Preface; Sponsor: 2012 SREE conference on hydraulic engineering; Evaluation and selection on multi-dimensional regulation schemes for water cycle system: A case study of Haihe River basin; Characteristics of uniform turbulent flow with steep slopes; Multi-objective function based on sensitivity for calibration Xinanjiang model; Study on longitudinal dispersion caused by vertical shear in ice-covered rivers; Distribution scheme study of the Guhai pump-water project from Yellow River in salt chemical industry park; Burst detection in water distribution systems based on artificial immune system; The application of SWMM model based on GIS in the piedmont rain control: A case study in Beiwucun gravel pit of Beijing, China; Study on applications of neural network to flood forecasting in Yiluo River; Application of Ensemble Kalman filter in parameter calibration of Muskingum model; Discussion on the selection of influent water quality of municipal wastewater treatment plant; Application of progressive optimality algorithm to cascade reservoir optimal operation in flood control; The effect of train load and water coupling to track crack growth; A spatial decision support system for water resource management of Yellow River Basin in China; On energy dissipation of hydraulic jumps at low Froude numbers considering bubbles formation and transportation process; Research on time-varying resistance attenuation law of hydraulic steel gate members; Near-dam reach propagation characteristics of daily regulated unsteady flow released from Xiangjiaba Hydropower Station; Study on flood storage and water logging control in Huainan mining subsidence area; Research of CCS Hydropower Station Bieri sand-flushing facility test; Model design comparative experiment of reservoir sediment transport piping suction head; Study on the key technique of the control system adjustment for the Yellow River estuary model; Long-term water temperature simulation for Miyun Reservoir; Regulated deficit irrigation effects on Tomato growth and irrigation water use efficiency; Reservoir self-suction sediment transport piping practice and research progress; Application of steel fiber reinforced shotcrete in dam strengthening project; An experiment about diversion recharge in Sibaishu Haize Lake of Jingbian county; Numerical model of the spiral flow in the 90° elbow; Drainage system vulnerability analysis of Beijing under the rainstorm; Study on the reservoirs ecological operation in Shule River irrigation area; A simple approach for tunnel face stability in soft ground; Novel computational implementations for stability analysis of rock masses; The 2nd SREE workshop on environment and safety engineering.