This project seeks to inform the development of a Payment for Watershed Services (PWS) scheme in Southeast Maine by examining the system of incentives needed to encourage private forest owners to adopt conservation best management practices that enhance water quality downstream. Integrating conservation priorities, landowner attitudes, institutional factors, and regulatory drivers, this analysis focuses on ensuring the supply of high quality water. This supply-side framework is intended to complement the clients' demand-side efforts to make the business case for investing in watershed protection. While focused on the Crooked River and broader Sebago Lake watershed, which provides drinking water for the Portland metropolitan area, the project approaches this localized study as a specific case to identify biophysical, social, political and economic factors that favor or hinder the scaling up of PWS schemes.