Flooding in Pagham

Tidal, coastal and surface water flood risk

Flooding is a recurring concern in Pagham. The village's low-lying position on the coast, combined with its proximity to the tidal harbour, means that parts of the parish are at risk from tidal flooding, coastal flooding and surface water flooding. The risks are not uniform across the village, with the most vulnerable areas being the harbour shore, the beach frontage and the low-lying land between the harbour and the village.

Tidal flooding occurs when exceptionally high tides, driven by storm surges or unusual atmospheric conditions, push water up through the harbour and onto adjacent land. Spring tides combined with southerly gales can produce water levels that exceed the normal tidal range, flooding roads, footpaths and, in severe cases, properties near the harbour edge. The Environment Agency issues flood warnings for Pagham Harbour, and residents in affected areas are advised to sign up for the warning service.

Coastal flooding from wave overtopping affects properties near the beach. During severe storms, waves can push water and shingle over the crest of the beach and onto the roads and gardens behind. The steep shingle beach normally provides a degree of natural defence, but prolonged storms can flatten the beach profile and reduce its effectiveness.

Surface water flooding is a problem in parts of Pagham where the flat terrain and clay subsoil mean that heavy rain has nowhere to drain. Standing water in fields, gardens and on roads is common after prolonged rainfall, and some properties have been fitted with pumps to manage groundwater levels.

New housing development on the northern fringe of Pagham has raised concerns about the impact of additional hard surfaces on drainage and flood risk. Opponents of development argue that building on greenfield land removes natural drainage capacity and increases the risk of surface water flooding downstream.

Flood risk is a material consideration in planning decisions for Pagham, and Arun District Council requires flood risk assessments for development in vulnerable areas. The long-term trend, with rising sea levels and more intense rainfall events, suggests that flooding will become a more frequent challenge for the village.

The parish council has pressed for improvements to drainage infrastructure, including better maintenance of existing ditches and watercourses, and the provision of new drainage capacity as part of any development schemes. The response from the responsible authorities has been mixed, with some improvements made but systemic issues remaining unresolved.

The human impact of flooding is significant. Properties that have been flooded face long and expensive recovery processes, with insurance costs rising and the stress of repeated flood events taking a toll on residents' wellbeing. The uncertainty of living in a flood-risk area, not knowing when the next event will occur, adds a background anxiety that is difficult to quantify but real for those who experience it. Flood resilience measures, including raised electrical sockets, waterproof plaster and flood barriers, can reduce the impact of flooding, but they do not eliminate the risk or the worry.

Climate change projections indicate that flood risk at Pagham will increase over the coming decades. Rising sea levels, more intense rainfall and changes in storm patterns are all expected to contribute to a more challenging flood environment. The long-term implications for the village are significant, and planning for future flood risk is one of the most important issues facing the parish council and the local authorities.