TY - JOUR AU - Chen, Shaojun AU - Xiu, Jixing PY - 2026 TI - “Umbrella-style co-governance”: Practice of the river chief system in urban grassroots river governance JO - Journal of Economics of Water Resources SN - 1003-9511 SP - 33 EP - 39 VL - 44 IS - 1 AB - As ecological civilization has been elevated to a national strategic goal, urban grassroots river governance faces the dual challenges of systemic transformation and capacity enhancement. This paper summarizes an innovative river governance model: “umbrella-style co-governance”, a collaborative mechanism combining government leadership with social participation. Through structural, procedural, and technological coordination, participants form a governance system characterized by collaboration and coordination, flattened information flow, and closed-loop problem resolution, thereby improving response speed, resource allocation efficiency, and public participation. The findings indicate that the “umbrella-style co-governance”can help construct a collaborative governance structure characterized by complementary functions and operational autonomy, significantly enhancing end-level river and lake governance efficiency and implementation capacity. Through institutionalized social embeddedness, “umbrella-style co-governance” model promotes sustained multi-actor participation and strengthens ecological, social, and institutional outcomes. UR - https://doi.org/10.3880/j.issn.10039511.2026.01.004 DO - 10.3880/j.issn.10039511.2026.01.004