What is the right survey for a reservoir safety inspection?

Reservoir safety inspections under the Reservoirs Act 1975 may require a combination of bathymetric survey of the reservoir capacity, topographic survey of the dam crest, embankment faces and spillway, and settlement monitoring if an instrumented monitoring regime is in place. For larger reservoirs, UAV survey combined with bathymetric survey provides the most complete dataset. We advise on the scope required for your specific reservoir type and inspection category.