San Francisco de Macorís
Rivers here are short with their sources in the Cordillera Septentrional; they are tributaries of the River Camú, a tributary of the River Yuna that flows to the Samaná Bay. The most important river in the municipality is the River Jaya, that flows to the west of the city; San Francisco de Macorís is also known as "The City of the Jaya" because of this small river.