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Welcome to WISE-Decade 

Wisconsin’s Local Redistricting Group is pleased to announce the Local Redistricting Training Webinar Series

LTSB's Open Data Page: 
(Active Collection Layers are automatically updated when a county uploads data)
Statewide municipal wards, municipal boundaries, and county supervisory districts
WISE-Decade Platform: 
(Users need credentials to log in)
The WISE-Decade platform is a suite of mapping tools developed to assist Wisconsin counties and municipalities with legislative and legal requirements mandated by state law 5.15(4)(br)1.


The following applications will help
streamline and simplify these required processes:






Important WISE-Decade Information

About the Blog: 

You can stay current on all things "WISE-Decade" by reading and commenting on our blog. We're always open to suggestions in order to make the process of collecting boundaries easier for everyone. Make sure to subscribe to the blog by submitting your email address so you won't miss any important announcements and will always be notified when a new entry is posted.

Consolidated BAS & Data Collection Mapping Tool


What is BAS/CBAS?

The U.S. Census Bureau conducts the Boundary and Annexation Survey (BAS) annually to collect information about selected legally defined geographic areas. The BAS is used to update information about the legal boundaries and names of all governmental units in the United States. The Census Bureau uses the boundary information collected in the BAS to tabulate data for the decennial and economic censuses, and annual estimates and surveys such as the Population Estimates Program and the American Community Survey.

To reduce the burden on local governments, and avoid the duplication of efforts, the Census Bureau offers consolidation agreements under the ‘Consolidated BAS’ (CBAS) program to counties that are interested in submitting boundary changes on behalf of the legal governments (incorporated places and minor civil divisions) within their jurisdiction. Once a local government agrees to the consolidation, the local government will no longer receive BAS materials from the Census. Instead, the county BAS respondent will be solely responsible for providing LTSB with all boundary updates. Then LTSB will submit all data on behalf of the state to the Census Bureau. For more information about BAS/CBAS, please refer to the Census Bureau's website

Why did we create WISE-Decade CBAS?

Wisconsin local and legislative redistricting is mandated by our state's constitution to use U.S. Census tabulated geography for creating districts. Historically, most counties and municipalities have not participated in BAS; therefore Census TIGER lines do not correctly align with local data in Wisconsin. To minimize the effort it takes for locals to submit data to the Census, we had previously created a desktop ArcGIS ArcMap Add-In that was widely well-received, but providing data and application updates for the user base has been difficult. To further minimize local efforts, and eliminate these types of issues, we have created a web based application utilizing ArcGIS Server and the ArcGIS JavaScript API.

What does the CBAS/Data Collection application do?

The CBAS/Data Collection application compares U.S. Census Bureau geography with local municipal data to generate a symmetrical difference, automatically enters the required attributes, filters for Census defined acceptable changes, and flags potential annexations not yet submitted to, or absorbed by, the U.S. Census Bureau. If you need help using WISE-Decade CBAS application, please refer to: WISE-Decade CBAS/Data Collection Tool Help Documentation.







WISE-LR: Wisconsin Shape Editor for Local Redistricting

The third generation of WISE-LR is now available

As with previous versions, the primary purpose of WISE-LR is for local government officials to draw their ward and supervisory districts. Additionally, the site may be used by any geographic boundaries where population matters! This may include school districts, special tax districts, aldermanic districts or many others. The system is designed to allow easy collaboration, data sharing, and data file creation. This will be the same system used in local redistricting in 2021, but the system will be available for any of these other uses as a module of WISE Decade.

If you need help using the WISE-LR application, please refer to: WISE-LR Help Documentation.



LTSB GIS & Map Services
17 West Main Street, Suite 200
Madison, WI 53703-3305
(608) 283-1830