A combination of heavy, persistant rainfall and high tides can occasionally lead to the flooding of low-lying areas in the Island. In this section we tell you ways of protecting your property from flooding, and who you should contact if your property appears to be at risk of flooding.
Flooding is normally caused by heavy, persistant rainfall, high tides or a combination of both. In the case of prolonged rainfall, it is often the case that streams get blocked and can potentially overflow onto land or into property. To prevent this from happening, it is important that property and land-owners are aware of their obligations regarding streams, douits, culverts or drains on their land.
These obligations are to ensure that streams are kept clear of debris, e.g. leaves, twigs, litter, silt etc. Guernsey's surface water drainage system is able to cope with a significant amount of rainfall, but if the streams are blocked then this will adversely affect how well the system will cope with prolonged rain.
Customers should be particularly careful when trimming hedges, trees or bushes to ensure that the leaves and twigs do not end up in streams.
As customers who live on the coast will know, it is important to have sandbags and wooden boards available to block driveways at properties should a high tide cause the sea to come over the sea walls.
If your property does become flooded, or is at the apparent risk of flooding, in the first instance you should call the Fire & Rescue Service on tel: 724491. Guernsey Water and States Works will work with them to reduce the chance of flooding affecting properties.