Карони
Except for the area comprised in the Yuruari- Cuyuni river basin, the entire state is included in the Orinoco drainage system. Among the most important rivers are the Caroní, the Paragua and the Caura, etc. All of them dig their courses through a rugged topography in the hard rocks of the Guiana shield, giving rise to rapid valleys and waterfalls. In the case of the Caroní River, these unevennesses have allowed the establishment of powerful hydroelectric plants. The Guri Reservoir and the Simón Bolívar Hydroelectric Plant (formerly Raúl Leoni), which covers more than 80,000 hectares, is the most important center for electricity generation in Venezuela. The Churún River, a tributary of the Caroní River, flows from the Auyan Tepui plateau, with a 936.60-meter drop: Angel Falls, the highest in the world.