Freshwater catch, 8 letters
Fossil site, perhaps, 7 letters
Hole which holds a whole lot of water, 7 letters
Large depression for water, 7 letters
Resting place of the Edmund Fitzgerald, 7 letters
Silt locale, 7 letters
Superior bottom, 7 letters
Superior's low point, 7 letters
Salt flats, formerly, 8 letters
The Aare flows into it, 8 letters