{"source":"Christchurch City Council open data: DistrictPlanB service, DPSlopeHazard (layer 69)","generated":"2026-10-13T03:03:18.772Z","note":"Sampled join, a grid of points inside each suburb outline asks whether the slope-hazard areas hold it. `share` covers the named bands (rockfall, cliff collapse, mass movement); `rsi` is the share under the broad remaining-instability overlay, kept separate because it blankets most of the Peninsula. A management overlay, not a prediction.","suburbs":{"akaroa":{"n":0,"share":0,"ha":0,"rsi":0.724,"cats":[]},"cashmere":{"n":14,"share":0.138,"ha":182.5,"rsi":0.786,"cats":["Rockfall Management Area 1","Rockfall Management Area 2","Mass Movement Management Area 3"]},"cass-bay":{"n":8,"share":0.209,"ha":56.4,"rsi":0.786,"cats":["Rockfall Management Area 1","Rockfall Management Area 2"]},"clifton":{"n":8,"share":0.135,"ha":11.5,"rsi":0.825,"cats":["Rockfall Management Area 1","Cliff Collapse Management Area 2","Mass Movement Management Area 2"]},"corsair-bay":{"n":7,"share":0.218,"ha":5.5,"rsi":0.764,"cats":["Rockfall Management Area 1","Rockfall Management Area 2"]},"cracroft":{"n":5,"share":0.036,"ha":9.7,"rsi":0.605,"cats":["Rockfall Management Area 1","Rockfall Management Area 2"]},"diamond-harbour":{"n":0,"share":0,"ha":0,"rsi":0.973,"cats":[]},"duvauchelle":{"n":0,"share":0,"ha":0,"rsi":0.878,"cats":[]},"ferrymead":{"n":3,"share":0.031,"ha":7.6,"rsi":0.025,"cats":["Rockfall Management Area 1","Rockfall Management Area 2","Mass Movement Management Area 2"]},"governors-bay":{"n":5,"share":0.059,"ha":194.2,"rsi":0.702,"cats":["Rockfall Management Area 1"]},"halswell":{"n":0,"share":0,"ha":0,"rsi":0.013,"cats":[]},"heathcote-valley":{"n":12,"share":0.367,"ha":304.1,"rsi":0.502,"cats":["Rockfall Management Area 1","Rockfall Management Area 2","Mass Movement Management Area 2"]},"hillsborough":{"n":8,"share":0.097,"ha":64.7,"rsi":0.628,"cats":["Rockfall Management Area 1","Rockfall Management Area 2","Mass Movement Management Area 2"]},"huntsbury":{"n":6,"share":0.033,"ha":5.3,"rsi":0.886,"cats":["Mass Movement Management Area 2","Rockfall Management Area 1","Mass Movement Management Area 3"]},"kennedys-bush":{"n":2,"share":0.04,"ha":59.2,"rsi":0.698,"cats":["Rockfall Management Area 1"]},"le-bons-bay":{"n":0,"share":0,"ha":0,"rsi":0.821,"cats":[]},"little-river":{"n":0,"share":0,"ha":0,"rsi":0.811,"cats":[]},"lyttelton":{"n":15,"share":0.264,"ha":165.6,"rsi":0.569,"cats":["Rockfall Management Area 1","Rockfall Management Area 2","Cliff Collapse Management Area 2"]},"moncks-bay":{"n":5,"share":0.071,"ha":2.7,"rsi":0.465,"cats":["Rockfall Management Area 2","Rockfall Management Area 1","Cliff Collapse Management Area 2"]},"mount-pleasant":{"n":2,"share":0.013,"ha":4.7,"rsi":0.924,"cats":["Rockfall Management Area 1","Mass Movement Management Area 2"]},"okains-bay":{"n":0,"share":0,"ha":0,"rsi":0.779,"cats":[]},"pigeon-bay":{"n":0,"share":0,"ha":0,"rsi":0.821,"cats":[]},"port-levy":{"n":0,"share":0,"ha":0,"rsi":0.807,"cats":[]},"redcliffs":{"n":13,"share":0.136,"ha":25.9,"rsi":0.551,"cats":["Rockfall Management Area 1","Cliff Collapse Management Area 2","Rockfall Management Area 2"]},"richmond-hill":{"n":2,"share":0.03,"ha":1.8,"rsi":0.95,"cats":["Mass Movement Management Area 2","Rockfall Management Area 2"]},"saint-martins":{"n":3,"share":0.037,"ha":4.3,"rsi":0.043,"cats":["Mass Movement Management Area 2","Rockfall Management Area 1","Rockfall Management Area 2"]},"scarborough":{"n":3,"share":0.087,"ha":6,"rsi":0.85,"cats":["Cliff Collapse Management Area 2","Mass Movement Management Area 1"]},"sumner":{"n":8,"share":0.095,"ha":113.5,"rsi":0.804,"cats":["Rockfall Management Area 1","Rockfall Management Area 2"]},"te-onepoto-taylors-mistake":{"n":5,"share":0.097,"ha":1.6,"rsi":0.458,"cats":["Rockfall Management Area 2","Cliff Collapse Management Area 2","Rockfall Management Area 1"]},"wainui":{"n":0,"share":0,"ha":0,"rsi":0.681,"cats":[]},"westmorland":{"n":4,"share":0.034,"ha":8.5,"rsi":0.449,"cats":["Rockfall Management Area 2","Rockfall Management Area 1"]}}}