State Cartographer's Office
State Cartographer's Office

Heritage Oak Project

We Need Your Help!

Visit the Interactive Heritage Oak Map to help us document historically significant oak trees in Dane County.

See instructions below on “How to Document Your Oak.”

Please contact us if you have any questions!

In 1976, local conservationist, preservationist, writer and assistant to the Wisconsin DNR secretary, Walter Scott, wrote, “Without question, the Madison area has a rich heritage in these venerable [oak] trees which are a living link with our past and challenge for the future.” Scott thereby initiated what is now called the Heritage Oak Project as a nod to both the previously dominant oak communities native to Dane County and the U.S. Bicentennial of our country’s independence. With an appeal to newspaper readers and the help of others, Scott attempted to identify as many 200 year or older oak trees as possible within an eight-mile radius of the Capitol.

Do you have a “Heritage Oak” in your yard?

Scott was successful in recording the measurements and locations of 443 oak trees on both public and private land. In 2001, arborist Bruce Allison (then of the Dane County Tree Board) traced Scott’s footsteps and determined that approximately half of these oaks remained alive while the other half had died of old age, been cut down for new development, or simply could not be located due to inaccurate previous location descriptions. While Allison took inventory of the oaks, he used GPS technology to log their exact location to make future work easier.

Today, the Tree Board, the Capital Area Regional Planning Commission (CARPC) and the University of Wisconsin State Cartographer’s Office are continuing Scott and Allison’s work by collaborating on a third round of inventorying what remains of the original list of oaks. They are now 250 years or older! Take a look at the Interactive Heritage Oak Map to see what we have already done.

We Need Your Help!

Scott also wrote, “How many [oaks] can we preserve for the Tricentennial in 2076? This would require a determined effort to keep them alive and well along with a willingness to allow for a place for them in an environment rapidly filling with asphalt and concrete developments.”

This is where you come in! There are still several specimens of once dominant oak trees scattered throughout city streets, backyards, parks, farmland and forests of Dane County. We are trying to add as many of these as we can to the inventory of the Heritage Oak Project.

We’re hoping that the general public (that’s you!) can help us in the following ways.

  1. You may have a Heritage Oak on your property that is already on Scott’s original list. If so, you can help us update the information we have for it.
  2. You may know about a Heritage Oak that is not in our inventory. If so, you can help us add it to the inventory.
  3. Spread the word! Tell your friends and neighbors about our project.
  4. Protect your oaks! Not only do these oaks provide environmental and economic benefits to the communities we live in, they are also living, historical artifacts.

How to Document Your Oak

Identify your oak tree! Use the Wisconsin Urban Tree Key. If you can’t figure out what kind of oak you have, don’t worry about it. Take pictures of the leaves, the bark and the whole tree. You will be able to upload them later and the people at the Project will do their best to identify it.

Measure your tree! At 4.5 feet from the base of the tree, local 200 year old white or bur oaks have a circumference of 10 feet. Pin, black or red oak have a circumference of 14’. Trees can have funny shapes, so check out these instructions from the Wisconsin DNR on how to measure the circumference of a tree.

Crowdsource! Add your oak measurements and photographs to our inventory using the Interactive Heritage Oak Map.

  • If you are using a device with a large screen/window, click on the information icon at the left of the screen and then click on “Add new tree to inventory” and follow the prompts.

  • If you are using a device with a small screen/window, click on the information icon at the bottom of the screen and then click on “Add new tree to inventory” and follow the prompts.

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