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: 2026JUN17                                                                                        
                                                                        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    5783.57     90525     792     292   21.43   61934    59      77        
 PBR      PILOT BUTTE OFFSTREAM, 22 MILES NW OF RIVERTON, WY 5449.04     24498     718     659   10.96    9223    72      89        
 BOYR     BOYSEN RESERVOIR, THERMOPOLIS, WYOMING             4713.79    547309    1000    1000   11.21  194285    73      90        
 ANCR     ANCHOR RESERVOIR, SOUTH FORK OWL CREEK, WYOMING    6370.74       965      78      71   70.26   16263     5      39        
 BBR      BUFFALO BILL RESERVOIR ON SHOSHONE RIVER, WYOMING  5380.95    548573    4694    1956   12.55   97992    84      99        
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MONTANA AREA OFFICE
 
   Big Horn River
 BHR      BIGHORN LAKE, MONTANA                              3623.12    838952    1967    1740   16.88  181621    82      94        
 BHSX     BIGHORN RIVER BELOW BIA CANAL, MT                  3187.64                      1520                            95        
 
   Upper Missouri River Basin
 LIMR     LIMA RES UPSTREAM OF CLARK CANYON RES, MONTANA     6575.36     47240     112     476   12.64   37785    55      85        
 CCR      CLARK CANYON RESERVOIR, BEAVERHEAD RVR NR DILLON,  5524.27     80857     121     580   21.83   93510    46      69        
 HEBR     HEBGEN LAKE NEAR WEST YELLOWSTONE, MONTANA         6534.63    383060     705     772    0.24    3121    99     102        
 CFR      CANYON FERRY LAKE NEAR HELENA, MONTANA             3790.09   1654681    2846    3329    6.91  237207    87      92        
 
   Sun River Basin
 GIBR     GIBSON RESERVOIR, MONTANA                          4723.83     98460    1799    1631    0.17     227    99     104        
 PSHR     PISHKUN RESERVOIR NEAR AUGUSTA, MONTANA            4368.40     44290    1272    1452    1.60    2404    94     102        
 WCR      WILLOW CREEK RESERVOIR, 6 MILES NW AUGUSTA, MONTAN 4137.48     25611      77      11    4.52    6237    80      86        
 
   Marias River Basin
 SWTR     SWIFT RESERVOIR, BIRCH CREEK, MONTANA              ******  NO DATA Within Lookback Period to 2025NOV29 ******             
 LER      LAKE ELWELL SPILLWAY TRANSDUCER, MONTANA           2992.55    910336     624     713    0.45   15313    98     105        
 
   Milk River Basin
 SHER     LAKE SHERBURNE, SWIFT CURRENT CREEK NEAR BABB, MT  4788.00     66146     562     397    0.00       1    99     120        
 FRR      FRESNO RESERVOIR NEAR HAVRE, MONTANA               2560.77     39826     605     476   14.23   51920    43      61        
 NELR     NELSON RESERVOIR AT DAM 10 MILES NW OF SACO, MT    2211.00     40861     206     206   10.60   38089    51      66