Marys River (Illinois)

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Marys River
Physical characteristics
 ⁃ locationRandolph County, Illinois
 ⁃ coordinates38°11′07″N 89°37′40″W / 38.1853276°N 89.6278734°W / 38.1853276; -89.6278734 (Marys River origin)
 ⁃ location
Confluence with the Mississippi River
 ⁃ coordinates
37°52′49″N 89°46′59″W / 37.8803295°N 89.783161°W / 37.8803295; -89.783161 (Marys River mouth)Coordinates: 37°52′49″N 89°46′59″W / 37.8803295°N 89.783161°W / 37.8803295; -89.783161 (Marys River mouth)
 ⁃ elevation
354 ft (108 m)
Length41 mi (66 km)
Basin features
GNIS ID413088
Map all coordinates using: OpenStreetMap 
Download coordinates as: KML · GPX

Marys River is a tributary of the Mississippi River in Illinois. It drains a small watershed between the Big Muddy River and the Kaskaskia River. It joins the Mississippi just southeast of Chester, near Kaskaskia. Because of its proximity to Kaskaskia — the capital of Illinois Territory and the first capital of the State of Illinois — Marys River was the site of early settlements leading into the interior of Illinois.

Marys River is approximately 41 miles (66 km) in length.[1]

Cities and counties[edit]

The following cities and towns are in the Marys River basin:

Parts of the following counties are in the Mary's River basin:

See also[edit]


  1. ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map Archived 2012-03-29 at the Wayback Machine, accessed May 13, 2011

External links[edit]