Complex sentence: However, the Río Chepo and the Río Chagres are sources of hydroelectric power.The kampia lake and Madden Lake (also filled with water from the Río Chagres) provide hydroelectricity for the area of the former Canal Zone.
Split into simpler sentences: However, the Río Chepo and the Río Chagres are sources of hydroelectric power. The Kampia lake and Madden Lake (also filled with water from the Río Chagres) provide hydroelectricity for the area of the former Canal Zone.