Río Mosna

Río Mosna
Río Mosna at river km 2.5
Data
location	Peru
River system	Amazon
Drain over	Río Puchca  → Río Marañón  → Amazon  → Atlantic Ocean
Headwaters	Nevados de Cajat, Cordillera Blanca 9 ° 49 ′ 39 ″  S , 77 ° 11 ′ 42 ″  W
Source height	approx.  4800  m
muzzle	Río Marañón Coordinates: 9 ° 23 ′ 39 "  S , 77 ° 8 ′ 32"  W 9 ° 23 ′ 39 "  S , 77 ° 8 ′ 32"  W
Mouth height	approx.  2600  m
Height difference	approx. 2200 m
Bottom slope	approx. 38 ‰
length	58 km
Catchment area	approx. 1260 km²
Left tributaries	Rio Rurichinchay
Communities	Chavín de Huántar , San Marcos

The Río Mosna is the 58 km long main source river of the Río Puchca in Peru . It flows through the province of Huari in the east of the administrative region Ancash . The Río Mosna drains an area of ​​about 1260 km².

River course

The headwaters of the Río Mosna are formed by the up to 5504  m high Nevados de Cajat in the extreme south of the Cordillera Blanca , a glaciated mountain ridge of the Peruvian Western Cordillera . The Río Mosna flows mainly in a northerly direction. It drains the east side of the Cordillera Blanca. It passes the municipalities of Chavín de Huántar and San Marcos . At river kilometer 4, the Río Rurichinchay meets the Río Mosna from the left. This joins 6 km south-southeast of the provincial capital Huari with the Río Huari coming from the north to the Río Puchca.