This depends on the number of credits purchased. For organisations making large bulk credit purchases, CEH will manage credit allocations for a group of users. Please see the bulk purchase page for more information.For other users/organisations, this facility is not available. The system will, however, allow multiple concurrent sessions using the same login details, so a single account can be shared between multiple individuals. If you are sharing your account with one or more colleagues, you may find it helpful to adopt a convention whereby the names you assign to purchased catchments/points are prefixed with your initials. This will allow you to search for your own catchments using the search widget at the bottom of the tools menu:
To rename an existing catchment, select it from the map or from your Catchments list, then use the pencil icon under the catchment name:
The same facility is available for renaming purchased points
If you place orders of less than 10,000 credits, these credits will not expire. Credits that are purchased in blocks above this threshold at the higher discount bands (see the pricing page) expire after one year. See also the bulk order purchasing page.
Once a catchment has been purchased it remains associated with your account granting you perpetual access to the data above.
The FEH Web Service has been designed to be compatible with ReFH, versions 2.1 and upwards, and therefore purchased catchment descriptors can be exported in.xml format & loaded directly into the software.
To process point data, version 2.2 or higher of ReFH is required.
ReFH can be bought from the Wallingford HydroSolutions online shop.
The FEH Web Service provides the rainfall depths for given durations and return periods for the FEH 1999 and FEH 2013 models for a catchment together with a comprehensive suite of catchment descriptors. ReFH 2.1 software enables interpretation of these data through the Revitalised Flood Hydrograph (ReFH) model. The software enables you to estimate design flood hydrographs for catchment application in both rural and urbanised catchments using the latest methods which draw on both the FEH 1999 and 2013 rainfall models. The technical guidance report details the full scope of the ReFH software. The FEH 13 rainfall model is a significant advance over the original FEH99 rainfall model and ReFH 2 has been calibrated to use either model. Previous versions of ReFH (ReFH1 and the ReFH spreadsheet) are not compatible with the FEH 13 rainfall model.
Payment can also be made by cheque or BACS transfer. Please contact us and we will arrange for a proforma invoice to be issued. We will allocate the credits to a single account of your choosing once payment has been received.
The minimum order is for 1000 credits (sufficient for 100 catchment retrievals, or 500 point retrievals), ordered for a single account at one time. This threshold has been set to help cover the administrative overheads of processing payments manually.
For the avoidance of doubt we would like to remind you that purchased credits do not expire unless you make a high volume bulk purchase (10,000 credits or more).
In contrast to an entire catchment, a point is a single location on the map accurate to 1m. With a point you get
The FEH99 DDF parameters (C, D1..3, E & F) are not available for points
Once a point has been purchased it remains associated with your account granting you perpetual access to the data above.