Residents on the Glasdir Estate in Ruthin will join together today to mark a year since the devastating floods last year.
122 homes were flooded on the estate in Denbighshire last year, when the River Clwyd burst its banks.
A report in September blamed blocked culverts for the flooding
Flood relief work is due to start in the area before Christmas.
Hundreds of homes in nearby St Asaph were also flooded when the River Elwy burst its banks.
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Fire crews have been responding to reports of flash flooding in Carmarthenshire. Some homes have been affected.
Medication designed for animals was taken from the building in Abertillery on Thursday night.
More than a thousand riders will be taking part in a series of events in and around the town.