Upper Rideau Lake

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Upper Rideau Lake
Upper Rideau Lake seen from Westport Harbour
Upper Rideau Lake
Location	Ontario
Coordinates	44°40′55″N 76°20′10″W / 44.682°N 76.336°W / 44.682; -76.336
Primary inflows	Westport Sand Lake
Primary outflows	Big Rideau Lake
Catchment area	61 km2 (24 sq mi)
Basin countries	Canada
Max. depth	23 m (75 ft)
Surface elevation	124.65 m (409.0 ft)
Settlements	Village of Westport, Village of Newboro

Upper Rideau Lake is a freshwater lake located in the municipality of Rideau Lakes, United Counties of Leeds and Grenville in Eastern Ontario, Canada. It is located in the Saint Lawrence River drainage basin and has the highest altitude of any body of water within the Rideau Canal system.