Extended Streamflow Prediction
Issued by NWS Missouri Basin, Pleasant Hill

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FGUS63 KKRF 141840
ESPKRF

ESPKRF

MISSOURI  BASIN RIVER  FORECAST  CENTER
WATER  SUPPLY  STATEMENT
ISSUED IN COOPERATION WITH NATURAL RESOURCES CONSERVATION SERVICE
ISSUED:  JUNE 14, 2016

CORRECTED FOR ISSUE DATE



UPPER MISSOURI BASIN

THE HIGH ELEVATION SNOW PACK IN THE UPPER MISSOURI BASIN AS OF
JUNE 1 WAS BELOW AVERAGE.  THE SNOW PACK ABOVE TOSTON,  MONTANA
WAS 84 PERCENT OF AVERAGE.  THE SNOW PACK BETWEEN TOSTON AND FORT
PECK, MONTANA WAS 79 PERCENT.  THE SNOW PACK IN THE ST MARY AND
MILK RIVER BASINS WAS 94 PERCENT.

MAY PRECIPITATION ACROSS THE UPPER MISSOURI BASIN RANGED FROM NEAR
TO ABOVE AVERAGE.  BASIN PRECIPITATION SUMMARIES FOR THE MISSOURI BASIN
INCLUDE: MILK ST. MARY, 143 PERCENT; MILK CANADA, 146 PERCENT;
LOWER MILK, 163 PERCENT; ABOVE TOSTON, 99 PERCENT; TOSTON TO
FT. PECK, 128 PERCENT.

STREAM FLOW IN THE UPPER MISSOURI BASIN IS FORECAST TO BE NEAR
AVERAGE DURING THE UPCOMING SPRING AND SUMMER.  THE ST. MARY
RIVER IS FORECAST TO HAVE 83 PERCENT OF AVERAGE JUNE-SEPTEMBER
FLOWS.  RUNOFF IS EXPECTED TO RANGE AROUND 74 PERCENT OF AVERAGE
FOR THE MISSOURI BASIN ABOVE FORT PECK, MONTANA.

OF THE FOUR MAJOR IRRIGATION RESERVOIRS IN MONTANA:  LIMA RESERVOIR
HAD 128 PERCENT AVERAGE STORAGE, CLARK CANYON WAS HOLDING 88 PERCENT
OF AVERAGE WATER, GIBSON RESERVOIR HAD 110 PERCENT OF AVERAGE STORED
WATER, AND FRESNO RESERVOIR HAD 132 PERCENT OF AVERAGE STORED WATER.
THE  MAJOR  HYDROELECTRIC  RESERVOIRS  IN  MONTANA (CANYON  FERRY AND
FORT PECK) HAD MONTHEND STORAGE IN THE NEAR AVERAGE RANGE; 109 AND 115
PERCENT OF AVERAGE WATER, RESPECTIVELY.

YELLOWSTONE BASIN

THE HIGH ELEVATION SNOW PACK IN THE YELLOWSTONE BASIN WAS NEAR
AVERAGE ON JUNE 1.  THE SNOW PACK IN THE UPPER YELLOWSTONE
BASIN WAS 60 PERCENT OF AVERAGE OVERALL.  THE SNOW PACKS IN THE WIND,
BIGHORN, AND SHOSHONE BASINS WERE 131, 70, AND 73 PERCENT OF AVERAGE,
RESPECTIVELY.  THE SNOW PACKS IN THE TONGUE AND POWDER BASINS WERE
69 AND 135 PERCENT OF AVERAGE, RESPECTIVELY.

PRECIPITATION IN THE YELLOWSTONE BASIN DURING MAY WAS NEAR TO ABOVE
AVERAGE.  THE UPPER YELLOWSTONE RIVER BASIN RECEIVED 91 PERCENT OF
AVERAGE PRECIPITATION WHILE THE LOWER YELLOWSTONE BASIN REPORTED
112 PERCENT OF AVERAGE.  THE BIGHORN BASIN RECEIVED 93 PERCENT OF AVERAGE
PRECIPITATION WHILE THE WIND RIVER BASIN RECEIVED 150 PERCENT OF AVERAGE.
THE LITTLE BIGHORN - UPPER TONGUE BASIN RECEIVED 84 PERCENT OF AVERAGE
AND THE POWDER RIVER HAD 66 PERCENT OF AVERAGE PRECIPITATION.

FORECAST STREAM FLOW IN THE YELLOWSTONE BASIN IS ABOVE TO BELOW AVERAGE
FOR THE UPCOMING SPRING AND SUMMER.  STREAM FLOW FOR THE WIND-BIGHORN
BASIN ABOVE ST. XAVIER, MONTANA IS FORECAST TO BE ABOUT 140 PERCENT OF
AVERAGE.  FLOW IN THE TONGUE BASIN IS EXPECTED TO BE ABOUT 65 PERCENT
OF AVERAGE.  FLOWS IN THE POWDER RIVER ARE EXPECTED TO BE ABOUT 79
PERCENT OF AVERAGE.

MONTHEND STORAGE AT BOYSEN RESERVOIR WAS 121 PERCENT OF AVERAGE.
STORED WATER IN BUFFALO BILL RESERVOIR WAS 132 PERCENT OF AVERAGE.
MONTHEND STORAGE WAS 100 PERCENT OF AVERAGE AT BIGHORN RESERVOIR.

PLATTE BASIN

THE HIGH ELEVATION  SNOW PACK IN THE UPPER NORTH PLATTE BASIN WAS
161 PERCENT OF AVERAGE ON JUNE 1.  THE SNOW PACK IN THE NORTH
PLATTE  BASIN BELOW SEMINOE RESERVOIR WAS 181 PERCENT OF AVERAGE.
THE SNOW PACK IN THE SOUTH PLATTE BASIN WAS 166 PERCENT OF AVERAGE.

MAY PRECIPITATION ACROSS THE PLATTE BASIN WAS ABOVE AVERAGE.
PRECIPITATION DURING MAY IN THE UPPER NORTH PLATTE BASIN ABOVE SEMINOE
RESERVOIR WAS 127 PERCENT OF AVERAGE. IN THE LOWER NORTH PLATTE BASIN BETWEEN
SEMINOE RESERVOIR AND GUERNSY RESERVOIR PRECIPITATION WAS 110 PERCENT
OF AVERAGE. THE NORTH PLATTE PLAINS BELOW GUERNSY RESERVOIR HAD 105 PERCENT
OF AVERAGE PRECIPITATION.  THE SOUTH PLATTE MOUNTAINS HAD 85 PERCENT OF
AVERAGE PRECIPITATION WHEREAS THE SOUTH PLATTE PLAINS HAD 128 PERCENT OF
AVERAGE MAY PRECIPITATION.

STREAM FLOW IN THE PLATTE BASIN IS FORECAST TO BE ABOVE AVERAGE
DURING THE UPCOMING SPRING AND SUMMER. RUNOFF FOR STREAMS
ABOVE SEMINOE RESERVOIR ARE EXPECTED TO BE ABOUT 128 PERCENT
OF AVERAGE.  STREAM FLOWS FOR THE NORTH PLATTE BELOW SEMINOE
RESERVOIR ARE FORECAST TO BE 145 PERCENT OF AVERAGE. STREAMS
IN THE SOUTH PLATTE BASIN ABOVE SOUTH PLATTE, COLORADO CAN EXPECT
120 PERCENT OF AVERAGE FLOW. FOR THE REMAINDER OF THE SOUTH
PLATTE BASIN FLOWS ARE EXPECTED NEAR 115 PERCENT OF AVERAGE.

STORED WATER IN THE SOUTH PLATTE BASIN WAS 112 PERCENT OF AVERAGE
ON JUNE 1.  STORED WATER IN THE NORTH PLATTE BASIN WAS 140 PERCENT OF
AVERAGE




DISSEMINATED WITH PERMISSION OF THE
US NATURAL RESOURCES CONSERVATION SERVICE

DATA CURRENT AS OF: JUNE 06, 2016
BASED ON JUN 01 2016 FORECAST VALUES


PRELIMINARY MISSOURI/YELLOWSTONE/PLATTE RIVER BASIN FORECASTS
                                            50%  % OF MAX   MIN 30-YR
FORECAST POINT                       PERIOD (KAF) AVG (KAF)(KAF) AVG
--------------                       ------ ----- ---- ----- --------
ST. MARY R NR BABB (2)               JUN-JUL  195  83  245   144  235
                                     JUN-SEP  245  83  305   188  295
LIMA RESERVOIR INFLOW (2)            JUN-JUL   20  6534   6.3   31
                                     JUN-SEP   25  6443   7.4   39
CLARK CANYON RESERVOIR INFLOW (2)    JUN-JUL   21  6065   -23   35
                                     JUN-SEP   34  6284 -16.4   55
BEAVERHEAD R AT BARRETTS (2)         JUN-JUL   36  73  100 -13.0   49
                                     JUN-SEP   56  75  138  -9.0   75
BIG HOLE R NR MELROSE                JUN-JUL  250  93  360   138  270
                                     JUN-SEP  290  92  425   154  315
RUBY R RESERVOIR INFLOW (2)          JUN-JUL   35  8550    20   41
                                     JUN-SEP   49  8867    31   56
HEBGEN RESERVOIR INFLOW (2)          JUN-JUL  126  71  169    83  178
                                     JUN-SEP  210  75  260   158  280
ENNIS RESERVOIR INFLOW (2)           JUN-JUL  260  79  325   193  330
                                     JUN-SEP  395  81  480   310  485
GALLATIN R NR GATEWAY                JUN-JUL  200  78  260   142  255
                                     JUN-SEP  255  80  325   184  320
GALLATIN R AT LOGAN                  JUN-JUL  191  78  280   102  245
                                     JUN-SEP  245  79  365   131  310
MISSOURI R AT TOSTON (2)             JUN-JUL  725  77 1090   360  940
                                     JUN-SEP  970  80 1480   465 1220
MISSOURI R AT FORT BENTON (2)        JUN-JUL 1010  72 1610   415 1410
                                     JUN-SEP 1440  76 2220   655 1900
MISSOURI R NR VIRGELLE (2)           JUN-JUL 1110  69 1740   470 1600
                                     JUN-SEP 1550  73 2370   725 2120
MISSOURI R NR LANDUSKY (2)           JUN-JUL 1170  68 1810   540 1710
                                     JUN-SEP 1650  73 2490   810 2260
MISSOURI R BLW FT PECK DAM (2)       JUN-JUL 1110  65 1910   320 1710
                                     JUN-SEP 1460  67 2610   315 2170
LAKE SAKAKAWEA INFLOW (2)            JUN-JUL 3930  78 5860  2000 5060
                                     JUN-SEP 4800  78 7650  1950 6150
SHEEP CK NR WHITE SULPHUR SPRINGS    JUN-JUL  7.8  96 11.5   4.1  8.1
                                     JUN-SEP 10.5  96 15.5   5.5 10.9
GIBSON RESERVOIR INFLOW (2)          JUN-JUL  115  55  169    61  210
                                     JUN-SEP  150  60  210    92  250
MARIAS R NR SHELBY (2)               JUN-JUL   65  45  175 -15.0  143
                                     JUN-SEP   76  48  200 -15.0  158
NF MUSSELSHELL R NR DELPINE          JUN-JUL 1.80  90  4.6 0.100  2.0
                                     JUN-SEP  2.5  89  4.9 0.100  2.8
SF MUSSELSHELL R AB MARTINSDALE      JUN-JUL 15.4  7734  1.00   20
                                     JUN-SEP 17.7  7738  1.00   23
MUSSELSHELL R AT HARLOWTON (2)       JUN-JUL   21  7565  -9.0   28
                                     JUN-SEP   23  7767  -7.0   30
YELLOWSTONE R AT YELLOWSTONE LAKE    JUN-JUL  375  81  450   300  465
                                     JUN-SEP  525  80  635   415  655
YELLOWSTONE R AT CORWIN SPRINGS      JUN-JUL  805  77 1010   600 1040
                                     JUN-SEP 1040  78 1310   765 1330
YELLOWSTONE R AT LIVINGSTON          JUN-JUL  920  78 1170   670 1180
                                     JUN-SEP 1190  78 1520   865 1520
YELLOWSTONE R AT BILLINGS            JUN-JUL 1630  75 2200  1050 2170
                                     JUN-SEP 2020  76 2790  1240 2660
YELLOWSTONE R AT MILES CITY (2)      JUN-JUL 2750  86 3630  1870 3200
                                     JUN-SEP 3320  86 4570  2080 3870
YELLOWSTONE R NR SIDNEY (2)          JUN-JUL 2760  85 3790  1720 3240
                                     JUN-SEP 3240  84 4700  1780 3840
BOULDER R AT BIG TIMBER              JUN-JUL  135  68  180    89  200
                                     JUN-SEP  148  66  205    91  225
STILLWATER R NR ABSAROKEE (2)        JUN-JUL  250  77  315   188  325
                                     JUN-SEP  315  79  405   225  400
CLARKS FK YELLOWSTONE R NR BELFRY    JUN-JUL  270  77  335   205  350
                                     JUN-SEP  305  77  390   220  395
BOYSEN RESERVOIR INFLOW (2)          JUN-JUL  635 149  820   450  425
                                     JUN-SEP  705 145  935   475  485
BIGHORN R AT KANE (2)                JUN-JUL  765 134 1010   525  570
                                     JUN-SEP  860 137 1160   560  630
BIGHORN R NR ST. XAVIER (2)          JUN-JUL 1090 118 1400   785  920
                                     JUN-SEP 1220 121 1620   815 1010
GREYBULL R NR MEETEETSE              JUN-JUL  113 118  138    88   96
                                     JUN-SEP  164 115  197   131  142
SHELL CK NR SHELL                    JUN-JUL   21  6031  11.5   35
                                     JUN-SEP   30  6541  18.6   46
BUFFALO BILL RESERVOIR INFLOW (2)    JUN-JUL  440  95  545   335  465
                                     JUN-SEP  510  95  640   380  535
LITTLE BIGHORN R NR HARDIN           JUN-JUL   32  6061   3.3   53
                                     JUN-SEP   42  6476   8.0   66
TONGUE R NR DAYTON (2)               JUN-JUL   30  6146  14.0   49
                                     JUN-SEP   41  6660    22   62
TONGUE RIVER RESERVOIR INFLOW (2)    JUN-JUL   63  57  107  18.0  110
                                     JUN-SEP   81  60  137    25  134
ROCK CK NR BUFFALO                   JUN-JUL 10.5  93 14.8   6.2 11.3
                                     JUN-SEP 14.1  94 19.3   9.0 15.0
NF POWDER R NR HAZELTON              JUN-JUL  2.7  60  4.9  0.56  4.5
                                     JUN-SEP  3.4  65  5.8  0.97  5.2
POWDER R AT MOORHEAD                 JUN-JUL   67  73  121  12.2   92
                                     JUN-SEP   87  79  153    21  110
POWDER R NR LOCATE                   JUN-JUL   74  73  146   2.3  101
                                     JUN-SEP   95  78  186   4.3  122


UPPER NORTH PLATTE RIVER BASIN
                                       50%   % OF MAX  MIN 30-YR
FORECAST POINT                      PERIOD (KAF)  AVG (KAF)(KAF) AVG
--------------                      ------ ----- ---- --------  -----
NORTH PLATTE R NR NORTHGATE          JUN-JUL  157  128  200 113  123
                                     JUN-SEP  186  127  240 132  146
ENCAMPMENT R NR ENCAMPMENT           JUN-JUL  105  140  130  80   75
                                     JUN-SEP  115  137  142  88   84
ROCK CK NR ARLINGTON                 JUN-JUL   42  13149  35    32
                                     JUN-SEP   45  12953  37    35
SEMINOE RESERVOIR INFLOW (2)         JUN-JUL  545  140  690 400  390
                                     JUN-SEP  620  139  795 445  445


LOWER NORTH PLATTE, SWEETWATER & LARAMIE RIVER BASINS
                                           50%  % OF MA    M   30-YR
FORECAST POINT                     PERIOD (KAF)  AVG KAF  (KA   AVG
--------------                     ------ ----- ---- ---- ---- -----
SWEETWATER R NR ALCOVA             JUN-JUL  32  123   44    20   26
                                   JUN-SEP  37  119   51    23   31
LA PRELE CK AB LA PRELE RESERVOIR  JUN-JUL 5.2  116  9.4  0.98  4.5
                                   JUN-SEP 5.5  115  9.6  1.37  4.8
NORTH PLATTE R BL GLENDO RES (2)   JUN-JUL 525  140  635   415  375
                                   JUN-SEP 575  142  695   455  405
NORTH PLATTE R BL GUERNSEY RES (2) JUN-JUL 550  149  685   420  370
                                   JUN-SEP 615  154  760   465  400
LARAMIE R NR WOODS                 JUN-JUL  98  138  120    76   71
                                   JUN-SEP 112  137  137    87   82
LITTLE LARAMIE R NR FILMORE        JUN-JUL  45  129   54    36   35
                                   JUN-SEP  50  128   61    39   39


SOUTH PLATTE RIVER BASIN
                                            50%  % OF MAX  MIN  30-YR
FORECAST POINT                      PERIOD (KAF) AVG (KAF) (KAF) AVG
--------------                      ------  ---- ---- ---- ---- ----
ANTERO RESERVOIR INFLOW             APR-JUL 16.3  112 18.7 13.9 14.5
                                    APR-SEP   20  112   24 16.5 17.8
                                    JUN-JUL 11.1  111 13.5  8.7 10.0
                                    JUN-SEP 14.8  112 18.8 11.3 13.2
SPINNEY MOUNTAIN RES INFLOW (2)     APR-JUL   54  113   72   39   48
                                    APR-SEP   69  113   96   47   61
                                    JUN-JUL   42  124   60   27   34
                                    JUN-SEP   57  124   84   35   46
ELEVENMILE CANYON RES INFLOW (2)    APR-JUL   56  112   74   41   50
                                    APR-SEP   72  113  101   49   64
                                    JUN-JUL   43  123   61   28   35
                                    JUN-SEP   59  123   88   36   48
CHEESMAN LAKE INFLOW (2)            APR-JUL  118  118  153   89  100
                                    APR-SEP  150  119  205  106  126
                                    JUN-JUL   79  130  114   50   61
                                    JUN-SEP  111  126  166   67   88
SOUTH PLATTE R AT SOUTH PLATTE (2)  APR-JUL  215  119  265  169  180
                                    APR-SEP  265  118  350  197  225
                                    JUN-JUL  122  115  176   78  106
                                    JUN-SEP  174  114  260  106  153
BEAR CK AB EVERGREEN                APR-JUL   31  189   36   27 16.4
                                    APR-SEP   37  176   44   31   21
                                    JUN-JUL 11.1  126 16.2  7.0  8.8
                                    JUN-SEP 17.0  126   24 11.1 13.5
CLEAR CK AT GOLDEN                  APR-JUL  121  115  144  101  105
                                    APR-SEP  146  114  177  119  128
                                    JUN-JUL   80  105  103   60   76
                                    JUN-SEP  105  105  136   78  100
ST. VRAIN CK AT LYONS (2)           APR-JUL   91  103  105   78   88
                                    APR-SEP  108  105  127   91  103
                                    JUN-JUL   61  105   75   48   58
                                    JUN-SEP   78  107   97   61   73
BOULDER CK NR ORODELL (2)           APR-JUL   58  107   66   51   54
                                    APR-SEP   68  108   78   59   63
                                    JUN-JUL   44  122   52   37   36
                                    JUN-SEP   54  120   64   45   45
S BOULDER CK NR ELDORADO SPRINGS(2) APR-JUL   43  110   57   32   39
                                    APR-SEP   48  112   65   35   43
                                    JUN-JUL   26  113   40 15.0   23
                                    JUN-SEP   31  115   48 17.5   27
BIG THOMPSON R AT CANYON MOUTH (2)  APR-JUL   94  104  111   78   90
                                    APR-SEP  113  106  136   92  107
                                    JUN-JUL   69  110   86   53   63
                                    JUN-SEP   88  110  111   67   80
CACHE LA POUDRE AT CANYON MOUTH (2) APR-JUL  300  133  350  255  225
                                    APR-SEP  320  128  385  270  250
                                    JUN-JUL  155  108  205  111  143
                                    JUN-SEP  178  108  240  127  165

 MAX (10%), 30%, 50%, 70% AND MIN (90%) CHANCE THAT ACTUAL VOLUME
 WILL EXCEED FORECAST.

 AVERAGES ARE FOR THE 1981-2010 PERIOD.
 ALL VOLUMES ARE IN THOUSANDS OF ACRE-FEET.

 FOOTNOTES:
 1) MAX AND MIN ARE 5% AND 95% CHANCE THAT ACTUAL VOLUME WILL
    EXCEED FORECAST
 2) STREAMFLOW IS ADJUSTED FOR UPSTREAM STORAGE
 3) MEDIAN VALUE USED IN PLACE OF AVERAGE






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