Hydrographic Pump Station Calculator
This tool reads your BOM CSV file (IDF data) where the first column is Duration (minutes)
and subsequent columns are average intensities (mm/h) for various ARI values.
The tool overlays a constant system pump rate and shades the area between the hydrograph and the pump rate line (50% transparency) where the hydrograph is above the pump rate.
It then calculates the total excess volume (m³) above the pump rate.
Visit here to access and download your stormwater data.
http://www.bom.gov.au/water/designRainfalls/revised-ifd/
Make sure to set the units as mm/h and adjust the .csv file to show only the correct stormwater data.
Once the .csv is downloaded, remove rows 1-9, remove column ‘A’, and rename the new column ‘A’ to “Duration”.