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Use the Public Portal
to complete an ER Preliminary Assessment.
Request a review
for proposed development activities, planning and land management projects.
Receive training
for DNR staff and those seeking NHI license agreements.
Conduct reviews
by becoming a Certified ER Reviewer.
Access NHI data
for research and planning purposes.
Contact information
For more information about the ER Review Program, please consult the following list:
ER Review staff contacts

Requesting detailed data access

Detailed Natural Heritage Inventory (NHI) data is granted for one of the following purposes: research, educational, environmental, land management or other similar authorized purpose. There are two ways to request detailed NHI data – a one-time request and an NHI data license.

What type of data request is right for you?

Choose from one of these options.

  • One-time data request - This request is for a small number of records or data from a limited geographical area. No additional training is required. Cost: $75/hr staff time.
  • NHI data license - This license is for ongoing access to NHI data for the initial planning of multiple projects or tasks, or for a large geographical area. Additional training is required and can be completed online for $250 per trainee (training is valid for 5 years). Cost: varies based on geographic area requested. (see below)

How much does it cost?

It depends on the number of counties requested.

Number of Counties NHI Portal/GIS Shapefile
Up to 4 $850
5 or more $1,500

Request detailed data

Follow the steps below.

  1. Submit an NHI Data Request Form [PDF]*
  2. Read the guidance document

*Having trouble viewing this form in your internet browser? Save it to your desktop by right-clicking the link and then choosing "Save target as..." or "Save link as..." Then open the desktop file with Adobe Reader. You can also try opening the form in a different browser, like Internet Explorer. For Mac users: to right-click with a single button mouse, hold the control key while clicking.

Request results, not access

If you need NHI data for an upcoming project, you can get results for your site through an Endangered Resources Review or Proposed Review (conducted by a certified reviewer). These reviews constitute a letter including NHI data for your site and required actions and recommendations needed to comply with Wisconsin state and federal endangered species laws.

Last revised: Monday July 17 2017