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  • ANS Acoustic Telemetry Fact Sheet

    OverviewTelemetry is an automated communications process used to collect data remotely by a monitoring system.  The Chicago District Telemetry Monitoring Project implants fish with individually-coded, ultrasonic transmitters in the Upper Illinois Waterway (IWW) and Chicago Area Waterways System (CAWS) to track patterns of fish activity. Transmitted

  • ANS Electrofishing Fact Sheet

    OverviewElectrofishing is a monitoring tool that uses a pulsed direct current electric field, emitted from a boat mounted generator powered pulser to temporarily stun fish. The fish can then be collected via dip net to allow biologists the opportunity to identify species.  Electrofishing is used by the Asian Carp Regional Coordinating Committee’s

  • ANS Frequently Asked Question

    Frequently Asked QuestionsWhat are you doing to prevent the spread of Asian carp?The Corps is committed to sustaining our water resources and protecting our natural treasures, our Great Lakes.The Corps is a member of the Asian Carp Regional Coordinating Committee, which is comprised of various federal and state agencies with niche roles and

  • Aquatic Nuisance Species

    Aquatic nuisance species are nonindigenous species that threaten the diversity or abundance of native species or the ecological stability of infested waters, or commercial, agricultural, aquacultural or recreational activities dependent on such waters. See Section 1003(2) of the Nonindigenous Aquatic Nuisance Prevention and Control Act of 1990, 16 U.S.C. § 4702(1) (2010).

  • Chicago Sanitary and Ship Canal (CSSC) Dispersal Barriers

    The Chicago Sanitary and Ship Canal (CSSC) is a man-made waterway that connects the Chicago and the Des Plaines Rivers forming an aquatic connection between Lake Michigan and the Mississippi River basin. Dispersal barriers were constructed to generate an in-water electric field to prevent the spread of invasive fish species between these watersheds.