The lake and its shorelines
The lake has about 11 kilometres of shoreline and is fed by groundwater and surface water, with several permanent and intermittent streams flowing in (Severn Sound Environmental Association, 2019). It drains through the North River at its northwest end (Severn Sound Environmental Association, 2019). Bass Lake Provincial Park is on the southeast shore, about four kilometres west of Orillia (Government of Ontario, 2021).
A small stop-log dam at the outlet to the North River regulates the water level. The Bass Lake Ratepayers Association manages it, and the Ministry of Natural Resources and Forestry sets the water level limits (Severn Sound Environmental Association, 2019). Stop logs are put in place in the spring and removed in the fall, or as needed (Severn Sound Environmental Association, 2019).
The Severn Sound Environmental Association, a joint municipal service board, monitors the lake and posts conditions updates through the season (Severn Sound Environmental Association, n.d.-a, n.d.-b).
Which municipality a property sits in also matters day to day: it sets the zoning, issues building permits, and sets the municipal share of property tax. On Bass Lake that is the Township of Oro-Medonte.