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June 13, 2021 11:07AM
June 13, 2021 11:07AM
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customer care

Natural Treatment Site: Trabuco

Trabuco NTS site

The Trabuco NTS basin is located with the Trabuco Flood Control Basin, which is owned and operated by the Orange County Flood Control District.  As such, the site is regularly flooded and fills rapidly after storm events. Portions of the site are also operated and maintained by the City of Irvine. 

The site has adequate rates of removal for nutrients such as nitrogen, phosphorus, and selenium, as well as for suspended solids. Some erosion in the site has been repaired in 2020. 

Went online August 2008.

 Location & Size


Location: 13952.5 Jeffrey Road, Irvine
Size: 18.4 acres
Tributary Watershed: 22,000 acres

 Biological Values


The following nesting bird species were observed on the site:Marsh Wren, Bewick’s Wren, House Wren, Mallard, Western Bluebird, House Finch, Black Phoebe, Tree Swallow, Common Yellowthroat, Song Sparrow, American Crow, Greater Roadrunner, Yellow Warbler, Mourning Dove, Yellow-breasted Chat, American Coot, Bullock’s Oriole, Ash-throated Flycatcher, American Robin, Cooper’s Hawk, Red-shouldered Hawk. Additional wildlife observations are planned for next year's report.

 Maintenance


Routine Maintenance Activities:

  • TruGreen LandCare provides routine irrigation and landscape maintenance services at the site. Additional work such as mulch replacement, irrigation repairs, aquatic herbicide application, aquatic vegetation removal, and sediment removal were performed throughout the year.

  • System operations staff performed weekly site inspection, water quality monitoring, and landscape and irrigation maintenance review.