Changelog

2026 v1 — Major Update (21/08/2026)

IFD Datasets

  • "BOM IFD" option renamed to "Default IFD", which now provides the default IFD datasets for your catchment jurisdiction (Including the possibility of being an envelope of multiple datasets) for the Current (2030) baseline, Historical (1961-1990) baseline and Native baseline. The native baseline table is excluded when an envelope of different datasets is recommended.
  • Added a note to the Default IFD layer info advising that for most designs you should consider how IFD will change over the design life
  • Added "All IFD Datasets" layer, displaying all available IFD datasets for comparison
  • Added "ALL Durations and AEPs BoM IFDs" layer, giving the full BoM IFD table in one grid, including the very frequent AEPs (12EY to 2EY) and very short durations (1 to 4 minutes) not shown in the other IFD layers
  • Added "Climate Change Adjusted IFDs" layer with 2030, 2050, 2090 and historical (1960-1990) baseline tables for SSP1, SSP2, SSP3 and SSP5 scenarios
  • BOM IFD depths are now displayed as a standard IFD table, limited to common AEPs
  • BOM data source link added to BOM depths metadata
  • All dataset layers now use the representative point for their calculations if the true centroid does not fall within the catchment
  • SEQ QRA IFD dataset now available
  • The IFD datasets release year is now displayed alongside each dataset name (e.g. BOMIFD(2016))
  • Added the change in temperature (delta t) from the 1960-1990 baseline for Default IFD and Climate Change Adjusted IFD layers
  • All IFD values now rounded to 3 significant figures
  • AEP values made consistent across all IFD datasets for consistent comparison
  • Preburst ratios now stored instead of depths, and calculated from the Current (2030) Default IFD depths
  • Added jurisdiction-specific information pages for Coffs Harbour and QRA regions
  • Updated study link on the Wollongong jurisdiction-specific information page
  • Fixed a bug causing the Coffs Harbour IFD table to not display correctly
  • Optimised queries and calculations, offering a significant increase in computation speed

Losses

  • Added "Climate Change Adjusted Losses" layer, scaling the storm losses for 2030, 2050 and 2090 under SSP1, SSP2, SSP3 and SSP5 scenarios using the ARR V4.2 initial and continuing loss rates of change for the NRM cluster
  • Storm losses are now displayed at the Current (2030) baseline, scaled from a 1961-1990 native baseline (the same as the BoM IFDs) using the ARR V4.2 loss rates of change for the NRM cluster. The adjusted initial and continuing losses are shown to two decimal places so the adjustment is visible. The native (1961-1990) baseline losses are shown below the Current (2030) losses (for the ARR 2016 storm losses, with initial losses to one and continuing losses to two decimal places, matching the native row of the Climate Change Adjusted Losses), and each table has its own layer info giving its baseline (and for the Current (2030) losses the ΔT, NRM cluster and rates of change). In the TXT download the native losses follow the existing storm losses block in a separate _NATIVE block
  • Burst initial losses and the preburst temporal pattern initial loss contours now use the Current (2030) baseline storm initial loss, consistent with the Current (2030) Default IFD depths used for the preburst depths
  • -50 values in the ARR 2016 storm losses are now treated as missing data. They were previously shown as losses of -50 mm and -50 mm/h, and included in catchment averages. Where part of an uploaded catchment has no loss data, only the available values are used and the layer info notes this

File Upload & Input

  • Added support for GeoJSON and KML file uploads (polygon geometries only)
  • Added optional catchment outlet input, used in place of the centroid for jurisdiction-sensitive layers (Default IFD, Storm Losses, Preburst, ARF)
  • Fixed bug with layer geometries not rendering on the map when using point input
  • Uploaded catchments larger than 40,000 km2 are now rejected with a message
  • Added warning note to Probabliliy Neutral Burst Initial Loss layer to indicate when catchment is only partially contained within data region

Results Page

  • "Selected Regions" renamed to "Selected Datasets"
  • Representative centroid note now displayed at the top of the results page when the true centroid falls outside the catchment boundary
  • Updated metadata to display dynamic notes with more relevant information
  • Improved column widths for layer information display

Downloads

  • Name, Project and Company input fields added to both the home page and results page
    • This data is not stored and is optional in case signing of the download is required
  • User details entered on the home page are pre-filled on the results page
  • PDF report has been fixed, and now includes:
    • ARR logo
    • Catchment map, showing catchment extent, centroid and outlet (if provided)
    • Date at the top
    • User details (if provided)
    • Separate input data table
    • Improved "Selected Datasets" section
    • Fixed formatting of All IFD Datasets output in PDF and text file exports
  • Added CSV download button for all IFD tables
  • Added ZIP download button for IFD sections
  • All durations now included in text file outputs (duration cutoff removed)
  • Temporal pattern outputs now provide download links to .zip files
  • Data Hub version now shown at the top of the results page and the PDF, JSON and TXT downloads
  • Updated the about page to reflect recent changes


2024 v1.01 (11/09/24)

  • Slight amendments to climate factors to line up with temperature increases presented in ARR Book 1, Chapter 6: Climate Change Considerations (Version 4.2)


2024 v1 (27/08/24)

  • Added climate change factors (rainfall and losses) in conjunction with the release of updated ARR Book 1, Chapter 6: Climate Change Considerations (Version 4.2)
  • Climate Change factors calculated using temperature increase available from the IPCC AR6 Synthesis report. Temperatures re-baselined to 1961-1990 baseline then ARR4.2 Equation 1.6.1 was applied


2020 v1 (3/03/20)

  • Developement server no longer provides PDF versions of the output. PDF's are still avilable on the main data-hub page.


2019 v1 (9/05/19)

  • Update climate change factors due to change in values on CSIRO and Bureau of Meteorology, Climate Change in Australia website (www.climatechangeinaustralia.gov.au/) and older formula being used
  • Addition of NSW specific data: Wollongong/Shellharbour IFD and NSW losses advice



2018 v1 (10/12/2018)

  • NSW specific advice has been added and a framework for exploring alternate losses has been put in place (see 'NSW Specific' link at top)
  • Overhauled backend to allow for more flexibilty in additional layers
  • Added regional layers support. When regional layers are within a request region it will always be given in the output, otherwise it will not be shown in the output.
  • Added Burst Initial Loss and Illawarra IFD regional layers
  • Added JSON output
  • Added reprojecting of non-latlon (EPSG: WGS84) shapefiles
  • Slightly changed the format of the API request to handle the JSON output option
  • Text output has been changed to fix the representation the column names for certain layers, values remain unchanged


2017 v2 (11/04/2017)

  • Overhauled the backend to be faster and more reliable
  • Changed the look of the PDF and generation technique to be neater and faster
  • Updated temporal patterns
    • Areal patterns now have an event id
    • Areas with two temporal pattern regions (eg Wet Tropics and East Coast North) will provide both sets of temporal patterns and denote the catchment is in an overlapping region
    • Updated the temporal pattern file names to consistently correspond with the 'code' attribute
  • Added publications page
  • Added some notes regarding the use of Storm Losses to the results page
  • Changed baseflow factors to be their correct terms "Volume Factor" and "Peak Factor"


2017 v1 (13/01/2017)

  • After great industry feedback (Don Carroll), latitude and longitude are now displayed in the generated text output file
  • Section tags are now correctly displaying for all data outputs in the text file.
  • Changed GET requests format, see About page for more information
  • Fixed an issue where points located exactly halfway between grid cells were being rounded differently to BoM, resulting in discrepencies for preburst in those border cases
  • Minor text changes on the main results page


2016 v1 (4/07/2016)

First live version