What are the key ingredients of successful collaborative partnerships? What worked well and what did not? If we had to do it all over again, what would we do differently? This document, based on interviews with stakeholders from 11 watershed partnerships in the Colorado River Basin, discusses the successes and challenges encountered from initial partnership formation to maintaining momentum over the years. It informs how RiversEdge West and other partners can continue contributing to the long-term success and viability of watershed partnerships.