Arroyo Grande Creek

Arroyo Grande Creek
Lopez Lake and Dam on Arroyo Grande Creek
Location of Arroyo Grande Creek in California
Location
CountryUnited States
StateCalifornia
Physical characteristics
SourceSanta Lucia Range
  locationNorth of Huasna
  coordinates35°11′55″N 120°23′00″W / 35.19861°N 120.38333°W / 35.19861; -120.38333
  elevation1,307 ft (398 m)
MouthPacific Ocean
  location
Pismo State Beach
  coordinates
35°06′03″N 120°37′52″W / 35.10083°N 120.63111°W / 35.10083; -120.63111
  elevation
0 ft (0 m)
Length22 mi (35 km)
Basin size153 sq mi (400 km2)
Discharge 
  locationabove Arroyo Grande
  average19.7 cu ft/s (0.56 m3/s)
  minimum0 cu ft/s (0 m3/s)
  maximum5,400 cu ft/s (150 m3/s)

Arroyo Grande Creek is a major stream in San Luis Obispo County on the Central Coast of California. The creek flows 22 miles (35 km) in a southwesterly direction, from the Santa Lucia Range to the Pacific Ocean. It is a major source of water supply for southern San Luis Obispo County.

The creek's name is derived from the Spanish for "large watercourse", and was sometimes called the "Roaring Grande" in the 19th century due to its propensity for flooding. The city of Arroyo Grande, established in 1867, was named after the stream.