{"source":"Christchurch City Council open data: BoulderFieldCapture, the GNS rockfall survey of the Port Hills","generated":"2026-10-11T18:32:20.853Z","note":"Each survey pin files under the suburb it sits in: the count of pins, the rocks counted (a pin may stand for a cluster), and how many rocks fell or wobble easy. A pin marks where the survey saw the rock, not where it is now.","suburbs":{"cashmere":{"pins":281,"rocks":510,"fallen":212,"easy":57},"cass-bay":{"pins":234,"rocks":762,"fallen":419,"easy":71},"clifton":{"pins":81,"rocks":136,"fallen":77,"easy":4},"corsair-bay":{"pins":19,"rocks":82,"fallen":6,"easy":7},"diamond-harbour":{"pins":42,"rocks":123,"fallen":24,"easy":16},"ferrymead":{"pins":174,"rocks":400,"fallen":326,"easy":47},"governors-bay":{"pins":216,"rocks":772,"fallen":136,"easy":139},"heathcote-valley":{"pins":1899,"rocks":5632,"fallen":3375,"easy":279},"hillsborough":{"pins":651,"rocks":923,"fallen":612,"easy":73},"huntsbury":{"pins":53,"rocks":145,"fallen":61,"easy":14},"kennedys-bush":{"pins":3,"rocks":11,"fallen":2,"easy":5},"little-river":{"pins":3,"rocks":3,"fallen":1,"easy":0},"lyttelton":{"pins":419,"rocks":1023,"fallen":612,"easy":48},"moncks-bay":{"pins":23,"rocks":30,"fallen":13,"easy":13},"mount-pleasant":{"pins":176,"rocks":1000,"fallen":823,"easy":34},"redcliffs":{"pins":44,"rocks":242,"fallen":234,"easy":0},"richmond-hill":{"pins":8,"rocks":408,"fallen":400,"easy":8},"saint-martins":{"pins":20,"rocks":58,"fallen":53,"easy":0},"scarborough":{"pins":93,"rocks":457,"fallen":381,"easy":31},"sumner":{"pins":1908,"rocks":6354,"fallen":3792,"easy":1176},"tai-tapu":{"pins":2,"rocks":6,"fallen":0,"easy":0},"te-onepoto-taylors-mistake":{"pins":4,"rocks":4,"fallen":3,"easy":0}}}