Extended Streamflow Prediction
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000
FGUS65 KSTR 031928
ESPWY
COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE SALT LAKE CITY UTAH


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


PRECIPITATION AND SNOWPACK (% OF AVERAGE):

SUBBASIN                    MAR      OCT-MAR     APR 1       MAR
                          PRECIP     PRECIP      SNOW        FLOW
----------------------    ------     -------     -----     --------
GREEN ABV FLAMING GORGE      55         75         80          95
BEAR RIVER HEADWATERS        50         75         45          90

RESERVOIR STORAGE (KAF) AS OF March 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     MAR 31        Usable
                          Storage  Average  Capacity   Storage  Average  Avg Storage   Capacity
------------------------------------------------------------------------------------------------
 GREEN - FONTENELLE RE|    201.2|    165|     58|      121.3| 100|   121.7|     344.8|
 BIG SANDY - BIG SANDY|     24.1|    123|     63|11.5|  59|    19.6|      38.3|
 BLACKS FORK - MEEKS C|     26.6|    199|     89|15.8| 118|    13.4|      29.9|
 EF SMITHS FORK - STAT|      8.9|    162|     64| 7.4| 134|     5.5|      13.9|
 GREEN - FLAMING GORGE|   3165.7|    105|     84|     2916.9|  97|  3021.3|    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    168    245
Pine Ck
  Fremont Lk, abv                 Apr-Jul     85    87    101     59     98
New Fork River
  Big Piney, nr                   Apr-Jul    260    73    350    165    355
Green River
  Fontenelle Res, Fontenelle nr   Apr-Jul    580    80    720    390    725
Big Sandy River
  Farson, nr                      Apr-Jul     34    65     48     22     52
Green River
  Green River, Wy, nr             Apr-Jul    575    79    745    380    730
EF Smiths Fork River
  Stateline Res, Robertson,nr     Apr-Jul   16.5    63     21   13.0     26
Blacks Fork River
  Robertson, nr                   Apr-Jul     51    57     72     41     89
Hams Fork River
  Frontier, nr, Pole Ck, blo      Apr-Jul     35    65     52     27     54
  Viva Naughton Res               Apr-Jul     45    61     74     33     74
Green River
  Flaming Gorge Res, Flaming Gor  Apr-Jul    650    66    920    440    980
Little Snake River
  Slater, nr                      Apr-Jul     85    54    121     59    156
  Dixon, nr                       Apr-Jul    152    44    225     96    345

BEAR RIVER BASIN
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Bear River
  Utah-Wyoming State Line, nr     Apr-Jul     80    71    102     64    112
  Woodruff Narrows Rsvr, abv      Apr-Jul     61    50     87     48    121
  Montpelier, nr, Stewart Dam, b  Apr-Jul     60    33     91     48    182
Smiths Fork River
  Border, nr                      Apr-Jul     74    83     90     61     89


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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