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: 2026OCT17                                                                                        
                                                                        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    5775.81     71059     315      25   29.19   81400    46     104        
 PBR      PILOT BUTTE OFFSTREAM, 22 MILES NW OF RIVERTON, WY 5453.63     28201       0       0    6.37    5520    83     125        
 BOYR     BOYSEN RESERVOIR, THERMOPOLIS, WYOMING             4711.15    508793    1469     399   13.85  232801    68      92        
 ANCR     ANCHOR RESERVOIR, SOUTH FORK OWL CREEK, WYOMING    6369.50       883       3       3   71.50   16345     5     193        
 BBR      BUFFALO BILL RESERVOIR ON SHOSHONE RIVER, WYOMING  5358.38    389641     433     692   35.12  256924    60      90        
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MONTANA AREA OFFICE
 
   Big Horn River
 BHR      BIGHORN LAKE, MONTANA                              3626.18    862893    1797    1425   13.82  157680    84      97        
 BHSX     BIGHORN RIVER BELOW BIA CANAL, MT                  3188.24                      1586                           122        
 
   Upper Missouri River Basin
 LIMR     LIMA RES UPSTREAM OF CLARK CANYON RES, MONTANA     6567.26     23473      22      11   20.74   61552    27      98        
 CCR      CLARK CANYON RESERVOIR, BEAVERHEAD RVR NR DILLON,  5516.88     58373     162      26   29.22  115994    33      80        
 HEBR     HEBGEN LAKE NEAR WEST YELLOWSTONE, MONTANA         6529.92    324781     648     707    4.95   61400    84      97        
 CFR      CANYON FERRY LAKE NEAR HELENA, MONTANA             3784.51   1480331    2576    3039   12.49  411557    78      96        
 
   Sun River Basin
 GIBR     GIBSON RESERVOIR, MONTANA                          4612.77      6380     208     264  111.23   92307     6      58        
 PSHR     PISHKUN RESERVOIR NEAR AUGUSTA, MONTANA            4349.24     21721       0       0   20.76   24973    46   2026OCT15    
 WCR      WILLOW CREEK RESERVOIR, 6 MILES NW AUGUSTA, MONTAN 4129.13     15834      71       0   12.87   16014    49      92        
 
   Marias River Basin
 SWTR     SWIFT RESERVOIR, BIRCH CREEK, MONTANA              ******  NO DATA Within Lookback Period to 2026MAR31 ******             
 LER      LAKE ELWELL SPILLWAY TRANSDUCER, MONTANA           2987.31    821033     187     516    5.69  104616    88     104        
 
   Milk River Basin
 SHER     LAKE SHERBURNE, SWIFT CURRENT CREEK NEAR BABB, MT  4744.81     12284      71       0   43.19   53863    18      66        
 FRR      FRESNO RESERVOIR NEAR HAVRE, MONTANA               2566.90     55953      29      44    8.10   35793    60     137        
 NELR     NELSON RESERVOIR AT DAM 10 MILES NW OF SACO, MT    2216.05     56997     -36       0    5.55   21953    72      96