Big Walnut Creek
|Big Walnut Creek|
The confluence of Big Walnut Creek and Alum Creek at Three Creeks Metro Park
|- location||~ 1 mi (1.6 km) southwest of Mount Gilead, Ohio|
|- elevation||~ 1,180 ft (360 m)|
|Scioto River near Lockbourne, Ohio|
|~ 665 ft (203 m)|
|Basin size||557 sq mi (1,440 km2)|
Big Walnut Creek starts near Mount Gilead, Ohio in Morrow County. It flows south to eastern Delaware County and parallels Alum Creek. It passes to the east of Sunbury and into Hoover Reservoir. The reservoir crosses into Franklin County and flows through Gahanna and Whitehall. Near Obetz it is joined by its principal tributaries Alum Creek and Blacklick Creek at the Three Creeks Columbus Metro Park. It flows through southern Franklin County and joins the Scioto River near the Franklin-Pickaway Counties line at .
Big Walnut Creek was named for black walnut trees which once grew in old-growth forests near the stream. According to the Geographic Names Information System, the Big Walnut Creek has also been known as:
- Big Belly Creek
- Big Bellys Creek
- Big Lick Creek
- Gahanna River
- Hayes Ditch
- Walnut Creek
- Whingwy Mahoni Sepung
- Menkwi Mhoani Siipunk
- U.S. Geological Survey. Mount Gilead quadrangle, Ohio. 1:24,000. 7.5 Minute Series. Washington D.C.: USGS, 1973.
- U.S. Geological Survey. Commercial Point quadrangle, Ohio. 1:24,000. 7.5 Minute Series. Washington D.C.: USGS, 1988.
- "Map of Ohio watersheds". Archived from the original on 2012-10-15.
- History of Delaware County and Ohio. O. L. Baskin & Company. 1880. p. 575.
- U.S. Geological Survey Geographic Names Information System: Big Walnut Creek