Near Mora in Catalonia it forces a way through the coastal mountains, and, passing Tortosa, falls into the Mediterranean about 80 m.
The second-class ports are Tumbez, Talara, Pimentel, Chimbote, Samanco, Casma, Huacho, Cerro-Azul, Tambo de Mora Lomas and Chala, on the coast, Puno on Lake Titicaca, and Leticia on the Amazon near the western mouth of the Javary, Callao (qv.) is the chief port of the republic and monopolizes the greater part of its foreign trade.
The stream next in importance is the Pecos river, which rises in Mora county and flows southward into Texas, where it joins the Rio Grande.
From Miranda to Mora the Bilbao-Tarragona railway follows the course of the Ebro along the right bank.