Little Thornapple River is a 9.1 miles (14.6 km) river in Eaton County

Eaton County, Michigan

Eaton County is a county in the U.S. state of Michigan. As of the 2010 census, the population was 107,759. The county seat is Charlotte. Eaton County was named for John Eaton, who was Secretary of War under U.S. President Andrew Jackson, making it one of Michigan's Cabinet counties...

 in the U.S. state of Michigan.

The Little Thornapple rises in central Carmel Township

Carmel Township, Michigan

Carmel Township is a civil township of Eaton County in the U.S. state of Michigan. The population was 2,626 at the 2000 census.- Communities :* Five Points Corner is a named populated place south of the city of Charlotte at...

 at 42°33′23"N 84°54′27"W, approximately 4.5 miles (7.2 km) from downtown Charlotte

Charlotte, Michigan

Charlotte is a city in the U.S. state of Michigan. As of the 2010 census, the city population was 9,074. It is the county seat of Eaton County....

.

There are few named tributaries. Just north of the Wend Valley Airport

Wend Valley Airport

Wend Valley Airport is a general aviation airport located northwest of Charlotte in Eaton County, Michigan, USA.-Facilities:Wend Valley Airport has 1 runway. The airport is closed from December through March, and also when snow-covered.-Transit:...

, the Little Thornapple is joined by the Densmore Perkins Fish Creek Drain and the Baker Drain.

The stream flows primarily to the north and empties into the Thornapple River

Thornapple River

The Thornapple River is an tributary of Michigan's longest river, the Grand River. The Thornapple is located in western Michigan. It joins the Grand in Ada, Michigan.- Description :...

 in Chester Township

Chester Township, Eaton County, Michigan

Chester Township is a civil township of Eaton County in the U.S. state of Michigan. The population was 1,778 at the 2000 census.-Communities:* Chester is a tiny unincorporated community in the southern part of the township at ....

at 42°39′27"N 84°52′27"W.