Tributaries
The Pastaza has numerous tributaries, both above and below the hydroelectric dam. These contribute to its rapid flow and to its tendency to flood. On the highway side of the Pastaza, a tributary river occurs about every 3–4 km for a stretch of about 50 km; on the opposite bank, the number of tributaries is slightly lower. The major tributaries are the Chambo, Bobonaza, and Huasaga, also important are the Ambato, the Pindo, and the Puyo.
Read more about this topic: Pastaza River