Extended Streamflow Prediction
Issued by NWS

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346
FGUS65 KSTR 062044
ESPWY
COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE SALT LAKE CITY UTAH


                      WATER SUPPLY INFORMATION FOR
                            SOUTHWEST WYOMING
                                 AS OF
                            June 6, 2017


PRECIPITATION AND SNOWPACK (% OF AVERAGE):

SUBBASIN                    MAY      OCT-MAY    MAY
                          PRECIP     PRECIP    FLOW
----------------------    ------     -------   --------
GREEN ABV FLAMING GORGE      55        150      250
BEAR RIVER HEADWATERS        50        155    190

RESERVOIR STORAGE (KAF) AS OF MAY 31, 2017
Figures are in 1000 Acre Feet
                            C U R R E N T   Y R              L A S T   Y R
                           Usable     EOM Usable % of       EOM Usable   % of
                           Capacity   Contents   Capacity   Contents     Capacity
----------------------------------------------------------------------------------
   GREEN - FONTENELLE RE|      344.8|       129.5|     38|251.9|        73|
   BIG SANDY - BIG SANDY|       38.3|        38.4|    100| 34.0|        89|
   BLACKS FORK - MEEKS C|       29.9|        28.8|     96| 25.2|        84|
   EF SMITHS FORK - STAT|       13.9|        14.1|    102| 11.9|        86|
   GREEN - FLAMING GORGE|     3749.0|      3202.9|     85|     3427.2|        91|

STREAMFLOW FORECASTS:
GREEN BASIN
                           Period     50%  %AVG    10%    30%    70%    90%    AVG
                           ------    ----  ----   ----   ----   ----   ----    ---
Green River
  Daniel, nr, Warren Brid  Apr-Jul    430   176    465    445    410    395    245
  Daniel, nr, Warren Brid  Jun-Jul    285   170    320    300    265    250    168
Pine Ck
  Fremont Lk, abv          Apr-Jul    148   151    161    152    143    136     98
  Fremont Lk, abv          Jun-Jul    123   162    136    127    118    111     76
New Fork River
  Big Piney, nr            Apr-Jul    670   189    730    710    620    600    355
  Big Piney, nr            Jun-Jul    480   188    540    520    430    410    255
Green River
  Fontenelle Res, Fontene  Apr-Jul   1680   232   1820   1730   1620   1540    725
  Fontenelle Res, Fontene  Jun-Jul   1030   217   1170   1080    965    890    475
Big Sandy River
  Farson, nr               Apr-Jul     81   156     88     84     76     72     52
  Farson, nr               Jun-Jul     55   162     62     58     50     46     34
Green River
  Green River, Wy, nr      Apr-Jul   1710   234   1860   1780   1650   1580    730
  Green River, Wy, nr      Jun-Jul   1050   219   1200   1120    995    920    480
EF Smiths Fork River
  Stateline Res, Robertso  Apr-Jul     37   142     41     39     35     33     26
  Stateline Res, Robertso  Jun-Jul     21   118     25     23   18.5   17.0   17.8
Blacks Fork River
  Robertson, nr            Apr-Jul    114   128    125    119    107    102     89
  Robertson, nr            Jun-Jul     65   110     76     70     58     53     59
Hams Fork River
  Frontier, nr, Pole Ck,   Apr-Jul    113   209    124    117    109    105     54
  Frontier, nr, Pole Ck,   Jun-Jul     42   162     53     46     38     34     26
  Viva Naughton Res        Apr-Jul    161   218    173    165    155    150     74
  Viva Naughton Res        Jun-Jul     52   168     64     56     46     41     31
Green River
  Flaming Gorge Res, Flam  Apr-Jul   2180   222   2380   2260   2060   1950    980
  Flaming Gorge Res, Flam  Jun-Jul   1250   208   1450   1330   1130   1020    600
Little Snake River
  Slater, nr               Apr-Jul    132    85    148    139    125    118    156
  Slater, nr               Jun-Jul     47    71     63     54     40     33     66
  Dixon, nr                Apr-Jul    255    74    290    270    240    235    345
  Dixon, nr                Jun-Jul     92    68    127    108     79     71    135

BEAR RIVER BASIN
                           Period     50%  %AVG    10%    30%    70%    90%    AVG
                           ------    ----  ----   ----   ----   ----   ----    ---
Bear River
  Utah-Wyoming State Line  Apr-Jul    169   151    184    174    164    159    112
  Utah-Wyoming State Line  Jun-Jul     95   144    110    100     90     85     66
  Woodruff Narrows Rsvr,   Apr-Jul    185   153    205    192    180    170    121
  Woodruff Narrows Rsvr,   Jun-Jul     77   135     95     84     72     62     57
  Montpelier, nr, Stewart  Apr-Jul    505   277    570    535    475    460    182
  Montpelier, nr, Stewart  Jun-Jul    182   200    245    210    152    137     91
Smiths Fork River
  Border, nr               Apr-Jul    166   187    177    169    162    154     89
  Border, nr               Jun-Jul     82   164     93     85     78     70     50


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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