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Lake Erie, Ohio, United States (42.14324 -81.23966)
Situated below Lake Huron, Erie's primary inlet is the Detroit River. The main natural outflow from the lake is via the Niagara River, which provides hydroelectric power to Canada and the U.S. as it spins huge turbines near Niagara Falls at Lewiston, New York and Queenston, Ontario. Some outflow occurs via the Welland Canal, part of the Saint Lawrence Seaway, which diverts water for ship passages from Port Colborne, Ontario on Lake Erie, to St. Catharines on Lake Ontario, an elevation difference of 326 ft (99 m). Lake Erie's environmental health has been an ongoing concern for decades, with issues such as overfishing, pollution, algae blooms, and eutrophication generating headlines.
Mount Saint Joseph, Delhi, Delhi Township, Hamilton County, Ohio, 45233-4555, United States (39.09645 -84.63745)
Coordinates: 39.07645 -84.65745 39.11645 -84.61745 - Minimum elevation: 472 ft - Maximum elevation: 939 ft - Average elevation: 771 ft
Polk Run, Montgomery, Deerfield Township, Warren County, Ohio, 45249-1736, United States (39.27799 -84.31695)
Coordinates: 39.24749 -84.33358 39.31251 -84.29398 - Minimum elevation: 567 ft - Maximum elevation: 962 ft - Average elevation: 804 ft