High-resolution maps now publicly available

A new high-resolution ground mapping dataset has been completed, now covering 4250sq km of Otago coastline up to 40km inland.

The high-resolution 3D ground elevation data for the coastline was captured with light detection and ranging (LiDAR) technology — a method for determining ranges by targeting a surface with a laser and measuring the time for the reflected light to return to the receiver during an aircraft flyover.

“The geospatial dataset will be an invaluable tool in identifying, mapping and managing natural hazards, be it flooding, erosion or landslips,” Otago Regional Council spatial analyst Andrew Welsh said.

‘‘Many groups can benefit from the data set, including research institutions, ecologists for wetland mapping or for engineers to inform flood protection planning.’’

The 3D mapping data is available online and has just been publicly released as part of the Provincial Growth Fund-LiDAR elevation data capture project, and almost 4000sq km of further data from around Central Otago is expected to be released later this year.