Bathymetric & Topographic Survey of Rara Lake
Precision bathymetric and topographic surveying of Rara Lake for hydrological and environmental applications.
Assignment overview
Rara is Nepal's largest lake, sits above 2,900 metres in Mugu, and had never been surveyed to a standard that would support hydrological analysis or lake-basin management. Its remoteness is precisely why: mobilising survey equipment and crews to the site is a logistics exercise before it is a technical one.
e2services delivered bathymetric and topographic survey of the lake for the Department of Hydrology and Meteorology, establishing bed geometry and stored volume alongside shoreline topography, tied to a control network the team established on site.
Control is what makes the numbers usable. A bathymetric surface referenced to an assumed datum tells you the shape of the bed; one referenced to established benchmarks tells you the water level at which that shape holds, which is what any subsequent monitoring or water-balance work depends on.
The same capability transfers directly to glacial lake hazard work, where field verification of stored volume and outlet geometry is the step that separates a verified hazard assessment from a remote-sensing estimate — and where the access conditions are, if anything, harder.
Need a survey, a design package, or a multi-disciplinary study team?
Tell us about the corridor, basin, or facility. We will respond with the right mix of engineering and field capability.