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: 2026AUG17                                                                                        
                                                                        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    5790.54    109372     270     735   14.46   43087    71      97        
 PBR      PILOT BUTTE OFFSTREAM, 22 MILES NW OF RIVERTON, WY 5451.04     26084     504     524    8.96    7637    77     131        
 BOYR     BOYSEN RESERVOIR, THERMOPOLIS, WYOMING             4711.55    514488     465    1042   13.45  227106    69      88        
 ANCR     ANCHOR RESERVOIR, SOUTH FORK OWL CREEK, WYOMING    6368.90       845      12      10   72.10   16383     4     107        
 BBR      BUFFALO BILL RESERVOIR ON SHOSHONE RIVER, WYOMING  5380.11    542266     543    1896   13.39  104299    83      99        
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MONTANA AREA OFFICE
 
   Big Horn River
 BHR      BIGHORN LAKE, MONTANA                              3622.59    835017    2186    1335   17.41  185556    81      95        
 BHSX     BIGHORN RIVER BELOW BIA CANAL, MT                  3180.90                      1516                            57        
 
   Upper Missouri River Basin
 LIMR     LIMA RES UPSTREAM OF CLARK CANYON RES, MONTANA     6566.64     22144      39      18   21.36   62881    26      79        
 CCR      CLARK CANYON RESERVOIR, BEAVERHEAD RVR NR DILLON,  5514.51     52215     179     255   31.59  122152    29      71        
 HEBR     HEBGEN LAKE NEAR WEST YELLOWSTONE, MONTANA         6531.51    343556     848     789    3.36   42625    88      96        
 CFR      CANYON FERRY LAKE NEAR HELENA, MONTANA             3788.65   1608982    2172    3287    8.35  282906    85      95        
 
   Sun River Basin
 GIBR     GIBSON RESERVOIR, MONTANA                          4660.43     32414     288     820   63.57   66273    32     195        
 PSHR     PISHKUN RESERVOIR NEAR AUGUSTA, MONTANA            4369.75     46314     801     733    0.25     380    99     121        
 WCR      WILLOW CREEK RESERVOIR, 6 MILES NW AUGUSTA, MONTAN 4123.23     10437      59     119   18.77   21411    32      59        
 
   Marias River Basin
 SWTR     SWIFT RESERVOIR, BIRCH CREEK, MONTANA              ******  NO DATA Within Lookback Period to 2026JAN29 ******             
 LER      LAKE ELWELL SPILLWAY TRANSDUCER, MONTANA           2989.46    856599     226     738    3.54   69050    92     101        
 
   Milk River Basin
 SHER     LAKE SHERBURNE, SWIFT CURRENT CREEK NEAR BABB, MT  4771.09     40138     105     593   16.91   26009    60     109        
 FRR      FRESNO RESERVOIR NEAR HAVRE, MONTANA               2557.30     32198     608     954   17.70   59548    35      80        
 NELR     NELSON RESERVOIR AT DAM 10 MILES NW OF SACO, MT    2214.64     52020     224     224    6.96   26930    65      95