Unlike nations with continuous surveying histories, Cambodia’s cartographic record is fragmented. The legacy of colonial administration, the devastation of the Khmer Rouge era (which destroyed much of the country's geodetic infrastructure), and the subsequent reconstruction efforts have resulted in a patchwork of mapping resources. Understanding the current state of Cambodian topography requires an analysis of both historical paper series and modern remote sensing technologies.
For modern travelers, OpenStreetMap (OSM) is the best resource. OSM has a "Cycle Map" and "Hiking Map" layer that functions as a crowd-sourced topographic map of Cambodia. It is excellent for the Angkor Archaeological Park and the trails around Kulen Mountain. It is less reliable in the deep jungles of Mondulkiri. topographic map of cambodia
Because Cambodia has sensitive border disputes (specifically with Vietnam and Thailand), high-resolution topographic maps are often classified or restricted for export. However, here is how to get them legally: For modern travelers, OpenStreetMap (OSM) is the best
: Roughly 86% of Cambodia's landmass is part of the Mekong-Tonle Sap drainage system. It is less reliable in the deep jungles of Mondulkiri
: Approximately 318 ft (97 m) above sea level.