Our offices will be shut from close of business on Tuesday 23rd December 2025 until Monday 5th January 2026. Between these dates only credit card payments for ReFH 2 and WINFAP 5 will be dispatched, all other orders will go out in the new year. We will be providing limited software support on Monday 22nd and Tuesday 23rd December and the last posting date for LowFlows 2 dongles will be Thursday 18th December until Monday 5th January.
**Wishing you a very Merry Christmas and Happy New Year** :christmas_tree:
Our offices will be shut from close of business on Tuesday 23rd December 2025 until Monday 5th January 2026. Between these dates only credit card payments for ReFH 2 and WINFAP 5 will be dispatched, all other orders will go out in the new year. We will be providing limited software support on Monday 22nd and Tuesday 23rd December and the last posting date for LowFlows 2 dongles will be Thursday 18th December until Monday 5th January.
**Wishing you a very Merry Christmas and Happy New Year** :christmas_tree:

Can I apply rainfall uplift factors for climate change assessments?

You can add a climate change factor to any design rainfall return period using the ReFH 2.3 model.

These should be entered as a factor e.g., enter 1.3 for a 30% climate change uplift to the rainfall. This creates additional design rainfall series; the name will identify it as a climate-change adjusted series, e.g., “10 year 1.3 CC”.