Home | About Us | Contacts | Help | Feedback | SEARCH Global | Australia | NSW | Vic. | Qld | WA | SA | Tas. | ACT | NT | Ant. | Weather & Warnings | Hydrology | Climate | Numerical Prediction | About Services | Learn About Meteorology | Registered User Services |

You are in: HAS Home > Design IFD Rainfall > CDIRS Limits

CDIRS

What is CDIRS?

CDIRS (Computerised Design IFD Rainfall System) was developed by the Bureau of Meteorology to allow automatic determination of a full set of IFD curves, tabulated data and polynomial coefficients for any location in Australia, simply by supplying its latitude and longitude. It is compatible with the manual procedures given in Book 2, Vol. 1 of Australian Rainfall and Runoff: A Guide to Flood Estimation (Inst. Engrs Aust., 1987).

An example of the standard CDIRS product is provided here.

CDIRS Locations

CDIRS IFD data can be extracted for any location from a database of grid point values. The data is gridded to a resolution of 0.025 degrees ie. 1/40th and is available for all of the Australian mainland, Tasmania and extends offshore sufficiently to include most nearby islands, eg Thursday Island.

All requests for CDIRS data will be provided for the grid point nearest to the requested location. For example, a request for -35.278 145.321 will be rounded to the nearest grid point, -35.275 145.325.

Last Modified: 06 April 2006, Hydrometeorological Advisory Service.