For 10 points, name these bodies of water, exemplified by Victoria and Superior.
The discharge from a prehistoric one of these structures near Missoula, Montana is responsible for the creation of the Channeled Scablands of Washington. When these bodies are closed or terminal, they are termed endorheic, and when their layers don't interact, they are meromictic. These structures can undergo deadly "overturns" in which carbon dioxide erupts from them. One of these structures was the starting point of a body named for G.K. Warren and is named for Louis Agassiz. For 10 points, name these bodies of water, exemplified by Victoria and Superior.
The discharge from a prehistoric one of these structures near Missoula, Montana is responsible for the creation of the Channeled Scablands of Washington.
lakes [accept glacial lakes; prompt on reservoirs]