This data set includes measurements and derived time series, together with data and information based on analyses of these series. The data set includes a model which gives data best fitted to almost any location along the coast. Time series available for a location: Water level data, water level forecasts, predicted tidal data and high/low waters, monthly and yearly min/max and mean values. and projections of future sea level changes based on different emission scenarios from IPCC The data set includes vertical reference levels such as mean sea level, Chart Datum and land levelling datum, tidal datums, return heights for extreme water levels (high/storm surges and low), and levels used for coastal planning, with adaptations for climate change. Furthermore, there are numbers for land uplift and harmonic constituents for predicting tides. Requesting data for a given location from the API for water level data, it will provide modelled data best fitted to this locations. Only requests for data from a station (or its position) will return data observed at this location. At the moment, only the derived times series for the permanent tide gauges are available from the API. Raw sensor data and time series from the many hundred other locations with measurements are available upon request.