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: 2026JUL07                                                                                        
                                                                        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    5791.34    111615     573     487   13.66   40844    73      84        
 PBR      PILOT BUTTE OFFSTREAM, 22 MILES NW OF RIVERTON, WY 5453.06     27729     773     632    6.94    5992    82      97        
 BOYR     BOYSEN RESERVOIR, THERMOPOLIS, WYOMING             4714.07    551518    1112    1191   10.93  190076    74      87        
 ANCR     ANCHOR RESERVOIR, SOUTH FORK OWL CREEK, WYOMING    6363.80       571      45      35   77.20   16657     3      23        
 BBR      BUFFALO BILL RESERVOIR ON SHOSHONE RIVER, WYOMING  5386.78    593312    2548    1852    6.72   53253    91      98        
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MONTANA AREA OFFICE
 
   Big Horn River
 BHR      BIGHORN LAKE, MONTANA                              3624.61    850335    1510    1824   15.39  170238    83      91        
 BHSX     BIGHORN RIVER BELOW BIA CANAL, MT                  3189.23                      1519                           110        
 
   Upper Missouri River Basin
 LIMR     LIMA RES UPSTREAM OF CLARK CANYON RES, MONTANA     6572.92     37991     276     464   15.08   47034    44   2026JUN30    
 CCR      CLARK CANYON RESERVOIR, BEAVERHEAD RVR NR DILLON,  5522.39     74687     176     241   23.71   99680    42      70        
 HEBR     HEBGEN LAKE NEAR WEST YELLOWSTONE, MONTANA         6534.58    382412     621     816    0.29    3769    99     100        
 CFR      CANYON FERRY LAKE NEAR HELENA, MONTANA             3791.19   1690093    4726    3257    5.81  201795    89      92        
 
   Sun River Basin
 GIBR     GIBSON RESERVOIR, MONTANA                          4723.71     98300    1021    1042    0.29     387    99     121        
 PSHR     PISHKUN RESERVOIR NEAR AUGUSTA, MONTANA            4369.46     45875     727     979    0.54     819    98     120        
 WCR      WILLOW CREEK RESERVOIR, 6 MILES NW AUGUSTA, MONTAN 4137.15     25181      45       0    4.85    6667    79      90        
 
   Marias River Basin
 SWTR     SWIFT RESERVOIR, BIRCH CREEK, MONTANA              ******  NO DATA Within Lookback Period to 2025DEC19 ******             
 LER      LAKE ELWELL SPILLWAY TRANSDUCER, MONTANA           2993.59    929041     838    1568   -0.59   -3392   100     104        
 
   Milk River Basin
 SHER     LAKE SHERBURNE, SWIFT CURRENT CREEK NEAR BABB, MT  4786.85     64182     324     273    1.15    1965    97     107        
 FRR      FRESNO RESERVOIR NEAR HAVRE, MONTANA               2569.29     63308     837      75    5.71   28438    69      98        
 NELR     NELSON RESERVOIR AT DAM 10 MILES NW OF SACO, MT    2215.00     53265     332       0    6.60   25685    67      81