Draw Down Structure, Swan Lake State Park, Carroll County

The Iowa Department of Natural Resources is seeking bids for the installation of new draw down pipes, valve, and wet well, including a temporary coffer dam at Swan Lake State Park in Carroll County. The project documents, including plans, specifications, proposal forms, and addenda, are available at Beeline and Blue. The bid closing date and time are 4/23/2026 at 11:00 AM CST. • The project includes installation of new draw down pipes, valve, and wet well. • A temporary coffer dam will be included in the project. • The project is located at Swan Lake State Park in Carroll County. • The bid closing date and time are 4/23/2026 at 11:00 AM CST.