Lake Health The City of Greater Sudbury is committed to keeping our lakes clean and healthy for future generations to enjoy. Blue-Green Algae Learn more about how to identify blue-green algae, what to look for and how to prevent exposure. Fish Species in Local Lakes List of fish species found in Sudbury lakes. Lake Facts Home to 330 lakes, Greater Sudbury is locally known as the City of Lakes. Lake Stewardship Get involved in helping us keep our lakes healthy. Join or create a Lake Stewardship group! Lake Water Quality Program Learn more about our Lake Water Quality Program. Lakefront Living Do you live on a lake or have a camp or cottage by the water? Get some tips on lakefront living. Lawn Fertilizer By-law This by-law is intended to help protect the health of Greater Sudbury's lakes. Local Lake Descriptions Learn more about local lakes. Watershed Study Learn more about our Watershed Advisory Panel.