Construction works for a new State Islamic school south of Sg. Papar, Sabah contravened State Land Ordinance Foreshore reserve limits and the Department of Irrigation and Drainage guidelines with permanent structures only being setback 10m from the high water line. DHI has completed a long-term montoring, modelling and evaluation study to ascertain if erosion observed during 1998 would re-emerge, given the deposition of 0.5 million m ³ of sand at the site by river discharge in connection with typhoon Hilda in January 1999. DHI has also established the preferred form of coastal protection, including hydraulic design parameters and the environmental impacts upon the adjacent properties.