Study Area:

The project focused on Eastern Nepal, specifically within the Koshi and Kankai river basins. This region is vital for hydrological studies due to its significant river systems and varying topography. Establishing accurate Mean Sea Level (MSL) benchmarks in this area is crucial for effective hydrological monitoring, flood risk management, and water resource planning. Eastern Nepal’s diverse terrain, which includes mountainous regions and river valleys, posed specific challenges for the survey, requiring precise and reliable benchmarks to align with national geodetic standards.

The Koshi and Kankai river basins are known for their dynamic hydrological conditions, including seasonal variations in river flow and potential flood risks. Accurate MSL benchmarks help in calibrating hydrological models and improving the accuracy of flood forecasting systems, which are essential for disaster management and infrastructure planning in this region.

 Deliverables:

– Contour Maps: These maps provided detailed elevation information across the surveyed areas, facilitating the analysis of topographical features and aiding in the accurate placement of hydrological stations.

– Point Data in CSV Format: The point data included precise geographic coordinates of the MSL benchmarks, which are critical for integrating with existing geodetic data and ensuring consistency across hydrological stations.

– Topographical Maps: Comprehensive topographical maps combined the contour data and other spatial information, providing a detailed view of the terrain and assisting in the planning and management of hydrological monitoring stations.