Extended Streamflow Prediction
Issued by NWS

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943
FGUS65 KSTR 051659
ESPWY
COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE SALT LAKE CITY UTAH


                      WATER SUPPLY INFORMATION FOR
                            SOUTHWEST WYOMING
                                 AS OF
                              May 4, 2016


PRECIPITATION AND SNOWPACK (% OF AVERAGE):

SUBBASIN                    APR      OCT-APR     MAY 1       APR
                          PRECIP     PRECIP      SNOW        FLOW
----------------------    ------     -------     -----     --------
GREEN ABV FLAMING GORGE     100        100         95        105
BEAR RIVER HEADWATERS        85        100         85        110

RESERVOIR STORAGE (KAF) AS OF April 30, 2016
Figures are in 1000 Acre Feet

                             C U R R E N T   Y R         L A S T   Y R    1981-2010
                          EOM      % of     % of       EOM      % of     APR 30        Usable
                          Storage  Average  Capacity   Storage  Average  Avg Storage   Capacity
------------------------------------------------------------------------------------------------
   GREEN - FONTENELLE RE|    173.5|    139|     50|      185.1|    148|      125.0|     344.8|
   BIG SANDY - BIG SANDY|     24.8|    117|     65|       26.5|    124|       21.3|      38.3|
   BLACKS FORK - MEEKS C|     14.3|     87|     48|       30.5|    185|       16.5|      29.9|
   EF SMITHS FORK - STAT|      7.7|    119|     56|       11.8|    182|        6.5|      13.9|
   GREEN - FLAMING GORGE|   3213.5|    106|     86|     3212.6|    106|     3040.4|    3749.0|

STREAMFLOW FORECASTS:

GREEN RIVER BASIN
                           Period     50%  %AVG    10%    30%    70%    90%    AVG
                           ------    ----  ----   ----   ----   ----   ----    ---
Green River
  Daniel, nr, Warren Brid  Apr-Jul    179    73    210    199    162    147    245
  Daniel, nr, Warren Brid  May-Jul    160    71    193    180    143    128    225
Pine Ck
  Fremont Lk, abv          Apr-Jul     76    78     97     84     69     58     98
  Fremont Lk, abv          May-Jul     73    76     94     81     66     55     96
New Fork River
  Big Piney, nr            Apr-Jul    230    65    335    275    210    164    355
  Big Piney, nr            May-Jul    210    64    315    255    191    143    330
Green River
  Fontenelle Res, Fontene  Apr-Jul    530    73    675    605    470    400    725
  Fontenelle Res, Fontene  May-Jul    440    69    585    515    380    310    640
Big Sandy River
  Farson, nr               Apr-Jul     41    79     56     46     37     31     52
  Farson, nr               May-Jul     38    79     53     43     34     28     48
Green River
  Green River, Wy, nr      Apr-Jul    525    72    705    610    470    395    730
  Green River, Wy, nr      May-Jul    430    67    610    515    375    300    640
EF Smiths Fork River
  Stateline Res, Robertso  Apr-Jul     25    96     30     27     23     22     26
  Stateline Res, Robertso  May-Jul     24    92     29     26     22     21     26
Blacks Fork River
  Robertson, nr            Apr-Jul     75    84     92     82     70     64     89
  Robertson, nr            May-Jul     70    82     87     77     65     59     85
Hams Fork River
  Frontier, nr, Pole Ck,   Apr-Jul     33    61     42     38     30     26     54
  Frontier, nr, Pole Ck,   May-Jul     25    52     34     30   22.0   18.0     48
  Viva Naughton Res        Apr-Jul     44    59     57     50     40     36     74
  Viva Naughton Res        May-Jul     29    47     42     35     25     21     62
Green River
  Flaming Gorge Res, Flam  Apr-Jul    770    79    980    905    680    615    980
  Flaming Gorge Res, Flam  May-Jul    630    75    840    765    540    475    845
Little Snake River
  Slater, nr               Apr-Jul    144    92    174    152    133    120    156
  Slater, nr               May-Jul    122    88    152    130    111     98    138
  Dixon, nr                Apr-Jul    310    90    365    330    280    250    345
  Dixon, nr                May-Jul    255    86    310    275    225    198    295

BEAR RIVER BASIN2
                           Period     50%  %AVG    10%    30%    70%    90%    AVG
                           ------    ----  ----   ----   ----   ----   ----    ---
Bear River
  Utah-Wyoming State Line  Apr-Jul     93    83    108     97     88     80    112
  Utah-Wyoming State Line  May-Jul     86    83    101     90     81     73    104
  Woodruff Narrows Rsvr,   Apr-Jul     76    63     91     81     69     63    121
  Woodruff Narrows Rsvr,   May-Jul     66    63     81     71     59     53    105
  Montpelier, nr, Stewart  Apr-Jul     82    45    107     92     78     69    182
  Montpelier, nr, Stewart  May-Jul     63    43     88     73     59     50    145
Smiths Fork River
  Border, nr               Apr-Jul     69    78     77     73     66     62     89
  Border, nr               May-Jul     58    72     66     62     55     51     80





50% Most probable volume in 1000 are-feet.
%AVG  Most probable volume in percent of the 1981-2010 average.
10% Volume that has a 10 percent chance of being exceeded.
30% Volume that has a 30 percent chance of being exceeded.
90% Volume that has a 90 percent chance of being exceeded.
70% Volume that has a 70 percent chance of being exceeded.
AVG   Average volume for the 1981-2010 period.

All forecast volumes reflect natural flow.  Actual observed flow may
be affected by upstream water management.

CBRFC/Nielson/Miller





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