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.
Location: Stormont County, Ontario--St. Lawrence County, NY, at Robert Moses-Robert H. Saunders power dam on Lake St. Lawrence at the International Boundary at Cornwall, Ontario, 2.9 mi upstream from Grass River, 6.2 mi upstream from Raquette River, and 5.9 mi northeast of Massena, NY. Water-quality samples collected at power dam from taps at generators 17 and 30.
Period of Record: June 1860 to September 1935 (monthly discharges only, published in WSP 1307), October 1935 to current year. Prior to October 1970 published as 04264000 "St. Lawrence River at Ogdensburg."
Gage Information: There is no gage. Discharge is determined from summation of discharge through the Robert Moses-Robert H. Saunders power dam, the Long Sault Dam, the Massena Diversion, the Rasin River Diversion, the Cornwall and Massena municipal water supply, and the Cornwall and the Wiley-Dondero navigation canals. U.S.-Canada coordinated discharge figures supplied by Corps of Engineers. Prior to 1956, base gage at lock 25 at Iroquois Ont. with supplementary gages. August 1956 to June 1958, base gage at lock 24 between Iroquois and Morrisburg, Ont., and supplementary gages. Prior to Aug. 1956, these were gages of the Canadian Hydrographic Service and from August 1956 to June 1958, were gages of the Hydro-Electric Power Commission of Ontario. Discharge in the reach of river at Cornwall, Ont.-- near Massena, NY is considered to be the same as discharge at Ogdensburg, NY when adjusted for storage in Lake St. Lawrence.
Use these links to retrieve
Monthly Streamflow hydrograph for this station,
;
Table of Current Streamflow conditions, or
tab-separated ASCII file of monthly data.
Return to the USGS National Water Conditions Report
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