Appalachian Trail Environmental Monitoring- Counties with Zebra Mussels in the AT Corridor (broadly defined)

This dataset was created for the Appalachian Trail Environmental Monitoring Community project funded by the National Biological Information Infrastructure-Southern Appalachian Information Node (NBII-SAIN) at the University of Tennessee in Knoxville, TN. The goal of the project is through collaboration among willing partners, to establish a 2,167 mile continental transect dedicated to environmental inventory and monitoring (I&M) via the Appalachian Trail (AT) Corridor. This goal will be realized by the creation of an internet Community on the USGS NBII Portal concerning the environmental I&M on the AT Corridor. A database of publicly available key ecosystem data themes was defined, and the data harvested from various sources. The purpose of these compiled data sets is to place the state of the environment along the A.T. in a continental-scale context in one centralized location. With assistance from the USGS Eastern Region Geospatial Program Office, these datasets will be implemented via an online data viewer located on the USGS CUES website. This data set is a compilation of reports of confirmed zebra mussel sightings in the Eastern U.S. AT Corridor from 1988 to September 2002. It provides geographical and historical information to show distribution over time. The reports came from a variety of federal, State, and municipal agencies, public utilities, universities, engineering and private consultant firms.