Río de la Paz
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Río de la Paz Chokeyapu, Boopi |
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 Amazon basin with the Río de la Paz (purple) |
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| Data | ||
| location |
 Bolivia
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| River system | Amazon | |
| Drain over | Río Beni → Rio Madeira → Amazon → Atlantic Ocean | |
| Source lake |
Laguna Pampalarama 16 ° 19 ′ 50 ″ S , 68 ° 4 ′ 45 ″ W |
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| Source height | 4486 m | |
| muzzle |
Río Beni Coordinates: 15 ° 40 ′ 32 ″ S , 67 ° 8 ′ 12 ″ W 15 ° 40 ′ 32 ″ S , 67 ° 8 ′ 12 ″ W. |
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| Mouth height | 444 m | |
| Height difference | 4042 m | |
| Bottom slope | 14 ‰ | |
| length | 289 km | |
| Catchment area | 12,840 km² | |
| Discharge at the Achachicala A Eo gauge : 127 km² |
MQ 1976-1998 Mq 1976-1998 |
1 m³ / s 7.9 l / (s km²) |
| Outflow at the Obrajes gauge |
MQ 1999-2008 |
2.2 m³ / s |
| Discharge at the Cajetillas A Eo gauge : 6650 km² |
MQ 1974–1983 Mq 1974–1983 HHQ (1982) |
80.7 m³ / s 12.1 l / (s km²) 1520 m³ / s |
| Discharge at the mouth of the A Eo : 12,840 km² |
MQ Mq |
173 m³ / s 13.5 l / (s km²) |
| Left tributaries | Tamampaya River | |
| Right tributaries | Rio Miguillas | |
| Big cities | La Paz | |
| Small towns | La Asunta | |
 Choqueyapu , upper reaches of the Río de la Paz at km 8.4 |
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 The Río Abajo flows into the Río de la Paz at km 45.4 |
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 Detailed map of the Río de la Paz |
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The Río de la Paz is a river in Bolivia . As the left tributary of the Río Beni, it belongs to the river system of the Amazon . The upper course is called Río Choqueyapu , the lower course Río Boopi .
course
Río Choqueyapu
The Río Choqueyapu has its origins about 25 km north of the metropolis of La Paz on the slopes of the Andean peaks Charquini and Wilamanquilisani . The source of the water is the Laguna Pampalarama , a mountain lake about 250 m long and 150 m wide, located at an altitude of 4486 m and fed by several periodically flowing mountain streams. The stream, initially called Río Kaluyo , flows through the Chakanta Valley in a southerly direction and after twenty kilometers reaches the northern outskirts of La Paz at an altitude of 4000 m .
On its way through the city, the Choqueyapu, which initially has an average of around 1 m³ / s of water, is forced into a concrete stream bed and is led underground for around four kilometers in the city center. At an altitude of 3365 m , the Río Choqueyapu meets the Río Orko Jahuira, which flows in from the left, at kilometer 31 and another four kilometers later the Río Irpavi , which also flows from the left, both of which also have only a low water flow . In the Obrajes district, the mean discharge has increased to around 2.2 m³ / s. After a total of 36 kilometers, the Choqueyapu leaves the La Paz basin in a southerly direction.
Río de la Paz
From the inflow of the Río Achocalla from the right at about river kilometer 41, the name changes to Río de la Paz (also: Río La Paz and Río Grande de La Paz ). Over a length of around 140 kilometers, it loses almost 2500 meters in altitude. For the first 30 kilometers, the Río de la Paz flows further south and has a valley floor about one kilometer wide , so that its valley is still quite densely populated and used for agriculture. Below Tirata (total km 83 from the source) the valley becomes so narrow that settlement is no longer possible. Only two road bridges cross the river in the entire section of the route (km 102 and km 143).
Then the Río de La Paz turns for another 30 kilometers in an easterly direction and then continues to flow in a north-easterly direction to its mouth. The valley floor here has a semi-desert character, while the upper half of the approximately two thousand meter sloping valley slopes is covered by cloud forests, a result of very regular mountain-valley wind systems. Important tributaries in this section are the Río Miguillas , which joins from the right (Km 166, 897 m ) and the Río Tamampaya on the left (Km 181, 832 m , around 55 m³ / s). Above the Tamampaya, the Río de la Paz has reached an average water flow of 81 m³ / s.
Río Boopi
In the further course, which is almost 110 kilometers long, the river is usually referred to as the Río Boopi . The river now flows through increasingly dense Yungas mountain forests, the only major settlement in this section of the river is La Asunta at kilometer 219. After a total length of 289 kilometers, the river meets the upper reaches of the Río Beni between the villages of Palos Blancos and San Miguel de Huachi . The course of the river has overcome a height difference of about 4000 meters on its way and carries an average of about 173 m³ / s water at the mouth.
Runoff regime
The water flow fluctuates greatly over the course of the year, in line with the tropical, alternately humid climate of its catchment area. The upper catchment area bordering the Altiplano receives significantly lower amounts of precipitation than the area of the lower Yungas, which lie in the humid air masses below the Passatin version . The range extends from less than 500 millimeters per year to over 3000 millimeters.
Mean monthly discharge (in m³ / s) at the Cajetillas station on the lower Rio de la Paz
(based on values from 1974 to 1983)
Individual evidence
- ↑ a b c d Luis Miguel Carrasco Nattes et al .: Estudio del regimen del escurrimiento superficial en la cuenca andina del rio Beni, Amazonia andina, Bolivia (PDF; 2.4 MB) , La Paz 1990
- ↑ Erick V. Sossa Sánchez: Modelos hidrológicos como una alternativa para la evaluación de los recursos hídricos en Latinoamérica ( PowerPoint ; 2.4 MB) . Servicio Nacional de Métereologia e Hidrologia. Santiago 2009
- ↑ Instituto Nacional de Estadística (INE): Bolivia: Promedio anual de caudales en los ríos de Bolivia, según punto de control y río, 1999 - 2008
- ↑ a b Michel-Alain Roche, Carlos Fernández Jáuregui, Angel Aliaga Rivera, Jorge Peña Mendez, Edgar Salas Rada, José Luis Montano Vargas: Balance hídrico superficial de Bolivia ( Memento of November 5, 2013 in the Internet Archive ) (PDF; 2, 5 MB) . La Paz 1992