Hydrodynamics

A hydraulic appraisal has been conducted for the Hastings beach using all available data from previous studies and recent monitoring of the adjacent coast. The hydrodynamic climate is the driving force behind sediment transport and dictates the natural appearance of the beach both in terms of topography and sediment composition. Primarily maintained as a crucial part of the sea defences it also has significant amenity value and is linked to a number of commercial activities, not least the Hastings fishing fleet.

A suitable shingle beach can dissipate wave energy, reduce overtopping and prevent damage to the seawall. As a consequence of the dynamic nature of shingle, the hydrodynamic characteristics result in sediment transport and dictate the beach face gradient and orientation of the berm. Without suitable controlling structures this can lead to erosion of the beach and failure to maintain an adequate defence. The 2009 remedial works were designed to rectify such a problem east of Hastings Pier (below). Refurbishment of existing groynes, combined with the construction of a new rock groyne, and recycling of beach material acting to create a larger stable beach.

Impact of a recent storm event at Hastings Prior to remedial works in 2009

For a more detailed explanation of Hastings hydrodynamics see Water Level Data and Wave Data, which were both calculated for the Hastings Coastal Adaptation Pathfinder.

Back to Hastings Coastal Adaptation Pathfinder