|Origin||Confluence of east and west branches in Monroe Township, Ashtabula County|
|Mouth||Coordinates:  Lake Erie at Ashtabula, Ohio|
|Basin countries||United States of America|
|Length||40 mi (64 km)|
|Source elevation||850 ft (259 m) |
|Mouth elevation||571 feet (174 m)|
|Basin area||137 mi² (355 km²) |
- Ashtibula River
- Riviere Auscubalu
- Riviere Oscubolu
On October 30, 2008 the river was designated a State Scenic River by the Director of the Ohio Department of Natural Resources.
In 1985 the first two miles of the river was named an Area of Concern by the International Joint Commission, primarily because of Fields Brook, a tributary that had received discharges from 19 industries between the 1940s - 1970s.
- Fields Brook
- Strong Brook
- Hubbard Run
- Ashtabula Creek
- West Branch Ashtabula River
- East Branch Ashtabula River
During World War II, the United States Navy used the names of rivers with aboriginal American origins for an entire class of fleet oilers used to replenish vessels while underway at sea. The USS Ashtabula (AO-51) was commissioned in 1943 and served until 1982. Ashtabula was awarded eight battle stars for World War II service, four battle stars for the Korean War, and eight battle stars for duty in the Vietnam War. Partially scrapped in 1995, Ashtabula was expended as a target in fleet exercises on October 15, 2000. She has been the only Navy vessel to bear the name Ashtabula.
- U.S. Geological Survey Geographic Names Information System: Ashtabula River
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- U.S. Geological Survey. Pierpont quadrangle, Ohio. 1:24,000. 7.5 Minute Series. Washington D.C.: USGS, 1994.
- "Map of Ohio watersheds".
- United States Geological Survey Hydrological Unit Code: 04-11-00-03-050
- "History Page - City of Ashtabula".
- Rose, William Ganson. (1950) Cleveland: The Making of a City, p. 1065
- "Ashtabula River | Great Lakes | US EPA".