NAS - Nonindigenous Aquatic Species

Northern Snakehead Sightings Distribution

This map layer is a compilation of confirmed northern snakehead sighting reports in the United States 1997 through 2011 and is updated daily. It provides geographical and historical information to show distribution over space and time. The reports come primarily from State agencies in the region. These data are intended for geographic display and analysis at the national level, and for large regional areas. Sightings were reported with varying levels of accuracy. The data should be displayed and analyzed at scales appropriate for 1:2,000,000-scale data. No responsibility is assumed by the U.S. Geological Survey in the use of these data. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data.

Northern snakeheads are represented with larger red markers. Click on a marker for more information. To REPORT an observation or collection of snakeheads, click here.

Suggested citation: Benson, A. J. 2014. Northern snakehead sightings distribution. Retrieved 12/21/2014 from

For more information, contact: Amy Benson,

References to non-U.S. Department of the Interior (DOI) products do not constitute an endorsement by the DOI. By viewing the Google Maps API on this web site the user agrees to these TERMS of Service set forth by Google.

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Page Contact Information: Pam Fuller - NAS Program (
Page Last Modified: Monday, October 28, 2013


The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2014]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/21/2014].

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