<P> According to IEA the United States was the 4th largest producer of hydroelectric power in the world in 2008 after China , Canada and Brazil . Produced hydroelectricity was 282 TWh ( 2008 ) . It was 8.6 % of the world 's total hydropower . The installed capacity was 80 GW in 2015 . The amount of hydroelectric power generated is strongly affected by changes in precipitation and surface runoff . </P>
<P> According to IEA the United States was the 4th largest producer of hydroelectric power in the world in 2008 after China , Canada and Brazil . Produced hydroelectricity was 282 TWh ( 2008 ) . It was 8.6 % of the world 's total hydropower . The installed capacity was 80 GW in 2015 . The amount of hydroelectric power generated is strongly affected by changes in precipitation and surface runoff . </P>
what percentage of hydropower is used in the united states
what percentage of hydropower is used in the united states
8.6 %
8.6 %