Río San Juan (Colombia)
| Río San Juan | ||
|
|
||
| Data | ||
| location |
 Colombia
|
|
| River system | Río San Juan | |
| Headwaters | Cerro de Caramanta, Western Cordillera 5 ° 28 ′ 19 ″ N , 75 ° 53 ′ 47 ″ W |
|
| Source height | approx. 2200 m | |
| muzzle |
Pacific Ocean Coordinates: 4 ° 7 ′ 15 " N , 77 ° 31 ′ 8" W 4 ° 7 ′ 15 " N , 77 ° 31 ′ 8" W |
|
| Mouth height | 0 m | |
| Height difference | approx. 2200 m | |
| Bottom slope | approx. 5.5 ‰ | |
| length | approx. 400 km | |
| Catchment area | 16,465 km² | |
| Discharge at the Tadó A Eo gauge : 1600 km² Location: 290 km above the mouth |
MQ Mq |
260 m³ / s 162.5 l / (s km²) |
| Discharge at the Peñitas gauge Location: 110 km above the mouth |
MQ 1965/1989 |
2055 m³ / s |
| Outflow A Eo : 16,465 km² |
MQ Mq |
2550 m³ / s 154.9 l / (s km²) |
| Left tributaries | Río Tamaná , Río Sipí , Río Fujiadó, Río Cucurrupí, Río Copomá, Río Munguidó, Río Calima | |
| Medium-sized cities | Istmina | |
| Small towns | Tado | |
The Río San Juan is an approximately 400 km long tributary of the Pacific Ocean in western Colombia .
River course
The Río San Juan rises in the Western Cordillera at an altitude of about 2200 m . The headwaters are in the extreme north of the Risaralda Department . The Río San Juan initially flows 80 km in a westerly direction through the mountains. Finally he reaches the coastal plain. It passes the small town of Tadó at river kilometer 290 and then turns south-southwest. At river kilometer 270, near the city of Istmina , the highway I-13 crosses the river. At rivers 248 and 208, the rivers Río Tamaná and Río Sipí flow into the Río San Juan from the left. 90 km above the mouth, the Río San Juan turns west. 65 km above the mouth, the Río Calima meets the Río San Juan when coming from the south. This runs north of the Bahía Málaga bay , which is located in the Parque Nacional Natural Uramba Bahía Málaga . At river kilometer 40, the Río San Juan branches into several estuary arms. The river delta extends over an area of about 300 km². The middle and lower reaches of the Río San Juan lie in the Departamento del Chocó . For the last 60 kilometers, the river forms the border with the Departamento del Valle del Cauca to the south .
Hydrology
The Río San Juan drains an area of 16,465 km². The mean discharge is 2550 m³ / s. This makes it the most water-rich river on the Colombian west coast. The annual sediment load is 16 million tons. The catchment area of the Río San Juan lies in the humid tropical zone. This is characterized by tropical rainforest . The temperatures are relatively constant over the year. Furthermore, the climate is characterized by heavy rainfall and high humidity. The months of September to November usually see the highest rainfall on the Colombian west coast. In addition, there is a less pronounced rainy season between April and June. The mean monthly discharge of the Río San Juan (see diagram) is shown accordingly.
measured from 1965–1989
Individual evidence
- ↑ a b c d e Juan D. Restrepo, Björn Kjerfve: Water Discharge and Sediment Load from the Western Slopes of the Colombian Andes with Focus on Rio San Juan . The Journal of Geology, Vol. 108, No. January 1, 2000. Retrieved March 15, 2019.
- ↑ a b c d Juan D. Restrepo, Björn Kjerfve: The Pacific and Caribbean Rivers of Colombia: Water Discharge, Sediment Transport and Dissolved Loads . Hydrochemical Aspects of Major Pacific and Caribbean Rivers of Colombia. January 2004. Retrieved March 15, 2019.
- ↑ a b Discharge data at the Peñitas gauge . UNESCO (archived March 3, 2016). Retrieved March 16, 2019.