The Otselic River is a 55.4 miles (89.2 km) tributary of the Tioughnioga River

Tioughnioga River

The Tioughnioga River is a tributary of the Chenango River in central New York in the United States. It drains a dissected plateau area east of the Finger Lakes at the northernmost edge of the watershed of the Susquehanna River....

 in central New York

New York

New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

 in the United States

United States

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

. It drains a mountainous area, mostly forested and agricultural, east of the Finger Lakes

Finger Lakes

The Finger Lakes are a pattern of lakes in the west-central section of Upstate New York in the United States. They are a popular tourist destination. The lakes are long and thin , each oriented roughly on a north-south axis. The two longest, Cayuga Lake and Seneca Lake, are among the deepest in...

 at the northern edge of the Susquehanna River

Susquehanna River

The Susquehanna River is a river located in the northeastern United States. At long, it is the longest river on the American east coast that drains into the Atlantic Ocean, and with its watershed it is the 16th largest river in the United States, and the longest river in the continental United...

 watershed.

It rises in southwestern Madison County

Madison County, New York

Madison County is a county located in the U.S. state of New York. As of the 2010 census, the population was 73,442. It is named after James Madison, fourth President of the United States of America...

, northeast of Georgetown

Georgetown, New York

Georgetown is a town in Madison County, New York, United States. The population was 946 at the 2000 census.The Town of Georgetown is on the south border of the county.- History :The town was first settled around 1804....

, and flows southwest, past Georgetown, Otselic

Otselic, New York

Otselic is a town in Chenango County, New York, United States. The population was 1,001 at the 2000 census. The town is named after a river flowing through it, the Otselic, which is an Oneida word for "place of wild plums."...

, and Cincinnatus

Cincinnatus, New York

Cincinnatus is a town in Cortland County, New York, U.S. The population was 1,051 at the 2000 census. The town is named after an important Roman general, Cincinnatus....

. It joins the Tioughnioga River from the northeast at Whitney Point

Whitney Point, New York

Whitney Point is a village in Broome County, New York, United States. The population was 965 at the 2000 census. It is part of the Binghamton Metropolitan Statistical Area...

, where it is impounded to form Whitney Point Reservoir.