Tidal Flood Risk

Tidal Defences: HAT and ML

Vessel on HUmber Estuary

The assessment of the risk of coastal flooding is dependent upon accurate figures for tidal levels and their relationship to the vertical land datum. Our analysis of tide gauge data precisely determines LAT, ML and HAT which taken together with the gauge datum provides vital information for the specification of coastal defences. With over 15 years experience in the tidal analysis and prediction field we are uniquely qualified to carry out such tidal analysis.


We can also provide a joint probability function of tidal height, tidal surge and wave height in order to estimate the likelihood of a overtopping and a material breach of defences.


This information can assist in satisfying UK PPS25 & TAN15 coastal & shore-side planning applications and in meeting similar planning criteria world-wide.