Kogin Asan kogi ne dake united a jihar wanda ke yankin Amurka wanda ke cikin ƙauyen Asan-Maina . Ya samo asali ne daga tsaunukan Nimitz Hill Annex kuma yana gudana ta cikin Asan Inland Unit of War in Pacific National Historical Park (WAPA) kuma ya shiga cikin al'ummar Asan.Daga nan sai ta sake shiga WAPA a takaice a sashin Asan Inland Unit, tare da bakin a ƙarshen gabashin Asan Memorial Park zuwa Asan Bay.Don haka kogin ya kasance wani muhimmin yanayin yanki na Tekun Invasion na Asan ga sojojin Amurka yayin saukar farko a Guam a cikin Yuli 1944.

Asan River
General information
Labarin ƙasa
Map
Tsarin Daidaiton Labarin Kasa 13°28′N 144°43′E / 13.47°N 144.71°E / 13.47; 144.71
Kasa Tarayyar Amurka
Territory Guam
kogi ne dake United a nahiyar Amurka
Wannan hoton yankin ne
yankin asan