Natural Treatment Site: Marshburn

Natural Treatment Site: Marshburn

Marshburn NTS site

The Marshburn NTS basin is located with the Marshburn 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.  Unlike the Trabuco site, however, Marshburn NTS pools have maintained a healthy buffer of vegetation, thus making the site somewhat better at removing targeted nutrients. 

Portions of the site are also operated and maintained by the City of Irvine as well.  This site is primarily surrounded by undeveloped land, and agricultural uses.  As urbanization fills in, the site is expected to see higher flows and removal rates.

The site has adequate removal rates for nutrients including nitrogen and phosphate.  Suspended solids, and total coliform removals rates were good as well. Selenium removal rates were within the standard range.  

 Location & Size


L
ocation: Off Irvine Blvd., between 133 and Lambert
Size: 22.4 acres
Tributary Watershed: 11,000 acres
Status: On line, August 2008

 Biological Values


Marshburn has  better vegetation coverage around pools, and therefore, better wildlife. 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.

Major Repairs: None during this fiscal year. The outlet is planned to be ugraded next fiscal year.
Major Improvements: None during this year

Latest News

happy-to-see-green-thank-our-purple-pipes
Happy to See Green? Thank Our Purple PipesLet’s be honest. We love our treelined streets, verdant medians and common areas that define the Irvine Ranch Water District. And while other communities are cutting back on their landscaping, ours continues to flourish. Since 1963, IRWD has been implementing a...
chilling-with-recycled-water-irwd-and-uci-team-up-to-save-80-million-gallons-of-drinking-water-a-year
Chilling with Recycled Water: IRWD, UCI Save 80 Million Gallons of Drinking Water a YearUC Irvine and Irvine Ranch Water District officials toss ceremonial buckets of water into the cooling towers to kick off the new project. (Shown here, right to left, are UCI Associate Chancellor for Sustainability Wendell Brase, IRWD Board President Douglas...
how-the-irwd-team-safeguards-your-water
How the IRWD Team Safeguards Your WaterThanks to all of the IRWD customers who joined us July 10 for our Tap Water 101 community workshop. If you missed it, check out our new 3-minute video, “Journey of a Water Sample.” You’ll tag along with real IRWD...