Extended Streamflow Prediction
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FGUS65 KSTR 031729
ESPWY
COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE SALT LAKE CITY UTAH


                      WATER SUPPLY INFORMATION FOR
                            SOUTHWEST WYOMING
                                 AS OF
                              February 3, 2017


PRECIPITATION AND SNOWPACK (% OF AVERAGE):

SUBBASIN                    JAN      OCT-JAN     FEB 1       JAN
                          PRECIP     PRECIP      SNOW        FLOW
----------------------    ------     -------     -----     --------
GREEN ABV FLAMING GORGE     205        170        155         130
BEAR RIVER HEADWATERS       230        165        165         110

RESERVOIR STORAGE (KAF) AS OF JANUARY 31, 2017
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     JAN 31        Usable
                          Storage  Average  Capacity   Storage  Average  Avg Storage   Capacity
---------------------------------------------------------------------------------------------
   GREEN - FONTENELLE RE|    184.2|    123|     53|170.0|    113|      150.1|     344.8|
   BIG SANDY - BIG SANDY|     23.5|    142|     61| 19.7|    119|       16.6|38.3|
   BLACKS FORK - MEEKS C|     11.2|     97|     38|  7.0|     60|       11.5|29.9|
   EF SMITHS FORK - STAT|      6.4|    114|     46|  6.0|    107|        5.6|13.9|
   GREEN - FLAMING GORGE|   3087.3|    101|     82|    3162.8|    104|     3050.5|    3749.0|

STREAMFLOW FORECASTS:

GREEN RIVER BASIN
                           Period     50%  %AVG    10%    30%    70%    90%    AVG
                           ------    ----  ----   ----   ----   ----   ----    ---
Green River
  Daniel, nr, Warren Brid  Apr-Jul    380   155    440    395    320    270    245
Pine Ck
  Fremont Lk, abv          Apr-Jul    132   135    152    136    115    103     98
New Fork River
  Big Piney, nr            Apr-Jul    560   158    695    625    490    425    355
Green River
  Fontenelle Res, Fontene  Apr-Jul   1200   166   1600   1350   1100    915    725
Big Sandy River
  Farson, nr               Apr-Jul     75   144     95     82     69     55     52
Green River
  Green River, Wy, nr      Apr-Jul   1230   168   1680   1400   1160    965    730
EF Smiths Fork River
  Stateline Res, Robertso  Apr-Jul     32   123     43     38     30     27     26
Blacks Fork River
  Robertson, nr            Apr-Jul    110   124    155    124     96     86     89
Hams Fork River
  Frontier, nr, Pole Ck,   Apr-Jul     80   148    116     94     72     60     54
  Viva Naughton Res        Apr-Jul    114   154    172    134     99     83     74
Green River
  Flaming Gorge Res, Flam  Apr-Jul   1650   168   2360   1830   1460   1240    980
Little Snake River
  Slater, nr               Apr-Jul    175   112    230    195    150    123    156
  Dixon, nr                Apr-Jul    360   104    530    445    305    240    345

Bear River Basin
                           Period     50%  %AVG    10%    30%    70%    90%    AVG
                           ------    ----  ----   ----   ----   ----   ----    ---
Bear River
  Utah-Wyoming State Line  Apr-Jul    160   143    195    177    144    129    112
  Woodruff Narrows Rsvr,   Apr-Jul    177   146    275    215    156    121    121
  Montpelier, nr, Stewart  Apr-Jul    410   225    625    480    360    295    182
Smiths Fork River
  Border, nr               Apr-Jul    134   151    173    142    121    108     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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