DEM-H: Australian SRTM Hydrologically Enforced Digital Elevation Model

Stay organized with collections Save and categorize content based on your preferences.
AU/GA/DEM_1SEC/v10/DEM-H
Dataset Availability
2010-02-01T00:00:00Z–2010-02-01T00:00:00
Dataset Provider
Earth Engine Snippet
ee.Image("AU/GA/DEM_1SEC/v10/DEM-H")
Tags
australia dem elevation ga geophysical geoscience-australia smoothed srtm

Description

The Hydrologically Enforced Digital Elevation Model (DEM-H) was derived from the SRTM data acquired by NASA in February 2000. The model has been hydrologically conditioned and drainage enforced. The DEM-H captures flow paths based on SRTM elevations and mapped stream lines, and supports delineation of catchments and related hydrological attributes. The dataset was derived from the 1 second smoothed Digital Elevation Model (DEM-S; ANZCW0703014016) by enforcing hydrological connectivity with the ANUDEM software, using selected AusHydro V1.6 (February 2010) 1:250,000 scale watercourse lines (ANZCW0503900101) and lines derived from DEM-S to define the watercourses. The drainage enforcement has produced a consistent representation of hydrological connectivity with some elevation artifacts resulting from the drainage enforcement. A full description of the methods is in preparation (Dowling et al., in prep).

This product provides a DEM suitable for use in hydrological analysis such as catchment definition and flow routing.

There are several areas with unexpected negative values: close to Canberra around (150.443044, -35.355281) with values of -55 and in Western Australia around (124.84, -16.44) with -43.

Bands

Resolution
30.92 meters

Bands

Name Units Min Max Description
elevation m -31.37* 2223.24*

Elevation

* estimated min or max value

Terms of Use

Terms of Use

CC-BY-4.0

Citations

Citations:
  • Geoscience Australia, 2015. Digital Elevation Model (DEM) of Australia derived from LiDAR 5 Metre Grid. Geoscience Australia, Canberra.