Mount Lake Water Aerodrome

The most probable reason for closure is the cessation of the associated private operation. Water aerodromes like this typically serve a specific fishing lodge, hunting camp, private cabin, or a small commercial air service. The closure was likely due to the owner no longer operating aircraft, the sale of the property, or the closure of the business it supported. It was not closed for large-scale economic reasons, military conversion, or a major documented accident.

The physical site is Mount Lake itself, a natural body of water. The 'aerodrome' was a legal designation for a landing area on the lake, not a physical structure that could be dismantled. The lake remains and is used for recreational purposes typical of the region, such as fishing and boating. While the official aerodrome registration is cancelled, the lake may still be used for landings and takeoffs by floatplane pilots at their own discretion, as is common on many remote Canadian lakes.

The aerodrome's significance was purely local and logistical. It served as a private, registered landing area for floatplanes, providing essential access to a remote part of Ontario inaccessible by road. Operations would have involved small single-engine aircraft on floats, such as the de Havilland Beaver, Cessna 185, or Piper Super Cub. These aircraft would have transported people (owners, guests, fishermen, hunters) and supplies to and from the site. It was one of thousands of similar small water aerodromes that have been historically vital for transportation and commerce across Canada's northern wilderness.

There are no known public plans or prospects for the official reopening of Mount Lake Water Aerodrome. Re-establishing it as a registered aerodrome would require the landowner or a commercial operator to file an application with Transport Canada and meet all current regulatory requirements. This is unlikely to happen unless a new private or commercial enterprise requiring registered floatplane access is established on the lake.