Extended Streamflow Prediction
Issued by NWS

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000
FGUS65 KSTR 032042
ESPNM
TTAA00 KSLR DDHHMM
COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE
SALT LAKE CITY UT
June 3, 2022

        WATER SUPPLY INFORMATION FOR
            SAN JUAN RIVER BASIN


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

SUBBASIN                 MAY PRECIP     OCT-MAY PREC
----------------------   ----------     ------------
ABOVE NAVAJO RES              20            80
ANIMAS                         5            75

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

                         MAY FLOW       OCT-MAY FLOW
----------------------   --------       ------------
BASIN AVERAGE                75%             70%

******************************************************************************
RESERVOIR STORAGE (KAF) AS OF MAY  31, 2022:
Figures are in 1000 Acre Feet
                           C U R R E N T   Y R              L A S T   Y R
                           Usable     EOM Usable % of       EOM Usable   % of
                           Capacity   Contents   Capacity   Contents     Capacity
----------------------------------------------------------------------------------
   LOS PINOS - VALLECITO|      125.4|        92.1|     73|       76.6|        61|
---------------------------------------------------------------------------------
   SAN JUAN - NAVAJO RES|     1696.0|       953.6|     56|     1104.9|        65|
---------------------------------------------------------------------------------
   FLORIDA - LEMON RESER|       39.8|        26.3|     66|       18.6|        47|
---------------------------------------------------------------------------------
  T O T A L S           |     1861.2|      1071.9|     58|     1200.1|        64|

**********************************************************************************
San Juan River Basin
                           Period     50%  %AVG    10%    30%    70%    90%    AVG
                           ------    ----  ----   ----   ----   ----   ----    ---
San Juan River
  Pagosa Springs           Apr-Jul    123    63    136    129    116    115    194
  Pagosa Springs           Jun-Jul   16.5    20     30     23   10.3    8.5     82
  Carracas, nr             Apr-Jul    198    60    220    205    186    182    330
  Carracas, nr             Jun-Jul     30    22     50     38   17.5   14.0    135
Rio Blanco River
  Pagosa Springs, nr, Bla  Apr-Jul     31    63     34     32     29     28     49
  Pagosa Springs, nr, Bla  Jun-Jul    5.0    25    8.0    6.7    3.6    2.0     20
Little Navajo River
  Oso Div Dam,bl,chromo,n  Apr-Jul    2.9    48    3.1    3.0    2.7    2.5    6.1
  Oso Div Dam,bl,chromo,n  Jun-Jul   0.37    22   0.60   0.43   0.15   0.00   1.65
Navajo River
  Chromo, nr, Oso Div Dam  Apr-Jul     37    64     40     39     34     33     58
  Chromo, nr, Oso Div Dam  Jun-Jul    8.0    31   11.8   10.0    5.0    3.9     26
Piedra River
  Arboles, nr              Apr-Jul     83    46     91     85     78     75    181
  Arboles, nr              Jun-Jul   12.0    19     20     15    7.0    4.6     62
Los Pinos River
  Vallecito Reservoir, Ba  Apr-Jul    103    58    115    109     98     95    177
  Vallecito Reservoir, Ba  Jun-Jul     23    26     35     29   17.9   15.0     88
San Juan River
  Navajo Reservoir, Archu  Apr-Jul    310    49    340    325    300    295    630
  Navajo Reservoir, Archu  Jun-Jul     20     8     48     34    9.5    5.0    240
Florida River
  Lemon Reservoir, Durang  Apr-Jul     27    56     31     29     25     24     48
  Lemon Reservoir, Durang  Jun-Jul    5.1    22    9.0    7.0    3.5    2.6     23
Animas River
  Durango                  Apr-Jul    205    53    230    215    194    183    385
  Durango                  Jun-Jul     58    29     85     66     47     36    200
La Plata River
  Hesperus                 Apr-Jul   12.2    53   13.7   12.9   11.7   11.3     23
  Hesperus                 Jun-Jul    2.0    22    3.5    2.7   1.45   1.10    9.3
Mancos River
  Mancos, nr               Apr-Jul    9.6    56   10.8    9.8    9.2    8.8   17.2
  Mancos, nr               Jun-Jul   0.80    22    2.0    0.9   0.40   0.00    3.6
San Juan River
  Bluff, nr                Apr-Jul    565    51    640    605    550    530   1110
  Bluff, nr                Jun-Jul     76    16    150    118     61     40    480


50% Most probable volume in 1000 acre-feet.
%AVG  Most probable volume in percent of the 1991-2020 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/NIELSON


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