2.3.5 Dams Example 1

Location of Example: 144°5'7" East, 35°1'15" South
Distinctive Characteristics:
  • Dams can be differentiated from vegetation on thematic imagery by their blue signature compared with the red signature of the vegetation.
  • Dams can also be identified by the surrounding earth which was disturbed or displaced during the construction of the Dam. This can aid in distinguishing dry dams from depressions.
  • Spectral response may also indicate the presence of water even in a dry dam. In Figure the SPOT imagery indicates a presence of the water with the light/royal blue signature.
Regional Considerations:
Figure: Representation of Dams

Figure: SPOT 2.5m RGB=123

Topic contact: mapfeedback@ga.gov.au Last updated: January 20, 2012