First off, since 2000, catfish and tilapia rank as two of the most popular fish consumed in the United States thanks mainly to their taste and relatively low expense. And both contain heart-healthy omega-3 fatty acids.
Elevations and depths of the Great Lakes are shown by a profile in figure 41.6. Superior has the greatest depth, 1330 ft (370m); Michigan, Huron, and Ontario are of moderate depths, 800 to 900 ft (240 to 275 m); while by comparison Erie is very shallow, 200 ft (60 m).
1 The volume of water in the Great Lakes would cover North America in about 1 metre (3.5 ft.) of water. 2  The water flows from streams and rivers that empty into the Great Lakes, from Lake Superior down through Niagara to Lake Ontario, then into the St. Lawrence River to the Atlantic Ocean. The deepest section in the Niagara River is just below the Falls. 2  It is so deep it equals the height of the Falls above, 52 metres (170 ft.). 3  The Upper Niagara River extends 35 kilometres (22 mi.) from Lake Erie to the Cascade Rapids, which begin 1 kilometre (0.6 mi.) upstream from the Canadian Horseshoe Falls.