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COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE
SALT LAKE CITY UT
May 2, 2013

        WATER SUPPLY INFORMATION FOR
    SAN JUAN RIVER BASIN


PRECIPITATION AND SNOWPACK (% OF AVERAGE):

SUBBASIN                 APR PRECIP     OCT-APR PREC    MAY 1 SNOWPACK
----------------------   ----------     ------------    ---------------
ABOVE NAVAJO RES              70             65                45
ANIMAS                        55             65                35
LOWER SAN JUAN                50             65                 -
TOTAL                         60             65                45

******************************************************************************
OBSERVED STREAMFLOW SUMMARY (% OF AVERAGE):

                         Apr FLOW       OCT-APR FLOW
----------------------   --------       ------------
BASIN AVERAGE               35%             60%

******************************************************************************
RESERVOIR STORAGE AS OF MAR 1:

RESERVOIR                % CAPACITY
---------------------    ----------
NAVAJO                       55
VALLECITO                    50
LEMON                        28

TOTAL                        54


WATER SUPPLY VOLUME FORECASTS:

San Juan River Basin
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
San Juan River
  Pagosa Springs                  Apr-Jul    106    49    122     81    215
  Pagosa Springs                  May-Jul     85    47    101     60    180
  Carracas, nr                    Apr-Jul    165    43    193    138    380
  Carracas, nr                    May-Jul    142    47    170    115    300
Rio Blanco River
  Pagosa Springs, nr, Blanco Dam  Apr-Jul     26    48     33     20     54
  Pagosa Springs, nr, Blanco Dam  May-Jul     21    47     28   15.0     45
Navajo River
  Chromo, nr, Oso Div Dam, blo    Apr-Jul     28    43     37     23     65
  Chromo, nr, Oso Div Dam, blo    May-Jul     23    43     32   18.0     54
Piedra River
  Arboles, nr                     Apr-Jul    106    50    131     86    210
  Arboles, nr                     May-Jul     80    52    105     60    153
Los Pinos River
  Vallecito Res, Bayfield, nr     Apr-Jul     98    51    125     78    194
  Vallecito Res, Bayfield, nr     May-Jul     83    49    110     63    171
San Juan River
  Navajo Res, Archuleta, nr       Apr-Jul    325    44    420    265    735
  Navajo Res, Archuleta, nr       May-Jul    255    45    350    195    565
Florida River
  Lemon Res, Durango, nr          Apr-Jul     25    45     35   17.0     55
  Lemon Res, Durango, nr          May-Jul     22    45     32   14.0     49
Animas River
  Durango                         Apr-Jul    210    51    290    160    415
  Durango                         May-Jul    190    52    270    140    365
San Juan River
  Farmington                      Apr-Jul    430    39    565    340   1100
  Farmington                      May-Jul    350    40    485    260    880
La Plata River
  Hesperus                        Apr-Jul    8.7    38   12.7    6.7     23
  Hesperus                        May-Jul    7.0    38   11.0    5.0   18.2
San Juan River
  Bluff, nr                       Apr-Jul    385    35    525    275   1100
  Bluff, nr                       May-Jul    310    36    450    200    855
Mancos River
  Mancos, nr                      Apr-Jul   11.0    35   14.0    7.0     31
  Mancos, nr                      May-Jul   10.0    42   13.0    6.0     24

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/G.Smith