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FSL Flood Return Interval
Manaaki Whenua – Landcare ResearchThe New Zealand Fundamental Soil Layer originates from a relational join of features from two databases: the New Zealand Land Resource Inventory (NZLRI), and the National Soils Database (NSD). The NZLRI is a national polygon database of physical land resource information, including a soil unit. Soil is one in an inventory of five physical factors...Created 3 May 2018 • Updated 3 March 2025 -
Flood Zones
Wellington City CouncilFlood zones are identified from a combination of historic flooding records and flood modelling compiled by Wellington Water. Data has been compiled from a variety of sources and its accuracy may vary. Information supplied is to the best of Wellington Water's knowledge, and must not be used for detailed engineering design. Please contact Wellington Water...Created 21 June 2020 • Updated 10 July 2020 -
NZ Flood Statistics Henderson Collins V2 Layer
National Institute of Water and Atmospheric Research LimitedLayer used in public web app https://niwa.maps.arcgis.com/apps/webappviewer/index.html?id=933e8f24fe9140f99dfb57173087f27d to provide Flood Estimation for New Zealand 1. Modelled flood frequency estimates on river lines.NZREACH NZ digital network 1 ID no.River name where availableAreakm2 catchment area draining to the downstream end of this reach (square...Created 3 June 2020 • Updated 3 June 2020 -
New Zealand River Flood Statistics App
National Institute of Water and Atmospheric Research LimitedA map service and web application where users can extract flood statistics from a regional flood model, at-site flood statistics and annual maximum flows from flow recorders used in the model development, flood estimates based on rain intensity for use in the Rational Method. 1. Modelled flood frequency estimates on river lines.NZREACH NZ digital network...Created 3 June 2020 • Updated 3 June 2020 -
HIRDS v4 Rainfall Depth Surfaces New Zealand
National Institute of Water and Atmospheric Research LimitedThe High Intensity Rainfall Design System (HIRDS) provides estimates of high intensity rainfall at ungauged locations for a range of return periods and event durations. These surfaces can be used for design storm assessment and in the design of flood protection works and other waterway structures. They can also be used for flood modelling, including flood...Created 3 June 2020 • Updated 3 June 2020 -
Flood Statistics 2018 REC1
National Institute of Water and Atmospheric Research LimitedLayer used in public web app https://niwa.maps.arcgis.com/apps/webappviewer/index.html?id=933e8f24fe9140f99dfb57173087f27d to provide Flood Estimation for New Zealand 1. Modelled flood frequency estimates on river lines.NZREACH NZ digital network 1 ID no.River name where availableAreakm2 catchment area draining to the downstream end of this reach (square...Created 3 June 2020 • Updated 3 June 2020 -
Rational Method HIRDS V3 REC1
National Institute of Water and Atmospheric Research LimitedLayer used in public web app https://niwa.maps.arcgis.com/apps/webappviewer/index.html?id=933e8f24fe9140f99dfb57173087f27d to provide Flood Estimation for New Zealand 1. Modelled flood frequency estimates on river lines.NZREACH NZ digital network 1 ID no.River name where availableAreakm2 catchment area draining to the downstream end of this reach (square...Created 3 June 2020 • Updated 3 June 2020 -
Flood Statistics Flow Gauges 2018
National Institute of Water and Atmospheric Research LimitedLayer used in public web app https://niwa.maps.arcgis.com/apps/webappviewer/index.html?id=933e8f24fe9140f99dfb57173087f27d to provide Flood Estimation for New Zealand 1. Modelled flood frequency estimates on river lines.NZREACH NZ digital network 1 ID no.River name where availableAreakm2 catchment area draining to the downstream end of this reach (square...Created 3 June 2020 • Updated 3 June 2020
