The document discusses three case studies of hybrid drainage projects in Iowa that combined drainage improvements with wetland solutions to improve water quality. At the Kossuth County site, a nutrient reduction wetland was designed to outlet district tiles and reduce nutrients. For the Osceola County site, a storage pond-style wetland was proposed to reduce costs compared to expanding tile sizes. Hyrbid solutions provided water quality benefits while also addressing drainage challenges like reducing peak flows and outdated infrastructure.