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
758
FGUS65 KSTR 032116
ESPNM
TTAA00 KSLR DDHHMM
COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE
SALT LAKE CITY UT
Apr 3, 2018




WATER SUPPLY INFORMATION FOR
    SAN JUAN RIVER BASIN


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

SUBBASIN                 MAR PRECIP     OCT-MAR PREC    APR 1 SNOWPACK
----------------------   ----------     ------------    ---------------
ABOVE NAVAJO RES              45             50                55
ANIMAS                        40             40                50
LOWER SAN JUAN                45             40                 -

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

                         MAR FLOW       OCT-MAR FLOW
----------------------   --------       ------------
BASIN AVERAGE               30%             50%

******************************************************************************
RESERVOIR STORAGE AS OF APR 1:

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

TOTAL                        71


Most Recent April-July Runoff Forecasts for the San Juan Basin:

San Juan River Basin
                           Period     50%  %AVG    10%    30%    70%    90%    AVG
                           ------    ----  ----   ----   ----   ----   ----    ---
San Juan River
  Pagosa Springs           Apr-Jul    105    49    145    120     92     80    215
  Carracas, nr             Apr-Jul    160    42    220    185    138    120    380
Rio Blanco River
  Pagosa Springs, nr, Bla  Apr-Jul     26    48     37     30   22.0   19.0     54
Navajo River
  Chromo, nr, Oso Div Dam  Apr-Jul     32    49     43     37     26     22     65
Piedra River
  Arboles, nr              Apr-Jul     60    29     93     73     52     43    210
Los Pinos River
  Vallecito Res, Bayfield  Apr-Jul     60    31     96     71     47     38    194
San Juan River
  Navajo Res, Archuleta,   Apr-Jul    235    32    350    265    197    168    735
Florida River
  Lemon Res, Durango, nr   Apr-Jul   12.0    22     22     16    9.0    6.0     55
Animas River
  Durango                  Apr-Jul    132    32    205    160    111     90    415
San Juan River
  Farmington               Apr-Jul    310    28    485    385    265    215   1100
La Plata River
  Hesperus                 Apr-Jul    5.0    22    9.0    7.0    4.0    3.0     23
San Juan River
  Bluff, nr                Apr-Jul    300    27    475    370    240    195   1100
Mancos River
  Mancos, nr               Apr-Jul    8.0    26   13.0   10.0    6.0    4.0     31

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.