2 datasets found
  1. p

    HIRDS v4 Rainfall Depth Surfaces New Zealand

    • pacificgeoportal.com
    • hub.arcgis.com
    • +1more
    Updated Aug 2, 2018
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    National Institute of Water and Atmospheric Research (2018). HIRDS v4 Rainfall Depth Surfaces New Zealand [Dataset]. https://www.pacificgeoportal.com/datasets/edcbe0a99d7f4df59501ba55973648f5
    Explore at:
    Dataset updated
    Aug 2, 2018
    Dataset authored and provided by
    National Institute of Water and Atmospheric Research
    License

    Attribution-NonCommercial 4.0 (CC BY-NC 4.0)https://creativecommons.org/licenses/by-nc/4.0/
    License information was derived automatically

    Area covered
    Description

    The 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 routing, retention basin design and inundation mapping activities, helping to minimise flood risk within communities across the country. HIRDS uses a regionalised index-frequency method to utilise all available historical rainfall records gathered from multiple agencies. Each surface contains rainfall depth (in mm) for a given average recurrence interval (in years) and event duration (in hours) on a 2 km grid. Version 4 of this data set was prepared in consultation with Regional Councils and was funded through an Envirolink Tools Grant. See here for more information and its webpage HIRDS . In preparing HIRDSv4, all reasonable skill and care was exercised and the best available data and methods were used. Nevertheless, NIWA does not accept any liability, whether direct, indirect or consequential, arising out of the use of this tool.******************************************Work with this layer in the ArcGIS OpenData Portal****************************************** If you scroll to the bottom of the hub page for HIRDS v4, there’s a button in the lower right to “Open in ArcGIS Online” – click it A new browser tab opens with the so-called “Item details page” for the layer._Item Page Created: 2018-08-02 02:37 Item Page Last Modified: 2025-04-05 16:09Owner: NIWA_OpenData

  2. Rational Method HIRDS V3 REC1

    • data-niwa.opendata.arcgis.com
    • pacificgeoportal.com
    • +2more
    Updated Mar 15, 2019
    + more versions
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    National Institute of Water and Atmospheric Research (2019). Rational Method HIRDS V3 REC1 [Dataset]. https://data-niwa.opendata.arcgis.com/datasets/rational-method-hirds-v3-rec1
    Explore at:
    Dataset updated
    Mar 15, 2019
    Dataset authored and provided by
    National Institute of Water and Atmospheric Researchhttp://www.niwa.co.nz/
    License

    Attribution-NonCommercial 4.0 (CC BY-NC 4.0)https://creativecommons.org/licenses/by-nc/4.0/
    License information was derived automatically

    Area covered
    Description

    Rational_Method_HIRDS_V3_REC1

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Share
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TwitterTwitter
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Click to copy link
Link copied
Close
Cite
National Institute of Water and Atmospheric Research (2018). HIRDS v4 Rainfall Depth Surfaces New Zealand [Dataset]. https://www.pacificgeoportal.com/datasets/edcbe0a99d7f4df59501ba55973648f5

HIRDS v4 Rainfall Depth Surfaces New Zealand

Explore at:
Dataset updated
Aug 2, 2018
Dataset authored and provided by
National Institute of Water and Atmospheric Research
License

Attribution-NonCommercial 4.0 (CC BY-NC 4.0)https://creativecommons.org/licenses/by-nc/4.0/
License information was derived automatically

Area covered
Description

The 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 routing, retention basin design and inundation mapping activities, helping to minimise flood risk within communities across the country. HIRDS uses a regionalised index-frequency method to utilise all available historical rainfall records gathered from multiple agencies. Each surface contains rainfall depth (in mm) for a given average recurrence interval (in years) and event duration (in hours) on a 2 km grid. Version 4 of this data set was prepared in consultation with Regional Councils and was funded through an Envirolink Tools Grant. See here for more information and its webpage HIRDS . In preparing HIRDSv4, all reasonable skill and care was exercised and the best available data and methods were used. Nevertheless, NIWA does not accept any liability, whether direct, indirect or consequential, arising out of the use of this tool.******************************************Work with this layer in the ArcGIS OpenData Portal****************************************** If you scroll to the bottom of the hub page for HIRDS v4, there’s a button in the lower right to “Open in ArcGIS Online” – click it A new browser tab opens with the so-called “Item details page” for the layer._Item Page Created: 2018-08-02 02:37 Item Page Last Modified: 2025-04-05 16:09Owner: NIWA_OpenData

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