Access NHI data
for research and planning purposes.
Wisconsin's rare species and natural communities.
a plant or non-game animal. [exit DNR]
the natural heritage working list.
Contact information
For more information on NHI data, contact:
Julie Bleser
NHI data manager

Natural Heritage InventoryTools for accessing data

The Natural Heritage Inventory database is the most comprehensive source of rare species data for Wisconsin. These data are used for a variety of purposes including research, land management, state land master planning, community planning, conservation planning and review of public and private activities across the state. There are a number of ways to access the information, depending on your needs.

Some of the tools are appropriate for general planning and assessment purposes only and should not be used for screening or reviewing a proposed land development or land management project for potential impacts to endangered resources. That kind of review must often be done by the department. Please contact the ER Review Program if you need information about whether a proposed project may impact rare species or other sensitive resources.

Find county data

County tool
Rare species and natural features on the Natural Heritage Working List that have been documented in each county.
*For general planning and assessment purposes only.

Find township data

Township tool
Rare species and natural features that have been documented in a given township minus certain sensitive species.
*For general planning and assessment purposes only.

Use the Public Portal

Public Portal
Online mapping application for landowners planning on-the-ground projects to learn if their project may have impacts to endangered resources.
*For general planning and assessment purposes only.

Get detailed NHI data

Detailed data
Location-specific Natural Heritage Inventory data. Learn about various options that
may be available for you, as well as the associated fees and training requirements.

Last revised: November 2, 2020
Douglas County Bayfield County Iron County Vilas County Forest County Florence County Oneida County Langlade County Langlade County Lincoln County Price County Taylor County Taylor County Rusk County Barron County Sawyer County Sawyer County Washburn County Burnett County Polk County St. Croix County Dunn County Pierce County Pepin County Chippewa County Chippewa County Eau Claire County Buffalo County Clark County Trempealeau County Jackson County Marathon County Wood County Portage County Juneau County Adams County Monroe County La Crosse County Marinette County Oconto County Brown County Door County Door County Manitowoc County Outagamie County Waupaca County Waushara County Winnebago County Calumet County Fond du Lac County Marquette County Sheboygan County Washington County Ozaukee County Milwaukee County Waukesha County Kenosha County Walworth County Racine County Dodge County Jefferson County Columbia County Sauk County Richland County Rock County Dane County Green County Layfette County Iowa County Grant County Crawford County Kewaunee County Green Lake County Vernon County Ashland County Menominee County Shawano County