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: 2025DEC15                                                                                        
                                                                        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    5760.26     37230      56      37   44.74  115229    24      51        
 PBR      PILOT BUTTE OFFSTREAM, 22 MILES NW OF RIVERTON, WY 5455.01     29360      -4       0    4.99    4361    87     110        
 BOYR     BOYSEN RESERVOIR, THERMOPOLIS, WYOMING             4711.97    520528     819     599   13.03  221066    70      93        
 ANCR     ANCHOR RESERVOIR, SOUTH FORK OWL CREEK, WYOMING    6363.90       575       2       0   77.10   16653     3     147        
 BBR      BUFFALO BILL RESERVOIR ON SHOSHONE RIVER, WYOMING  5355.86    373490     496     151   37.64  273075    57      84        
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MONTANA AREA OFFICE
 
   Big Horn River
 BHR      BIGHORN LAKE, MONTANA                              3630.36    899808    1548    1979    9.64  120765    88     104        
 BHSX     BIGHORN RIVER BELOW BIA CANAL, MT                  3186.69                      2066                            96        
 
   Upper Missouri River Basin
 LIMR     LIMA RES UPSTREAM OF CLARK CANYON RES, MONTANA     6567.41     23801      12      13   20.59   61224    27   2025OCT27    
 CCR      CLARK CANYON RESERVOIR, BEAVERHEAD RVR NR DILLON,  5523.72     79021     169      35   22.38   95346    45      84        
 HEBR     HEBGEN LAKE NEAR WEST YELLOWSTONE, MONTANA         6529.18    316417     381     665    5.69   69764    81      98        
 CFR      CANYON FERRY LAKE NEAR HELENA, MONTANA             3783.92   1462345    3904    2988   13.08  429543    77      95        
 
   Sun River Basin
 GIBR     GIBSON RESERVOIR, MONTANA                          4649.22     24894     923     144   74.78   73793    25     147        
 PSHR     PISHKUN RESERVOIR NEAR AUGUSTA, MONTANA            4356.02     28182       0       0   13.98   18512    60      97        
 WCR      WILLOW CREEK RESERVOIR, 6 MILES NW AUGUSTA, MONTAN 4112.57      4034      14       0   29.43   27814    12      17        
 
   Marias River Basin
 SWTR     SWIFT RESERVOIR, BIRCH CREEK, MONTANA              ******  NO DATA Within Lookback Period to 2025MAY29 ******             
 LER      LAKE ELWELL SPILLWAY TRANSDUCER, MONTANA           2980.08    710532    1369     252   12.92  215117    76      94        
 
   Milk River Basin
 SHER     LAKE SHERBURNE, SWIFT CURRENT CREEK NEAR BABB, MT  4781.86     55952     425       0    6.14   10195    84     193        
 FRR      FRESNO RESERVOIR NEAR HAVRE, MONTANA               2556.59     30752      10      40   18.41   60994    33      78        
 NELR     NELSON RESERVOIR AT DAM 10 MILES NW OF SACO, MT    2215.81     56132      18       0    5.79   22818    71     102