Physical Geography- Unintentional Management Case Study: New Zealand Sand Mining 0.0 / 5 ? GeographyCoastal LandscapesASOCR Created by: 13clarkenCreated on: 13-05-19 17:10 What coastline did the sand mining happen on? Mangawhai- Pakiri coastline 1 of 9 How far does the coastline stretch for? 20km 2 of 9 How much sand was extracted between 1994 and 2004? 165,000m cubed 3 of 9 What year did Sand mining end in Mangawhai? 2005 4 of 9 What are current extraction rates at Pakiri until 2020 in m cubed? 75,000 5 of 9 By how much do extraction rates exceed input rates? Factor of 5 6 of 9 In 1978, how big was the breach that caused sedimentation into the harbour at Mangawhai spit, causing flood threats to the waterfront community? 28m 7 of 9 By how much is the coastline expected to retreat by, by the end of the century? 35m 8 of 9 How many other beaches are there in Auckland? 123 9 of 9
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