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 USGS Station 04264331
ST. LAWRENCE RIVER AT CORNWALL, ONTARIO NEAR MASSENA, NY

(National stream-quality accounting network station) (National radiochemical network station)

ST. LAWRENCE RIVER MAIN STEM

Latitude: 45^00'22"; Longitude: 74^47'43"
Hydrologic Unit Code: 04150301
Drainage area: 298,800 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 04264331

                                           MEDIAN   
                     25             75     CUMU-    
                   QUAR            QUAR-   LATIVE   
PERIOD      AVG.    ILE   MEDIAN   TILE    RUNOFF   
           (cfs)   (cfs)   (cfs)   (cfs)   (inch)   
-------------------------------------------------
OCT.	  263287  236852  264145  293815    0.28
NOV.	  259527  239000  264717  287500    0.74
DEC.	  251156  226234  254274  269782    1.54
OCT-DEC	  257990  237918  264015  283167
CALYEAR	  251974  234062  267833  282438

JAN.	  232740  220831  235371  243668    2.86
FEB.	  243207  224825  248539  257592    4.56
MAR.	  254158  230006  257695  282024    7.53
JAN-MAR	  243368  224769  247944  261801
OCT-MAR	  250679  228300  330596  447819

APR.	  261213  230100  273067  293758    9.86
MAY	  268908  235975  283242  306226    10.7
JUNE	  275062  246175  290450  307875    11.7
APR-JUN	  268394  241518  280429  300967

JULY	  274617  247764  280029  303674    12.3
AUG.	  271265  250473  275403  294927    12.7
SEP.	  269293  245050  274417  296700    12.9
JUL-SEP	  271725  251982  278679  295092
APR-SEP	  270059  140492  207226  334108

WATYEAR	  260427  238679  265077  283660

Extreme High and Low Monthly and Daily Average Flows for Station 04264331

                    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.	323800. 87 306032. 74 303323. 75 341000. 87 175000. 35 183032. 36 190581. 37 175000. 35 
NOV.	338100. 87 297133. 82 296567. 77 342000. 87 170000. 35 173200. 36 184000. 34 160000. 36 
DEC.	327000. 87 299742. 82 288484. 80 359000. 87 170000. 35 172613. 36 179000. 34 167000. 36 
JAN.	298700. 87 263032. 46 260065. 55 361000. 87 166000. 35 167258. 36 169000. 34 147000. 36 
FEB.	287500. 86 285600. 87 284750. 78 327000. 87 154000. 36 168000. 35 173000. 34 139000. 36 
MAR.	314400. 87 301645. 74 300700. 86 338000. 87 177000. 35 179774. 65 180000. 36 157000. 36 
APR.	325100. 73 317400. 86 313100. 87 341000. 86 179233. 64 183767. 65 187000. 35 165000. 64 
MAY	336677. 73 331300. 86 328700. 87 345000. 73 176484. 65 184032. 64 188000. 63 168000. 65 
JUNE	349833. 73 348400. 76 327333. 74 352000. 76 188633. 65 195767. 64 199000. 35 175000. 65 
JULY	349968. 73 349710. 76 336129. 74 351000. 76 195000. 34 200613. 64 201129. 65 195000. 34 
AUG.	330290. 74 326500. 86 325903. 76 351000. 73 187000. 34 197000. 35 199355. 36 187000. 34 
SEP.	326400. 86 316700. 73 314400. 74 341000. 86 180000. 34 188000. 35 194567. 36 180000. 34
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