Pigeon Creek is a tributary

Tributary

A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...

 of 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...

 in southwestern 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...

. It runs approximately 47.5 miles (76.4 km) from its eastern source in rural Gibson County

Gibson County, Indiana

Gibson County is a county located in the southwestern part of the U.S. state of Indiana and is included in the Evansville, Indiana–Kentucky Metropolitan Statistical Area. As of 2010, the population was 33,503. The county seat is Princeton.-Geography:...

 near Princeton

Princeton, Indiana

The median income for a household in the city was $26,689, and the median income for a family was $37,308. Males had a median income of $28,076 versus $19,825 for females. The per capita income for the city was $15,049...

 and its western source near Owensville

Owensville, Indiana

For communities with a similar name, see Owensville.Owensville is a town in and the seat of Montgomery Township, Gibson County, Indiana, United States...

. The forks merge southeast of Fort Branch

Fort Branch, Indiana

Fort Branch is the largest town and second largest community in Gibson County, Indiana, United States after Princeton. The population was 2,320 at the 2000 census.-Geography:Fort Branch is located at ....

, and from there it heads southeast into Warrick County

Warrick County, Indiana

As of the census of 2000, there were 52,383 people, 19,438 households, and 15,181 families residing in the county. The population density was 136 people per square mile . There were 20,546 housing units at an average density of 54 per square mile...

 near Lynnville

Lynnville, Indiana

Lynnville is a town in Hart Township, Warrick County, Indiana, United States. The population was 781 at the 2000 census.-Geography:Lynnville is located at ....

, from where it heads south. The larger creek then turns west crossing into Vanderburgh County

Vanderburgh County, Indiana

As of the census of 2000, there were 171,922 people, 70,623 households, and 44,421 families residing in the county. The population density was 733 people per square mile . There were 76,300 housing units at an average density of 325 per square mile...

 under Interstate 164

Interstate 164

Interstate 164 is a spur highway of Interstate 64 in Evansville, Indiana. Interstate 164, also known as the Robert D. Orr Highway, has a total length of...

. The creek has a few more tributaries join as it first heads west through Evansville

Evansville, Indiana

Evansville is the third-largest city in the U.S. state of Indiana and the largest city in Southern Indiana. As of the 2010 census, the city had a total population of 117,429. It is the county seat of Vanderburgh County and the regional hub for both Southwestern Indiana and the...

's East and North Sides then south through Downtown Evansville

Downtown Evansville

Downtown Evansville is the region of Evansville, Indiana located between Canal Street at the south and east, the Lloyd Expressway to the north, Pigeon Creek to the northwest, and the Ohio Riverfront to the southeast south and southwest...

, where it empties into 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...

.