Canterbury - Christchurch and Ashley River 1m DEM (2018)

This layer contains the DEM for LiDAR data in the Canterbury Region surronding Christchurch and the Ashley River between 2018 and 2019.

• The DSM is available as layer Canterbury - Christchurch and Ashley River 1m DSM (2018).

• The index tiles are available as layer Canterbury - Christchurch and Ashley River LiDAR Index Tiles (2018).

• The LAS point cloud and vendor project reports are available from OpenTopography.

LiDAR was captured for Environment Canterbury Regional Council by Aerial Surveys from 20 July 2018 to 01 March 2019. These datasets were generated by Aerial Surveys and their subcontractors. Data management and distribution is by Land Information New Zealand.

Data comprises:

• DEM: tif or asc tiles in NZTM2000 projection, tiled into a 1:1,000 tile layout

• DSM: tif or asc tiles in NZTM2000 projection, tiled into a 1:1,000 tile layout

• Point cloud: las tiles in NZTM2000 projection, tiled into a 1:1,000 tile layout

Pulse density specification is at a minimum of 2.14 pulses/square metre.

Vertical Accuracy Specification is +/- 0.2m (95%).

Horizontal Accuracy Specification is +/- 1.0m (95%).

Vertical datum is NZVD2016.