The Whitewater River is a 101 miles (162.5 km) tributary of the Great Miami River

Great Miami River

The Great Miami River is a tributary of the Ohio River, approximately long, in southwestern Ohio in the United States...

 in southeastern Indiana

Indiana

Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is...

 and southwestern Ohio

Ohio

Ohio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...

 in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It is formed by the confluence of two forks, the West Fork and East Fork.

The West Fork, shown as the main stem of the river on federal maps, rises in Randolph County, Indiana

Randolph County, Indiana

Randolph County is a county located in the U.S. state of Indiana. As of 2010, the population was 26,171. The county seat is Winchester.-History:...

, approximately 1 miles (1.6 km) northeast of Modoc

Modoc, Indiana

Modoc is a town in Union Township, Randolph County, Indiana, United States. The population was 196 at the 2010 census.-Geography:Modoc is located at ....

. It flows 69.5 miles (111.8 km) south and southeast, past Hagerstown

Hagerstown, Indiana

Hagerstown is a town in Jefferson Township, Wayne County, Indiana, United States. As of the 2010 census, the population was 1,787.-Geography:Hagerstown is located at ....

 and Connersville

Connersville, Indiana

At the 2000 census, there were 15,411 people, 6,382 households and 4,135 families residing in the city. The population density was 1,894.5 per square mile . There were 6,974 housing units at an average density of 857.3 per square mile...

, and joins the East Fork of the river at Brookville, Indiana

Brookville, Indiana

Brookville is a town in Brookville Township, Franklin County, Indiana, United States. The population was 2,625 at the 2000 census. The town is the county seat of Franklin County.-Geography:...

.

The 56.7 miles (91.2 km) East Fork rises in Darke County, Ohio

Darke County, Ohio

As of the census of 2000, there were 53,309 people, 20,419 households, and 14,905 families residing in the county. The population density was 89 people per square mile . There were 21,583 housing units at an average density of 36 per square mile...

, approximately 10 miles (16.1 km) northwest of New Paris

New Paris, Ohio

New Paris is a village in Preble County, Ohio, United States. The population was 1,623 at the 2000 census. It is part of the Dayton Metropolitan Statistical Area.- History :The area was in the tribal grounds of the Pottawatomi, Miami and Wyandot Indians....

. It flows south, through Richmond, Indiana

Richmond, Indiana

Richmond is a city largely within Wayne Township, Wayne County, in east central Indiana, United States, which borders Ohio. The city also includes the Richmond Municipal Airport, which is in Boston Township and separated from the rest of the city...

, and joins the West Fork of the river at Brookville, Indiana

Brookville, Indiana

Brookville is a town in Brookville Township, Franklin County, Indiana, United States. The population was 2,625 at the 2000 census. The town is the county seat of Franklin County.-Geography:...

.

Following continual flooding problems on the East Fork, and to help control flooding in the Ohio River

Ohio River

The Ohio River is the largest tributary, by volume, of the Mississippi River. At the confluence, the Ohio is even bigger than the Mississippi and, thus, is hydrologically the main stream of the whole river system, including the Allegheny River further upstream...

, the East Fork was dammed

DAMS

Driot-Arnoux Motorsport is a racing team from France, involved in many areas of motorsports. DAMS was founded in 1988 by Jean-Paul Driot and former Formula One driver René Arnoux. It is headquartered near Le Mans, only 2 km from the Bugatti Circuit.- History :The year after its foundation,...

 by the US Army Corps of Engineers to create Brookville Lake in 1968. Brookville Lake extends 17 miles (27.4 km) from just south of Liberty, Indiana

Liberty, Indiana

Liberty is a town in Center Township, Union County, Indiana, United States. The population was 2,061 at the 2000 census. It is the county seat of Union County.-Geography:Liberty is located at ....

, to Brookville.

The region surrounding the Whitewater River is known as the Whitewater Valley.