Shoreline vectors for MSL, MHHW, and LWM

This folder includes three shoreline vectors for each survey: 1) at Mean Sea Level (MSL) and 2) at Mean Higher High Water (0.329 m above MSL), both derived as contours from the Digital Terrain Model. These contours underwent a review process for necessary adjustments, such as merging line segments or removing erroneous lines or points. The third contour 3) represents the surveyed shoreline position at the top of the beach toe, typically corresponding to Mean Lower Low Water (-0.251 m relative to MSL). The name formatting for these contours are YYYYMMDD_datum.geojson, and each contain two attribute; the contour elevation and the survey date.