About Keswick Creeks

Keswick Creeks is one of 23 subwatersheds draining into Lake Simcoe. One of the smallest subwatersheds, it is often overlooked on maps and people can’t see most of its rivers as they are underground. This subwatershed is located in the southern half of Keswick, with the north half of Keswick being in the Maskinonge River subwatershed. Keswicks Creeks is bordered roughly by Lake Simcoe to the west, and Biscayne Blvd, Ravenshoe Road, and just east of Woodbine Ave.

Keswick is targeted as the Town of Georgina’s main growth area, and the population of 23,917 is slated to rise. Two thirds of Keswick’s 8,000 households are in the Keswick Creeks subwatershed, and they will be joined by many more homes in the coming years. This surge has already decreased Keswick Creeks’ natural habitat and human living activities have taken a toll on the lake. Increased phosphorus run- off into the water is fertilizing the weeds and making them grow like crazy.

This little subwatershed is considered ” significantly stressed” and with only 9% natural cover holds the record for the fewest trees and shrubs in the entire Lake Simcoe basin. But it has an extensive lakeside that gives it tremendous potential for the future.