Katchewanooka lake is the first of the Kawartha Lakes. Katchewanooka is an Ojibway word, which means lake of many rapids. Lock 27 is the focal point of the area, joining both Katchewanooka and Clear lakes.
There is boat launch at Lakefield Marina on Water Street. The surface area is approximately 351 hectares (866 acres) maximum depth is approximately 9.1 m (30feet) the average depth is 2.3 metres (7 feet).
Major fish species include Small and Largemouth Bass, lots of Yellow Perch, Carp, Walleye, Muskellunge, and bluegill.
Walk, jog or cycle the Lakefield trail or visit the Lakefield farmers market in the summer.