Extended Streamflow Prediction
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FGUS65 KSTR 052125
ESPUT


COLORADO BASIN RIVER FORECAST CENTER

NATIONAL WEATHER SERVICE

SALT LAKE CITY UT

June 5,2018



            INTERNAL NWS PRODUCT FOR GUIDANCE PURPOSES ONLY



                     WATER SUPPLY INFORMATION FOR

                                 UTAH



                                 AS OF

                              June 1,2018





PRECIPITATION (% Avg.):



SUBBASIN                 MAY PRECIP     OCT-MAY PREC

----------------------   ----------     ------------

BEAR                         75              85

WEBER                        60              70

SIX CREEKS (SLC)             65              70

PROVO                        75              65

SEVIER                       60              60

VIRGIN                       90              55

DUCHESNE                     90              65

PRICE/SAN RAFAEL             40              65



Developed:                    Jun 1 2018



Great Salt Lake Basin

                           Period     50%  %AVG    10%    30%    70%    90%    AVG

                           ------    ----  ----   ----   ----   ----   ----    ---

Bear River

  Utah-Wyoming State Line  Apr-Jul     89    79    104     94     85     75    112

  Utah-Wyoming State Line  Jun-Jul     36    55     51     41     32     22     66

  Woodruff Narrows Rsvr,   Apr-Jul     63    52     81     68     58     49    121

  Woodruff Narrows Rsvr,   Jun-Jul   19.3    34     37     24   14.3    5.3     57

  Montpelier, nr, Stewart  Apr-Jul     70    38     99     80     64     58    182

  Montpelier, nr, Stewart  Jun-Jul   14.4    16     44     25    8.6    2.8     91

Smiths Fork River

  Border, nr               Apr-Jul     87    98     95     90     81     74     89

  Border, nr               Jun-Jul     39    78     47     42     33     26     50

Logan River

  Logan, nr, State Dam, a  Apr-Jul     90    81    107     96     88     85    111

  Logan, nr, State Dam, a  Jun-Jul     40    66     57     46     38     35     61

Blacksmith Fork River

  Hyrum, nr, Upnl Dam, ab  Apr-Jul     30    70     36     32     28     27     43

  Hyrum, nr, Upnl Dam, ab  Jun-Jul   11.8    73   17.4   13.4    9.4    8.4   16.2

Little Bear River

  Paradise                 Apr-Jul     28    60     35     31     26     24     47

  Paradise                 Jun-Jul    4.8    41   11.8    7.8   2.80   0.87   11.6

Weber River

  Oakley, nr               Apr-Jul     67    57     78     71     60     51    118

  Oakley, nr               Jun-Jul     25    39     36     29   17.7    8.7     64

  Rockport Res, Wanship,   Apr-Jul     56    42     72     60     52     45    132

  Rockport Res, Wanship,   Jun-Jul   16.3    25     32     20   12.3    5.3     64

  Coalville, nr            Apr-Jul     56    42     72     62     51     47    134

  Coalville, nr            Jun-Jul   14.1    22     30     20    9.7    5.2     63

Chalk Ck

  Coalville                Apr-Jul   14.0    34     22     17   13.0   11.5     41

  Coalville                Jun-Jul    3.5    22   11.5    6.5   2.50   0.96   15.7

Weber River

  Echo Res, Echo, at       Apr-Jul     67    39     92     72     62     57    171

  Echo Res, Echo, at       Jun-Jul   15.4    21     40     20   10.2    5.2     75

Lost Ck

  Lost Ck Res, Croydon, n  Apr-Jul    4.7    35    6.5    5.2    4.2    4.0   13.4

  Lost Ck Res, Croydon, n  Jun-Jul   0.99    34    2.8    1.5   0.50   0.30    2.9

East Canyon Ck

  East Canyon Res, Morgan  Apr-Jul   10.3    38   13.0   11.1    9.5    8.5     27

  East Canyon Res, Morgan  Jun-Jul    2.7    32    5.4    3.5   1.91   0.91    8.4

SF Ogden River

  Huntsville, nr           Apr-Jul     28    50     35     31     27     25     56

  Huntsville, nr           Jun-Jul    6.5    47   13.2    9.2    5.2    3.2   13.9

Ogden River

  Pineview Res, Ogden, nr  Apr-Jul     41    36     62     49     39     37    113

  Pineview Res, Ogden, nr  Jun-Jul    5.0    22     26     14   3.50   1.47     23

Weber River

  Gateway                  Apr-Jul    108    33    160    120     95     87    325

  Gateway                  Jun-Jul     25    23     77     37   12.5    4.5    110

Provo River

  Woodland, nr             Apr-Jul     62    62     70     66     57     50    100

  Woodland, nr             Jun-Jul   17.2    37     25     21   12.0    5.0     47

  Hailstone, nr            Apr-Jul     61    55     67     63     54     47    110

  Hailstone, nr            Jun-Jul     21    40     27     23   13.5    7.0     52

  Deer Ck Res              Apr-Jul     64    50     74     69     60     53    127

  Deer Ck Res              Jun-Jul   14.8    27     25     20   10.8    4.0     55

American Fork River

  American Fork, nr, Up P  Apr-Jul    9.2    30   11.1   10.1    8.4    7.2     31

  American Fork, nr, Up P  Jun-Jul    4.0    22    5.9    4.9    3.2    2.0   18.1

Spanish Fork River

  Castilla, nr             Apr-Jul   14.9    22   17.2   16.0   13.2   11.2     69

  Castilla, nr             Jun-Jul    5.7    24    8.0    6.8    4.0    2.0     24

Jordan River

  Utah Lake, Provo, nr     Apr-Jul    169    52    186    177    161    146    325

  Utah Lake, Provo, nr     Jun-Jul     28    22     45     36   20.0    5.0    127

Little Cottonwood Ck

  Salt Lake City, nr       Apr-Jul     24    63     26     25   22.0   18.4     38

  Salt Lake City, nr       Jun-Jul   12.2    51   14.6   13.4   11.0    6.9     24

Big Cottonwood Ck

  Salt Lake City, nr       Apr-Jul   17.4    48   19.1   18.2   16.2   14.7     36

  Salt Lake City, nr       Jun-Jul    7.2    38    8.9    8.0    6.0    4.5   19.2

City Ck

  Salt Lake City, nr       Apr-Jul    2.6    34    3.0    1.8    2.4    2.1    7.7

  Salt Lake City, nr       Jun-Jul   1.19    33   1.60   0.35   0.95   0.65    3.6

Emigration Ck

  Salt Lake City, nr       Apr-Jul   0.80    20   0.91   0.80   0.80   0.70    4.0

  Salt Lake City, nr       Jun-Jul   0.19    17   0.30   0.19   0.19   0.09   1.14

Mill Ck

  Salt Lake City, nr       Apr-Jul    2.5    39    2.9    2.7   2.10   1.74    6.4

  Salt Lake City, nr       Jun-Jul   1.00    30   1.40   1.25   0.65   0.25    3.3

Dell Fk River

  Little Dell Res          Apr-Jul   1.06    19   1.31   1.16   1.00   0.90    5.5

  Little Dell Res          Jun-Jul   0.25    19   0.50   0.35   0.19   0.09   1.34

Lambs Ck

  Salt Lake City, nr       Apr-Jul   1.63    31   1.92   1.77   1.48   1.33    5.3

  Salt Lake City, nr       Jun-Jul   0.40    17   0.69   0.54   0.25   0.10    2.3

Parleys Ck

  Salt Lake City, nr       Apr-Jul    4.0    28    4.6    4.2    3.7    3.2   14.2

  Salt Lake City, nr       Jun-Jul   1.20    26   1.80   1.45   0.90   0.40    4.7

S Willow Ck

  Grantsville, nr          Apr-Jul   1.25    40   1.41   1.27   1.24   1.24    3.1

  Grantsville, nr          Jun-Jul   0.63    38   0.79   0.65   0.62   0.62   1.68

Red Butte Ck

  Ft Douglas, at, Salt La  Apr-Jul   0.39    21   0.49   0.44   0.34   0.29   1.90

West Canyon Ck

  Cedar Fort, nr           Apr-Jul   0.12     7   0.20   0.16   0.09   0.06   1.76

  Cedar Fort, nr           Jun-Jul   0.08    10   0.16   0.12   0.05   0.02   0.82



Sevier Basin

                           Period     50%  %AVG    10%    30%    70%    90%    AVG

                           ------    ----  ----   ----   ----   ----   ----    ---

EF Sevier River

  Kingston, nr             Apr-Jul     20    57     22     21   19.7   13.9     35

  Kingston, nr             Jun-Jul   16.0    86   17.8   16.8   15.4    9.6   18.7

Clear Ck

  Sevier, nr, Diversions,  Apr-Jul    6.6    31    7.3    6.9    6.2    5.2     21

  Sevier, nr, Diversions,  Jun-Jul   1.96    22    2.6    2.2   1.50   0.50    8.8

Salina Ck

  Emery, nr                Apr-Jul   1.39    18   1.64   1.48   1.28   1.14    7.9

  Emery, nr                Jun-Jul   0.55    17   0.80   0.64   0.44   0.30    3.3

Sevier River

  Gunnison, nr             Apr-Jul   14.7    15   18.6   15.8   12.6   10.9     99

  Gunnison, nr             Jun-Jul    5.8    12    9.7    6.9    3.7    2.0     50

Beaver River

  Beaver, nr               Apr-Jul    9.3    36    9.8    9.5    8.3    6.9     26

  Beaver, nr               Jun-Jul    3.4    25    3.9    3.6   2.40   1.00   13.6

Coal Ck

  Cedar City, nr           Apr-Jul    6.1    31    7.1    6.6    5.7    5.1   19.4

  Cedar City, nr           Jun-Jul   1.48    23    2.5    2.0   1.10   0.50    6.3



Eastern Utah - Green River Basin

                           Period     50%  %AVG    10%    30%    70%    90%    AVG

                           ------    ----  ----   ----   ----   ----   ----    ---

Blacks Fork River

  Robertson, nr            Apr-Jul     72    81     82     76     68     63     89

  Robertson, nr            Jun-Jul     32    54     42     36     28     23     59

Green River

  Flaming Gorge Res, Flam  Apr-Jul   1120   114   1300   1190   1050    995    980

  Flaming Gorge Res, Flam  Jun-Jul    575    96    760    650    510    450    600

White River

  Watson, nr               Apr-Jul    151    54    169    156    140    136    280

  Watson, nr               Jun-Jul     56    40     74     61     45     41    139

Big Brush Ck

  Vernal, nr, Red Fleet R  Apr-Jul    7.5    36    8.8    7.7    7.1    7.0     21

  Vernal, nr, Red Fleet R  Jun-Jul    2.5    28    3.8    2.7    2.1    2.0    9.0

Ashley Ck

  Vernal, nr               Apr-Jul   18.2    36     21     19   16.6   16.2     50

  Vernal, nr               Jun-Jul    6.0    25    8.5    6.6    4.4    4.0     24

Whiterocks River

  Whiterocks, nr           Apr-Jul     23    43     29     25   21.0   19.3     54

  Whiterocks, nr           Jun-Jul   10.5    31   16.0   12.2    8.2    6.5     34

Uinta River

  Neola, nr                Apr-Jul     47    64     57     52     44     40     74

  Neola, nr                Jun-Jul     25    50     35     30   22.0   18.0     50

Yellowstone River

  Altonah, nr              Apr-Jul     41    67     49     44     39     35     61

  Altonah, nr              Jun-Jul     22    54     30     25   19.7   16.0     41

Lake Fork River

  Moon Lake Res, Mtn Home  Apr-Jul     44    67     50     47     42     40     66

  Moon Lake Res, Mtn Home  Jun-Jul     22    51     28     25   19.7   18.0     43

Rock Ck

  Upper Stillwater Res     Apr-Jul     56    76     63     59     52     49     74

  Upper Stillwater Res     Jun-Jul     26    55     33     29   22.0   19.0     47

South Fork Rock Ck

  Docs Div, blo            Apr-Jul    3.7    51    4.4    3.9    3.4    3.1    7.3

  Docs Div, blo            Jun-Jul   1.80    37    2.5    2.0   1.53   1.20    4.9

Rock Ck

  Mountain Home, nr        Apr-Jul     64    73     71     68     61     58     88

  Mountain Home, nr        Jun-Jul     30    54     37     34     27     24     56

West Fork Duchesne River

  Vat Diversion, blo       Apr-Jul    8.7    47   10.0    9.2    8.3    7.9   18.6

  Vat Diversion, blo       Jun-Jul    2.7    29    4.0    3.2   2.30   1.90    9.3

Duchesne River

  Tabiona, nr              Apr-Jul     60    56     70     64     55     51    108

  Tabiona, nr              Jun-Jul     24    40     34     28   19.2   15.0     60

  Duchesne, nr, Knight Di  Apr-Jul    123    63    140    130    115    110    194

  Duchesne, nr, Knight Di  Jun-Jul     53    46     70     60     45     40    115

Currant Ck

  Currant Ck Res           Apr-Jul    5.4    27    6.8    5.8    5.2    5.0     20

  Currant Ck Res           Jun-Jul   1.10    15    2.5    1.5   0.90   0.70    7.4

Strawberry River

  Solider Springs,nr - St  Apr-Jul   16.3    23   18.8   16.8   14.8   13.3     71

  Solider Springs,nr - St  Jun-Jul    6.0    25    8.5    6.5    4.5    3.0     24

  Starvation Res, Duchesn  Apr-Jul     24    21     28     25   21.0   19.3    112

  Starvation Res, Duchesn  Jun-Jul    9.7    26   14.0   10.7    7.0    5.0     38

Duchesne River

  Myton                    Apr-Jul    133    40    161    140    119    113    330

  Myton                    Jun-Jul     42    24     70     49     28     22    173

  Randlett, nr             Apr-Jul    137    36    173    146    125    120    385

  Randlett, nr             Jun-Jul     42    20     78     51     30     25    210

Fish Ck

  Scofield, nr, Reservoir  Apr-Jul    7.0    23    7.9    7.4    6.8    6.7     30

  Scofield, nr, Reservoir  Jun-Jul   1.60    16    2.5    2.0   1.40   1.30    9.7

Price River

  Scofield Res, Scofield,  Apr-Jul    9.2    22   11.0    9.5    8.8    8.5     41

  Scofield Res, Scofield,  Jun-Jul   1.70    13    3.5    2.0   1.30   1.00   13.4

White River

  Blo Tabbyune Ck, Soldie  Apr-Jul   1.82    12   1.91   1.87   1.75   1.67   15.5

  Blo Tabbyune Ck, Soldie  Jun-Jul   0.45    13   0.54   0.50   0.38   0.30    3.4

Green River

  Green River, Ut          Apr-Jul   2220    75   2540   2310   2100   1940   2960

  Green River, Ut          Jun-Jul    980    63   1300   1070    860    700   1550

Huntington Ck

  Electric Lake            Apr-Jul    3.4    26    4.1    3.6    3.2    3.0   13.3

  Electric Lake            Jun-Jul   0.82    17   1.50   1.00   0.60   0.40    4.8

  Power Plant, blo -Hunti  Apr-Jul   18.0    45     20     19   17.2   16.4     40

  Power Plant, blo -Hunti  Jun-Jul    9.8    49   12.0   10.5    9.0    8.2   19.8

Seeley Ck

  Joes Vly Res, Orangevil  Apr-Jul     24    43     29     27     23     21     56

  Joes Vly Res, Orangevil  Jun-Jul    7.5    23   13.0   11.0    6.5    5.0     32

Ferron Ck

  Ferron, nr               Apr-Jul   12.2    32   15.2   13.7   11.2   10.7     38

  Ferron, nr               Jun-Jul    3.5    17    6.5    5.0    2.5    2.0     21

Muddy Ck

  Emery, nr                Apr-Jul    4.3    22    5.5    5.0    4.1    4.0   19.9

  Emery, nr                Jun-Jul   1.71    15    3.0    2.5   1.60   1.50   11.7



Upper Colorado Basin - UC and Dolores

                           Period     50%  %AVG    10%    30%    70%    90%    AVG

                           ------    ----  ----   ----   ----   ----   ----    ---

Dolores River

  Cisco, nr                Apr-Jul     71    13     81     77     69     68    565

  Cisco, nr                Jun-Jul     25    14     35     31     23     22    184

Colorado River

  Cisco, nr                Apr-Jul   2150    48   2600   2350   1950   1750   4440

  Cisco, nr                Jun-Jul    820    35   1270   1020    620    420   2340

  Lake Powell, Glen Cyn D  Apr-Jul   2800    39   3370   2990   2540   2340   7160

  Lake Powell, Glen Cyn D  Jun-Jul   1210    32   1780   1400    950    750   3760



San Juan Basin

                           Period     50%  %AVG    10%    30%    70%    90%    AVG

                           ------    ----  ----   ----   ----   ----   ----    ---

San Juan River

  Bluff, nr                Apr-Jul    205    19    240    215    192    185   1100

  Bluff, nr                Jun-Jul     35     8     68     47   22.0   15.0    450



lower colorado basin - virgin

                           Period     50%  %AVG    10%    30%    70%    90%    AVG

                           ------    ----  ----   ----   ----   ----   ----    ---

Santa Clara River

  Pine Valley, nr          Apr-Jul   1.12    22   1.20   1.13   1.11   1.11    5.0

  Pine Valley, nr          Jun-Jul   0.54    26   0.62   0.55   0.53   0.53    2.1

Virgin River

  Virgin                   Apr-Jul     20    34     22     21   19.9   19.7     58

  Virgin                   Jun-Jul    8.6    57   10.0    9.0    8.4    8.2   15.2

  Hurricane, nr            Apr-Jul   14.2    23   16.4   14.6   13.9   13.6     63

  Hurricane, nr            Jun-Jul    6.3    38    8.5    6.7    6.0    5.7   16.4

  Littlefield              Apr-Jul   15.5    24   18.1   16.0   14.8   14.5     65

  Littlefield              Jun-Jul    4.5    26    7.1    5.0    3.8    3.5   17.5



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/B.Bernard, P.Kormos, A.Nielsen, Z.Finch




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