOIR ON SHOSHONE RIVER, WYOMING  5359.20    394821     226     161   34.30  251744    61      89        
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MONTANA AREA OFFICE
 
   Big Horn River
 BHR      BIGHORN LAKE, MONTANA                              3621.44    826683    1655    1870   18.56  193890    81     103        
 BHSX     BIGHORN RIVER BELOW BIA CANAL, MT                  3186.58                      2032                            91        
 
   Upper Missouri River Basin
 LIMR     LIMA RES UPSTREAM OF CLARK CANYON RES, MONTANA     6572.26     35908       0       0   15.74   49117    42     111        
 CCR      CLARK CANYON RESERVOIR, BEAVERHEAD RVR NR DILLON,  5528.75     96807     167      34   17.35   77560    55      88        
 HEBR     HEBGEN LAKE NEAR WEST YELLOWSTONE, MONTANA         6529.09    315395     814     700    5.78   70786    81     103        
 CFR      CANYON FERRY LAKE NEAR HELENA, MONTANA             3783.86   1460528    3538    3385   13.14  431360    77     100        
 
   Sun River Basin
 GIBR     GIBSON RESERVOIR, MONTANA                          4682.08     50368     238     243   41.92   48319    51     235        
 PSHR     PISHKUN RESERVOIR NEAR AUGUSTA, MONTANA            4355.73     27877     -15       0   14.27   18817    59      96        
 WCR      WILLOW CREEK RESERVOIR, 6 MILES NW AUGUSTA, MONTAN 4118.38      6994      83       0   23.62   24854    21      29        
 
   Marias River Basin
 SWTR     SWIFT RESERVOIR, BIRCH CREEK, MONTANA              ******  NO DATA Within Lookback Period to 2025JUL26 ******             
 LER      LAKE ELWELL SPILLWAY TRANSDUCER, MONTANA           2983.46    759857     725     256    9.54  165792    82     105        
 
   Milk River Basin
 SHER     LAKE SHERBURNE, SWIFT CURRENT CREEK NEAR BABB, MT  4777.87     49755     129       0   10.13   16392    75     145        
 FRR      FRESNO RESERVOIR NEAR HAVRE, MONTANA               2555.48     28569      50      40   19.52   63177    31      79        
 NELR     NELSON RESERVOIR AT DAM 10 MILES NW OF SACO, MT    2215.11     53650     -17       0    6.49   25300    67     103