Wisconsin's 15,000 lakes. The DNR partners with the University of Wisconsin - Extension and citizens around the state to help protect and maintain these amazing natural resources while providing some of the best recreational opportunities in the nation. More than 600 lake organizations and thousands of volunteers play a leadership role in the stewardship of Wisconsin's lakes.

Find a Lake, Lake Water Quality Data, Lake Maps, Plants and Aquatic invasive Insects - are all linked to this site.

Volunteers, DNR staff, county staff and others collect water clarity, temperature and dissolved oxygen, as well as other water quality data, on lakes across Wisconsin. Around 1,000 volunteers are currently active, and the network has been going strong since 1986. Water clarity is measured with a black and white disk called a "Secchi Disk".

Satellite images are used to retrieve water clarity data for lakes across the state. This effort began in 1999 when the University of Wisconsin-Madison Environmental Remote Sensing Center (ERSC) developed a model for the retrieval of water clarity data from satellite images and Citizen Lake Monitoring Network volunteers provided on-the-ground Secchi data to calibrate this model for each satellite image. Water clarity data was retrieved for over 8,000 lakes statewide between 1999 and 2001. The DNR continues to analyze data in this way today in its remote sensing program.

Wisconsin's Tornadoes for the current and a link to find historical tornadoes from past years (shown on map with details of each tornado). From National Weather Service.

The Wisconsin Environmental Mesonet (WiscoNet) is a growing network of weather and soil monitoring stations across Wisconsin, designed to provide high quality data at high spatial and temporal resolutions. There are currently 14 Wisconet stations with plans to expand to around 90 by 2026. Each Wisconet station provides more than one dozen measurements every 5 minutes.

The stations measure temperature, dew point, wind, rain, soil moisture and temperature, and more.

You can view data through an interactive map or a list of stations.

Wisconsin DNR's Wisconsin Wetland Inventory geodatabase, containing wetland polygons and points.

The principal focus of the wetland inventory is to produce wetland maps that are graphic representations of the type, size and location of wetlands in Wisconsin. Currently, there are two different datasets that have been created using different mapping methods and technologies.

The majority of the state was mapped using traditional stereo-pair, black-and-white, infrared photography. Within this context, the objective was to provide reconnaissance level information on the location, type, size of these habitats such that they are accurate at the nominal scale of the 1:24,000 (1 inch = 2000 feet) base map.

LiDAR Technology:
LiDAR has advanced the ability to see and map wetland and surface water features.

New wetland mapping is underway in areas across the state at a nominal scale of 1:2000 (1 inch = 166.7 feet). The data are being mapped according to the National Wetland Inventory standards using new methods. Please see the WWI SOP for more information.

At the turn of the 20th century, most American cities of any size had a family-run department store (or two or more) entrenched in their downtowns. By New York, Chicago, or Philadelphia standards, Wisconsin department stores were small and modest, but they served their communities well. In this exhibit, you'll learn about and see images of Wisconsin's bustling department stores along with the impacts those stores had on their communities and the people they employed.

Wisconsin farmers, artisans, and other vendors work hard all year to prepare for farmers’ markets in order to provide goods to the local community. Many Wisconsin residents “buy local” to support their farmers, and the myriad of market locations around the state allow locals to do so.

The photographs in this slideshow portray the farmers’ markets – a variety including general markets, roadside stands, and co-ops – of the past.

This exhibit highlights multiple forms of memoirs written by Wisconsin residents. In viewing these accounts, we are doing more than merely reading a document – we are experiencing the life of another individual at a different time. For the people who wrote these letters, diaries, poems, and journals, the act of writing brought personal comfort, solidarity, relief and preservation of connections to friends and family. For readers, these memoirs provide historical evidence and insight into the Wisconsin experience.

The Champion Tree Program recognizes and celebrates the state’s largest trees. The Wisconsin Department of Natural Resources began documenting these trees in 1941 with the help of the community. People around the state discovered these trees in the Northwoods, in neighbors’ yards and along city streets. The program has endured as a result of people such as yourself. We invite you to join us in honoring and preserving Wisconsin’s natural resources heritage.

This is a map showing the location and severity of each of the Earthquakes which have occurred in Wisconsin in recorded history. This site is also where one can find recent or historic earthquakes, lists, information on selected significant earthquakes, earthquake resources by state, or find webservices.

Fishing in Wisconsin's waters is enjoyed by many, but only a few anglers apply their skills to the extent that they catch a verified record fish. The Wisconsin Department of Natural Resources (DNR) recognizes anglers who have legally taken the largest fish on record by hook and line and those fish that have been taken by alternate methods (for example, spearing or bow fishing).

Live release record fish category
Hook and line records
Alternate method records (spear, bow and arrow, crossbow)
The DNR does not keep line-class or lake-specific records. However, you may contact the National Freshwater Fishing Hall of Fame [exit DNR] for national line class records.

DO YOU THINK YOU'VE CAUGHT A RECORD FISH?
If you think you or someone you know has caught a fish that might be a state record, there are several things you should do:

don't clean or freeze the fish
keep the fish cool - preferably on ice
get the fish weighed as soon as possible on a certified scale (found in grocery, hardware stores, etc.) and witnessed by an observer
contact the nearest DNR office to get the fish species positively identified and to find out whether the fish is a state record
obtain and complete a record fish application [PDF]
An official record fish application must accompany all prospective record fish entries.

Wisconsin Department of Natural Resources dataset of current Wolf population and distribution of wolf packs found throughout Wisconsin.

Following a federal court ruling on Feb. 10, 2022, gray wolves are listed as an endangered species in the lower 48 states (excluding the northern Rocky Mountains region). As such, wolves are federally protected. Harvest and lethal depredation control are prohibited.

Wisconsin's wolf population remains healthy and secure in the state. The department will continue its robust wolf population monitoring program and the development of an updated wolf management plan.

The DNR will continue to partner with USDA-Wildlife Services to address wolf conflicts in Wisconsin. If you suspect wolves in the depredation of livestock, pets or hunting dogs, or if wolves are exhibiting threatening or dangerous behavior, contact USDA-Wildlife Services staff immediately. If in northern Wisconsin, call 1-800-228-1368 or 715-369-5221; in southern Wisconsin, call 1-800-433-0663 or 920-324-4514. While gray wolves are listed as a federally endangered species, it remains unlawful to shoot a wolf unless there is an immediate threat to human safety.

This lesson looks at how womenŐs role in the campaign against alcohol consumption in antebellum America reflected the strengths and limitations of the cult of domesticity in the Nineteenth Century United States. America in Class Lessons are tailored to meet the Common Core State Standards. The Lessons present challenging primary resources in a classroom-ready format, with background information and analytical strategies that enable teachers and students to subject texts and images to the close reading called for in the Standards.

This resource can be used when teaching students how to evaluate expressions that have parentheses. The resource includes a short (5min) video as well as a 12 slide presentation that could be used in a number of ways. The video could be viewed by students as a preview to the lesson, during the lesson, or after the lesson as a review. It also could be used as a remediation tool for students who are struggling with parenthese use in mathematics. The slide presentation could be used by the teacher as a lesson guide.

Students keep journals in which they respond in writing to Dorothea Lange's photographs.

Third-grade students from Deans Mill School talk about how to write stories that entertain the reader.  This is a student podcast.

Math in Three Acts by Dan Meyers are three part math tasks that engage students through thought provoking videos. The main question students engage with is "What's the probability of getting a yellow starburst in a package of starburst?" Students will think about what they information they need to determine this in Act 2. Student then predict the experimental probability based on the theoretical probability in Act 3.

Yoga can be easily introduced to young children using this video.  It helps children with motor movements, coordination and balance.