Extended Streamflow Prediction
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7
000
FGUS65 KSTR 032044
ESPNM
TTAA00 KSLR DDHHMM
COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE
SALT LAKE CITY UT
May 3, 2018




WATER SUPPLY INFORMATION FOR
    SAN JUAN RIVER BASIN


PRECIPITATION (% OF AVERAGE) AND SNOWPACK (% OF MEDIAN):

SUBBASIN                 APR PRECIP     OCT-APR PREC    MAY 1 SNOWPACK
----------------------   ----------     ------------    ---------------
ABOVE NAVAJO RES              40             50                20
ANIMAS                        40             40                25
SAN JUAN                      40             40                 -

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

                         APR FLOW       OCT-APR FLOW
----------------------   --------       ------------
BASIN AVERAGE               35%             55%

******************************************************************************
RESERVOIR STORAGE AS OF MAY 1:

RESERVOIR                % CAPACITY*
---------------------    ----------
NAVAJO                       73
VALLECITO                    58
LEMON                        47

TOTAL                        71


San Juan River Basin
                           Period     50%  %AVG    10%    30%    70%    90%    AVG
                           ------    ----  ----   ----   ----   ----   ----    ---
San Juan River
  Pagosa Springs           Apr-Jul     83    39    103     90     76     63    215
  Pagosa Springs           May-Jul     60    33     80     67     53     40    180
  Carracas, nr             Apr-Jul    146    38    181    156    138    121    380
  Carracas, nr             May-Jul    105    35    140    115     97     80    300
Rio Blanco River
  Pagosa Springs, nr, Bla  Apr-Jul     23    43     29     26   19.7   16.7     54
  Pagosa Springs, nr, Bla  May-Jul   15.0    33     21     18   12.0    9.0     45
Navajo River
  Chromo, nr, Oso Div Dam  Apr-Jul     28    43     37     31     25     22     65
  Chromo, nr, Oso Div Dam  May-Jul     20    37     29     23   17.0   14.0     54
Piedra River
  Arboles, nr              Apr-Jul     57    27     77     64     52     42    210
  Arboles, nr              May-Jul     40    26     60     47     35     25    153
Los Pinos River
  Vallecito Res, Bayfield  Apr-Jul     60    31     85     69     53     46    194
  Vallecito Res, Bayfield  May-Jul     45    26     70     54     38     31    171
San Juan River
  Navajo Res, Archuleta,   Apr-Jul    200    27    280    225    185    147    735
  Navajo Res, Archuleta,   May-Jul    130    23    210    155    115     77    565
Florida River
  Lemon Res, Durango, nr   Apr-Jul   12.1    22   17.1   14.1   10.6    8.1     55
  Lemon Res, Durango, nr   May-Jul    9.0    18   14.0   11.0    7.5    5.0     49
Animas River
  Durango                  Apr-Jul    115    28    180    128     98     83    415
  Durango                  May-Jul     99    27    164    112     82     67    365
San Juan River
  Farmington               Apr-Jul    270    25    385    295    245    183   1100
  Farmington               May-Jul    197    22    310    220    170    110    880
La Plata River
  Hesperus                 Apr-Jul    4.0    17    7.0    5.0    3.5    3.0     23
  Hesperus                 May-Jul    3.0    16    6.0    4.0    2.5    2.0   18.2
San Juan River
  Bluff, nr                Apr-Jul    250    23    370    280    225    193   1100
  Bluff, nr                May-Jul    186    22    305    215    160    130    855
Mancos River
  Mancos, nr               Apr-Jul    6.6    21    9.6    7.6    5.6    4.6     31
  Mancos, nr               May-Jul    5.0    21    8.0    6.0    4.0    3.0     24

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/G. Smith



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.