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: 2026MAR28                                                                                        
                                                                        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    5762.88     42436     197      24   42.12  110023    27      57        
 PBR      PILOT BUTTE OFFSTREAM, 22 MILES NW OF RIVERTON, WY 5454.19     28669      -8       0    5.81    5052    85     103        
 BOYR     BOYSEN RESERVOIR, THERMOPOLIS, WYOMING             4712.77    532172    1391     578   12.23  209422    71      97        
 ANCR     ANCHOR RESERVOIR, SOUTH FORK OWL CREEK, WYOMING    6371.77      1037      14       1   69.23   16191     6     221        
 BBR      BUFFALO BILL RESERVOIR ON SHOSHONE RIVER, WYOMING  5364.22    427679    1541     161   29.28  218886    66      98        
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MONTANA AREA OFFICE
 
   Big Horn River
 BHR      BIGHORN LAKE, MONTANA                              3615.20    785579    1046    1665   24.80  234994    76     101        
 BHSX     BIGHORN RIVER BELOW BIA CANAL, MT                  3186.85                      1746                            99        
 
   Upper Missouri River Basin
 LIMR     LIMA RES UPSTREAM OF CLARK CANYON RES, MONTANA     6576.23     50771     252       2   11.77   34254    59     139        
 CCR      CLARK CANYON RESERVOIR, BEAVERHEAD RVR NR DILLON,  5531.33    106886      56      35   14.77   67481    61      88        
 HEBR     HEBGEN LAKE NEAR WEST YELLOWSTONE, MONTANA         6529.22    316870    1113     657    5.65   69311    82     107        
 CFR      CANYON FERRY LAKE NEAR HELENA, MONTANA             3784.45   1478496    3981    3057   12.55  413392    78     102        
 
   Sun River Basin
 GIBR     GIBSON RESERVOIR, MONTANA                          4708.85     79388    1343    1038   15.15   19299    80     291        
 PSHR     PISHKUN RESERVOIR NEAR AUGUSTA, MONTANA            4355.62     27762       0       0   14.38   18932    59      96        
 WCR      WILLOW CREEK RESERVOIR, 6 MILES NW AUGUSTA, MONTAN 4125.44     12300      88       0   16.56   19548    38      50        
 
   Marias River Basin
 SWTR     SWIFT RESERVOIR, BIRCH CREEK, MONTANA              ******  NO DATA Within Lookback Period to 2025SEP09 ******             
 LER      LAKE ELWELL SPILLWAY TRANSDUCER, MONTANA           2986.20    803078    2032     336    6.80  122571    86     111        
 
   Milk River Basin
 SHER     LAKE SHERBURNE, SWIFT CURRENT CREEK NEAR BABB, MT  4785.52     61939     211     499    2.48    4208    93     175        
 FRR      FRESNO RESERVOIR NEAR HAVRE, MONTANA               2557.08     31746     215      41   17.92   60000    34      69        
 NELR     NELSON RESERVOIR AT DAM 10 MILES NW OF SACO, MT    2215.46     54883      35       0    6.14   24067    69      99