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NTDB & NTMS Specifications (250K & 100K)
Updated: 1 December 2007

2.3.3 Pondage Areas

2.3.3.4 Example 4
Location of Example: 152°37'08" East, 25°12'40" South
Distinctive Characteristics:
  • Settling Ponds appear on imagery as large geometric shaped ponds separated by levees.
  • Sewage Settling Ponds may be distinguished from other types of ponds by the presence of the treatment tanks and plant infrastructure.
  • Settling Ponds are isolated from the natural hydrological network.
Regional Considerations:
Figure: 2.3.3.4 Representation of Settling Ponds.

Figure: 2.3.3.4a Orthophotography 60cm RGB=123 Figure: 2.3.3.4b SPOT 2.5m RGB=123

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