NATURE OF PROJECT: TERRAIN MAPPING
CLIENT: BAHAGIAN PERKHIDMATAN TEKNIKAL, JABATAN MINERAL & GEOSAINS MALAYSIA
DURATION: MAY – NOVEMBER 2018
BACKGROUND AND METHODOLOGY
Cameron Highlands is an area exposed to multiple geohazard events, attributed to developments in geotechnically challenging area. Poor land use planning with poorly engineered development especially in agricultural sector led to landslide, debris flow and flash flood occurrences which has claimed multiple lives.
Previous terrain mapping study was done in 2002 by Jabatan Mineral dan Geosains Malaysia (JMG) in the same area. However, rapid developments which often conflicted with recommendations from previous study results in need of a new phase of terrain mapping study. Interferometric Synthetic Aperture Radar (IFSAR) Digital Elevation Model (DEM) were used as the base map for this study.
The study was divided into 5 phases. The first phase (desktop study) included the literature review, terrain analysis, polygon demarcation and satellite image analysis. Second phase (field works) commenced in late July, focusing on site verification of polygons and its attributes with training on site (Figure 1).

Third phase (data processing) were intense GIS analysis of polygon attribute, focusing on refining polygons based on site observations and producing thematic maps. Fourth phase were site verification of mapping products with JMG officers, and final (fifth phase) was the submission of corrected final report.
RESULTS
Terrain Classification Map (TCM) was generated based on the attributes of terrain mapping. Thematic maps including Erosion Map, Landform Map, Physical Constraints Map, Construction Suitability Map (CSM) and Engineering Geological Map were generated based on polygon attributes and site observations. Table 1 shows the terrain classification on CSM from this study.

GEOHAZARDS IN CAMERON HIGHLANDS
A geohazards map was generated based on IFSAR hillshade map, demarcated with advice from the late Dr Tajul Anuar Jamaluddin. Geohazards feature includes landslide, debris flow potential and interpreted landslide system. Sample of geohazards data is shown in Figure 2.
