Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Lac Sept-Îles Water Aerodrome, formerly TCLID: CSP8, was located on Lac Sept-Îles, Quebec, Canada and was open from the middle of May until the middle of October.
References
Nav Canada's Water Aerodrome Supplement. Effective 0901Z 26 March 2020 to 0901Z 22 April 2021.