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Rio Hondo (California)

Rio Hondo
Country United States
State California
Tributaries
 - right Santa Anita Creek, Arcadia Wash, Eaton Wash, Alhambra Wash
Source Santa Anita Creek
 - location Irwindale, San Gabriel Valley
 - elevation 320 ft (98 m)
 - coordinates  [1]
Mouth Los Angeles River
 - location South Gate
 - elevation 79 ft (24 m)
 - coordinates  [1]
Length 16.4 mi (26 km) [2]
Basin 143 sq mi (370 km2) [3]
Discharge for below Whittier Narrows Dam
 - average 165 cu ft/s (5 m3/s) [4]
 - max 38,800 cu ft/s (1,099 m3/s)
 - min 0 cu ft/s (0 m3/s)

The Rio Hondo (Spanish translation: "Deep River") is a tributary of the Los Angeles River in Los Angeles County, California, approximately 16.4 miles (26.4 km) long.[2] As a named river, it begins in Irwindale and flows southwest to its confluence in South Gate, passing through several cities (though not the city of Los Angeles). Above Irwindale its main stem is known as Santa Anita Creek, which extends another 10 miles (16 km) northwards into the San Gabriel Mountains where the source, or headwaters, of the river are found.

The Rio Hondo has sometimes been described as a second channel of the San Gabriel River. For much of its length, the rivers flow parallel to each other about two miles (3 km) apart. Both rivers pass through the Whittier Narrows, a natural gap in the hills which form the southern boundary of the San Gabriel Valley. Here, both rivers are impounded by the Whittier Narrows Dam, which the Army Corps of Engineers describes as, "the central element of the Los Angeles County Drainage Area (LACDA) flood control system". During major storms, the outlet works at Whittier Narrows Dam can direct water to either channel, or runoff can be stored.

The Rio Hondo and San Gabriel River have both been part of a revitalization program called the Emerald Necklace. The goal of this program is to create a "necklace" of parks and reclaimed wild spaces with the two rivers. They are connected by a narrow strip in Irwindale and by Whittier Narrows to give them the appearance of a necklace if viewed from above. The project garnered broad support from organizations such as the Sierra Club along with the governments of the many cities the rivers pass through.[5]

Most of the Rio Hondo is a concrete-lined channel to serve its primary flood control function, but in two places the river flows over open ground: the Peck Road Water Conservation Park, and the Whittier Narrows Recreation Area. Large spreading grounds for water conservation surround much of the river, and its bike paths are very popular.

The river passes through the location of the Battle of Rio San Gabriel, fought on January 8, 1847, and which resulted in a U.S. victory. Although the battle was actually fought on west bank of the present-day Rio Hondo near where it is crossed by Washington Blvd,[6] the battle is named after the San Gabriel, which at that time flowed along these banks. A flood in 1867 caused the San Gabriel to change course, which it retains at present. The old San Gabriel was renamed the Rio Hondo after this flood. In Downey, California, the Rio Hondo was once known as the "Old River", because it was the old course of the San Gabriel River. The Old River School was named for it, and Old River School Road was named for the school. The "New River" is the present course of the San Gabriel River.

The Rio Hondo College and Rio Hondo Preparatory School were named after the river.

Contents

  • Crossings 1
  • See also 2
  • References 3
  • External links 4

Crossings

From mouth to source (year built in parentheses):[7]

See also

References

  1. ^ a b "Rio Hondo".  
  2. ^ a b U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed March 16, 2011
  3. ^ "USGS Gage #11102500 on the Rio Hondo near Downey, CA". National Water Information System. U.S. Geological Survey. 1928–1979. Retrieved 2012-08-24. 
  4. ^ "USGS Gage #11102300 on the San Gabriel River below Whittier Narrows Dam, CA" (PDF). National Water Information System. U.S. Geological Survey. 1967–2010. Retrieved 2012-08-24. 
  5. ^ http://angeles.sierraclub.org/News/SS_2005-05/SGRtour.asp
  6. ^ Grenier, Judson A., editor-in-chief (1978). A Guide to Historical Places in Los Angeles County. Dubuque, IA: Kendall/Hunt Publishing Co.
  7. ^ "National Bridge Inventory Database". Retrieved 2009-10-27. 

External links

  • LA Bike Paths: the Rio Hondo Bicycle Path
  • Army Corps of Engineers - Whittier Narrows Dam
  • Rio Hondo Preparatory School
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