Maine’s Largest & Richest Ice Fishing Derbies The Sebago Lake Derby and Cumberland County Derby are Maine’s largest and richest ice fishing derbies! Sponsored by the Sebago Lake Rotary Club in Windham, Maine. 2021 Ice Fishing Derby Dates Sebago Derby:  Saturday & Sunday, February 20st and 21st, 2021 Cumberland County Derby: Saturday & Sunday, February … Continue reading About