Extended Streamflow Prediction
Issued by NWS

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FGUS65 KSTR 052206
ESPWY
COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE SALT LAKE CITY UTAH


                      WATER SUPPLY INFORMATION FOR
                            SOUTHWEST WYOMING
                                 AS OF
                              January 5, 2017


PRECIPITATION AND SNOWPACK (% OF AVERAGE):

SUBBASIN                    DEC      OCT-DEC     JAN 1       DEC
                          PRECIP     PRECIP      SNOW        FLOW
----------------------    ------     -------     -----     --------
GREEN ABV FLAMING GORGE     225        160        130         110
BEAR RIVER HEADWATERS       160        140        135         120

RESERVOIR STORAGE (KAF) AS OF DECEMBER  31, 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     DEC 31        Usable
                          Storage  Average  Capacity   Storage  Average  Avg Storage   Capacity
---------------------------------------------------------------------------------------------
   GREEN - FONTENELLE RE|    203.2|    116|     59| 197.5|    113|     175.3|     344.8|
   BIG SANDY - BIG SANDY|     22.0|    142|     57|  19.4|    125|      15.5|38.3|
   BLACKS FORK - MEEKS C|      9.7|     94|     33|   5.6|     54|      10.3|29.9|
   EF SMITHS FORK - STAT|      6.0|    104|     43|   5.7|     99|       5.8|13.9|
   GREEN - FLAMING GORGE|   3130.4|    101|     83|3225.3|    104|    3094.9|    3749.0|

STREAMFLOW FORECASTS:

GREEN RIVER BASIN
                           Period     50%  %AVG    10%    30%    70%    90%    AVG
                           ------    ----  ----   ----   ----   ----   ----    ---
Green River
  Daniel, nr, Warren Brid  Apr-Jul    305   124    405    340    255    210    245
Pine Ck
  Fremont Lk, abv          Apr-Jul    110   112    138    121     97     87     98
New Fork River
  Big Piney, nr            Apr-Jul    430   121    590    495    370    305    355
Green River
  Fontenelle Res, Fontene  Apr-Jul    930   128   1370   1080    770    590    725
Big Sandy River
  Farson, nr               Apr-Jul     62   119     89     70     54     41     52
Green River
  Green River, Wy, nr      Apr-Jul    945   129   1420   1120    785    595    730
EF Smiths Fork River
  Stateline Res, Robertso  Apr-Jul     27   104     39     32   23.0   19.2     26
Blacks Fork River
  Robertson, nr            Apr-Jul     94   106    134    112     83     60     89
Hams Fork River
  Frontier, nr, Pole Ck,   Apr-Jul     59   109     93     72     45     36     54
  Viva Naughton Res        Apr-Jul     82   111    141    107     63     48     74
Green River
  Flaming Gorge Res, Flam  Apr-Jul   1230   126   1990   1440   1020    780    980
Little Snake River
  Slater, nr               Apr-Jul    145    93    194    170    100     71    156
  Dixon, nr                Apr-Jul    300    87    445    350    205    141    345

Bear River Basin
                           Period     50%  %AVG    10%    30%    70%    90%    AVG
                           ------    ----  ----   ----   ----   ----   ----    ---
Bear River
  Utah-Wyoming State Line  Apr-Jul    128   114    166    141    111     83    112
  Woodruff Narrows Rsvr,   Apr-Jul    133   110    215    159    114     75    121
  Montpelier, nr, Stewart  Apr-Jul    290   159    465    350    220    155    182
Smiths Fork River
  Border, nr               Apr-Jul    109   122    145    122     91     74     89

50% Most probable volume in 1000 acre-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,Bernard




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