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Home arrow Other Coastlines arrow Ohiwa Spit arrow Ohiwa Spit. What goes around ...
Ohiwa Spit. What goes around ... PDF Print
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Written by Ministry for the Environment / Doug Ramsay and Rob Bell of NIWA   
Tuesday, 14 December 2010

Photo shows a house falling into the sea at Ohiwa Spit in 1976 following a series of storms that caused severe erosion, while in the background, there is a line of vertical railway irons offshore that mark a previous futile attempt to stop erosion in the years up to 1976.
Photograph courtesy of RK Smith

The patterns of coastal change on Ohiwa Spit in the Bay of Plenty, and the effect this has on coastal development, exemplify the problems in land planning and coastal hazard management that are occurring around the New Zealand coast. Similar issues are being faced at Mokau on the western coast of the Waikato region and in most other regions around the country.

Ohiwa Spit has a long history of fluctuations in the position of the coastline. Between 1867 and 1911, the coastline of the Spit tended to build seawards, or accrete. This period was followed by an erosive phase over the next few decades to around 1949. In the decade that followed, the spit once again started to build seaward until around 1959, when an erosive phase once again began.

This phase culminated in a series of storms in the mid- to late 1970s, which resulted in a number of properties falling into the sea. However, this was not the first time that property had been lost owing to the natural cyclic changes that occurred on the Spit.

Source: Coastal Hazards and Climate Change: A Guidance Manual for Local Government in New Zealand (2008).

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Comments (1)
1. 14-12-2010 10:56
Your new home...
Your new home is right on the beach. :)

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