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Whitianga / Mercury Bay Harbour and Catcment Management Plan

About the Whitianga/Mercury Bay harbour and catchment area

The harbour and catchment plan for Whitianga/Mercury Bay will cover from Waitaia Bay to Sailors Grave, including land area, and Whitianga Harbour and Purangi Estuary.

>> CLICK HERE TO VIEW / DOWNLOAD A MAP OF THE AREA [PDF, 626 KB]

The land area is about 54,000 hectares and includes 198 kilometres of streams and rivers. It’s made up of 11 sub-catchments:

  • Wharekaho
  • Tuputapuatea/Tarapatiki
  • Mahakirau/Kaimarama
  • Mill Creek
  • Waiwawa
  • Kapowai
  • Cook
  • Purangi
  • Wigmore
  • Whenuakite
  • Hot Water Beach.

Of the land area:

  • 65 per cent is in indigenous vegetation
  • 24 per cent is in pasture
  • 8 per cent is in exotic vegetation (6 per cent in plantation forest)
  • 51 per is moderately steep to very steep (between 21 to >35 degrees)
  • 33 per cent is in sheep and dairy farming.

Whitianga Harbour is about 1690 hectares, has about 74 kilometres of harbour margins and 141 kilometres of coastline.