WINFAPWINFAP 5 enables you to estimate peak flows and flood frequency curves for gauged and ungauged catchments, using the latest Flood Estimation Handbook (FEH) methods.

At an ungauged site you can automatically create a pooling group of similar gauged sites based on comparison of FEH Web Service catchment descriptors.

At a gauged site you can apply flood frequency analysis techniques to gauged annual maximum and/or peaks-over-threshold flood peak data where available. Flood frequency curves are created by analysis of the pooling group flood peak data.

WINFAP 5 was developed by WHS to implement a range of the industry-standard FEH statistical analysis tools. It uses the latest FEH methods to provide estimates of peak flows and flood frequency curves for gauged and ungauged catchments.

See What’s new in WINFAP 5? and In-depth for additional functionality and scientific advances.

WINFAP is available on an annual subscription, activated online with a serial number. See Licensing for details.

WINFAP 5 uses the new NRFA Peak Flow catchment descriptor xml files, therefore WINFAP 4 can be installed alongside WINFAP 5 to enable continued use of old Peak Flow Datasets (version 9 and earlier) on existing projects. Both WINFAP 5 and WINFAP 4 serial numbers are currently provided.

Current WINFAP Offers

Five WINFAP Licence Deal – For every 5 WINFAP licenses purchased, you will receive one of these licenses for free. The discount will be applied automatically to your basket.

Existing WINFAP-FEH 3 customer? We’re pleased to offer a free 1 year WINFAP subscription for you and up to 4 of your colleagues. To take advantage of this offer, please Contact Us to arrange this, including posting back your WINFAP-FEH 3 dongle.