Río Hollín

Río Hollín Río Hollín Grande
Cascadas del Río Hollín on the Río Hollín Chico a few meters above its junction with the Río Hollín Grande
Data
location	Province of Napo in Ecuador
River system	Amazon
Drain over	Río Misahuallí  → Río Napo  → Amazon  → Atlantic Ocean
Headwaters	Cordillera Real 0 ° 31 ′ 22 ″  S , 77 ° 44 ′ 30 ″  W.
Source height	approx.  2500  m
muzzle	Río Misahuallí , 7 km west of Tena Coordinates: 0 ° 58 ′ 16 ″  S , 77 ° 45 ′ 17 ″  W 0 ° 58 ′ 16 ″  S , 77 ° 45 ′ 17 ″  W
Mouth height	approx.  490  m
Height difference	approx. 2010 m
Bottom slope	approx. 24 ‰
length	approx. 85 km
Catchment area	approx. 910 km²
Right tributaries	Río Hollín Chico, Río Chontayacu, Río Jondachi

The Río Hollín (in the upper reaches: Río Hollín Grande ) is an approximately 85 km long left tributary of the Río Misahuallí in the Napo province in Ecuador .

River course

The Río Hollín rises in the Cordillera Real at an altitude of about 2500  m . The headwaters are 13 km west of the Sumaco volcano . The river is called Río Hollín Grande for the upper 30 km . Initially it flows mainly in a southerly direction along the southwest flank of the Sumaco. At river kilometer 55 the trunk road E20 ( Tena - Puerto Francisco de Orellana ) crosses the river. At this point the Río Hollín Chico meets the river when coming from the northwest. This is now called Río Hollín . The Río Hollín maintains its rough flow direction to the south. At river kilometers 20 and 17.5, the rivers Río Chontayacu and Río Jondachi flow into the Río Hollín on the right. This finally reaches the Río Misahuallí, which flows eastwards, 7 km west of the city of Tena, 16 km above its confluence with the Río Napo .

Catchment area

The Río Hollín drains an area of ​​about 910 km². The catchment area extends over a 35 km long section along the eastern flank of the Cordillera Real southwest of the Sumaco volcano .