The 2003 flood of the Muda River reached 1,340 m3 /s at Ladang Victoria and adversely impacted 45,000 people in Malaysia. A flood control remediation plan proposed a levee height based on a 50-year discharge of 1 ,815 m3 /s obtained from hydrologic models. This design discharge falls outside the 95% confidence intervals of the flood frequency analysis based on field measurements. Instream sand ...

Urban rivers are vulnerable to different processes and activities that pollute and degrade the water ecosystem. Restoring their health poses a huge challenge to governments and other actors. This paper examines a ‘success’ case of a LGU-initiated river rehabilitation program in the Philippines in two sequential phases; the first phase which targeted physical restoration of the riverbanks and so...

This study is undertaken to compare some different flood routing models including wave models and numerical models in the real field. The results of the wave models included kinematic, diffusive and dynamic wave have already been compared using laboratory data. Lack of the data field and technical support has been causes of not be investigated in the real field. In this present paper, several n...

The Elizabeth River system is an estuary in southeastern Virginia, surrounded by the towns of Chesapeake, Norfolk, Portsmouth, and Virginia Beach. The river has played important roles in U.S. history and has been the location of various military and industrial activities. These activities have been the source of chemical contamination in this aquatic system. Important industries, until the 1990...

Assessing and quantifying ecosystem vulnerability is a key issue in site-specific ecotoxicological risk assessment. In this paper, the concept of vulnerability, particularly referred to aquatic ecosystems is defined. Sensitivity to stressors, susceptibility for exposure and recovery capability are described as component of vulnerability of biological communities. The potential for habitat chang...