The 100th Meridian Initiative is a cooperative effort between local, state, provincial, regional and federal agencies to prevent the westward spread of zebra/quagga mussels and other aquatic nuisance species in North America. More Information.

If you need to notify authorities regarding an aquatic invasive species, please call our National Hotline: 1-877-STOP-ANS (1-877-786-7267).
The hotline is answered by a live person 24/7/365.

Where are the mussels?
Want to know which western waterbodies are considered to be either “positive” for quagga or zebra (Dreissenid) mussels or for a “critical” invasive plant species? Take a look at our List of Critical Waters.

New Report on Early Detection
Reliability of Early Detection of Dreissena spp. Larvae by Cross Polarized Light Microscopy, Image Flow Cytometry, and Polymerase Chain Reaction Assays Results of a Community Double-Blind Round Robin Study (Round Robin Study Phase II). Marc E. Frischer, Sandra A. Nierzwicki-Bauer, and Kevin L. Kelly.

Download the full report at www.MusselMonitoring.com

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On-Line Training Certificate: If you are a boater, angler, or aquatic recreational user, then you can benefit from our short, on-line educational training designed to teach you four simple steps that you can follow to Stop Aquatic Hitchhikers! This training will only take a few minutes and at the end you will get a certificate that you can show authorities to demonstrate that you are doing your part. On-line training starts here.