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Located on the Mississippi River in Camanche, IA. Open in the summer months Memorial Day-Labor Day, during the posted hours only if weather is permitting.

Frentress Lake Marine Center is a full-service Hydro hoist and EZ Dock dealer in East Dubuque, IL. We sell and install boat lifts, docks and hoists in Iowa, Wisconsin and Illinois. We do commercial, residential and marine management. We do it all when it comes to docks and lifts: there's no job to big or small for us. We also offer other major brands of lifts and dock, please call for more information.

Frentress Lake Marine Center is an authorized Monterey boat and Manitou pontoon boat dealer in East Dubuque Illinois, near Dubuque, Cedar Rapids, Davenport, Waterloo and Iowa City, Iowa. We offer new and used boats for sale including cruisers, sport yachts, bowriders and pontoon boats, along with Mercury and Evinrude outboards. We also sell and install E-Z Dock boat docks and lifts, and offer outboard repairs and other marine services and boat parts.

Hartwick Marina has been in business on Lake Delhi since 1932. We are a full line Mercury dealer dedicated to bringing you a competitive price and outstanding service. We are also a certified warranty center for all the brands we sell. We have been a Princecraft dealer for 18 years, offering a complete line of aluminum pontoons, deck boats, fishing, and jon boats. Princecraft has an unsurpassed level of quality, fit, and finish. In 2019, we added Harris pontoons. Harris is one of the foremost designers and manufacturers of custom and luxury pontoons. They are manufactured in Fort Wayne, Indiana. We are proud to be able to carry their line of pontoons. The Lowe boat line was added to our fleet in 2020. These boats are quality made and affordable for any family’s boating needs. Hartwick also offers Shorestation lifts and docking systems along with a full line of Yacht Club, Shorelander and EZ Loader trailers. We provide pontoon rentals, lift rentals, bait, ice, gas, and carry-out beer & pop. Our accessory department covers anything else you need to enjoy your time on the water. When the boating season is over, we offer complete winterization services and year round indoor/outdoor storage and shrink-wrapping. Hartwick Marina is your ONLY full service marina on Lake Delhi!