El Salvador has many rivers; most significant among them is the Lempa River.. Although the County is small it has many rivers. One of the biggest rivers is the Lempa River which rises in Guatemala near Esquipulas, crosses a corner of Honduras, and enters El Salvador at Citalá. It flows eastward for over eighty miles (130 km) and then southward for sixty-five miles (105 km). The Lempa River is about 422 km (262 miles long). The Lempa River is the biggest river that flows through El Salvador. The Lempa River is home to many fish, birds, and many mammal species. Also, the water produces electricity. The Lempa River was discovered in around 2000 bc. The Lempa River has many different ecosystems, including wetlands, mangroves, and forests. However, deforestation, pollution, and climate change threaten its health, leading to water contamination and reduced flow levels and the Hydropower produced by the river can create environmental concerns. The drains of the Lempa River are into the Pacific Ocean.