IDF_CC Tool 9.0

IDF_CC is a publically available web-based intensity-duration-frequency tool to update and adapt local extreme rainfall statistics to climate change. The IDF_CC tool is pre-loaded with 751 Environment and Climate Change Canada rain stations with 10 or more years of data and develop IDF curves based on historical data and curves adjusted to reflect climate change. The tool also allows the development of IDF curves for ungauged locations in Canada. The User's and Technical Manuals (available for download from the Help menu) provide details on how to use the tool and the methodology used to develop the tool.

Version 9.0 of the IDF_CC tool introduces temperature scaling based on the Clausius-Clapeyron relationship, providing users with an additional approach to update IDF curves under projected future climate conditions. This complements the existing Equidistant Quantile Matching (EQM) algorithm, which utilizes precipitation data for climate adjustment.

By accessing any of the options available in this tool you agree with the Terms of Use

We also encourage you to check out the user manual and technical documentation available in the Help section.

Citation:
Simonovic, S.P., A. Schardong, R. Srivastav, D. Sandink and A. Gaur (2026), IDF_CC Web-based Tool for Updating Intensity-Duration-Frequency Curves to Changing Climate - ver 9.0, Institute for Catastrophic Loss Reduction, open access https://www.idf-cc-uwo.ca.

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