North River (Missouri)

The North River is an 82-mile-long (132 km) river in northeastern Missouri, the United States. It rises in Knox County at 40°03′30″N 92°15′26″W / 40.05833°N 92.25722°W / 40.05833; -92.25722 (northwest of Novelty) and flows southeast and east through Shelby and Marion counties, emptying into the Mississippi River at 39°51′21″N 91°26′41″W / 39.85583°N 91.44472°W / 39.85583; -91.44472 between West Quincy and Hannibal.

The North River drainage area is 373 square miles (970 km2), with a median flow of 38 cu ft/s (1.1 m3/s) and a mean flow of 231 cu ft/s (6.5 m3/s) based on 72 years of record at the USGS Palmyra gaging station. Record flow was on April 21, 1973 at 57,500 cu ft/s (1,630 m3/s). During droughts flow sometimes drops to 1 cu ft/s (28 L/s) or less.

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