Mean High Water Springs tide line extracted from high resolution Digital Elevation Models, typically derived from airborne LiDAR datasets. Date of survey varies spatially, query...

High Water Mark of Ordinary Spring Tide. Digitised from the OS 2nd Edition. Scale 6 inch map (1:10,560) county series. Epoch 1890 to 1959. The 'soft' or erodible shoreline has...

Mean High Water Spring, digitised from OS National Grid 1:10,560/1:10,000 sheets. Epoch 1956 to 1995. Extent: Soft or Erodible shorelines. This data was digitised as part of the...