The Revolving Water Fund model relies on the development and adoption of an “Environmental Impact Unit,” which translates pollutant reductions from agriculture-based conservation practices into salable units of measure. The EIU employs commonly accepted pollution removal rates and applies geographically specific regulatory and land use constructs to align conservation supply and demand across the watershed, introducing a market mechanism for pollutant reduction. If successfully implemented, this ground-breaking metrics model will provide a proxy for sustained watershed investment programs across the United States.