Ril Lake is located in the Township of Lake of Bays, in the District of Muskoka, approximately 2 hours north of Toronto, Ontario, Canada at 45n20 degrees latitude, and 79w13 degrees longitude. The Lake is approximately 7 kilometers from the Village of Baysville, Ontario.
The perimeter of the lake is approximately 11.5 miles (18.5 kilometres) with an average depth of 30 feet (10 metres). The lake is primarily spring fed and supplemented by creeks and seasonal run-off. Ril Lake is located in the Precambrian Shield area of northern Ontario, consisting of underlying granite bedrock overlayed with 5 to 20 feet (1.5 to 6 meters) of soil, often with rocky granite outcroppings.
Local forest includes deciduous maple, oak, beach, birch and elm, and conifers including hemlock, spruce, cedar, and pine. Local wildlife includes deer, moose, beaver, brown/black bears, fox, and badger. A wide range of bird species are known to frequent the lake including loons, herons, hummingbirds, finches, ducks, ravens, partridge, robins and woodpeckers.
The north-eastern area of the lake is more developed with lots ranging from 50 feet to 100 feet of waterfront and developed shoreline. The south-western area of the lake is less developed with lots ranging from 400 feet to over 3,000 feet of primarily undisturbed shoreline. Ril Lake is designated as a "Category 2" lake by the Province of Ontario, reflecting its sensitivity to environmental damage and placing restrictions on future development. Ril Lake Cottage Association goals are: