NSW Office of Environment and Heritage (OEH) Single-beam Bathymetry and Coastal Topography Surveys

Data products from elevation/bathymetry surveys carried out by the New South Wales Office of Environment and Heritage (OEH). Surveys were conducted in and around NSW Coastal and State Waters, using 1) single-beam echosounder, 2) terrestrial laser scanner and/or 3) pole-mounted Leica positioning unit (beach cross section) for the state?s coastal surveying program. The program is ongoing and provides highly accurate and precise, fine-scale elevation data for NSW nearshore, estuaries and beaches. Single-beam and beach cross-section surveys are most often provided as 5m binned along track transect data whereas laser scanner data are usually better than 5m binned grids for use in GIS applications. Data are often combined and issued as PDF survey maps relative to Local or Australian Height Datum. Generally, survey and data processing details are included as txt format files or more recently (>2011) in a "scientific rigour" statement. A shape file is also provided showing the geographic coverage of the survey (ESRI shapefile and Google KMZ formats).