1Adhering to the Unified River Basin Planning and Promoting the High-Quality Development of Water Conservancy in the Haihe River Basin in the New StageYUAN Jun1-42Analysis on the Water Quality of the Upstream Water System in Core Area of Beijing and Treatment SuggestionsSU Rui, SU Tao, HE Pei-yang, ZHANG Yang13-183Design Scale Demonstration of Tidal Retaining and Drainage Gate in the Coastal Hilly AreaBAO Wen-an, GUO Pan-pan, HAO Qing-fang34-364Analysis on Floods in the Shandong Section of the Lower Yellow River in the Late Qing DynastyWANG Qiong-xian, TIAN Yi, GU Shuai, WANG Shang-yi46-505Study on the improved hydraulic radius method for the calculation of ecological base flow in Juma RiverZHAO Ben-long, KOU Li-qing, ZHAO Jian-yong66-68,736Analysis on the Flow Delay Time of the Second Class Reach from Zhentouba to ShapingGUO Shuang, LONG Yan, WANG Xiao-qun, MA Fang-ping81-86,1067Application Progress of Groundwater Pollution Traceability TechnologyWANG Yi, WANG Jun-zhao93-968Stability Analysis of Earth-Rock Dam under Seismic Seepage CouplingGUI Xue-yan, DONG Xiao-li101-1069Analysis on the Safety and Stability Review of Gate Chamber StructureYANG Qi-long107-110,12210Study on Stress Stability of Reinforced Gate Structure under the Influence of Tensioned Prestress ConstructionZENG Jun-ping111-114,12611Study on Experimental Failure of Multi-Size Concrete for Slope Protection of the Huaihe RiverYIN Yong-bao115-11912Application of NJG Vacuum Laser Collimation System in the Panjiakou Reservoir DamLI Hai-xing, HAN Yong, LIU Hai-jun123-126