Extended Streamflow Prediction
Issued by NWS

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000
FGUS65 KSTR 041539
ESPUT

COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE
SALT LAKE CITY UT
MAR 4, 2015

            INTERNAL NWS PRODUCT FOR GUIDANCE PURPOSES ONLY

                     WATER SUPPLY INFORMATION FOR
                                 UTAH

                                 AS OF
                             MAR 1, 2015


PRECIPITATION AND SNOWPACK (% OF AVERAGE, ROUNDED):

SUBBASIN                 FEB PRECIP     OCT-FEB PREC     MAR 1 SNOWPACK
----------------------   ----------     ------------     -------------
BEAR                         70              85                65
WEBER                        50              65                65
SIX CREEKS (SLC)             40              65                55
PROVO                        25              60                55
SEVIER                       50              70                65
VIRGIN                       85              60                60
DUCHESNE                     35              60                65
PRICE/SAN RAFAEL             25              65                75



STREAMFLOW VOLUME FORECASTS:
Developed:                    Mar 1 2015

Great Salt Lake Basin
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Bear River
  Utah-Wyoming State Line, nr     Apr-Jul     91    81    123     71    112
  Woodruff Narrows Rsvr, abv      Apr-Jul     80    66    127     58    121
  Montpelier, nr, Stewart Dam, b  Apr-Jul     84    46    147     59    182
Smiths Fork River
  Border, nr                      Apr-Jul     84    94    106     68     89
Logan River
  Logan, nr, State Dam, abv       Apr-Jul     72    65    105     55    111
Blacksmith Fork River
  Hyrum, nr, Upnl Dam, abv        Apr-Jul     22    51     35   16.6     43
Little Bear River
  Paradise                        Apr-Jul   18.3    39     29   10.7     47
Weber River
  Oakley, nr                      Apr-Jul     79    67    113     60    118
  Rockport Res, Wanship, nr       Apr-Jul     78    59    114     52    132
  Coalville, nr                   Apr-Jul     76    57    115     49    134
  Echo Res, Echo, at              Apr-Jul     94    55    156     61    171
  Gateway                         Apr-Jul    148    46    255     76    325
Chalk Ck
  Coalville                       Apr-Jul   19.8    48     43   12.5     41
Weber River
  Coalville, nr                   Apr-Jul     76    57    115     49    134
Lost Ck
  Lost Ck Res, Croydon, nr        Apr-Jul    4.7    35    6.9    2.6   13.4
East Canyon Ck
  East Canyon Res, Morgan, nr     Apr-Jul   14.8    55     22    8.5     27
SF Ogden River
  Huntsville, nr                  Apr-Jul     29    52     44   13.7     56
Ogden River
  Pineview Res, Ogden, nr         Apr-Jul     43    38     76     21    113
Spanish Fork River
  Castilla, nr                    Apr-Jul     26    38     36   15.8     69
Provo River
  Woodland, nr                    Apr-Jul     71    71    102     56    100
  Hailstone, nr                   Apr-Jul     80    73    109     61    110
  Deer Ck Res                     Apr-Jul     88    69    121     59    127
American Fork River
  American Fork, nr, Up Pwrplnt,  Apr-Jul   12.7    41   19.7    8.3     31
  American Fork, nr, Up Pwrplnt,  Apr-Jul   12.7    41   19.7    8.3     31
Jordan River
  Utah Lake, Provo, nr            Apr-Jul    166    51    230     97    325
Little Cottonwood Ck
  Salt Lake City, nr              Apr-Jul     25    66     32   18.7     38
Big Cottonwood Ck
  Salt Lake City, nr              Apr-Jul     21    58     30   13.8     36
City Ck
  Salt Lake City, nr              Apr-Jul    3.6    47    5.9    2.3    7.7
Emigration Ck
  Salt Lake City, nr              Apr-Jul   1.70    42    2.7   0.89    4.0
Red Butte Ck
  Ft Douglas, at, Salt Lake City  Apr-Jul   0.59    31   1.39   0.37   1.90
Mill Ck
  Salt Lake City, nr              Apr-Jul    2.7    42    4.1   1.44    6.4
Dell Fk River
  Little Dell Res                 Apr-Jul    2.3    42    4.1   0.80    5.5
Lambs Ck
  Lambs Ck                        Apr-Jul    2.1    40    3.8   0.98    5.3
Parleys Ck
  Salt Lake City, nr              Apr-Jul    5.5    39    9.4    2.4   14.2
S Willow Ck
  Grantsville, nr                 Apr-Jul   1.56    50    2.3   0.89    3.1
West Canyon Ck
  Cedar Fort, nr                  Apr-Jul   0.55    31   1.70   0.24   1.76
Salt Ck
  Nephi Powerplant Div, blo       Apr-Jul    4.3    52    9.8    2.2    8.3

Sevier Basin
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
EF Sevier River
  Kingston, nr                    Apr-Jul     32    91     38   17.0     35
Clear Ck
  Sevier, nr, Diversions, abv     Apr-Jul   11.8    56     21    8.3     21
Salina Ck
  Emery, nr                       Apr-Jul    5.0    63    8.4    2.1    7.9
Sevier River
  Gunnison, nr                    Apr-Jul     46    46    107     21     99
Beaver River
  Beaver, nr                      Apr-Jul   12.4    48     24    8.4     26
Coal Ck
  Cedar City, nr                  Apr-Jul    8.9    46   19.1    4.3   19.4

Eastern Utah - Green River Basin
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Blacks Fork River
  Robertson, nr                   Apr-Jul     66    74     97     45     89
Green River
  Flaming Gorge Res, Flaming Gor  Apr-Jul    825    84   1220    540    980
White River
  Watson, nr                      Apr-Jul    240    86    340    180    280
Big Brush Ck
  Vernal, nr, Red Fleet Res, abv  Apr-Jul   11.3    54   19.6    5.9     21
Ashley Ck
  Vernal, nr                      Apr-Jul     23    46     43   12.9     50
Whiterocks River
  Whiterocks, nr                  Apr-Jul     32    59     48     21     54
Uinta River
  Neola, nr                       Apr-Jul     45    61     65     26     74
Yellowstone River
  Altonah, nr                     Apr-Jul     46    75     60     32     61
Lake Fork River
  Moon Lake Res, Mtn Home, nr     Apr-Jul     47    71     59     30     66
Rock Ck
  Upper Stillwater Res            Apr-Jul     57    77     73     42     74
South Fork Rock Ck
  Docs Div, blo                   Apr-Jul    4.6    63    6.3    2.9    7.3
Rock Ck
  Mountain Home, nr               Apr-Jul     68    77     84     47     88
West Fork Duchesne River
  Vat Diversion, blo              Apr-Jul    9.5    51   13.7    5.8   18.6
Duchesne River
  Tabiona, nr                     Apr-Jul     72    67     92     54    108
  Duchesne, nr, Knight Div, abv   Apr-Jul    138    71    170    100    194
Currant Ck
  Currant Ck Res                  Apr-Jul    9.3    46   14.0    4.2     20
Strawberry River
  Solider Springs,nr - Strawberr  Apr-Jul     27    38     48   15.5     71
  Starvation Res, Duchesne, nr    Apr-Jul     53    47     83     30    112
Duchesne River
  Myton                           Apr-Jul    182    55    270    110    330
  Randlett, nr                    Apr-Jul    190    49    295    118    385
Fish Ck
  Scofield, nr, Reservoir, abv    Apr-Jul   18.0    60     27   11.9     30
Price River
  Scofield Res, Scofield, nr      Apr-Jul     24    59     35   15.3     41
White River
  Blo Tabbyune Ck, Soldier Summi  Apr-Jul    7.5    48   12.2    3.2   15.5
Green River
  Green River, Ut                 Apr-Jul   2140    72   3000   1500   2960
Huntington Ck
  Electric Lake                   Apr-Jul    6.5    49   11.5    3.9   13.3
  Power Plant, blo -Huntington,   Apr-Jul     26    65     40     20     40
Seeley Ck
  Joes Vly Res, Orangeville, nr   Apr-Jul     38    68     56     24     56
Ferron Ck
  Ferron, nr                      Apr-Jul     31    82     45   19.0     38
Muddy Ck
  Emery, nr                       Apr-Jul   15.5    78     24   11.0   19.9

Upper Colorado Basin - Upper Colorado and Dolores
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Dolores River
  Cisco, nr                       Apr-Jul    400    71    650    265    565
Colorado River
  Cisco, nr                       Apr-Jul   3650    82   5300   2850   4440
  Lake Powell, Glen Cyn Dam, at   Apr-Jul   5100    71   7200   3470   7160

San Juan Basin
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
San Juan River
  Bluff, nr                       Apr-Jul    630    57    930    340   1100

Lower Colorado Basin - Virgin
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Santa Clara River
  Pine Valley, nr                 Apr-Jul    3.0    60    5.7    2.3    5.0
Virgin River
  Virgin                          Apr-Jul     28    48     48   19.6     58
  Hurricane, nr                   Apr-Jul     22    35     47   10.9     63
  Littlefield                     Apr-Jul   19.1    29     44   10.1     65

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/fml



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