- Also called: Red River of the South. a river in the S central US, flowing east from N Texas through Arkansas into the Mississippi
in Louisiana. Length: 1639 km (1018 miles)
- a river in the northern US, flowing north as the border between North Dakota and Minnesota
and into Lake Winnipeg, Canada. Length: 515 km (320 miles)
- a river in SE Asia, rising in SW China in Yunnan province and flowing southeast across
N Vietnam to the Gulf of Tongkin: the chief river of N Vietnam, with an extensive
delta. Length: 500 km (310 miles) Vietnamese name: Song Koi
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