Complex sentence: The Texas Highland Lakes is a chain of 7 reservoirs in Central Texas formed by several dams on the Colorado River as it winds southeast from its headwaters near the border of Texas and New Mexico to Matagorda Bay and the Gulf of Mexico.
Split into simpler sentences: The Texas Highland Lakes is a chain of 7 reservoirs in Central Texas formed by several dams on the Colorado River. This portion of the river winds southeast from its headwaters near the border of Texas and New Mexico to Matagorda Bay and the Gulf of Mexico.