Extended Streamflow Prediction
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000
FGUS65 KSTR 032125
ESPWY
COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE SALT LAKE CITY UTAH


                      WATER SUPPLY INFORMATION FOR
                            SOUTHWEST WYOMING
                                 AS OF
                            June 3, 2015


PRECIPITATION AND SNOWPACK (% OF AVERAGE):

SUBBASIN                    MAY      OCT-MAY     JUN 1       MAY
                          PRECIP     PRECIP      SNOW        FLOW
----------------------    ------     -------     -----     --------
GREEN ABV FLAMING GORGE     250        110        105         135
BEAR RIVER HEADWATERS       205         95         50          80

RESERVOIR STORAGE (KAF) AS OF May 31,2015
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     MAY 31        Usable
                          Storage  Average  Capacity   Storage  Average  Avg Storage   Capacity
------------------------------------------------------------------------------------------------
   GREEN - FONTENELLE RE|    297.8|    182|     86|186.4|    114|     164.0|      344.8|
   BIG SANDY - BIG SANDY|     35.0|    119|     91| 24.3|     83|      29.4|       38.3|
   BLACKS FORK - MEEKS C|     30.3|    122|    102| 30.4|    122|      24.9|       29.9|
   EF SMITHS FORK - STAT|     14.0|    124|    101| 14.2|    126|      11.3|       13.9|
   GREEN - FLAMING GORGE|   3197.7|    104|     85|    3185.0|    104|    3071.5|     3749.0|

STREAMFLOW FORECASTS:

GREEN RIVER BASIN
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Green River
  Daniel, nr, Warren Bridge, at   Apr-Jul    220    90    255    190    245
  Daniel, nr, Warren Bridge, at   Jun-Jul    145    86    180    115    168
Pine Ck
  Fremont Lk, abv                 Apr-Jul     81    83     98     66     98
  Fremont Lk, abv                 Jun-Jul     61    80     78     46     76
New Fork River
  Big Piney, nr                   Apr-Jul    260    73    305    220    355
  Big Piney, nr                   Jun-Jul    175    69    220    133    255
Green River
  Fontenelle Res, Fontenelle nr   Apr-Jul    675    93    810    590    725
  Fontenelle Res, Fontenelle nr   Jun-Jul    365    77    500    280    475
Big Sandy River
  Farson, nr                      Apr-Jul     42    81     50     36     52
  Farson, nr                      Jun-Jul     23    68     31   17.0     34
Green River
  Green River, Wy, nr             Apr-Jul    680    93    815    595    730
  Green River, Wy, nr             Jun-Jul    375    78    510    290    480
EF Smiths Fork River
  Stateline Res, Robertson,nr     Apr-Jul     22    85     25     20     26
  Stateline Res, Robertson,nr     Jun-Jul   13.3    75   16.5   11.6   17.8
Blacks Fork River
  Robertson, nr                   Apr-Jul     68    76     81     59     89
  Robertson, nr                   Jun-Jul     39    66     52     30     59
Hams Fork River
  Frontier, nr, Pole Ck, blo      Apr-Jul     53    98     60     50     54
  Frontier, nr, Pole Ck, blo      Jun-Jul   16.0    62     23   13.1     26
  Viva Naughton Res               Apr-Jul     62    84     70     58     74
  Viva Naughton Res               Jun-Jul   18.3    59     27   14.5     31
Green River
  Flaming Gorge Res, Flaming Gor  Apr-Jul    910    93   1060    805    980
  Flaming Gorge Res, Flaming Gor  Jun-Jul    465    78    615    360    600
Little Snake River
  Slater, nr                      Apr-Jul    117    75    131    109    156
  Slater, nr                      Jun-Jul     37    56     51     29     66
  Dixon, nr                       Apr-Jul    181    52    210    161    345
  Dixon, nr                       Jun-Jul     65    48     95     45    135

BEAR RIVER BASIN
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Bear River
  Utah-Wyoming State Line, nr     Apr-Jul     74    66     81     71    112
  Utah-Wyoming State Line, nr     Jun-Jul     41    62     48     38     66
  Woodruff Narrows Rsvr, abv      Apr-Jul     56    46     63     54    121
  Woodruff Narrows Rsvr, abv      Jun-Jul     25    44     32     23     57
  Montpelier, nr, Stewart Dam, b  Apr-Jul     67    37     78     63    182
  Montpelier, nr, Stewart Dam, b  Jun-Jul     41    45     52     37     91
Smiths Fork River
  Border, nr                      Apr-Jul     84    94     88     82     89
  Border, nr                      Jun-Jul     39    78     43     37     50

MP    Most probable volume in 1000 acre-feet.
MP%   Most probable volume in percent of the 1981-2010 average.
RMAX  Volume that has a 10 percent chance of being exceeded.
RMIN  Volume that has a 90 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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