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: 2026SEP12                                                                                        
                                                                        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)    (%)     (%)      
_______________________________________________________________________________________________________________________________   
 
 
   Big Horn River Basin
 BLR      BULL LAKE RESERVOIR ON BULL LAKE CREEK, WYOMING    5779.80     80860     127     904   25.20   71599    53     101        
 PBR      PILOT BUTTE OFFSTREAM, 22 MILES NW OF RIVERTON, WY 5449.50     24859     477     572   10.50    8862    73     162        
 BOYR     BOYSEN RESERVOIR, THERMOPOLIS, WYOMING             4709.89    491179     628     907   15.11  250415    66      88        
 ANCR     ANCHOR RESERVOIR, SOUTH FORK OWL CREEK, WYOMING    6369.53       885       3       4   71.47   16343     5     189        
 BBR      BUFFALO BILL RESERVOIR ON SHOSHONE RIVER, WYOMING  5370.35    470487     297    1746   23.15  176078    72      97        
-------------------------------------------------------------------------------------------------------------------------------   
MONTANA AREA OFFICE
 
   Big Horn River
 BHR      BIGHORN LAKE, MONTANA                              3622.96    837757    1898    2048   17.04  182816    82      97        
 BHSX     BIGHORN RIVER BELOW BIA CANAL, MT                  3188.31                      1703                           110        
 
   Upper Missouri River Basin
 LIMR     LIMA RES UPSTREAM OF CLARK CANYON RES, MONTANA     6566.80     22481      26      15   21.20   62544    26      97        
 CCR      CLARK CANYON RESERVOIR, BEAVERHEAD RVR NR DILLON,  5514.12     51249     113      50   31.98  123118    29      76        
 HEBR     HEBGEN LAKE NEAR WEST YELLOWSTONE, MONTANA         6530.67    333525     405     759    4.20   52656    86      97        
 CFR      CANYON FERRY LAKE NEAR HELENA, MONTANA             3786.01   1526488    2032    3283   10.99  365400    80      96        
 
   Sun River Basin
 GIBR     GIBSON RESERVOIR, MONTANA                          4618.64      8716     357     121  105.36   89971     8      90        
 PSHR     PISHKUN RESERVOIR NEAR AUGUSTA, MONTANA            4360.73     33645     123     704    9.27   13049    72     110        
 WCR      WILLOW CREEK RESERVOIR, 6 MILES NW AUGUSTA, MONTAN 4123.92     10998      82       0   18.08   20850    34      70        
 
   Marias River Basin
 SWTR     SWIFT RESERVOIR, BIRCH CREEK, MONTANA              ******  NO DATA Within Lookback Period to 2026FEB24 ******             
 LER      LAKE ELWELL SPILLWAY TRANSDUCER, MONTANA           2988.31    837430     342     509    4.69   88219    90     102        
 
   Milk River Basin
 SHER     LAKE SHERBURNE, SWIFT CURRENT CREEK NEAR BABB, MT  4747.98     15021     231     626   40.02   51126    22      74        
 FRR      FRESNO RESERVOIR NEAR HAVRE, MONTANA               2560.84     39990     681      74   14.16   51756    43     106        
 NELR     NELSON RESERVOIR AT DAM 10 MILES NW OF SACO, MT    2216.43     58381     147       0    5.17   20569    73     104