Quick and easy access to recreational privileges in Iowa, including hunting, fishing, and specialty licenses:
Purchase Your Licenses Online
Buy your Hunting and Fishing license online today! We offer multi-year packages and combos for whatever you need to stay licensed.
Support conservation in Iowa by buying a natural resource plate for your vehicle.
Make your online reservation for state park cabins, camping sites and lodges.
Iowa DNR Customer Service
Mon - Fri, 8:00am - 4:30pm CST
Submit Online Inquiry
Information / Records Requests
Contact Information by County
Due to lack of resources, Iowa's Big Tree Program is currently on hold. Applications for Big Tree nominations will still be accepted. Processing of the applications will not occur until further notice. Sorry for any inconvenience. Continue looking for big trees. Big Tree Program Donation Form
Iowa's Big Tree program is designed to locate the largest tree of various specimens in our state. The purpose is to give special recognition to big trees, focus attention on trees in general, and have to engage in some friendly competition. For information on how to nominate and measure trees for the program and for a list of Iowa's current champion big trees, check out our Big Trees of Iowa document.
Iowa Big Tree List
There is also a National Registry of Big Trees that recognizes champion trees of 826 species and varieties. In fact, Iowa's program is set up using much of the same criteria as the national program. Iowa has one champion on the list: a European Alder in Scott county. For more information on the National Registry of Big Trees visit the American Forests, P.O. box 2000, Washington DC 20013; 202-737-1944.
The 1996 Famous and Historical Trees of Iowa can be found on the State of Iowa Library Services site here:
Famous and Historical Trees of Iowa