NAS Alert System

The Nonindigenous Aquatic Species Alert Risk Mapper (ARM), was developed to characterize the waterbodies at potential risk of invasion from a new nonindigenous species sighting. The ARM tool is a short-term risk assessment utilizing a nonindigenous species' current extents and development of credible scenarios of its potential movement within a drainage based on its mobility and drainage barriers (dams). Maps from ARM will indicate lakes, river reaches, and other waterbodies that are at potential risk of invasion from a new nonindigenous species sighting and will accompany the NAS Alert emails sent out to subscribers and managers. Currently, ARM is only available for the Southeast US but it will be expanded to the whole contiguous US and Hawaii by 2019.