Not a great picture, this is an issue I have been dealing with for some time now, in my capacity as Chair of Conwy Drainage Group. This is a camera shot of the surface water drains in Winllan Ave in Llandudno. In this photo you can see a rock in the drains, which has probably assisted in the flooding of this area. The problem was not helped by cars driving at speed through the water and splashing it against some residents front doors. I hope the next down pour of rain, drains a lot quicker now this restriction has been removed.
That said we have a massive problem with silting in our drainage system in Llandudno and I will be pursuing the relevant agencies to tackle this issue and will be asking them to publish their maintenance schedules in order to tackle silting.
Worth mentioning that this drain had been pressure rodded 3 times up to this point and had quite a quantity of sand removed.