Leaf River (Illinois)

Leaf River
Basin features
Main source	Carroll County southeast of Shannon, Illinois 42°07′46″N 89°41′59″W / 42.1294444°N 89.6997222°W / 42.1294444; -89.6997222 (Leaf River origin)
River mouth	Confluence with the Rock River north of Oregon, Illinois 676 ft (206 m) 42°05′50″N 89°19′20″W / 42.0972222°N 89.3222222°W / 42.0972222; -89.3222222 (Leaf River mouth)Coordinates: 42°05′50″N 89°19′20″W / 42.0972222°N 89.3222222°W / 42.0972222; -89.3222222 (Leaf River mouth)
Progression	Leaf River → Rock → Mississippi → Gulf of Mexico
Physical characteristics
Length	31 mi (50 km)
GNIS ID	411890

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Place data as RDF

The Leaf River is a tributary of the Rock River, about 31 miles (50 km) long, in northwestern Illinois in the United States. Via the Rock, it is part of the Mississippi River watershed.

After rising east of the town of Shannon in northeastern Carroll County, the Leaf flows eastward across northwestern Ogle County, past the towns of Adeline and Leaf River. It joins the Rock River from the west between the towns of Byron and Oregon.

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