Everything about Lake Nicaragua totally explained
Lake Nicaragua or
Cocibolca or
Granada (
Lago Cocibolca, Mar Dulce, Gran Lago, Gran Lago Dulce, or
Lago de Granada) is a vast
freshwater lake in
Nicaragua of tectonic origin. With an area of
8 264 km², it's the largest lake in
Central America, the
21st largest lake in the world (by area) and only slightly smaller than
Lake Titicaca. With an elevation of 32 m (105 ft) above sea level, the lake reaches a depth of 26 m (84 ft). It is intermittently joined by the
Tipitapa River to
Lake Managua.
The lake is connected to the
Caribbean Sea by the
San Juan River, historically making the lakeside city of
Granada, Nicaragua an Atlantic port although it's closer to the
Pacific. The lake has a history of Caribbean
pirates which assaulted nearby
Granada on three occasions.. Despite draining into the Caribbean Sea, the Pacific Ocean is near enough to be seen from the mountains of
Ometepe (an island in the lake).
Before construction of the Panama Canal, a stagecoach line owned by
Cornelius Vanderbilt's
Accessory Transit Company connected the lake with the Pacific across the low hills of the narrow Isthmus of
Rivas. Plans were made to take advantage of this route to build an interoceanic canal, the
Nicaragua Canal, but the
Panama Canal was built instead. In order to quell competition with the Panama Canal, the
U.S. secured all rights to a canal along this route in the
Bryan-Chamorro Treaty of
1916. However, the idea of another canal in Nicaragua still periodically resurfaces.
Ecocanal is one of these projects.
Lake ecology
Lake Nicaragua, despite being a freshwater lake, has
swordfish,
tarpon, and
sharks. Initially, scientists thought the sharks in the lake belonged to an
endemic species, the Lake Nicaragua Shark (
Carcharhinus nicaraguensis). In 1961, following comparisons of specimens, the Lake Nicaragua Shark was
synonymized with the widespread
Bull shark (
C. leucas), a species also known for entering freshwater elsewhere around the world. It had been presumed that the sharks were trapped within the lake, but this was found to be mistake in the late
1960s, when it was discovered that they were able to jump along the rapids of the
San Juan River (which connects Lake Nicaragua and the
Caribbean Sea), almost like
salmon. As evidence of these movements, bull sharks tagged inside the lake have later been caught in the
open ocean (and
vice versa), with some taking as little as 7-11 days to complete the journey. A non-native cichlid, a
Tilapia, is used widely in
aquaculture within the lake. Owing to the large amount of waste they produce, and the potential risk of introducing
diseases to which the native fishes have no
resistance, they potentially are a serious threat to the lake's
ecosystem.
Nicaraguans call the Lake
Lago Cocibolca or
Mar Dulce (literally, Sweet Sea; in Spanish, freshwater is
agua dulce). The lake has sizeable waves driven by the easterly winds blowing west to the
Pacific Ocean and can be sporadic and choppy. The lake holds
Ometepe and
Zapatera which are both volcanic islands, as well as the
archipelago of the
Solentiname Islands. The lake has a reputation for periodically having powerful, unnavigable storms.
In the past 37 years, considerable concern has been expressed about the ecological condition of Lake Nicaragua. In
1981 the
Nicaraguan Institute of Natural Resources and the Environment (IRENA) conducted an environmental assessment study and found that half of the water sources sampled were seriously polluted by
sewage. It was found that 32 tons (70,000 pounds) of raw sewage was being released into Lake Nicaragua daily. Industry located along the lake's shore had been dumping effluent for an extended period of time.
Pennwalt Chemical Corporation was found to be the worst polluter. Nicaragua's economic situation has hampered the building of treatment facilities nationwide (see:
Water supply and sanitation in Nicaragua).
Further Information
Get more info on 'Lake Nicaragua'.
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