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: 2026JUL28                                                                                        
                                                                        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    5796.49    126463     587     468    8.51   25996    82      97        
 PBR      PILOT BUTTE OFFSTREAM, 22 MILES NW OF RIVERTON, WY 5454.16     28644     823     668    5.84    5077    84     121        
 BOYR     BOYSEN RESERVOIR, THERMOPOLIS, WYOMING             4712.92    534376     930    1006   12.08  207218    72      88        
 ANCR     ANCHOR RESERVOIR, SOUTH FORK OWL CREEK, WYOMING    6371.29      1003      22      47   69.71   16225     5      67        
 BBR      BUFFALO BILL RESERVOIR ON SHOSHONE RIVER, WYOMING  5386.83    593556    1027    1936    6.67   53009    91     100        
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MONTANA AREA OFFICE
 
   Big Horn River
 BHR      BIGHORN LAKE, MONTANA                              3623.38    840903    1595    1444   16.62  179670    82      93        
 BHSX     BIGHORN RIVER BELOW BIA CANAL, MT                  3186.91                      1518                            88        
 
   Upper Missouri River Basin
 LIMR     LIMA RES UPSTREAM OF CLARK CANYON RES, MONTANA     6566.46     21766      42      42   21.54   63259    25      65        
 CCR      CLARK CANYON RESERVOIR, BEAVERHEAD RVR NR DILLON,  5518.49     62853     200     475   27.61  111514    36      72        
 HEBR     HEBGEN LAKE NEAR WEST YELLOWSTONE, MONTANA         6532.98    361733     599    1440    1.89   24448    93      98        
 CFR      CANYON FERRY LAKE NEAR HELENA, MONTANA             3790.55   1669420    1582    3365    6.45  222468    88      94        
 
   Sun River Basin
 GIBR     GIBSON RESERVOIR, MONTANA                          4700.01     69048     408    1362   23.99   29639    69     162        
 PSHR     PISHKUN RESERVOIR NEAR AUGUSTA, MONTANA            4364.48     38656    1305    1325    5.52    8038    82     108        
 WCR      WILLOW CREEK RESERVOIR, 6 MILES NW AUGUSTA, MONTAN 4130.45     17215       4     216   11.55   14633    54      78        
 
   Marias River Basin
 SWTR     SWIFT RESERVOIR, BIRCH CREEK, MONTANA              ******  NO DATA Within Lookback Period to 2026JAN09 ******             
 LER      LAKE ELWELL SPILLWAY TRANSDUCER, MONTANA           2991.31    888413     857    1387    1.69   37236    95     102        
 
   Milk River Basin
 SHER     LAKE SHERBURNE, SWIFT CURRENT CREEK NEAR BABB, MT  4784.13     59633     142     550    3.87    6514    90     114        
 FRR      FRESNO RESERVOIR NEAR HAVRE, MONTANA               2566.22     53962     498     968    8.78   37784    58     110        
 NELR     NELSON RESERVOIR AT DAM 10 MILES NW OF SACO, MT    2217.00     60493      -9     217    4.60   18457    76     105