2024 43 USC 1600c – Colorado River Floodway

2023 43 USC 1600c – Colorado River Floodway

2022 43 USC 1600c – Colorado River Floodway

2021 43 USC 1600c – Colorado River Floodway

2020 43 USC 1600c – Colorado River Floodway

2018 43 USC 1600c – Colorado River Floodway

2017 43 USC 1600c – Colorado River Floodway

2015 43 USC 1600c – Colorado River Floodway

2014 43 USC 1600c – Colorado River Floodway

2013 43 USC 1600c – Colorado River Floodway

2012 43 USC 1600c – Colorado River Floodway

2010 43 USC 1600c – Colorado River Floodway