Determination Standards and Monitoring System Construction for Ecological Flow of Huangcaoba Reservoir

ZHAO Xiaojie; JIANG Yunpeng; YANG Jie

doi:10.3969/j.issn.1004-7328.2026.增刊1.002

Abstract：With the intelligent transformation of water resources management,the scientific determination and precise monitoring of ecological flow have become crucial to ensuring river and lake ecological security.Taking Huangcaoba Reservoir in Yunnan Province as the research object,this paper systematically investigates ecological flow determination and monitoring informatization application,with comprehensive consideration of aquatic ecosystem stability,water environment quality,and downstream domestic and production water demands.Through multiple-scheme comparison and envelope calculation using the Tennant method,R2-Cross method,ecological hydraulic method,and 7Q10 method,the results indicate that,to meet hydraulic habitat standards in different periods,the recommended ecological flow is 1.58 m³/s for the wet season(June-November,accounting for 30%of the multi-year average flow at the dam site)and 0.79 m³/s for the dry season(December-May of the following year,accounting for 15%of the multi-year average flow at the dam site).Aiming at the difficulty of precise reservoir dispatching according to natural inflow,a monitoring system covering information perception,communication network,and application management platform is established.This system integrates technologies including radar velocimeter online monitoring,Beidou satellite communication,and video surveillance,realizing real-time monitoring,compliance analysis,and abnormal alarm functions for discharged flow.The research findings not only establish scientific discharge standards,but also achieve closed-loop control of discharged flow through informatization means,providing strong support for scientific management of basin ecological flow and optimal reservoir dispatching.