are the Chambo, Bobonaza, and Huasaga, also important are the Ambato, the Pindo, and the Puyo. Economy There are no major fisheries on the Pastaza River - it is primarily used as a means of transport by canoe. Its rise and fall are rapid and uncertain, and it is shallow and full of sandbanks and snags. Flooding occurs seasonally. Bridges In Ecuador, there are very few bridges across the Pastaza. The most significant ones are in Tungurahua province - namely a large span over the exact point of headwaters, just north of Baños, and the secondary span created by the Agoyán dam. After this, bridges tend to be of the suspension type, suitable for foot or small vehicle passage only. However, it is notable that the Pastaza can be forded during the dry season in a 4x4 truck, going across the floodplains below the town of Mera. See also Agoyán References and notes Tributaries of the Amazon River Rivers of Ecuador Rivers of Peru International rivers of South America Ramsar sites in Peru Upper Amazon Rivers of Loreto Region