Scientists have not agreed on the technical, formal differences between a pond and a lake, though in practice, a pond is not as deep or large as a lake. Whether a body of water is called a pond or lake usually depends on local conventions.Know More
Scientists who study inland waters consider depth to be the defining characteristic of ponds. They propose that ponds are bodies of water where sunlight penetrates to the bottom of all areas. In contrast, lakes are so deep that sunlight does not penetrate to the bottom. On the other hand, biologists and other researchers use surface area as the defining feature. The International Ramsar Wetland Convention sets 20 acres as the largest surface area for a pond, while an organization called Pond Conservation uses five acres as the maximum size. Inland bodies of water larger than these maximums are considered lakes.
Some inland bodies of water do not fit the definitions of "pond" and "lake" convincingly. There may be some question about classifications for a body of water in which sunlight penetrates to the bottom for nine months of the year, but algae prevents sunlight from reaching the bottom in the summer months, or what to call a 100-acre body of clear, shallow water. For example, one of the most famous ponds in the United States is called Walden Pond, yet its surface area measures 61 acres and its depth is between 102 and 107 feet.Learn more in Bodies of Water
Lake Pontchartrain has a mean depth of 10 to 16 feet, according to the Encyclopaedia Brittanica. Located in southeastern Louisiana, the lake is 40 miles long and has a maximum width of 25 miles. It covers an area of 630 square miles.Full Answer >
At its deepest point, Lake Michigan has a depth of 925 feet. On average, however, the lake has a depth of approximately 279 feet. As of 2014, Lake Michigan is the third largest Great Lake in North America with a water surface area of 22,300 square miles.Full Answer >
The maximum depth of Lake Superior is 1,332 feet. The average depth of Lake Superior is 483 feet. Lake Superior is the largest freshwater lake in the world by surface area.Full Answer >
Crater Lake in Oregon is 1,943 feet deep, according to the National Park Service. That makes Crater Lake the deepest U.S. lake and the world's ninth deepest.Full Answer >