Topographic Map Of Cambodia <Full HD>

The Lay of the Land: A Deep Dive into Cambodia's Topographic Map

’s topography is often described as a vast, low-lying "bowl"

. This unique structure, featuring a massive central plain ringed by protective mountain ranges, has shaped the country’s history, agriculture, and lifestyle for centuries. 1. The Central Lowlands: Cambodia’s Fertile Heart At the center of the topographic map lies the Cambodian Plain

, a massive alluvial basin that covers roughly 75% of the country. Most of this region sits at an elevation of less than 100 metres above sea level. The Mekong River

: Flowing from the north to the southeast, the Mekong is the lifeblood of the plains, depositing nutrient-rich sediment during its annual floods. Tonlé Sap (The Great Lake) topographic map of cambodia

: This is Southeast Asia’s largest freshwater lake. It is famous for a rare hydrological phenomenon: during the monsoon season, the Tonlé Sap River reverses its flow, pushing water from the Mekong back into the lake and expanding it from 2,500 k m squared to over 12,000 k m squared 2. The Mountainous Rim: Protecting the Basin

The "walls" of the Cambodian bowl consist of several distinct highland regions that provide a stark contrast to the flat central plains.

A topographic map of Cambodia reveals a country shaped like a shallow bowl, dominated by a massive central plain and ringed by rugged highlands and mountains. Understanding these elevation shifts is key to grasping Cambodia's unique hydrology, particularly the seasonal "heartbeat" of the Tonle Sap. The Central Lowlands: The Heart of the Basin

The defining feature of Cambodia's topography is the Central Plain, which covers approximately 75% of the country. The Lay of the Land: A Deep Dive

Elevation: Most of this region sits between 10 and 30 meters above sea level.

The Tonle Sap (Great Lake): Located in the center-west, it is Southeast Asia's largest freshwater lake. Its elevation is so low that during the monsoon season, the Mekong River's rising waters actually reverse the flow of the Tonle Sap River, pushing water back into the lake and expanding its surface area from roughly 2,500 km² to 16,000 km².

Mekong River Delta: In the southeast, the plains merge into the fertile Mekong Delta, where the river splits into the Mekong and Bassac rivers at Phnom Penh. The Mountainous Rim: Natural Barriers

The "walls" of Cambodia's topographic bowl are formed by three major mountain systems: low relief (&lt

Title: Terrain, Territory, and Technology: A Comprehensive Overview of Topographic Mapping in Cambodia

Abstract

Topographic maps serve as fundamental tools for national development, environmental management, and territorial sovereignty. In Cambodia, the evolution of topographic mapping reflects the nation’s turbulent history and its rapid modernization. This paper provides a detailed analysis of the topographic map landscape of Cambodia, tracing the transition from colonial-era triangulation and the definitive work of the Service Géographique National Khmer (SGNK) to modern digital elevation models (DEMs) and satellite-derived datasets. It examines the technical specifications of Cambodian map series, the challenges posed by datum shifts, and the critical role of topographic data in managing the Tonle Sap basin and the Mekong River system.

3.1 The 1:50,000 Scale Series

The 1:50,000 scale is generally considered the standard medium-scale topographic map for tactical planning and local administration in Cambodia.

  • Coverage: The country is covered by approximately 500 sheets.
  • Origin: Many current sheets are digitized versions of the 1960s SGNK series or derived from 1990s aerial surveys.
  • Features: These maps depict relief through contour lines (typically 10 or 20-meter intervals), drainage patterns, vegetation cover, and transportation networks.

Report: The Topographic Map of Cambodia – A Landscape of Basin, Rim, and Lifeline

Date: October 26, 2023 Subject: Analysis of Cambodia’s Physical Topography

1. Major topographic regions (concise overview)

  • Mekong River Basin and Central Plains: Broad lowland plain (0–50 m) running south through Phnom Penh toward the Mekong Delta; extensive floodplains and seasonal wetlands (Tonle Sap system). Example: seasonal inundation around Tonle Sap Lake visible as low-elevation contour belts and flood extent overlays.
  • Cardamom and Elephant Mountains (Southwest): Rugged, steep terrain with peaks up to ~1,800 m; dense forest cover and deep valleys—shown by tightly packed contours and hillshade. Example: Phnom Aural massif (highest point ~1,813 m) appears as a sharp elevation peak with radial drainage patterns.
  • Dângrêk Mountains (North): Low to moderate ridge (~500–700 m) forming the border with Thailand—linear ridge lines and escarpments on maps.
  • Kampong Thom–Prey Veng uplands and Tonle Sap fringe: Gentle undulating terrain (50–200 m) with alluvial terraces and oxbow features; subtle contours and slope shading important for agriculture planning.
  • Coastal plain (South): Narrow coastal lowlands and estuaries with sandy substrates; low relief (<50 m) and tidal flats indicated by bathymetric/topo transition and contour intervals approaching sea level.