The Illinois Fertilizer & Chemical Association is expanding its watershed partnership effort into a more formal structure in the Lake Vermilion watershed. This project is modeled on the Lake Spring field watershed partnership, which has been very successful in helping to manage the lake nitrate levels. The goal is to use N-WATCH™ to improve nitrogen management decisions throughout the growing season and implement a consistent number of N-rate trials to develop a MRTN for the Lake Vermilion watershed. Joining IFCA in this effort are the Vermilion County Farm Bureau, Vermilion County SWCD, and Aqua Illinois.