Mad River (Washington)

The Mad River is a river in the U.S. state of Washington. It rises in the Cascade Mountains and flows southeast to join the Entiat River. It is part of the Columbia River basin, being a tributary of the Entiat River, which empties into the Columbia River.

Mad River
Location of the mouth of the Mad River in Washington Mad River (Washington) (the United States)
Location
Country	United States
State	Washington
County	Chelan
Physical characteristics
Source	Cascade Range
• coordinates	47°56′30″N 120°38′52″W[1]
Mouth	Entiat River
• coordinates	47°44′9″N 120°21′48″W[1]
Basin size	92.4 sq mi (239 km^2)[2]
Discharge
• location	river mile 0.4 at Ardenvoir[2]
• average	76.7 cu ft/s (2.17 m^3/s)[2]
• minimum	9.0 cu ft/s (0.25 m^3/s)
• maximum	659 cu ft/s (18.7 m^3/s)

See also

• List of rivers of Washington
• List of tributaries of the Columbia River

References

1. U.S. Geological Survey Geographic Names Information System: Mad River
2. "Water Resources Data-Washington Water Year 2005; Entiat, Wenatchee, and Sand Hollow River Basins and the Columbia River from Wells Dam to Rock Island Dam" (PDF). USGS. Retrieved 31 July 2009.