San Luis Rey River

San Luis Rey River
River mouth from North Coast Hwy bridge.
Location
CountryUnited States
StateCalifornia
Physical characteristics
SourceLake Henshaw reservoir
 • locationConfluence of West Fork San Luis Rey River and Buena Vista Creek, Cleveland National Forest, San Diego County
 • coordinates33°24′02″N 116°37′26″W / 33.40056°N 116.62389°W / 33.40056; -116.62389
 • elevation2,627 ft (801 m)
MouthPacific Ocean
 • location
Oceanside, San Diego County
 • coordinates
33°12′08″N 117°23′32″W / 33.20222°N 117.39222°W / 33.20222; -117.39222
 • elevation
0 ft (0 m)
Length69 mi (111 km), East-west
Basin size557 mi2 (1,440 km2)
Discharge 
 • locationOceanside
 • average36.3 cu ft/s (1.03 m3/s)
 • minimum0 cu ft/s (0 m3/s)
 • maximum25,700 cu ft/s (730 m3/s)
Basin features
Tributaries 
 • leftBuena Vista Creek
 • rightWest Fork San Luis Rey River, Pauma Creek

The San Luis Rey River is a river in northern San Diego County, California.

The river's headwaters are in the Palomar Mountain Range and Cleveland National Forest, near Palomar Mountain and the Santa Rosa Mountains. The river mouth, on the Pacific Ocean, is in northern Oceanside. The San Luis Rey River bike path runs along it for its last 9 miles (14 km).

The river is over 69 miles (111 km) long and drains 562 square miles (1,460 km2). There is little water in the river during most of the year, but it can have very large flows during winter storms.