San Jacinto River (California)

San Jacinto River
The mouth of the San Jacinto on Lake Elsinore, viewed from California State Route 74 (the Ortega Highway) on the southwest side of the lake
Map of the Santa Ana River watershed with the San Jacinto subbasin highlighted in yellow.
Location
CountryUnited States
StateCalifornia
RegionRiverside County
CitiesHemet, San Jacinto, Perris, Lake Elsinore
Physical characteristics
SourceSan Jacinto Mountains
 • locationSan Bernardino National Forest, Riverside County
 • coordinates33°43′52″N 116°48′36″W / 33.73111°N 116.81000°W / 33.73111; -116.81000[1]
 • elevation2,100 ft (640 m)
MouthLake Elsinore
 • location
Lake Elsinore, at the mouth of Railroad Canyon, northwest of the Sedco Hills and west of the Tuscany Hills of the Temescal Mountains, Riverside County
 • coordinates
33°38′45.06″N 117°18′53.42″W / 33.6458500°N 117.3148389°W / 33.6458500; -117.3148389
 • elevation
1,243 ft (379 m)
Length42 mi (68 km), Northwest then southwest
Basin size780 sq mi (2,000 km2)[2]
Discharge 
 • average16.4 cu ft/s (0.46 m3/s)[3]
 • minimum0 cu ft/s (0 m3/s)
 • maximum16,000 cu ft/s (450 m3/s)
Basin features
River systemSanta Ana River basin
Tributaries 
 • leftSouth Fork San Jacinto River
 • rightNorth Fork San Jacinto River
TypeWild, Scenic, Recreational
DesignatedMarch 30, 2009[4]

The San Jacinto River is a 42-mile-long (68 km)[5] river in Riverside County, California. The river's headwaters are in Santa Rosa and San Jacinto Mountains National Monument.[6] The lower portion of the 765-square-mile (1,980 km2) watershed is urban and agricultural land. As a partially endorheic watershed that is contiguous with other Great Basin watersheds, the western side of the San Jacinto Basin is a portion of the Great Basin Divide.

  1. ^ "San Jacinto River". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. 1981-01-19. Retrieved 2010-11-22.
  2. ^ "San Jacinto River Watershed: Geographic Setting". Lake Elsinore and Canyon Lake Task Force. Santa Ana Watershed Project Authority. Archived from the original on 2011-07-28. Retrieved 2010-11-22.
  3. ^ "USGS Gage #11070500 on the San Jacinto River near Elsinore, CA" (PDF). National Water Information System. U.S. Geological Survey. 1916–2009. Retrieved 2010-11-22.
  4. ^ https://www.rivers.gov/rivers/san-jacinto.php [bare URL]
  5. ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed March 16, 2011
  6. ^ McDonnell, Lawrence R. (1970). Rivers of California. San Francisco, California: Pacific Gas and Electric Company. p. 43.