The Howth Harbour Tide gauge is part of the Irish National Tide Gauge Network which is a network of tide gauges located around the coast of Ireland collecting water level data as part of the development of a permanent tidal monitoring infrastructure. Parameters collected include; Station (ID), DateTime (yyyy-mm-ddThh:mm:ss), Water Level (Sea Level above Lowest Astronomical Tide [LAT], m) and Water Level (Water Level wrt Ordnance Datum Malin Head, m). The Howth Harbour Tide gauge (53.3913, -6.0681) is owned and maintained by the Marine Institute and has been operational since October 2017. A tide gauge was previously installed in Howth Harbour from October 2006 but decommissioned in 2019. None