2024 33 USC 27b – Chicago River, West arm of South Fork of South Branch

2023 33 USC 27b – Chicago River, West arm of South Fork of South Branch

2022 33 USC 27b – Chicago River, West arm of South Fork of South Branch

2021 33 USC 27b – Chicago River, West arm of South Fork of South Branch

2020 33 USC 27b – Chicago River, West arm of South Fork of South Branch

2018 33 USC 27b – Chicago River, West arm of South Fork of South Branch

2017 33 USC 27b – Chicago River, West arm of South Fork of South Branch

2015 33 USC 27b – Chicago River, West arm of South Fork of South Branch

2014 33 USC 27b – Chicago River, West arm of South Fork of South Branch