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 USGS Station 11264500
MERCED RIVER AT HAPPY ISLES BRIDGE, NEAR YOSEMITE, CA

(Hydrologic Benchmark Station)

SAN JOAQUIN RIVER BASIN

Latitude: 37^43'54"; Longitude: 119^33'28"
Hydrologic Unit Code: 18040008
Drainage area: 181 square miles.
Additional information is available about this station.
Use these links to retrieve Streamflow Hydrograph, or tab-separated ASCII file of monthly data.

Summary of Monthly Flows (1961-90)for Station 11264500

                                           MEDIAN   
                     25             75     CUMU-    
                   QUAR            QUAR-   LATIVE   
PERIOD      AVG.    ILE   MEDIAN   TILE    RUNOFF   
           (cfs)   (cfs)   (cfs)   (cfs)   (inch)   
-------------------------------------------------
OCT.	    40.8    11.1    28.0    53.1    0.18
NOV.	    73.5    19.7    54.1     108    0.53
DEC.	     101    35.1    61.9     105    1.06
OCT-DEC	    71.8    23.9    56.3    81.4
CALYEAR	     369     229     338     473

JAN.	     106    38.4    78.7     157    1.67
FEB.	     133    65.2     109     157    2.24
MAR.	     195     117     191     248    3.50
JAN-MAR	     144    81.6     146     189
OCT-MAR	     108    63.8    93.1     141

APR.	     504     350     449     676    6.53
MAY	    1245     802    1204    1702    13.8
JUNE	    1228     476    1097    1847    22.3
APR-JUN	     992     587     958    1309

JULY	     507     124     314     755    24.9
AUG.	     141    38.6    73.0     170    25.2
SEP.	    62.5    11.8    32.9    63.0    25.3
JUL-SEP	     236    67.5     144     340
APR-SEP	     614     327     576     789

WATYEAR	     362     206     337     514

Extreme High and Low Monthly and Daily Average Flows for Station 11264500

                    SECOND     THIRD                             SECOND     THIRD                
        MON.  HI.  MON.  HI.  MON.  HI.  DAILY  HI.  MON.  LO.  MON.  LO.  MON.  LO.  DAILY  LO. 
       ----------- ---------- ---------- ---------- ---------- ---------- ---------- ----------  
        FLOW  YR.  FLOW  YR.  FLOW  YR.  FLOW   YR.  FLOW  YR.  FLOW  YR.  FLOW  YR.  FLOW   YR. 
PERIOD  (cfs)      (cfs)      (cfs)      (cfs)       (cfs)      (cfs)      (cfs)      (cfs)      
------ ----------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
OCT.	267.    19 233.    83 176.    17 2000.   46 2.58    56 2.61    78 2.66    34 1.70    65 
NOV.	818.    51 274.    74 272.    84 5500.   51 4.89    33 4.98    30 6.02    32 2.20    56 
DEC.	736.    65 649.    51 606.    56 7480.   56 4.49    77 6.92    33 7.64    60 2.80    77 
JAN.	366.    80 322.    56 284.    65 2000.   80 6.70    77 11.20   60 11.60   33 3.50    77 
FEB.	401.    86 385.    63 360.    82 3690.   63 13.50   77 24.40   29 25.20   31 7.50    77 
MAR.	575.    86 351.    72 337.    16 1690.   86 25.20   77 49.40   24 55.30   48 16.     77 
APR.	1007.   26 982.    82 962.    16 3500.   82 173.    75 209.