Mapping Invasives

Citizen scientists and natural resources managers use online GIS-based programs to:
  • map and record the impacts of the invader
  • assess the impact of the species
  • track their treatment methods
There are several online options, depending:
  • user: citizen volunteer or professional land manager
  • invader: plant or animal

Mapping Tools in use in Oregon

Oregon Invasive Species Hotline

The Oregon Invasive Species Hotline provides an easy way for the public to report suspected invasive species sightings, either by phone or a web reporting tool Reports are sent to a network of experts in Oregon who can help identify the species and give advice on its management.

Oregon WeedMapper

WeedMapper was developed by the Oregon Department of Agriculture (ODA). A collection of spatial information on the distribution of noxious weeds listed by ODA. It is designed to help facilitate weed identification, reporting, and verification.

was developed through a partnership between The Nature Conservancy, NatureServe, the New York Natural Heritage Program, and Florida Natural Areas Inventory, iMapInvasives allows  land managers, regional planners, and others who are working to prevent, control or manage invasive species to accurately and quickly record and track where all types of invasive plants, animals, fish, and insects are found and how they are being managed. 

is the public access web site of the National Agricultural Pest Information System, the agricultural pest tracking database of the US Department of Agriculture Animal and Plant Health Inspection Service Plant Protection and Quarantine Cooperative Agricultural Pest Survey.

USGS’s Non-Indigenous Aquatic Species 
USGS NAS tracks aquatic vertebrate and invertebrate animals nationwide and provides fact sheets about these species.

The Oregon Invasive Species Council and iMapInvasives



The Oregon Invasive Species Council brought iMapInvasives to Oregon in 2011 and continues to endorse this program because it:  

  • Tracks a variety of plants and animals
  • Allows for recording of observation and management data
  • Provides various levels of access to protect sensitive information
  • Incorporates data from WeedMapper, the Hotline, USGS NAS, and others so that users can access much of Oregon’s invasive information at a single site.

Lindsey Wise with the Oregon Biodiversity Information Center at Portland State University manages the site and coordinates data upload, account creation, training materials, data sharing, and working with the national iMapInvasives team.


Western Invasives Network Coordinator Vern Holm serves as a liaison so that a coordinated effort between iMapInvasives and the agencies and organizations represented by the Council is sustained. Contact Vern if you have:

  • Questions about iMapInvasives
  • Donations to support this work
  • An interest in contributing data