** AWARDS ISSUED PRIOR TO JANUARY 20, 2025, WERE FUNDED UNDER PREVIOUS ADMINISTRATIONS AND MAY NOT REFLECT THE PRIORITIES AND POLICIES OF THE CURRENT ADMINISTRATION.** ALTHOUGH SUBSURFACE DRAINAGE IS ESSENTIAL FOR CROP PRODUCTION, IT CAN CAUSE ENVIRONMENTAL CHALLENGES SUCH AS EUTROPHICATION OF WATERWAYS OR LAKES. RESEARCH HAS SHOWN THAT CONTROLLED DRAINAGE HAS PROMISING WATER-QUALITY BENEFITS IN THE MIDWEST USA, BUT IT HAS NOT BEEN WIDELY ADOPTED. THE MAIN REASONS ARE: (1) LACK OF DECISION-SUPPORT TOOLS TO SHOW SITE-SPECIFIC WATER-QUALITY BENEFITS, AND (2) LACK OF FARM-SPECIFIC COST-BENEFIT INFORMATION. HOWEVER, NO DECISION-SUPPORT TOOL PROVIDES SUCH INFORMATION FOR CONTROLLED DRAINAGE. THEREFORE, THERE IS A CRITICAL NEED FOR AN ONLINE TOOL TO HELP FARMERS SEE THE VALUE OF INSTALLING CONTROLLED DRAINAGE ON THEIR FARMS TO ACCELERATE THE ADOPTION OF CONTROLLED DRAINAGE. WITHOUT SUCH A TOOL, THE CURRENT RATE OF VOLUNTARY ADOPTION OF CONTROLLED DRAINAGE IS UNLIKELY TO ADDRESS THE ENVIRONMENTAL CHALLENGES OF DRAINAGE.THE OBJECTIVES ARE TO: (1) DEVELOP AN EDUCATIONAL DECISION-SUPPORT TOOL FOR CONTROLLED DRAINAGE TO HELP FARMERS AND STAKEHOLDERS MAKE INFORMED SITE-SPECIFIC DECISIONS, AND (2) EVALUATE THE EFFECTIVENESS OF THE TOOL IN INCREASING THE ADOPTION OF CONTROLLED DRAINAGE. THE EXTENSION COMPONENT FOCUSES ON WHETHER FARMERS WILL BE MORE LIKELY TO ADOPT A CONSERVATION DRAINAGE PRACTICE IF THEY HAD A SITE-SPECIFIC ESTIMATE OF THE ENVIRONMENTAL BENEFIT AND COST-BENEFIT INFORMATION OF THE PRACTICES. THEN, WE WILL USE THE FARMER FEEDBACK TO ENHANCE THE TOOL.THE OVERALL IMPACT OF THIS PROJECT WILL BE TO HELP STAKEHOLDERS MAKE CHOICES THAT ALIGN WITH THEIR ECONOMIC INTERESTS WHILE ALSO PROMOTING ENVIRONMENTAL STEWARDSHIP