Extended Streamflow Prediction
Issued by NWS Missouri Basin, Pleasant Hill

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FGUS63 KKRF 101922
ESPKRF

MISSOURI  BASIN RIVER  FORECAST  CENTER
WATER  SUPPLY  STATEMENT
ISSUED IN COOPERATION WITH NATURAL RESOURCES CONSERVATION SERVICE
ISSUED:  MARCH 10, 2015


UPPER MISSOURI BASIN

THE HIGH ELEVATION SNOW PACK IN THE UPPER MISSOURI BASIN AS OF
MARCH 1 WAS NEAR TO  ABOVE AVERAGE.  THE SNOW PACK ABOVE TOSTON,  MONTANA
WAS 112 PERCENT OF AVERAGE.  THE SNOW PACK BETWEEN TOSTON AND FORT
PECK, MONTANA WAS 99 PERCENT.  THE SNOW PACK IN THE ST MARY AND
MILK RIVER BASINS WAS 65 PERCENT.

FEBRUARY PRECIPITATION ACROSS THE UPPER MISSOURI BASIN RANGED FROM BELOW
TO ABOVE AVERAGE.  BASIN PRECIPITATION SUMMARIES FOR THE MISSOURI BASIN
INCLUDE: MILK ST. MARY,  101 PERCENT; MILK CANADA, 72 PERCENT;
LOWER MILK, 187 PERCENT; ABOVE TOSTON, 80 PERCENT; TOSTON TO
FT. PECK, 105 PERCENT.

STREAM FLOW IN THE UPPER MISSOURI BASIN IS FORECAST TO BE BELOW
AVERAGE DURING THE UPCOMING SPRING AND SUMMER.  THE ST. MARY
RIVER IS FORECAST TO HAVE 81 PERCENT OF AVERAGE APRIL-SEPTEMBER
FLOWS.  RUNOFF IS EXPECTED TO RANGE AROUND 82 PERCENT OF AVERAGE
FOR THE MISSOURI BASIN ABOVE FORT PECK, MONTANA.

OF THE FOUR MAJOR IRRIGATION RESERVOIRS IN MONTANA:  LIMA RESERVOIR
HAD 120 PERCENT AVERAGE STORAGE, CLARK CANYON WAS HOLDING 86 PERCENT
OF AVERAGE WATER, GIBSON RESERVOIR HAD 57 PERCENT OF AVERAGE STORED
WATER, AND FRESNO RESERVOIR HAD 193 PERCENT OF AVERAGE STORED WATER.
THE  MAJOR  HYDROELECTRIC  RESERVOIRS  IN  MONTANA (CANYON  FERRY AND
FORT PECK) HAD MONTHEND STORAGE IN THE ABOVE AVERAGE RANGE; 103 AND
119 PERCENT OF AVERAGE WATER, RESPECTIVELY.

YELLOWSTONE BASIN

THE HIGH ELEVATION SNOW PACK IN THE YELLOWSTONE BASIN WAS ABOVE
AVERAGE ON MARCH 1.  THE SNOW PACK IN THE UPPER YELLOWSTONE
BASIN WAS 106 PERCENT OF AVERAGE OVERALL.  THE SNOW PACKS IN THE WIND,
BIGHORN, AND SHOSHONE BASINS WERE 101, 111, AND 103 PERCENT OF AVERAGE,
RESPECTIVELY.  THE SNOW PACKS IN THE TONGUE AND POWDER BASINS WERE
104 AND 126 PERCENT OF AVERAGE, RESPECTIVELY.

PRECIPITATION DURING FEBRUARY WAS NEAR TO ABOVE AVERAGE.  THE UPPER
YELLOWSTONE RIVER BASIN RECEIVED 109 PERCENT OF AVERAGE PRECIPITATION
WHILE THE LOWER YELLOWSTONE BASIN REPORTED 83 PERCENT OF AVERAGE.
THE BIGHORN BASIN RECEIVED 160 PERCENT OF AVERAGE PRECIPITATION WHILE
THE WIND RIVER BASIN RECEIVED 206 PERCENT OF AVERAGE. THE LITTLE
BIGHORN - UPPER TONGUE BASIN RECEIVED 142 PERCENT OF AVERAGE
AND THE POWDER RIVER HAD 141 PERCENT OF AVERAGE PRECIPITATION.

FORECAST STREAM FLOW IN THE YELLOWSTONE BASIN IS NEAR AVERAGE
FOR THE UPCOMING SPRING AND SUMMER.  STREAM FLOW FOR THE WIND-BIGHORN
BASIN ABOVE ST. XAVIER, MONTANA IS FORECAST TO BE ABOUT 98 PERCENT OF
AVERAGE.  FLOW IN THE TONGUE BASIN IS EXPECTED TO BE ABOUT 101 PERCENT
OF AVERAGE.  FLOWS IN THE POWDER RIVER ARE EXPECTED TO BE ABOUT 110
PERCENT OF AVERAGE.

MONTHEND STORAGE AT BOYSEN RESERVOIR WAS 126 PERCENT OF AVERAGE.
STORED WATER IN BUFFALO BILL RESERVOIR WAS 132 PERCENT OF AVERAGE.
MONTHEND STORAGE WAS 111 PERCENT OF AVERAGE AT BIGHORN RESERVOIR.

PLATTE BASIN

THE HIGH ELEVATION  SNOW PACK IN THE UPPER NORTH PLATTE BASIN WAS
80 PERCENT OF AVERAGE ON MARCH 1.  THE SNOW PACK IN THE NORTH
PLATTE  BASIN BELOW SEMINOE RESERVOIR WAS 84 PERCENT OF AVERAGE.
THE SNOW PACK IN THE SOUTH PLATTE BASIN WAS 110 PERCENT OF AVERAGE.

FEBRUARY PRECIPITATION ACROSS THE PLATTE BASIN WAS ABOVE AVERAGE.
PRECIPITATION DURING FEBRUARY IN THE NORTH PLATTE BASIN ABOVE SEMINOE
RESERVOIR WAS 84 PERCENT OF AVERAGE. IN THE NORTH PLATTE BASIN BETWEEN
SEMINOE RESERVOIR AND GUERNSY RESERVOIR PRECIPITATION WAS 122 PERCENT
OF AVERAGE. THE NORTH PLATTE BASIN BELOW GUERNSY RESERVOIR HAD 152 PERCENT
OF AVERAGE PRECIPITATION.  THE HIGH ELEVATIONS OF THE SOUTH PLATTE
BASIN HAD 251 PERCENT OF AVERAGE PRECIPITATION WHEREAS THE PLAINS HAD
194 PERCENT OF AVERAGE FEBRUARY PRECIPITATION.

STREAM FLOW IN THE PLATTE BASIN IS FORECAST TO BE BELOW TO NEAR AVERAGE
DURING THE UPCOMING SPRING AND SUMMER. RUNOFF FOR STREAMS
ABOVE SEMINOE RESERVOIR ARE EXPECTED TO BE ABOUT 70 PERCENT
OF AVERAGE.  STREAM FLOWS FOR THE NORTH PLATTE BELOW SEMINOE
RESERVOIR ARE FORECAST TO BE 55 PERCENT OF AVERAGE. STREAMS
IN THE SOUTH PLATTE BASIN ABOVE SOUTH PLATTE, COLORADO CAN EXPECT
90 PERCENT OF AVERAGE FLOW. FOR THE REMAINDER OF THE SOUTH
PLATTE BASIN FLOWS ARE EXPECTED NEAR 100 PERCENT OF AVERAGE.

STORED WATER IN THE SOUTH PLATTE BASIN WAS 117 PERCENT OF AVERAGE
ON MARCH 1.  STORED WATER IN THE NORTH PLATTE BASIN WAS 128
PERCENT OF AVERAGE




WATER SUPPLY FORECAST
NWS MISSOURI BASIN RIVER FORECAST CENTER PLEASANT HILL MO
1202 PM CDT MON MAR 9 2015

DISSEMINATED WITH PERMISSION OF THE
US NATURAL RESOURCES CONSERVATION SERVICE

DATA CURRENT AS OF: MARCH 05 2015
BASED ON MARCH 1 2015 FORECAST VALUES


FINAL 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)            APR-JUL  290  78   360   225  370
                                  APR-SEP  345  81   415   270  425
LIMA RESERVOIR INFLOW (2)         APR-JUL   41  50    77   8.6   82
                                  APR-SEP   43  48    84   2.4   89
CLARK CANYON RESERVOIR INFLOW (2) APR-JUL   54  53   139 -15.0  101
                                  APR-SEP   67  56   160  -4.0  120
BEAVERHEAD R AT BARRETTS (2)      APR-JUL   82  64   191  17.9  129
                                  APR-SEP  102  65   230    28  156
BIG HOLE R NR MELROSE             APR-JUL  590 115   795   385  515
                                  APR-SEP  635 113   860   410  560
RUBY R RESERVOIR INFLOW (2)       APR-JUL   46  60    75  17.7   77
                                  APR-SEP   57  63    90    25   91
HEBGEN RESERVOIR INFLOW (2)       APR-JUL  295  80   360   230  370
                                  APR-SEP  375  80   455   295  470
ENNIS RESERVOIR INFLOW (2)        APR-JUL  465  74   605   325  625
                                  APR-SEP  580  75   745   420  775
GALLATIN R NR GATEWAY             APR-JUL  355  89   455   255  400
                                  APR-SEP  415  88   530   300  470
GALLATIN R AT LOGAN               APR-JUL  395  90   565   225  440
                                  APR-SEP  455  90   650   255  505
MISSOURI R AT TOSTON (2)          APR-JUL 1480  83  2170   780 1790
                                  APR-SEP 1690  82  2510   880 2070
MISSOURI R AT FORT BENTON (2)     APR-JUL 2150  82  3160  1120 2610
                                  APR-SEP 2550  82  3760  1330 3110
MISSOURI R NR VIRGELLE (2)        APR-JUL 2490  83  3660  1300 3000
                                  APR-SEP 2890  82  4300  1490 3520
MISSOURI R NR LANDUSKY (2)        APR-JUL 2620  83  3830  1390 3160
                                  APR-SEP 3050  82  4510  1590 3720
MISSOURI R BL FT PECK DAM (2)     APR-JUL 2630  81  3960  1280 3240
                                  APR-SEP 2920  79  4600  1240 3700
LAKE SAKAKAWEA INFLOW (2)         APR-JUL 7820  94 10900  4720 8310
                                  APR-SEP 8730  93 12600  4890 9400
SHEEP CK NR WHITE SULPHUR SPRINGS APR-JUL 18.7 121    24  13.0 15.5
                                  APR-SEP   22 120    29  15.2 18.4
GIBSON RESERVOIR INFLOW (2)       APR-JUL  360  91   460   255  395
                                  APR-SEP  395  90   510   285  440
MARIAS R NR SHELBY (2)            APR-JUL  310  90   490   131  345
                                  APR-SEP  315  88   505   123  360
NF MUSSELSHELL R NR DELPINE       APR-JUL  4.0 118   6.0   2.0  3.4
                                  APR-SEP  4.7 118   7.0   2.5  4.0
SF MUSSELSHELL R AB MARTINSDALE   APR-JUL   33  94    59   7.2   35
                                  APR-SEP   36  95    64   8.5   38
MUSSELSHELL R AT HARLOWTON (2)    APR-JUL   60 105   118  1.47   57
                                  APR-SEP   62 105   124  1.50   59
MILK R AT WESTERN CROSSING        MAR-SEP   34 104    62  16.2   33*
MILK R AT EASTERN CROSSING        MAR-SEP   78  96   152    45   82*
YELLOWSTONE R AT YELLOWSTONE LAKE APR-JUL  505  88   620   390  575
                                  APR-SEP  665  86   815   515  770
YELLOWSTONE R AT CORWIN SPRINGS   APR-JUL 1600 101  1910  1290 1590
                                  APR-SEP 1880 100  2250  1510 1880
YELLOWSTONE R AT LIVINGSTON       APR-JUL 1830 102  2210  1440 1800
                                  APR-SEP 2150 100  2610  1690 2140
YELLOWSTONE R AT BILLINGS         APR-JUL 3380 105  4320  2440 3230
                                  APR-SEP 3870 104  4990  2760 3730
YELLOWSTONE R AT MILES CITY (2)   APR-JUL 4950 104  6560  3350 4780
                                  APR-SEP 5630 103  7540  3720 5450
YELLOWSTONE R NR SIDNEY (2)       APR-JUL 5040 104  6880  3200 4830
                                  APR-SEP 5640 104  7830  3450 5430
BOULDER R AT BIG TIMBER           APR-JUL  295 105   370   220  280
                                  APR-SEP  320 107   405   235  300
STILLWATER R NR ABSAROKEE (2)     APR-JUL  460 103   565   355  445
                                  APR-SEP  540 104   665   415  520
CLARKS FK YELLOWSTONE R NR BELFRY APR-JUL  595 117   695   495  510
                                  APR-SEP  650 118   760   540  550
BOYSEN RESERVOIR INFLOW (2)       APR-JUL  515  84   900   129  610
                                  APR-SEP  565  85  1000   137  665
BIGHORN R AT KANE (2)             APR-JUL  810  96  1330   290  840
                                  APR-SEP  875  97  1440   310  905
BIGHORN R NR ST. XAVIER (2)       APR-JUL 1380 100  2020   750 1380
                                  APR-SEP 1480 101  2190   765 1460
GREYBULL R NR MEETEETSE           APR-JUL  148 113   186   111  131
                                  APR-SEP  200 113   250   154  177
SHELL CK NR SHELL                 APR-JUL   55 100    71    40   55
                                  APR-SEP   67 102    84    50   66
BUFFALO BILL RESERVOIR INFLOW (2) APR-JUL  705 104   860   545  675
                                  APR-SEP  780 105   955   605  745
LITTLE BIGHORN R NR HARDIN        APR-JUL  100 102   147    53   98
                                  APR-SEP  113 102   165    61  111
TONGUE R NR DAYTON (2)            APR-JUL   88 102   119    57   86
                                  APR-SEP  100 102   134    66   98
TONGUE RIVER RESERVOIR INFLOW (2) APR-JUL  195 101   305    85  193
                                  APR-SEP  220 102   335   102  215
ROCK CK NR BUFFALO                APR-JUL 18.7 101    26  11.0 18.6
                                  APR-SEP   22 100    31  14.2   22
NF POWDER R NR HAZELTON           APR-JUL 10.6 116  13.8   7.4  9.1
                                  APR-SEP 11.4 115  14.7   8.1  9.9
POWDER R AT MOORHEAD              APR-JUL  189 107   305    75  177
                                  APR-SEP  210 107   330    92  196
POWDER R NR LOCATE                APR-JUL  215 108   350    79  199
                                  APR-SEP  235 107   380    93  220

UPPER NORTH PLATTE RIVER BASIN
                                          50% % OF  MAX   MIN 30-YR
FORECAST POINT                    PERIOD (KAF) AVG (KAF) (KAF) AVG
--------------                    ------ --------- ----- ----------
NORTH PLATTE R NR NORTHGATE       APR-JUL  158  70   270    47  225
                                  APR-SEP  175  70   300    50  250
ENCAMPMENT R NR ENCAMPMENT        APR-JUL   70  54   112    28  129
                                  APR-SEP   75  54   120    31  138
ROCK CK NR ARLINGTON              APR-JUL   42  86    57    26   49
                                  APR-SEP   44  85    61    27   52
SEMINOE RESERVOIR INFLOW (2)      APR-JUL  480  67   905    57  715
                                  APR-SEP  515  67   980    52  770

LOWER NORTH PLATTE, SWEETWATER & LARAMIE RIVER BASINS
                                          50% % OF  MAX   MIN 30-YR
FORECAST POINT                    PERIOD (KAF) AVG (KAF) (KAF) AVG
--------------                    ------ --------- ----- ----------
SWEETWATER R NR ALCOVA            APR-JUL   29  49    58   6.5   59
                                  APR-SEP   33  52    65   7.0   64
LA PRELE CK AB LA PRELE RESERVOIR APR-JUL  8.2  41    27  0.56 19.9
                                  APR-SEP  8.2  41    27  0.56 19.9
NORTH PLATTE R BL GLENDO RES (2)  APR-JUL  495  60   760   230  820
                                  APR-SEP  495  58   775   220  850
NORTH PLATTE R BL GUERNSEY R (2)  APR-JUL  495  60   820   166  820
                                  APR-SEP  505  59   845   167  850
LARAMIE R NR WOODS                APR-JUL   89  77   124    54  115
                                  APR-SEP   98  78   137    59  126
LITTLE LARAMIE R NR FILMORE       APR-JUL   35  69    55  15.7   51
                                  APR-SEP   38  69    60  16.0   55


SOUTH PLATTE RIVER BASIN
                                          50% % OF  MAX   MIN 30-YR
FORECAST POINT                    PERIOD (KAF) AVG (KAF) (KAF) AVG
--------------                    ------ --------- ----- ----------
ANTERO RESERVOIR INFLOW           APR-JUL 13.6  94  19.5   7.7 14.5
                                  APR-SEP 16.8  94    24  10.0 17.8
SPINNEY MOUNTAIN RES INFLOW (2)   APR-JUL   49 102    93    25   48
                                  APR-SEP   61 100   122    30   61
ELEVENMILE CANYON RES INFLOW (2)  APR-JUL   50 100   100    25   50
                                  APR-SEP   64 100   135    30   64
CHEESMAN LAKE INFLOW (2)          APR-JUL  103 103   215    49  100
                                  APR-SEP  129 102   275    60  126
SOUTH PLATTE R AT S PLATTE (2)    APR-JUL  174  97   370    81  180
                                  APR-SEP  220  98   475   101  225
BEAR CK AB EVERGREEN              APR-JUL 16.4 100    38   7.1 16.4
                                  APR-SEP   21 100    46   9.3   21
CLEAR CK AT GOLDEN                APR-JUL  105 100   136    73  105
                                  APR-SEP  127  99   169    84  128
ST. VRAIN CK AT LYONS (2)         APR-JUL   94 107   115    73   88
                                  APR-SEP  110 107   135    85  103
BOULDER CK NR ORODELL (2)         APR-JUL   55 102    66    44   54
                                  APR-SEP   64 102    78    50   63
S BOULDER CK NR ELDORADO SPRS(2)  APR-JUL   40 103    48    31   39
                                  APR-SEP   44 102    54    33   43
BIG THOMPSON R AT CANYON MTH (2)  APR-JUL   92 102   115    68   90
                                  APR-SEP  110 103   138    82  107
CACHE LA POUDRE AT CANYON MTH (2) APR-JUL  220  98   300   141  225
                                  APR-SEP  240  96   330   151  250

 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

* MILK RIVER MEDIANS ARE FOR YEARS 1980-2008




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