Puyo, also known as El Puyo, is the capital of Pastaza, a province in Ecuador. Puyo is located at an altitude of approximately 950 metres …Puyo, also known as El Puyo, is the capital of Pastaza, a province in Ecuador. Puyo is located at an altitude of approximately 950 metres above sea level by the Puyo River, a tributary of the Pastaza River, which eventually leads into the Amazon River. True to its name, derived from the Kichwa word for "cloudy", the local climate is a wet one and the weather is often overcast.