Bangladesh - High-resolution terrain modelling for hazard assessment of developed and planned areas in greater Dhaka City

Country / Region: Bangladesh / South Asia
Focal point: Environmental geology

Begin of project: January 21, 2006

End of project: February 19, 2010

Status of project: February 19, 2010

Satellite Image Bangladesh Source: BGR

A large part of general people and national wealth is being invested in infrastructural development in urban areas by the general people and the government. The uncontrolled rapidly expanding urban areas of Bangladesh are highly vulnerable to natural hazards. Any natural and anthropogenic hazard can demolish a substantial part of the urban infrastructures, as well as national economy.

The technical goal of the project is the implementation of a high-resolution terrain model for disaster prevention in developed areas and regional planning in urban and flood prone areas of Greater Dhaka City Bangladesh using advanced remote sensing technique. This technique allows the derivation of high resolution Digital Elevation Models (DEM) with an accuracy of app. 0.1 meter.

The available existing elevation information is insufficient for tracing the exact location of frequently flooded areas and artificial filled erosion channels in developed areas prone to subsidence and thus a threat for overlaying buildings and infrastructure.

Partner:

Geological Survey Bangladesh (GSB)