Page Summary
-
The Hydrologically Enforced Digital Elevation Model (DEM-H) is derived from SRTM data and designed for hydrological analysis.
-
This dataset captures flow paths based on SRTM elevations and mapped streamlines to support delineation of catchments and related hydrological attributes.
-
The DEM-H dataset has a pixel size of 30.92 meters and provides elevation data in meters.
-
Terms of use for this dataset are CC-BY-4.0.
- Dataset Availability
- 2010-02-01T00:00:00Z–2010-02-01T00:00:00Z
- Dataset Provider
- Geoscience Australia
- Tags
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
Pixel Size 30.92 meters
Bands
| Name | Units | Min | Max | Pixel Size | Description |
|---|---|---|---|---|---|
elevation
|
m | -31.37* | 2223.24* | meters | Elevation |
Terms of Use
Terms of Use
Citations
-
Geoscience Australia, 2015. Digital Elevation Model (DEM) of Australia derived from LiDAR 5 Metre Grid. Geoscience Australia, Canberra.
Explore with Earth Engine
Code Editor (JavaScript)
var dataset = ee . Image ( 'AU/GA/DEM_1SEC/v10/DEM-H' ); var elevation = dataset . select ( 'elevation' ); var elevationVis = { min : - 10.0 , max : 1300.0 , palette : [ '3ae237' , 'b5e22e' , 'd6e21f' , 'fff705' , 'ffd611' , 'ffb613' , 'ff8b13' , 'ff6e08' , 'ff500d' , 'ff0000' , 'de0101' , 'c21301' , '0602ff' , '235cb1' , '307ef3' , '269db1' , '30c8e2' , '32d3ef' , '3be285' , '3ff38f' , '86e26f' ], }; Map . setCenter ( 133.95 , - 24.69 , 5 ); Map . addLayer ( elevation , elevationVis , 'Elevation' );
