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Zebra Mussel Monitoring Program for Texas

The zebra mussel is an invasive species that has spread rapidly in the United States. The first confirmed detection of zebra mussels in Texas occurred in 2009 at Lake Texoma along the Texas–Oklahoma border. The U.S. Geological Survey (USGS) Zebra Mussel Monitoring Program for Texas (ZMMP) began in April 2010 and has expanded over time in response to the continued spread of zebra mussels in Texas.

The ZMMP provides early detection and monitoring of invasive zebra and quagga mussels in Texas lakes and waterways using four methods:

  • Collecting and analyzing water samples for juveniles (veligers)
  • Monitoring mussel collection and growth on artificial substrates
  • Underwater SCUBA and video inspection
  • Collecting and analyzing water-quality (water temperature, pH, salinity, etc.) data

Adult and juvenile zebra mussels


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