Dams

Building large dams:

ADVANTAGES: 

water supply
more cultivated areas
more farmland reclaimed from deserts
no flooding risk
 provides electricity

DISADVANTAGES: 

people are forced to move
ecosystems and habitats are destroyed
 low quality lands
 more pollutants
less water life
more risk of earthquake




"El Chocon" dam in Argentina



LOCATION:
This dam is found in the Argentinian Patagonia, formed by the rivers of  Neuquen and Rio Negro.  

REASONS FOR BUILDING IT: 
Both the rivers Limay and Neuquen's waters were increasing so this was a problem for the population of "Alto Valle" and "Valle Medio", since there was a big flooring in 1899 that destroyed Viedma and Carmen de Patagones. 
In 1950 the "Agua y Energia Electrica" company, started developing the project, but they couldn't achieve it since there were very high prices. 
In 1967 the "Hidronor" company was able to start constructing this dam. 



PROBLEMS and LOCAL ISSUES: 

 the servicies weren't enough in order to satisfy the demand. 
School enrollment
Sewer
 Gas 
 Potable water