International Symposium on Modern Technology of Dams (Oct 12-14, 2007, Chengdu CHINA) Reports Session I: Effective Utilization of Exiting Dams, New Technical progress on high dams The dam construction in Yangtze River Three Gorges Project GENG Jun Development of a High Speed Plane Pouring Method for RCD Dams (Japan) Toshiharu FUETA Reservoir System Operation Using Adaptive Sampling Implicit Stochastic Optimization Model with Risk of Water Quality Standard Violation and Uncertainty of Inflow Forecast (Korea) Han Goo LEE Effects of freezing and thawing in embankment dams Sweden) Sven Knutsson The program and its latest research advance of high arch dam of the joint fund of Yalong River Hydropower Development NSFC WU Shiyong Effectiveness of Re-bars around An Additional Discharge Pipe in Concrete Gravity Dam Body (Japan) Yoshikazu YAMAGUCHI Modified CFRD by Changing Dam Section and Filling Material in Yecheon Pumped Storage Power Plant(Korea) Young-ki LEE Study on Stability Security of Dam and Foundation of Wudu Hydro Project (China) ZHANG Lin Seepage Monitoring in Embankment Dams Using Distributed Temperature Sensing in Optical Fibres-Experiences from Some Swedish Dams(Sweden) Sam Johansson Strength and Durability Study for High Arch Dam Concrete Desigh (China) LI Jiajin Halvfari Dam–Hydraulic Concerns and Rebuilding (Sweden) James Yang Session II: Dam Safety Development, Coexistence of the Environment and dams Overview of Integrated Management of the Three Gorges Reservoir (China) CAI Zhiguo 1 Monitoring of Vertical Water Quqlity Profile and Development of Water Quality Management in Dam Reservoir (Japan) Ken USHIJIMA Advanced Operation and Management of Multipurpose Dam for Ecological Conservation (Korea) Jinwon SEO Geostatistical data and stochastic-physical analysis as a basis for estimating risk of internal erosion (Sweden) Anders Wörman Safe Management for Large Dams in China Xu Zeping Environmental Conservation at TOKUYAMA Dam (Japan) Takeshi SUYAMA Safety Evaluation and Monitoring of Seepage Flow & Osmotic Pressure in Yele Dam Chen Jianchun Rehabilitation of a Large Dam by Construction of Emergency Spillway (Im Ha Multipurpose Dam in Korea) Tae Myoung JEON Three Dimensional coupled Nonlinear finite Element Analysis of Shuangjiangkou Rochfill Dam (China) DENG Gang In depth Event Investigations based on a systemic MTO-perspective within Vattenfall Hydro Power Plants (Sweden) Carl Rollenhagen 2