| Marys River | |
|---|---|
 | |
| Physical characteristics | |
| Source | |
| • location | Randolph County, Illinois |
| • coordinates | 38°11′07″N 89°37′40″W / 38.1853276°N 89.6278734°W |
| Mouth | |
• location | Confluence with the Mississippi River |
• coordinates | 37°52′49″N 89°46′59″W / 37.8803295°N 89.783161°W |
• elevation | 354 ft (108 m) |
| Length | 41 mi (66 km) |
| Basin features | |
| GNIS ID | 413088 |
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]
- ^ 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