Finding GIS data for your projects or research can be a time consuming process. At the American Geographical Society Library at UW-Milwaukee we can help by providing access to files from our geospatial data collection or empowering you to search for, find, and use data on your own. Whatever your geospatial data needs may be, we are here to help.
The AGSL provides access to a large collection of geospatial data, including GIS data (with particular emphasis on Southeastern Wisconsin), aerial and satellite images, and more. If you are having trouble finding the data you need, please contact us, as we may be able to get it for you.
You can request data from us at any time by clicking the "Data Request Form" link on the left side of this page or you may call or visit the AGS Library during our regular hours (M-F 8-4:30).
This guide is intended to be an informational resource to aid in your geospatial data discovery. With increasing frequency, geospatial data can be readily found from online sources.
Portions of this guide are still in progress. We encourage you to contact us if you have any suggestions.
Milwaukee accident data is no longer available on the COMPASS platform. There is data on the City of Milwaukee Open Data Portal for traffic accidents, but only the location and report number are available.
More robust data can be requested through the AGSL. We will work with the Wisconsin Department of Transportation to request the data. It is not recommended that UW users attempt to request the data directly form the DOT.
For Milwaukee accident data, use our Finding GIS Data COMPASS Library Guide.
To find accident data for states or at the national level, check out Data.gov.
For a Milwaukee County-wide addressable buildings layer, please fill out our Data Request Form.
To download world addresses, please find OpenAddresses.
To learn how to use aerial photography, satellite, and lidar data, and links to the best sources for downloading this data for free, visit our Finding GIS Data Aerial Imagery Homepage.
For Wisconsin Aerial Imagery in the AGSL Collection, learn to use our AGSL Aerial Photo Finder
For questions about the best way to obtain high-resolution local imagery, email us at firstname.lastname@example.org or fill out our Data Request Form.
There are many places to quickly download the boundaries you need.
For City of Milwaukee parcels, neighborhood, aldermanic and police district boundaries visit the Map Milwaukee Portal.
For any boundary data you do not see in this tab, send us an email at email@example.com or fill out our Data Request Form.
To request other building data, please email us at firstname.lastname@example.org or fill out our Data Request Form.
To learn more about finding and working with built environment data, please visit our Built Environment Homepage.
The AGSL wants you to feel confident finding and using social demographic data.
To learn about using social demographic data, please visit our Social Demographic Data Homepage.
For a tutorial on how to use TIGER Products for census feature shapefiles and how to access large quantities of census geography, please find our TIGER Products Libguide.
For questions about how to find and use U.S. Census or American Community Survey (ACS) data please email us at email@example.com or fill out our Data Request Form.
To learn how to use the National Oceanic and Atmospheric Administration's (NOAA) Dataset Gallery, please find their Climate Data Primer.
Milwaukee crime data is no longer available on the COMPASS platform. Crime data is available on the City of Milwaukee Open Data Portal.
For Milwaukee crime data, use our Finding GIS Data COMPASS Libguide.
To obtain crime data at the national level, please find Data.gov
To obtain crime rate at the national level, please find FBI - Uniform Crime Reporting
Free to use statistical crime software
Demographic and Population Data
Also see Census
To obtain information about population, race, sex, or any other demographic in the United States, you will want to turn to the U.S. census.
To learn more, please find our Social Demographic Data Homepage.
Public opinion polling data is available for download via the Pew Research Center.
If you have any questions about finding or using demographic data, please do not hesitate to email us at firstname.lastname@example.org, or fill out our Data Request Form.
Elevation is usually represented in one of two ways in GIS. The first is the familiar contour line. Contour lines are the vector representation of elevation and use isolines to connect areas of the same elevation. Contour lines follow a contour interval or the amount of elevation gained or lost in between lines. Typically these range from 1ft to 10 ft. Steeper slopes are represented by lines that are closer together. More gentile slopes are represented by lines that are farther apart.
The other popular method of representing elevation in GIS is a Digital Elevation Model or DEM. This representation represents the raster model and uses individual pixels, with each pixel assigned an elevation value. Typically these will use feet or meters to represent the elevation. The size of the cell is a very important consideration. The smaller the cell size, the more detailed the elevation data. Traditionally, these DEMs were created using aerial photography and (less often) RADAR. Today, LiDAR is becoming a popular data collection method for elevation.
Speaking of LiDAR. Elevation may also be available in the form of LiDAR derived DEMs or as "point clouds" (LAS datasets). LiDAR data collection is a form of remote sensing that measures how long it takes laser pulses to bounce off of objects and return to the sensor. The unique properties of lasers allow the light to pass through translucent objects such as trees to create three-dimensional representations of the surface of the earth and objects on the ground. Popular derived DEMs include "bare-earth" and "height above ground".
Contour lines are available at the 1:24,000 scale from The National Map for the United States and US Territories. Many counties and some municipalities make this data available as well. We have contour line data for much of Wisconsin in our geospatial data collection. Please use the Data Request Form to request this data.
DEMs are also available on the national map at a cell size of 1/9 Arc Second for the highest resolution. LiDAR derived DEMs are often available at the county level and can have 5 foot or smaller cell sizes, allowing for the creation of detailed contour lines or for advanced flow analysis using ArcGIS and SWAT.
LiDAR derived DEMs in Wisconsin are available on WisconsinView.
For more information, see the Elevation/LiDAR data page from the Wisconsin State Cartographer's Office.
Environmental Corridors are large areas of connected, protected land.
The AGSL archives environmental corridor data from the Southeast Wisconsin Regional Planning Committee (SEWRPC) for the following counties:
Information about invasive species in Wisconsin can be found via the Southeastern Wisconsin Invasive Species Consortium.
To view prevalent invasive species in Southeastern Wisconsin, please find an Invasive Species Roadside Survey Map.
For nationwide database and mapping tools and training pertaining to invasive species, please find Early Detection & Distribution Mapping Systems (EDDMAPS) Tools.
For questions about this, or any other data, please email us at email@example.com, or fill out the AGSL Data Request Form.
The American Geographical Society Library archives land use polygons made available via the Southeastern Wisconsin Regional Planning Commission (SEWRPC). Land use data for the following counties can be acquired by filling out the AGSL Data Request Form:
National land cover data can be downloaded directly from the National Land Cover Database (NLCD). The most recent year available is 2011.
The City of Milwaukee offers a neighborhood shapefile for download via their Map Milwaukee Portal.
To learn more about Milwaukee Neighborhoods, please find the Milwaukee Neighborhoods Library Guide.
To request other neighborhood data, or if you have any questions, please email us at firstname.lastname@example.org or fill out our Data Request Form.
Wisconsin Statewide Parcels are available via the State Cartographer's Office Statewide Parcel Initiative.
Many counties make their parcels available on their county land information websites.
Milwaukee county parcels can be obtained from the MCLIO open data portal.
The City of Milwaukee updates their parcels every week, and they can be downloaded via the Map Milwaukee Portal.
The parcel file contains only shape information and a taxkey. The taxkey can be used to join the parcels to a Master Property File or Master Address Index. Many City of Milwaukee datasets can be used in combination with Parcel and MPROP data.
To learn how to use and interpret MPROP data, please find our Libguide.
The AGSL archives parcels, MPROP, and MAI weekly. The data is available by request using our Data Request Form.
Real Estate and Property Data
To find detailed information about property ownership and use of buildings in the City of Milwaukee, please find MPROP, and our Libguide explaining how to use MPROP and how to interpret building use codes.
We archive MPROP weekly. To request this or any other property data, please do not hesitate to email us at gisdata@uwm or fill out our Data Request Form.
Sidewalk data can be extracted from the Milwaukee County-wide Topo/Planimetric Geodatabase made available via MCLIO - Libguide.
To request sidewalk data directly from the AGSL, please fill out our Data Request Form.
Please find the U.S. Department of Agriculture Web Soil Survey Interactive Download Map.
Milwaukee city streets can be downloaded using the Dime file available via the City of Milwaukee Map Milwaukee Portal.
To access Wisconsin statewide street data, please fill out our AGSL Data Request Form.
At the AGSL, we want you to feel confident finding GIS data and converting it to your own needs.
Topography can mean anything from natural environmental features like elevation, to man-made features like buildings and roads.
To learn more about working with man-made features, please visit our Built Environment Homepage.
In order to enable GIS data for use in autoCAD, it must be brought into ArcMap, and exported as a .dwg file.
ArcMap is available on most computers in the library, and in many computer labs on campus.
To learn how to prepare GIS data for use in AutoCAD using ArcMap, please find these step-by-step instructions.
If you have any questions about this process, or wish to request data already in CAD format, please email us at email@example.com or fill out our Data Request Form.
From the Wisconsin DOT traffic count website: "Traffic counts are reported as the number of vehicles expected to pass a given location on an average day of the year. This value is called the "annual average daily traffic" or AADT and are represented on traffic count or traffic volume maps. The AADT is based on a short-term traffic count, usually 48 hours, taken at the location. This count is then adjusted for the variation in traffic volume throughout the year and the average number of axles per vehicle. Short-term counts are collected over a three-year cycle at nearly 26,000 rural and urban locations throughout the state."
This information can be viewed via the "Roadrunner" interactive map.
This data is also contained in the WISLR database that can be requested from the AGSL. For more information about WISLR, see the Wisconsin DOT webpage on the topic.
Water and Hydrology Data
See the Wisconsin State Cartographer's Page on Rivers, Lakes and Streams Data.
The Wisconsin DNR 1:24,000 scale hydro geodatabase is recommended for projects in Wisconsin requiring a high degree of authority and accuracy. It's available for download from the Wisconsin DNR's open data portal or by using our Data Request Form.
Please find the Global Lakes and Wetlands database, available for download via the World Wildlife Foundation.
Federal government wetland inventory data files can be obtained from the National Wetlands Inventory.
Wisconsin wetlands data can be obtained from the Wisconsin DNR for $15 per PLSS township using their Data Request Form.
Please find the Global Lakes and Wetlands database, available for download via the World Wildlife Foundation.
The AGSL holds wetlands data from the Southeastern Wisconsin Regional Planning Commission (SEWRPC), this data is an extract of the SEWRPC Land Use datasets.
Please use our Data Request Form to order wetlands data for:
The AGSL can only distribute this data to UW-System affiliated users for educational use. All other users should contact SEWRPC directly.
Zoning is the process of dividing land in a municipality into zones (e.g. residential, industrial) in which certain land uses are permitted or prohibited. The type of zone determines whether planning permission for a given development is granted. Zoning may specify a variety of outright and conditional uses of land. It may also indicate the size and dimensions of land area as well as the form and scale of buildings. These guidelines are set in order to guide urban growth and development (Wikipedia).
Wisconsin Statewide zoning data can be obtained from the website of the Wisconsin Statewide Parcel Map Project.
For Southeastern Wisconsin, the AGS Library holds zoning data from individual counties and municipalities as well as the SEWRPC Regional Consolidated Zoning dataset. Please request this data using our Data Request Form.
What are people requesting from the AGSL?
This word cloud represents the most used words in data requests from 2014-2017.
Top 10 topics: Milwaukee, county, shapefile, city, census, Wisconsin, park, area, water, aerial
The Contents of Finding and Using GIS Data may be reused with attribution for Non-Commercial purposes.
Finding and Using GIS Data by Board of Regents of the University of Wisconsin System is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License.