Topic Thread

  • 1.  Fire ants in bioretention basin

    Posted 10 days ago

    Hi everyone,

    I'd like to ask if anyone has experience with fire ants in bioretention cells and how to control it?

    We are monitoring water quality and hydraulic performance of multiple bioretention cells and one of them is infested with fire ants. We've been applying hot water to their mounds, and they are slowly migrating but still persistent.
    I'd appreciate any recommendations on effective methods for eliminating fire ants with the least impact (no chemicals), since we are monitoring the water quality of the outflow. Also what could be their impact on overall performance of the bioretention cell? Is the hydraulic conductivity of the cell significantly impacted by their tunnels leading to changes in the performance of the cell?


    Abtin Shahrokh Hamedani

    PhD Candidate, University of Texas at San Antonio

    Abtin Shahrokh Hamedani Ph.D., A.M.ASCE
    San Antonio TX

  • 2.  RE: Fire ants in bioretention basin

    Posted 7 days ago
    The periodic flooding doesn't drown them out?

    Close the bottom orifice for a couple storms?

    Ann Wingert P.E., M.ASCE
    Project Engineer
    Stroudsburg PA

  • 3.  RE: Fire ants in bioretention basin

    Posted 5 days ago
    Beneficial nematodes.

    Robert Thomas EIT, A.M.ASCE
    Qualified Member of the Engine Department (QMED)
    Waxahachie TX