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Stillwater River (Ohio) facts for kids

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Stillwater River
Stillwater River.JPG
Stillwater River flows under Interstate 70 near Dayton, Ohio
Physical characteristics
Main source Near Union City, Ohio
~ 1,050 ft (320 m)
River mouth Great Miami River in Dayton
~ 750 ft (230 m)
Length 69 miles (111 km)
Discharge
  • Average rate:
    632.2 cu ft/s (17.90 m3/s), USGS water years 1926-2019
Basin features
Basin size 682 sq mi (1,770 km2)

The Stillwater River is a 69.3-mile-long (111.5 km) tributary of the Great Miami River in western Ohio in the United States. Via the Great Miami and Ohio rivers, it is part of the Mississippi River watershed.

It rises near the Indiana state line, in western Darke County, approximately 10 miles (16 km) northwest of Greenville. It flows east-southeast and is joined by Greenville Creek in Covington, approximately 5 miles (8 km) west of Piqua. It flows south past Covington and Englewood, where it is dammed for flood control, then southeast to join the Great Miami River in Dayton.

Stillwater River was so named on account of its relatively slow current. The Stillwater River was one of the Great Miami River tributaries that flooded during the Great Dayton Flood of 1913, resulting in the creation of the Miami Conservancy District.

Variant names

According to the Geographic Names Information System, the Stillwater River has also been known as:

  • Jacobs Lateral
  • Southwest Branch
  • Stillwater Creek
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