Newsletter Signup

To be added to the SIOSA email list to receive the quarterly SIOSA newsletter and information on events, email

Upcoming Events

Saturday, June 23, 8:00 AM: Prairie Walk at Bobwhite State Park, Wayne County — Walk the Prairie Trail and learn about prairie wildlife and restoration work that has been done.

Sunday, July 22, 9:00 AM – 12 noon at Slip Bluff County Park, Decatur County — Monarch and Milkweed Monitoring. Monitoring for Monarchs, milkweeds and nectar plants was done at Slip Bluff County Park at three areas of the park in 2016 and one area of the park in 2017. In 2018, monitoring using the Monarch Larval Monitoring Project protocol will continue with a field day for the public to learn about the monitoring and participate. Monarch density and milkweed density studies will be done on the east side of the lake and possibly in the East Oak Savanna area. A list of flowering plants will also be made. Educational materials will be provided. Drinks and snacks will be provided. Email if you plan to participate.

Next SIOSA board meeting

The next regular SIOSA meeting is Wednesday, April 4 at 1:00 pm.  We will be meeting at the Clarke County Conservation Board headquarters at East Lake Park.  The park is located just east of Osceola on Hwy 34.

Membership/Contact Us


A new exclusive benefit for members: SIOSA will now lend out restoration equipment to members. Please email Items that can be borrowed include: nomex shirts, fire brooms, drip torches, fire rakes, bladder bags and slip-on pump units.

Click here for terms of equipment use


Support Oak Savanna Habitat Restoration by Joining SIOSA!

Members will receive a quarterly newsletter and will be invited to participate in fun activities relating to oak savannas throughout the year!

Annual Membership Rates

  • Student Member $10
  • Savanna Friend $25
  • Supporting Member $100
  • Sustaining Member $250
  • Savanna Steward $500

Please click here to download our membership form



Contact Us

President – Casey Campbell
Vice President – Bill Brown
Treasurer/Secretary – Dick Hillyard
Administrative Assistant – Veronica Mecko

John Orvis
Dick Hillyard
Rich Erke
Dave Whittlesey
Casey Campbell
Bruce Nelson
Andrew Kellner
Nancy Forrest
Bill Brown
Bill and Sibylla Brown
John and Sharon Orvis
Paul and Karla Gunzenhauser
Dick and Nancy Hillyard
SIOSA Mailing Address: 21654 295th Ave, Leon Iowa, 50144
SIOSA Email Address: