Amapa River
The Amapa River is a river in the Mexican states of Oaxaca and Veracruz.
The river originates in the foothills of the Sierra [Madre de Oaxaca] in Veracruz. It flows southeastwards, forming the border between Oaxaca and Veracruz, before emptying into the Tonto River, a tributary of the Papaloapan.