NAS - Nonindigenous Aquatic Species
This page allows you to query for an up-to-date listing of nonindigenous
species by major hydrologic unit. You may either select the area of interest
from the scrolled list on the left, or by clicking on the map below.
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. . Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [4/1/2023].
Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.
For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.