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The Hydrological Outlook is informed by data from several sources.

For each monthly outlook, a number supporting outputs (click here for an example for September 2013) are available to users that register and login to the site. These outputs contain some elements of raw information, or information provided with little or no interpretation. Users are therefore advised to use these supporting outputs with great care.

Once logged in, the outputs appear as an additional dropdown option within the main navigation menu, and you can see supporting outputs for all previous months via the archive.

Registration requires you to provide minimal information. This may be used from time to time to inform you of changes to the Hydrological Outlook UK. It will not be passed to third parties.