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000
FGUS65 KSTR 031758
ESPWY
COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE SALT LAKE CITY UTAH


                      WATER SUPPLY INFORMATION FOR
                            SOUTHWEST WYOMING
                                 AS OF
                              May 3, 2013


PRECIPITATION AND SNOWPACK (% OF AVERAGE):

SUBBASIN                    APR      OCT-APR     May 1       APR
                          PRECIP     PRECIP      SNOW        FLOW
----------------------    ------     -------     -----     --------

GREEN ABV FLAMING GORGE     115         85         90          55
BEAR RIVER HEADWATERS       135         95         80          50

RESERVOIR STORAGE (KAF) AS OF APRIL  30, 2013

                            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|    128.1|    102|     37|      160.1|    128|     125.0|     344.8|
   BIG SANDY - BIG SANDY|     11.2|     53|     29|       30.0|    141|      21.3|      38.3|
   BLACKS FORK - MEEKS C|     10.1|     62|     34|       29.5|    179|      16.5|      29.9|
   EF SMITHS FORK - STAT|      5.2|     80|     38|       10.4|    160|       6.5|      13.9|
   GREEN - FLAMING GORGE|   3001.9|     99|     80|     3205.1|    105|    3040.4|    3749.0|


STREAMFLOW FORECASTS:

GREEN RIVER BASIN
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Green River
  Daniel, nr, Warren Bridge, at   Apr-Jul    171    70    200    126    245
  Daniel, nr, Warren Bridge, at   May-Jul    160    71    190    115    225
Pine Ck
  Fremont Lk, abv                 Apr-Jul     62    63     82     47     98
  Fremont Lk, abv                 May-Jul     61    64     81     46     96
New Fork River
  Big Piney, nr                   Apr-Jul    173    49    270    102    355
  Big Piney, nr                   May-Jul    165    50    260     94    330
Green River
  Fontenelle Res, Fontenelle nr   Apr-Jul    380    52    505    240    725
  Fontenelle Res, Fontenelle nr   May-Jul    330    52    455    190    640
Big Sandy River
  Farson, nr                      Apr-Jul     30    58     45   17.6     52
  Farson, nr                      May-Jul     27    56     42   15.0     48
Green River
  Green River, Wy, nr             Apr-Jul    365    50    500    225    730
  Green River, Wy, nr             May-Jul    315    49    450    175    640
EF Smiths Fork River
  Stateline Res, Robertson,nr     Apr-Jul   18.4    71     25   13.6     26
  Stateline Res, Robertson,nr     May-Jul   17.8    68     24   13.0     26
Blacks Fork River
  Robertson, nr                   Apr-Jul     63    71     82     42     89
  Robertson, nr                   May-Jul     61    72     80     40     85
Hams Fork River
  Frontier, nr, Pole Ck, blo      Apr-Jul     33    61     42     22     54
  Frontier, nr, Pole Ck, blo      May-Jul     29    60     38   18.0     48
  Viva Naughton Res               Apr-Jul     39    53     58     23     74
  Viva Naughton Res               May-Jul     31    50     50   15.0     62
Green River
  Flaming Gorge Res, Flaming Gor  Apr-Jul    480    49    685    300    980
  Flaming Gorge Res, Flaming Gor  May-Jul    410    49    610    230    845
Little Snake River
  Slater, nr                      Apr-Jul     93    60    126     61    156
  Slater, nr                      May-Jul     87    63    120     55    138
  Savery, nr                      Apr-Jul    169    49    245     97    345
  Savery, nr                      May-Jul    155    53    230     83    295

BEAR RIVER BASIN
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Bear River
  Utah-Wyoming State Line, nr     Apr-Jul     75    67     93     55    112
  Utah-Wyoming State Line, nr     May-Jul     70    67     80     40    104
  Woodruff Narrows Rsvr, abv      Apr-Jul     72    60    100     50    121
  Woodruff Narrows Rsvr, abv      May-Jul     67    64     75     25    105
  Montpelier, nr, Stewart Dam, b  Apr-Jul     45    25     75   11.0    182
  Montpelier, nr, Stewart Dam, b  May-Jul     29    20     80     20    145
Smiths Fork River
  Border, nr                      Apr-Jul     56    63     69     42     89
  Border, nr                      May-Jul     50    62     67     33     80

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/A.Nielson,B.Bernard