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COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE
SALT LAKE CITY UT
Mar 3, 2013

        WATER SUPPLY INFORMATION FOR
    SAN JUAN RIVER BASIN


PRECIPITATION AND SNOWPACK (% OF AVERAGE):

SUBBASIN                 FEB PRECIP     OCT-FEB PREC    MAR 1 SNOWPACK
----------------------   ----------     ------------    ---------------
ABOVE NAVAJO RES              65             70                80
ANIMAS                        65             70                75
LOWER SAN JUAN                55             75                 -
TOTAL                         65             70                80

******************************************************************************
OBSERVED STREAMFLOW SUMMARY (% OF AVERAGE): Note - many gages affected by ice

                         FEB FLOW       OCT-FEB FLOW
----------------------   --------       ------------
BASIN AVERAGE               75%             65%

******************************************************************************
RESERVOIR STORAGE AS OF FEB 1:

RESERVOIR                % CAPACITY
---------------------    ----------
NAVAJO                       55
VALLECITO                    37
LEMON                        20

TOTAL                        53


WATER SUPPLY VOLUME FORECASTS:

San Juan River Basin
                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
San Juan River
  Pagosa Springs                  Apr-Jul    150    70    230     90    215
  Carracas, nr                    Apr-Jul    250    66    390    160    380
Rio Blanco River
  Pagosa Springs, nr, Blanco Dam  Apr-Jul     38    70     51     22     54
Navajo River
  Chromo, nr, Oso Div Dam, blo    Apr-Jul     45    69     71   19.3     65
Piedra River
  Arboles, nr                     Apr-Jul    150    71    230     80    210
Los Pinos River
  Vallecito Res, Bayfield, nr     Apr-Jul    140    72    195     80    194
San Juan River
  Navajo Res, Archuleta, nr       Apr-Jul    490    67    800    280    735
Florida River
  Lemon Res, Durango, nr          Apr-Jul     40    73     60     20     55
Animas River
  Durango                         Apr-Jul    280    67    400    160    415
San Juan River
  Farmington                      Apr-Jul    700    64   1080    370   1100
La Plata River
  Hesperus                        Apr-Jul   15.0    65     25    8.0     23
San Juan River
  Bluff, nr                       Apr-Jul    700    64   1100    350   1100
Mancos River
  Mancos, nr                      Apr-Jul     20    65     33   11.0     31

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