Big Walnut Creek
| Big Walnut Creek | |
|---|---|
Big Walnut Creek in the Three Creeks Metro Park
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| Basin features | |
| Main source | ~ 1 mi (1.6 km) southwest of Mount Gilead, Ohio ~ 1,180 ft (360 m) |
| River mouth |
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 39°47′57″N 83°00′34″W / 39.799305°N 83.009373°W.
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:
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