Nationwide Groundwater Recharge Model

Interactive web map

This is an interactive map modelling the monthly data of 1km x 1km rainfall recharge to groundwater, from Jan-2000 – Dec-2014.

The National Groundwater Recharge Model (NGRM) was developed to demonstrate the utility of satellite data and global models by development of a rainfall recharge model that is consistent over all regions of New Zealand. The NGRM has a 1 km × 1 km model grid that covers most of New Zealand and uses a cell-by-cell soil water balance approach to estimate rainfall recharge.

  • National Groundwater Recharge Model Data

    The National Groundwater Recharge Model is provided in monthly time steps from January 2000 to December 2014 as a netcdf (netCDF4) file that contains five variables: Time, Latitude, Longitude, Recharge, Uncertainty. Data are mapped in the WGS84 Projection (EPSG:4326).

    Access the data here(external link)

  • Terms of Use

    Creative Commons C BY 4.0.0 (external link)

    Where the dataset is used in a figure, GNS Science requests attribution in the following manner: © GNS Science 2019.

    “Where the datasets is used for research, GNS Science requests acknowledgement of the publication describing these data: Westerhoff, R.S.; White, P.A.; Rawlinson, Z.J. 2018 Incorporation of satellite data and uncertainty in a nationwide groundwater recharge model in New Zealand. Remote Sensing, 10(1): article no. 58; doi: https://doi.org/10.3390/rs10010058(external link)

    GNS Science does not warrant or represent that the Data is accurate or complete, nor that it is fit for any purpose. The parties acknowledge that the Data is being licensed to Recipient for business purposes and that the Consumer Guarantees Act 1993 does not apply.

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