Took the Nanyang section of the South-to-North Water Diversion Project as an example, by analyzing the regional and engineering characteristics, types of ecological risks, and governance practices, the key links of collaborative governance were analyzed. A mechanism construction idea was proposed based on the premise of responsibility division, support of information sharing, handling of monitoring and early warning and emergency linkage as the main focus, guarantee of coordinated law enforcement and daily supervision as the support, and support of funds, personnel, and assessment and evaluation as the basis. Further optimization paths were proposed in aspects such as source reduction and ecological restoration of small watersheds, ecological compensation and behavioral incentives, resilience management during sensitive periods, social co-governance and improvement of grassroots capabilities, and full life-cycle management of projects, to promote the collaborative governance of major engineering water source areas under the constraint of high-standard water supply.

major engineering  /  water source protection  /  ecological collaborative governance  /  south-to-north water diversion project (middle route)