Oxford Basin Explained

Oxford Basin
Other Name:Oxford Lagoon
Marina Sanctuary
Location:Marina del Rey, California, U.S.
Type:Wetland
Part Of:Ballona Wetlands
Inflow:Storm drains, tidal inflows, groundwater
Outflow:Basin E, Marina Del Rey
Basin Countries:United States
Agency:Los Angeles County Department of Public Works
Pushpin Map:Los Angeles#USA California
Website:Oxford Retention Basin

Oxford Basin (also known as Oxford Lagoon or Marina Sanctuary) is a constructed wetland and wildlife conservation area in the northwest corner of Marina del Rey, California, located between Washington Boulevard and Admiralty Way.[1] [2]

The basin is a remnant of the historic Ballona Valley ecosystem and one of the last remaining intertidal mud flat habitats in Los Angeles County.[3]

Oxford Basin collects urban runoff from a watershed and remediates it in part through the use of bioswales, low-flow storm drain diversions, native landscaping and a circulation berm.[4] Other inputs to the lagoon are groundwater and tidal inflows from Marina del Rey Harbor.[5]

Oxford Basin is ringed by a nature walk loop that runs parallel to the Coastal Bike Trail on the Oxford Avenue side. Observation decks offer opportunities for wildlife viewing; the lagoon is host to between 50 and 100 species of birds.[6] [7] The Basin is “currently favored” for wading bird roosting and nesting because it “does not have significant human-bird conflicts.”[8]

Renewal

The Oxford Basin enhancement project, under the combined auspices of the Los Angeles County Department of Public Works, Los Angeles County Flood Control District and Los Angeles County Department of Beaches & Harbors, was completed in 2016.

Improvements included “flooding and runoff improvements…new fencing and signage, observation areas, lighting and a walking path.”[9] Some 3,000 cubic yards of polluted sediment was removed from the site. New floodgates were installed in improve water circulation.[10]

Some 650 existing plants and trees were removed, including non-native eucalyptus used seasonally by nesting birds and resting monarch butterflies. The old vegetation was replaced with 730 native trees and 45,000 native plants, including 200 new milkweed plants (the only food plant consumed by the monarch butterfly caterpillar).

The California Native Plant Society assisted in the establishment of site-appropriate plant communities, including coastal sage scrub, coastal salt marsh and willow scrub. “Native vegetation increased from to, a 23 percent gain.”[11]

The project cost $14.7 million and the improvements have allowed “the utilitarian basin to function more like a public park.”[12]

History

The location where the basin now sits was originally part of the Ballona Wetlands and after settlement had a stint as farmland.[13] Oxford Basin as we know it today was built in 1959 during the creation of the Marina Del Rey small-boat harbor “on the site of an old municipal dump, to prevent flooding in nearby communities.”[14] (“Several of the streets and properties in the area surrounding Oxford Basin are near or below the high-tide level in the marina.”)[15]

In 1963 it was named the Marina Del Rey County Bird Conservation Area thanks in part to advocacy by the Audubon Society.[16] It was hoped that the refuge would attract species like the wood ibis, elegant tern, least tern and tree duck, and be “ideal for the birds due to its tidal action. The rhythm of the tides tells the birds when to eat and otherwise adjust their lives.” Over the years it developed into “a little habitat with an odd assortment of birds and other animals and non-native plants and trees.”[17] A population of abandoned livestock (primarily rabbits, chickens and domestic ducks) lived at so-called “Duck Pond” until the 1980s; “visitors could see a guinea hen sunning itself outside a rabbit warren, a black swan staying cool in the shade and three ducks padding around a watering hole.”[18] These introduced species were removed to other county parks in 1989 due to complains about noise and odor.

Prior to the restoration some considered the basin a “muddy puddle” or a “foul-smelling eyesore.”[19] A 2010 survey of invertebrates at the muddy puddle found “85 terrestrial and marine taxa (two mollusks, eight spiders, 67 insects, and eight other arthropods).”

Access

Limited street parking is available on Washington Blvd. and at nearby park and beach lots.

Transit access includes bus stops serviced by Culver CityBus Line 1[20] and Big Blue Bus Line 18,[21] as well as Playa Vista’s summer beach shuttle service. Marina Del Rey also offers a seasonal WaterBus ferry service that stops nearby.[22]

L.A. County's coastal bike trail (Marvin Braude Bike Trail) passes by the basin, just west of Yvonne B. Burke Park.[23]

See also

External links

Notes and References

  1. Moran, Julio. "Turn Flood Basin Into Wetland, Environmental Group Asks" Los Angeles Times, Apr 30, 1989, pp. 2.
  2. News: 1963-03-24 . County Opens Refuge for Migratory Birds: Conservation Area by Marina May Help Bring Back Near-Extinct Species . CS1 . Los Angeles Times.
  3. Fiesler . Emile . Drake . Tracy . 2016-04-27 . Macro-invertebrate Biodiversity of a Coastal Prairie with Vernal Pool Habitat . Biodiversity Data Journal . 4 . 4 . e6732 . 10.3897/BDJ.4.e6732 . 1314-2828 . 4867691 . 27226744 . free .
  4. Web site: 2014 . Oxford Basin Project Documents . California Coastal Commission . 2022-08-21 . 2017-02-16 . https://web.archive.org/web/20170216212947/https://documents.coastal.ca.gov/reports/2014/6/F10b-6-2014.pdf . live .
  5. Web site: Oxford Basin . 2022-08-21 . pw.lacounty.gov . 2022-08-21 . https://web.archive.org/web/20220821022534/https://pw.lacounty.gov/swp/oxfordbasin/about . live .
  6. Cooper . Daniel S. . Hamilton . Robert A. . 2010-11-17 . Birds and Wildlife of Oxford Basin . County of Los Angeles . ResearchGate.com.
  7. Web site: Oxford Lagoon, Los Angeles County, CA, US - eBird Hotspot . 2022-08-21 . ebird.org . en . 2022-08-21 . https://web.archive.org/web/20220821032507/https://ebird.org/hotspot/L1827410 . live .
  8. Web site: 2016-09-12 . Important Bird Areas: Ballona Wetlands (Ballona Valley) . 2022-08-21 . Audubon Society . en . 2021-02-25 . https://web.archive.org/web/20210225084354/https://www.audubon.org/important-bird-areas/ballona-wetlands-ballona-valley . live .
  9. Web site: Dryden . Carley . 2014-12-09 . Environmentalists irate over removal of trees in Marina del Rey's Oxford Lagoon . 2022-08-21 . Daily Breeze . en-US . 2015-02-19 . https://web.archive.org/web/20150219101300/http://www.dailybreeze.com/environment-and-nature/20141209/environmentalists-irate-over-removal-of-trees-in-marina-del-reys-oxford-lagoon . live .
  10. Web site: 2016-07-08 . Marina Del Rey's Oxford Basin gets a makeover . 2022-08-21 . KPCC - NPR News for Southern California - 89.3 FM . en . 2022-08-21 . https://web.archive.org/web/20220821041847/https://www.kpcc.org/2016-07-07/marina-del-rey-s-oxford-basin-gets-a-makeover . live .
  11. Web site: 2021-04-19 . Oxford Retention Basin . 2022-08-21 . Institute for Sustainable Infrastructure . en-US . 2021-06-20 . https://web.archive.org/web/20210620000630/https://sustainableinfrastructure.org/project-awards/oxford-retention-basin-multiuse-enhancement-project/ . live .
  12. Web site: Sharp . Steven . 2015-07-22 . Improvements Underway at Marina Del Rey's Oxford Basin . 2022-08-21 . Urbanize LA . en . 2022-09-14 . https://web.archive.org/web/20220914194806/https://la.urbanize.city/post/improvements-underway-marina-del-reys-oxford-basin . live .
  13. Web site: Jensen . Danny . 2015-07-23 . A Big Muddy Puddle In Marina Del Rey Will Become A Beautiful New Park . 2022-08-21 . LAist . en . 2022-08-21 . https://web.archive.org/web/20220821044157/https://laist.com/news/marina-del-rey-oxford-basin . live .
  14. Web site: Chiland . Elijah . 2016-07-08 . You Can Now Enjoy a Lovely Walk Around Marina del Rey's Oxford Basin . 2022-08-21 . Curbed LA . en . 2021-10-27 . https://web.archive.org/web/20211027065845/https://la.curbed.com/2016/7/8/12129102/oxford-basin-marina-del-rey-park . live .
  15. Web site: 2015-03-18 . Marina del Rey's Oxford Retention Basin Multi-Use Enhancement Project . 2022-08-21 . MDR Condos . en-US . 2022-08-21 . https://web.archive.org/web/20220821042700/https://www.mdrcondos.com/marina-del-reys-oxford-retention-basin-multi-use-enhancement-project/ . live .
  16. Oxford Basin informational sign - The Life & Times of Oxford Basin
  17. Gold . Bobbi . Svensson . Josh . Spring 2012 . The Oxford Basin Makeover . Ballona Creek Renaissance Newsletter . 32 . 8–9 . 2022-08-21 . 2021-07-25 . https://web.archive.org/web/20210725120105/https://ballonacreek.org/wp-content/uploads/2015/05/bcrnews32.pdf . live .
  18. Ito, Sheldon, "A Respite From Rejection," Los Angeles Times, Jun 23, 1988, pp. 2.
  19. Web site: Sklar . Debbie L. . 2016-07-07 . Stink no more in Marina del Rey: Hooray for new lagoon . 2022-08-21 . City News Service . en-US . 2020-11-24 . https://web.archive.org/web/20201124014410/https://mynewsla.com/government/2016/07/07/stink-no-more-in-marina-del-rey-hooray-for-new-lagoon/ . live .
  20. Web site: Line 1 - Washington Blvd . 2022-08-21 . www.culvercitybus.com . en-US . 2022-08-21 . https://web.archive.org/web/20220821060157/https://www.culvercitybus.com/Bus-Schedules/Line-1-Washington-Blvd . live .
  21. Web site: Route 18 - UCLA - Abbot Kinney - Marina del Rey - Big Blue Bus . 2022-08-21 . www.bigbluebus.com . 2022-08-21 . https://web.archive.org/web/20220821060157/https://www.bigbluebus.com/routes-and-schedules/route-18.aspx . live .
  22. Web site: Waterbus Stops . 2022-08-21 . Marina del Rey Water Bus . en-US . 2022-08-21 . https://web.archive.org/web/20220821051818/https://marinawaterbus.com/waterbus-stops/ . live .
  23. Web site: Marvin Braude Bike Trail Map . 2022-08-21 . 2022-07-17 . https://web.archive.org/web/20220717133012/http://file.lacounty.gov/SDSInter/dbh/docs/189949_2013-BIKEMAP85x11Web-Ready(highres).pdf . live .

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