Our Mission

Friends of Interstate and Straight Lake State Parks is a non-profit organization established with the purpose of supporting, assisting, and promoting the Wisconsin Department of Natural Resources with interpretive, scientific, historical, educational, and related visitor services at Wisconsin Interstate and Straight Lake State Parks.

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Upcoming Events

October 14, 2026

Friends members, please join us for our Annual Meeting and an evening of good food, conversation and a special program! We’ll share some of what we’ve accomplished this year, talk about what’s ahead for the Friends and our parks, elect new board members, celebrate volunteers and most importantly, spend some time together!

Check out the Events Page for more details.

Latest Happenings

Anniversary and Fall Fun!

The weekend of September 19 and 20 was loaded with lots of fun and and activities for all who visited the park. More than 225 visitors took part in the activities and programs as we celebrated the start of fall and Interstate Park's 126th anniversary. We want to thank...

Exploring Interstate Park!

The September 4 Nature Storytime group ventured out on the trails for an exciting and educational hike in the area of the old Silverbrook Mansion site.  In exploring this area of Interstate Park, the kids of Nature Storytime saw many interesting features, including an...

Journaling with Colored Pencils

This past weekend, individuals attended a journaling workshop at Interstate Park, led by Lauren Hefty, a member of the St. Paul Artist Collective.  Instead of using only words, this workshop focused on the creation of nature journals using colored pencils and the...

A Bug’s Life

Water insect hunt at Lake o' the Dalles.  One bug, two bugs, three bugs, four - we kept hunting 'til we found many more! Beach day was a blast! Everyone had a net or a cup to catch water insects. Water strider nymphs and some larvae were caught and identified with...

Slithering Fun!

More than 50 people of all ages visited Interstate Park this past weekend to learn more about reptiles. This opportunity was provided by the Friends of Interstate and Straight Lake State Parks with a hands-on experience provided by the Snake Discovery Zoo. The crowd...

CCC Camp Interstate

Governor Evers joins park staff and volunteers to plant a tree for the 125th Anniversary.

“We can take it!” – The motto was often cited to celebrate the “can-do” spirit of the nearly 3 million men who passed through the program, emphasizing that they could face the challenges of the job and, by extension, the challenges of life during the 1930s.

Click on the buttons below to learn more about the Civilian Conservation Corps and their role in making Interstate Park what it is today!

A Wisconsin State Park System vehicle admission sticker is required on all motor vehicles stopping in state parks, forests and recreation areas.

Admission stickers can be purchased online or at most individual properties. (Remember, an annual pass is now valid for 12 months from the time of purchase.)

Celebrating 125 Years!

September 20, 2025 marked a special day for Interstate Park.  Individuals from around the state and region came to help us celebrate this milestone!

The day was packed with history and programs throughout the park.  Park visitors, DNR staff and Wisconsin Governor Tony Evers participated in the day’s festivities.  Events included nature journaling, learning to rock climb, guided hikes on the Pothole Trail with the Traprock Chapter of the Ice Age Trail, History of the Wisconsin State Park System, the history of the Silverbrook Mansion, the Civilian Conservation Corp (CCC) and so much more!

The year’s not over, and there’s still more to come.  Watch for information on our Annual Meeting and Fall Festival in October!

A few photos from the 125th Celebration!

Follow us on social media for the latest updates! Our Facebook feed is below.

 

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Members, Sponsors and Partners

A special Thank You to our community partners who’s generosity and support help us deliver outdoor educational and recreational activities throughout the year.

Andrie Electric
City of St. Croix Falls
Village Pizzeria
ABC Building<br />
Falls Chamber of Commerce
Village of Osceola, WI
J&S General Contracting
Osceola Chamber
Wild Rivers Conservancy
Trollhaugen Ski and Snowboard
Wisconsin DNR
Ice Age Trail