Wetland Revival Project
Project Name: Demonstration of Wetland Revival at Urban Communities in Mahakhali IPH Pond
Location: Dhaka IPH Pond, Mahakhali
Duration: Sep. 2025 – Oct. 2025
RTK-Based Elevation and Contour Mapping Survey
As part of this study, a high-precision topographic survey of the Mahakhali IPH Pond was conducted to generate accurate spatial and elevation datasets necessary for subsequent environmental and hydrological analyses. The survey employed Real-Time Kinematic (RTK) GPS and Total Station instruments, selected for their capacity to capture fine-scale variations in terrain. The survey design followed established geodetic protocols while incorporating localized insights regarding seasonal water levels, community use patterns, and drainage behavior to ensure relevance and spatial accuracy.
Elevation measurements were systematically collected across the pond basin, embankments, inlet–outlet points, and surrounding buffer areas using a dense sampling framework that minimized interpolation errors. The collected field data were processed and quality-checked before being used to develop a 0.5-meter resolution Digital Elevation Model (DEM) and corresponding 0.5-meter contour intervals within ArcGIS Pro. AutoCAD was utilized for geometric refinement and preparation of engineering-ready spatial outputs. These high-resolution products effectively captured micro-topographic features, allowing for precise characterization of pond morphology and surface gradients.
To support further analysis, a detailed longitudinal profile at 3-meter intervals was generated, providing insights into depth fluctuations, slope transitions, sediment deposition zones, and hydrological flow paths. Additionally, multiple cross-sectional profiles were derived to examine variations in pond width, embankment stability, and side slope conditions, highlighting areas susceptible to erosion or structural degradation.
The resulting topographic datasets—including the DEM, contour layers, longitudinal section, and cross-sections—formed a foundational input for hydrological assessment, ecological condition analysis, and restoration planning. These spatial outputs informed interpretations related to water retention capacity, drainage efficiency, sediment dynamics, and ecosystem recovery potential, thereby supporting evidence-based recommendations for the sustainable management and rehabilitation of the Mahakhali IPH Pond.
Soil Test
Using ArcGIS Pro, I analyzed the 0.5m-resolution Digital Elevation Model (DEM) and contour layers to support hydrological and ecological planning for Mahakhali IPH Pond. The elevation data enabled precise slope analysis, depth profiling, and surface flow interpretation. Contour intervals at 0.5m were used to delineate micro-topographic features critical for pond restoration and biodiversity modeling. These spatial insights informed the longitudinal section design and guided nature-based planning strategies for urban wetland resilience.
ArcGIS Pro for Planning
Using ArcGIS Pro, I analyzed the 0.5m-resolution Digital Elevation Model (DEM) and contour layers to support hydrological and ecological planning for Mahakhali IPH Pond. The elevation data enabled precise slope analysis, depth profiling, and surface flow interpretation. Contour intervals at 0.5m were used to delineate micro-topographic features critical for pond restoration and biodiversity modeling. These spatial insights informed the longitudinal section design and guided nature-based planning strategies for urban wetland resilience.