Río Pastaza
| Río Pastaza | ||
 Bridge over the Río Pastaza near Baños |
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| Data | ||
| location |
 Ecuador , Peru
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|
| River system | Amazon | |
| Drain over | Río Marañón → Amazon → Atlantic Ocean | |
| Confluence of |
Río Chambo and Río Patate west of Baños 1 ° 24 ′ 18 ″ S , 78 ° 28 ′ 21 ″ W |
|
| Source height | approx. 1850 m | |
| muzzle | southeast of San Lorenzo in the Río Marañón Coordinates: 4 ° 54 ′ 37 " S , 76 ° 24 ′ 31" W 4 ° 54 ′ 37 " S , 76 ° 24 ′ 31" W |
|
| Mouth height | approx. 120 m | |
| Height difference | approx. 1730 m | |
| Bottom slope | approx. 2.9 ‰ | |
| length | approx. 600 km (including Río Chambo: 740 km)
|
|
| Catchment area | 41,000 km² | |
| Discharge at the Baños A Eo gauge: 7938 km² |
MQ Mq |
104.1 m³ / s 13.1 l / (s km²) |
| Discharge at the Puente la Union A Eo gauge: 12,066 km² |
MQ Mq |
730 m³ / s 60.5 l / (s km²) |
| Discharge A Eo : 41,000 km²
|
MQ Mq |
2770 m³ / s 67.6 l / (s km²) |
| Left tributaries | Río Verde , Río Topo , Río Alpayacu , Río Puyo , Río Copataza , Río Kapawi, Río Capahuari , Río Bobonaza | |
| Right tributaries | Río Llushin , Río Palora , Río Chiguaza, Río Huasaga , Río Huitoyacu , Río Chapuli | |
| Reservoirs flowed through | Agoyán dam | |
| Medium-sized cities | Baños | |
| Small towns | Mera , Shell | |
 Río Pastaza near Mera |
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The Río Pastaza (formerly Río Sumatara ) is an important tributary of the Amazon , which arises in the Ecuadorian Andes and flows into the Marañón on Peruvian territory . The Río Pastaza is a total of 600 km long, including the right source river Río Chambo, the total length is 740 km.
River course
The Río Pastaza has its source in the Ecuadorian Andes. Its two main source rivers are the Río Chambo and the Río Patate . The Río Chambo has formed a valley near Riobamba and initially flows north past the Tungurahua . West of Baños it unites with the Río Patate, which rises to the north, near the Cotopaxi . From here the upper reaches of the Río Pastaza flows past Baños in an easterly direction. It cuts through the Cordillera Real , the eastern Andean main ridge, over a distance of 60 km . At Agoyán, 14 km east of Baños, there is the 61 m high El Pailón del Diablo ( ⊙ ) waterfall of the Río Verde on the Río Pastaza. Below the two small towns of Mera and Shell , the Río Pastaza flows in a south-easterly direction through the Amazon lowlands . It forms the border of the Ecuadorian provinces Pastaza and Morona Santiago . To the north of Nuevo Andoas , the Pastaza reaches Peruvian territory. There it flows through the province of Datem del Marañón . After a further 300 kilometers, the Pastaza flows into the Río Marañón , the left source river of the Amazon, almost 20 km southeast of the provincial capital San Lorenzo .
The Río Pastaza flow to the left of the Río Capahuari and the Río Bobonaza , to the right the Río Huasaga and the Río Huitoyacu .
Use of hydropower
Agoyán dam
The river is dammed 4 km east of Baños by the Agoyán dam ( ⊙ ). Below the dam, an approximately 2.5 km long pressure line leads to a hydropower plant ( ⊙ ) with an installed capacity of 156 MW.
Map with all coordinates: OSM | WikiMap
Hydrology
The catchment area of the Río Pastaza covers 41,000 km², of which 24,296 km² are in Ecuador. The mean discharge is 2770 m³ / s.
various
The Río Pastaza was first explored and explored in 1741 by Pedro Vicente Maldonado for scientific purposes. The upper reaches of the Río Pastaza is a relatively shallow river with many sandbanks . Normally it is not systematically navigable, except with canoes or motor boats. However, it becomes a raging, very broad stream when large masses of water reach its source rivers in the highlands during the rainy season. The lower course is partly navigable from the Amazon up to the confluence of the Río Huasaga (200 km from the mouth).
Web links
Individual evidence
- ↑ a b A. Laraque, J. Ronchail and a .: Heterogeneous Distribution of Rainfall and Discharge Regimes in the Ecuadorian Amazon Basin. In: Journal of Hydrometeorology. 8, 2007, p. 1364, doi : 10.1175 / 2007JHM784.1 .
- ↑ Water Resources Assessment of Ecuador (PDF, 1.0 MB) United States Southern Command, US Army Corps of Engineers, Mobile District and Topographic Engineering Center (web.archive.org). September 1998. Retrieved January 12, 2019.