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Lake Elsinore

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Lake Elsinore

Lake Elsinore
Shore of Lake Elsinore.
Location Riverside County, California
Coordinates
Type Sag pond
Primary inflows San Jacinto River, Leach Canyon, McVicker Canyon
Primary outflows Temescal Wash
Catchment area 750 sq mi (1,900 km2)
Basin countries United States
Max. length 6 mi (9.7 km) (max)
Max. width 1.5 mi (2.4 km) (max)
Surface area 2,993 acres (1,211 ha) (normal)
3,452 acres (1,397 ha) (full)[1]
Average depth 27 ft (8.2 m)[1]
Max. depth 42 ft (13 m)[1]
Water volume 41,700 acre·ft (51,400 dam3) (normal)
89,900 acre·ft (110,900 dam3) (full)[1]
Shore length1 14 mi (23 km)
Surface elevation 1,240 ft (380 m) (normal)
1,255 ft (383 m) (full)[1]
Settlements Lake Elsinore, Lakeland Village
References U.S. Geological Survey Geographic Names Information System: Lake Elsinore
1 Shore length is not a well-defined measure.

Lake Elsinore is a natural freshwater lake in Riverside County, California, located east of the Santa Ana Mountains and fed by the San Jacinto River. Originally named Laguna Grande by Spanish explorers, it was renamed for the town of Elsinore, now Lake Elsinore, established on its northeastern shore on April 9, 1888.

Contents

  • Limnology 1
    • Lake history 1.1
  • Description 2
    • Discharge 2.1
  • See also 3
  • References 4
  • External links 5

Limnology

Lake Elsinore is the largest natural freshwater lake in Southern California. With its own 750-mi2 (1,900-km2) watershed, it is situated at the lowest point within the San Jacinto River watershed of 750 sq mi (1,900 km2), at the terminus of the San Jacinto River. It is the terminal lake of a partially closed basin called the San Jacinto Basin.

Lake levels are healthy at 1,244 ft (379 m) (above sea level) with a volume of 30,000 acre·ft (37,000,000 m3)[2] that often fluctuates, although much has been done recently to prevent the lake from drying up, flooding, or becoming stagnant.

At 1,255 ft (383 m), the lake will spill into the outflow channel on its northeastern shore, known properly as Temescal Wash, flowing northwest through Temescal Canyon and feeding Alberhill Creek, which joins Temescal Creek, which in turn dumps into the Santa Ana River just northwest of Corona.

Lake history

Lake Elsinore was seen by the Spanish Franciscan padre Juan Santiago, exploring eastward from the Mission San Juan Capistrano in 1797. In 1810, the water level of the Laguna Grande was first described by a traveler as being little more than a swamp about a mile long.[3] Later in the early 19th century, the lake grew larger, providing Mexican rancheros, American trappers, the expedition of John C. Frémont, and the immigrants during the California Gold Rush a spot to camp and water their animals as they traveled along the southern shore of the lake on what later became the Southern Emigrant Trail and the route of the Butterfield Overland Mail. The lake and the Laguna Rancho adobe built near the lake on its southwest shore at its western corner was described by Benjamin Ignatius Hayes, who stayed there overnight on January 27–28, 1850:

In about 15 miles reach some timber where the hills approach near, apparently the termination of the valley of Temecula, a sort of low divide over which we enter into another valley. In both these is much good soil, although in the latter more of the wiry grass and more marshy, some little evergreen oak among the hills. Come to the Laguna, two miles from the divide. Some good young grass, great deal of elder on its banks; as we rode along frequent flocks of geese rose from the shore; many shots at them; none brought down. The water of the Laguna is saltish, the animals cannot drink it; if they could, such a sheet of fresh water here would be invaluable to the owner of this land. As we were moving along the lake, an Indian overtook us, running as if to catch up with us; said he was from Temecula and going to the mines; had a little pinole tied up in a handkerchief; spoke Spanish, seemed disposed to be communicative. At sunset the moon rises behind the snowy peaks to the eastward and is reflected on the lake. Wild sage; the lake has evidently once, near the house, been with a much broader basin. How is it supplied with water? Clover around it. The house is a substantial adobe. A small stream seems to enter it on the east. A low range of hills nearly surrounds the lake, higher where we are encamped on the southern side. The lake valley seems to be higher than that of Temecula. …Two or three men at this house; their wives seem to be Indians. Road firm and good, gently ascending for a mile or more from the lake; then uneven, occasionally sandy, to Temescal.[4]

As a result of the Great Flood of 1862, the level of the lake was very high, and the Union Army created a post at the lake to graze and water their horses. In the great 1862–65 drought, most of the cattle in Southern California died and the lake level fell, especially during 1866 and 1867, when practically no rain fell. However, the lake was full again in 1872, when it overflowed down its outlet through Temescal Canyon.[5]

After 1872, the lake again evaporated to a very low level, but the great rains in the winter of 1883–84 filled it to overflowing in three weeks. Descriptions of the lake at this time say that large willow trees surrounding the former low-water shore line stood 20 ft (6.1 m) or more below the high-water level and were of such size that they must have been 30 or more years old. This indicated the high water of the 1860s and 1870s must have been of a very short duration.[6]

The rainfall until 1893 was greater than normal, and the lake remained high and overflowed naturally on three or four occasions during that time. The lake water was purchased by the Temescal Water Company for the irrigation of land in Corona, California. Its outlet channel was deepened, permitting gravity flow down the natural channel of Temescal Canyon to Corona for a year or more after the water level sank below the natural elevation of its outlet. As the lake surface continued to recede, a pumping plant was installed, and pumping was continued a few seasons, but the concentration of salts in the lake, due to the evaporation and lack of rainfall, soon made the water unfit for irrigation, and the project was abandoned by the company.[6]

After 1893, the lakes water level sank almost continuously for nearly 10 years, with a slight rise every winter. Heavier precipitation, beginning in 1903, gradually filled the lake to about half the depth above its minimum level since 1883. Then in January, 1916, a flood rapidly raised the level to overflowing.

The lake hosted teams for Olympic training and high-speed boat racing in the 1920s. The lake went dry in the mid-1930s, but refilled by 1938.[6]

The lake ran dry during most of the 1950s and was refilled in the early 1960s. More than a week of heavy rains in 1980 flooded the lake, destroying surrounding homes and businesses. Since then, a multimillion dollar project has been put into place to maintain the water at a consistent level, allowing for homes to be built close to the lake. In 2007, an aeration system was added to prevent fish kills in the lake's ecosystem.

Description

Lake Elsinore sits in a basin, the Elsinore Valley, a graben rift valley and part of the Elsinore Trough. It is the largest sag pond in the Elsinore Fault Zone.[7] It lies beyond the northwestern extremity of the Temecula Valley, cut off from its Santa Margarita River watershed by a slight ridge running across the valley south of the lake between the Sedco Hills and the Elsinore Mountains to the west, part of the larger Santa Ana Mountain Range to the west and northwest of the valley.

On the west side of the lake are many small arroyos, such as the Lakeland Village Channel, which drains canyons whose source is on the east slope of the Elsinore Mountains. Lake Elsinore's northwestern shore rises to the foothills of the Santa Ana Mountains and the saddle between them and the Clevelin Hills, which closely enclose the lake along its northeastern shore until they decline and end short near the shore of the Temescal Creek outlet from the lake that passes through downtown Lake Elsinore. Two of its larger tributaries come into the north shore of the lake from the Santa Ana Mountains, Leach Canyon Creek, and McVicker Canyon Creek.

The lake south of the Temescal Creek outlet lies in an open area at the mouth of its major tributary, the San Jacinto River, distantly bounded to the east by the Tuscany Hills and south of the river by the Sedco Hills both part of the range of the Temescal Mountains. Much of lake basin has been cut off from the lake and river by a flood-control levee, which only permits the isolated section to fill after an extremely large rainfall event raises the lake over the level of the overflow spillway, north of the baseball stadium.

Discharge

Lake Elsinore Valley, and the San Jacinto Basin that is its tributary, is a partially closed drainage basin, part of the Great Basin Divide. Its watershed is normally endorheic, but sometimes flows into the Santa Ana River watershed during periods of high water following heavy rainfall or snow melt. It discharges water through the Elsinore Spillway Channel outlet to Temescal Creek when the lake reaches the level of that outlet at 1,255 ft (383 m). Temescal Creek, flows through Warm Springs Valley and Walker Canyon into the Temescal Wash, which in turn flows through the northern Elsinore Trough to the Santa Ana River in such conditions. In recent years, efforts to maintain the lake at a stable high level have made these flows occur more frequently and for greater duration during the year.

See also

References

  1. ^ a b c d e http://sawpa.org/documents/Lake_Elsinore_Area_volume_table_000.pdf
  2. ^ http://www.swrcb.ca.gov/board_info/agendas/2002/july/0718-12.doc STATE WATER RESOURCES CONTROL BOARD
  3. ^ Water-supply paper, Volumes 425–429 By Geological Survey (U.S.), History of Elsinore Lake, p. 255
  4. ^ , Los Angeles, Priv. print., 1929. pp. 64–65Pioneer notes from the diaries of Judge Benjamin Hayes, 1849–1875Benjamin Ignatius Hayes, Edited and published by Marjorie Tisdale Wolcott, The adobe described was that of the Rancho La Laguna (Manriquez), owned at the time by Abel Stearns.
  5. ^ Water-supply paper, Volumes 425–429 By Geological Survey (U.S.), History of Elsinore Lake, p. 255]
  6. ^ a b c Water-supply paper, Volumes 425–429 By Geological Survey (U.S.), History of Elsinore Lake, p. 255
  7. ^ http://www.fs.fed.us/r5/projects/ecoregions/m262bk.htm Ecological Subregions of California, Subsection M262Bk, Perris Valley and Hills

External links

  • Elsinore, San Diego Co. Cal. Compliments of Wm. Varcoe & Co. Real Estate Dealers, Elsinore, Cal. (1887), "Lake Elsinore - 1280 feet above the sea, taken from mountain 1700 feet above the lake." Note lower left starts, "This representation of Lake Elsinore Valley, although in a primitive state of advancement, it being three years ago without population, will serve to convey to the mind of the observer some idea of the resplendent future in store for this Chautauqua of Southern California.". from Huntingon Digital Library website hdl.huntington.org. Note Lake level depicted is accurate, it was full and overflowed several times between 1884 and 1893.
  • Google Maps: Lake Elsinore

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