Ninnescah River
Ninnescah River at Peck, Kansas
Map of the Arkansas River watershed including the Ninnescah River
Location
Country	United States
State	Kansas
Physical characteristics
Source confluence
• location	Sedgwick County, Kansas
• coordinates	37°34′05″N 97°42′19″W / 37.56806°N 97.70528°W / 37.56806; -97.70528
• elevation	1,302 ft (397 m)
Mouth	Arkansas River
• location	Sumner County, Kansas
• coordinates	37°19′17″N 97°09′59″W / 37.32139°N 97.16639°W / 37.32139; -97.16639[1]
• elevation	1,152 ft (351 m)
Length	56 mi (90 km)
Basin size	2,129 sq mi (5,510 km2)
Discharge
• location	USGS 07145500 near Peck, KS[2]
• average	522 cu ft/s (14.8 m3/s)
• minimum	0.2 cu ft/s (0.0057 m3/s)
• maximum	33,700 cu ft/s (950 m3/s)
Basin features
Tributaries
• left	North Fork Ninnescah River
• right	South Fork Ninnescah River
Watersheds	Ninnescah-Arkansas- Mississippi

The Ninnescah River is a river in the central Great Plains of North America. Its entire 56.4-mile (90.8 km) length lies within the U.S. state of Kansas. It is a tributary of the Arkansas River.^[3]

Geography

The Ninnescah River originates in the Wellington Lowlands of south-central Kansas. It is formed in southwestern Sedgwick County by the confluence of the North Fork Ninnescah River and the South Fork Ninnescah River. From there, it flows southeast into the Arkansas River Lowlands. It empties into the Arkansas River roughly 3 miles (4.8 km) north of Oxford, Kansas in eastern Sumner County.^[4]