Extended Streamflow Prediction
Issued by NWS

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000
FGUS65 KSTR 051709
ESPCO

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

                      WATER SUPPLY INFORMATION FOR

                THE COLORADO RIVER BASIN WITHIN COLORADO

                           May 5, 2015


BASIN CONDITIONS (% OF AVERAGE) AS OF MAY 1:
   *NOTE: SNOW IS % OF MEDIAN

 SUBBASIN                  APR      OCT-APR    MAY1      APR
                          PRECIP    PRECIP     SNOW*   STRMFLW
----------------------    ------    -------    ----    --------
   UPPER COLORADO           90      85    65     100
   GUNNISON                 75      75    55      75
   DOLORES/SAN MIGUEL       60        75        35        30
   SAN JUAN                 40        70        35        50
   YAMPA/WHITE              80        80        50        75


RESERVOIR STORAGE (KAF) AS OF APRIL 30:
                            C U R R E N T   Y R     1981-2010
                          EOM      % of     % of    APR 30        Usable
                          Storage  Average  CapacityAvg Storage   Capacity
---------------------------------------------------------------------------
   COLORADO - LAKE GRANB|    491.3|    158|    100||      311.8|     490.3|
   WILLOW CK - WILLOW CK|      7.5|     97|     82||        7.7|       9.1|
   WILLIAMS FORK - WILLI|     83.7|    137|     86||       60.9|      96.9|
   MUDDY CK - WOLFORD MO|     49.7|    104|     75||       47.7|      66.0|
   BLUE - DILLON RES    |    247.1|    116|     97||      213.6|     254.0|
   BLUE - GREEN MTN RES |     72.1|    113|     49||       63.9|     146.9|
   HOMESTAKE CK - HOMEST|     20.8|    111|     48||       18.8|      43.0|
   FRYING PAN - RUEDI RE|     75.9|    121|     74||       62.6|     102.0|
   PLATEAU CK - VEGA RES|     19.7|    107|     60||       18.3|      32.9|
   TAYLOR - TAYLOR PARK |     82.1|    134|     77||       61.2|     106.2|
   GUNNISON - BLUE MESA |    597.3|    131|     72||      457.1|     829.5|
   GUNNISON - MORROW POI|    109.5|     98|     94||      111.8|     117.0|
   GUNNISON - CRYSTAL RE|     16.6|     99|     94||       16.7|      17.5|
   MUDDY CK - PAONIA RES|     14.0|    218|     84||        6.4|      16.7|
   UNCOMPAHGRE - RIDGWAY|     71.6|    108|     86||       66.6|      83.0|
   DOLORES - MCPHEE RES |    208.6|     65|     55||      323.0|     381.1|
   LOS PINOS - VALLECITO|    108.3|    146|     86||       74.0|     125.4|
   SAN JUAN - NAVAJO RES|   1170.5|     86|     69||     1361.0|    1696.0|
   FLORIDA - LEMON RES, |     28.1|    117|     70||       24.1|      39.8|
   COLORADO - LAKE POWEL|  10836.8|     63|     45||    17122.8|   24322.0|


STREAMFLOW FORECASTS:
Developed:                    May 1 2015

Yampa/White Basins
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Yampa River
  Stagecoach Rsvr, abv            Apr-Jul   16.3    71   18.5   14.6     23
  Stagecoach Rsvr, abv            May-Jul    9.7    61   11.9    8.0   16.0
  Steamboat Springs               Apr-Jul    156    60    196    128    260
  Steamboat Springs               May-Jul    120    55    160     92    220
Elk River
  Milner, nr                      Apr-Jul    199    62    245    169    320
  Milner, nr                      May-Jul    160    55    205    130    290
Elkhead Ck
  Long Gulch, abv, Hayden, nr     Apr-Jul     31    42     40     26     73
  Long Gulch, abv, Hayden, nr     May-Jul   14.8    30     23    9.8     50
Yampa River
  Maybell, nr                     Apr-Jul    480    51    605    405    935
  Maybell, nr                     May-Jul    355    46    480    280    775
Little Snake River
  Slater, nr                      Apr-Jul     86    55    109     71    156
  Slater, nr                      May-Jul     67    49     90     52    138
  Dixon, nr                       Apr-Jul    134    39    182    107    345
  Dixon, nr                       May-Jul    102    35    150     75    295
  Lily, nr                        Apr-Jul    134    39    183     99    345
  Lily, nr                        May-Jul    102    35    151     67    290
Yampa River
  Deerlodge Park                  Apr-Jul    620    50    785    510   1240
  Deerlodge Park                  May-Jul    460    45    625    350   1020
White River
  Meeker, nr                      Apr-Jul    180    64    230    155    280
  Meeker, nr                      May-Jul    135    55    184    110    245
  Watson, nr                      Apr-Jul    177    63    225    151    280
  Watson, nr                      May-Jul    136    58    184    110    235

Upper Colorado, Above Gunnison Basin
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Colorado River
  Lake Granby, Granby, nr         Apr-Jul    200    91    240    175    220
  Lake Granby, Granby, nr         May-Jul    180    88    220    155    205
Willow Ck
  Willow Ck Res, Granby, nr       Apr-Jul     35    74     42     28     47
  Willow Ck Res, Granby, nr       May-Jul     28    65     35     21     43
Fraser River
  Winter Park                     Apr-Jul   17.1    88     21   15.1   19.4
  Winter Park                     May-Jul   16.0    86     20   14.0   18.6
Williams Fork River
  Williams Fork Res, Parshall, n  Apr-Jul     82    85    102     73     96
  Williams Fork Res, Parshall, n  May-Jul     74    82     94     65     90
Blue River
  Dillon Res                      Apr-Jul    170   104    200    148    163
  Dillon Res                      May-Jul    157   103    187    135    153
  Green Mtn Res                   Apr-Jul    265    96    320    235    275
  Green Mtn Res                   May-Jul    240    94    295    210    255
Muddy Ck
  Wolford Mountain Reservoir      Apr-Jul     34    63     44     28     54
  Wolford Mountain Reservoir      May-Jul     25    54     35   19.0     46
Colorado River
  Kremmling, nr                   Apr-Jul    730    85    890    640    860
  Kremmling, nr                   May-Jul    640    82    800    550    785
Eagle River
  Gypsum, blo                     Apr-Jul    245    73    320    200    335
  Gypsum, blo                     May-Jul    220    70    295    175    315
Colorado River
  Dotsero, nr                     Apr-Jul   1080    77   1340    930   1400
  Dotsero, nr                     May-Jul    940    73   1200    790   1280
Frying Pan River
  Ruedi Res, Basalt, nr           Apr-Jul    100    72    141     86    139
  Ruedi Res, Basalt, nr           May-Jul     91    70    132     77    130
Roaring Fork River
  Glenwood Springs                Apr-Jul    470    68    605    420    690
  Glenwood Springs                May-Jul    420    66    555    370    640
Colorado River
  Glenwood Springs, blo           Apr-Jul   1570    74   1970   1360   2110
  Glenwood Springs, blo           May-Jul   1370    71   1770   1160   1930
  Cameo, nr                       Apr-Jul   1600    68   2050   1380   2360
  Cameo, nr                       May-Jul   1400    65   1850   1180   2150
Plateau Ck
  Cameo, nr                       Apr-Jul     40    32     51     31    124
  Cameo, nr                       May-Jul     31    30     42     22    104

Gunnison Basin
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Taylor River
  Taylor Park Res                 Apr-Jul     62    63     79     49     99
  Taylor Park Res                 May-Jul     53    59     70     40     90
  Almont                          Apr-Jul     96    62    121     76    155
  Almont                          May-Jul     83    59    108     63    141
East River
  Almont                          Apr-Jul    104    57    129     79    182
  Almont                          May-Jul     85    51    110     60    166
Gunnison River
  Gunnison, nr                    Apr-Jul    197    53    245    172    370
  Gunnison, nr                    May-Jul    160    48    210    135    335
Tomichi Ck
  Gunnison                        Apr-Jul     50    68     69     38     74
  Gunnison                        May-Jul     41    66     60     29     62
Lake Fork River
  Gateview                        Apr-Jul     94    76    114     74    123
  Gateview                        May-Jul     85    73    105     65    116
Gunnison River
  Blue Mesa Res                   Apr-Jul    440    65    540    370    675
  Blue Mesa Res                   May-Jul    365    61    470    300    600
  Morrow Point Res                Apr-Jul    470    64    575    405    740
  Morrow Point Res                May-Jul    395    61    500    330    650
  Crystal Res                     Apr-Jul    510    61    620    450    835
  Crystal Res                     May-Jul    430    59    540    370    735
Muddy Ck
  Paonia Res, Bardine, nr         Mar-Jun     34    35     49     29     96
  Paonia Res, Bardine, nr         May-Jun     20    29     35   15.0     69
  Paonia Res, Bardine, nr         Apr-Jul     30    31     45     25     97
  Paonia Res, Bardine, nr         May-Jul     21    28     36   16.0     75
NF Gunnison River
  Somerset, nr                    Apr-Jul    127    43    172    102    295
  Somerset, nr                    May-Jul    100    42    145     75    240
Surface Ck
  Cedaredge                       Apr-Jul    5.0    30    8.0    3.5   16.8
  Cedaredge                       May-Jul    3.0    21    6.0   1.50   14.1
Uncompahgre River
  Ridgway Res                     Apr-Jul     60    59     78     50    101
  Ridgway Res                     May-Jul     54    59     72     44     91
  Colona                          Apr-Jul     65    47     87     47    137
  Colona                          May-Jul     58    48     80     40    120
  Delta                           Apr-Jul     36    32     55     25    113
  Delta                           May-Jul     31    33     50     20     94
Gunnison River
  Grand Junction, nr              Apr-Jul    765    52    955    590   1480
  Grand Junction, nr              May-Jul    625    50    815    450   1240

Dolores Basin
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Dolores River
  Dolores                         Apr-Jul    111    45    137     88    245
  Dolores                         May-Jul     89    44    115     66    200
  Mcphee Res                      Apr-Jul    108    37    131     86    295
  Mcphee Res                      May-Jul     87    40    110     65    220
San Miguel River
  Placerville, nr                 Apr-Jul     78    61    100     60    128
  Placerville, nr                 May-Jul     68    60     90     50    113
Dolores River
  Cisco, nr                       Apr-Jul    152    27    235    150    565
  Cisco, nr                       May-Jul    117    28    200    115    415

Upper Colorado, Confluence
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Colorado River
  Cisco, nr                       Apr-Jul   2580    58   3300   2270   4440
  Cisco, nr                       May-Jul   2170    56   2890   1860   3860

San Juan Basin
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
San Juan River
  Pagosa Springs                  Apr-Jul     68    32     85     53    215
  Pagosa Springs                  May-Jul     45    25     62     30    180
  Carracas, nr                    Apr-Jul    122    32    151     96    380
  Carracas, nr                    May-Jul     86    29    115     60    300
Rio Blanco River
  Pagosa Springs, nr, Blanco Dam  Apr-Jul     20    37     26   14.2     54
  Pagosa Springs, nr, Blanco Dam  May-Jul   14.8    33     21    9.0     45
Navajo River
  Chromo, nr, Oso Div Dam, blo    Apr-Jul     23    35     31   15.6     65
  Chromo, nr, Oso Div Dam, blo    May-Jul   17.0    31     25   10.0     54
Piedra River
  Arboles, nr                     Apr-Jul     84    40    105     72    210
  Arboles, nr                     May-Jul     55    36     76     43    153
Los Pinos River
  Vallecito Res, Bayfield, nr     Apr-Jul     94    48    116     74    194
  Vallecito Res, Bayfield, nr     May-Jul     75    44     97     55    171
San Juan River
  Navajo Res, Archuleta, nr       Apr-Jul    230    31    300    170    735
  Navajo Res, Archuleta, nr       May-Jul    150    27    220     90    565
Florida River
  Lemon Res, Durango, nr          Apr-Jul     22    40     30   15.4     55
  Lemon Res, Durango, nr          May-Jul   17.1    35     25   10.5     49
Animas River
  Durango                         Apr-Jul    205    49    270    154    415
  Durango                         May-Jul    171    47    235    120    365
San Juan River
  Farmington                      Apr-Jul    320    29    455    255   1100
  Farmington                      May-Jul    225    26    360    160    880
La Plata River
  Hesperus                        Apr-Jul    7.9    34   10.9    4.5     23
  Hesperus                        May-Jul    6.0    33    9.0    2.6   18.2
San Juan River
  Bluff, nr                       Apr-Jul    300    27    430    250   1100
  Bluff, nr                       May-Jul    200    23    330    150    855
Mancos River
  Mancos, nr                      Apr-Jul    9.5    31   12.0    5.0     31
  Mancos, nr                      May-Jul    8.5    35   11.0    4.0     24

Lake Powell
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Colorado River
  Lake Powell, Glen Cyn Dam, at   Apr-Jul   3000    42   4220   2250   7160
  Lake Powell, Glen Cyn Dam, at   May-Jul   2360    39   3580   1610   6100

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/bja



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