Highest Astronomical Tide definition

Highest Astronomical Tide means the highest water level which can be predicted to occur at a particular location under average meteorological conditions. The water elevation of the highest astronomical tide is expected to occur at a specific location. For Willapa Bay, official readings are observed at Toke Point Station over a nineteen (19) year period and reduced to mean values, then corrected to local tide stations at Nahcotta and Raymond. In the Willapa Bay Conservancy Shoreline Environment in the Pacific County Shoreline Master Program, HAT is used as a benchmark to establish setbacks and buffers for development proposals on shorelands landward of the ordinary high water mark within shoreline jurisdiction.
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Highest Astronomical Tide means the highest tidal level which can be predicted to occur under average meteorological conditions and any combination of astronomical conditions;»
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Highest Astronomical Tide means the highest level of the tides that can be predicted to occur under average meteorological conditions and under any combination of astronomical conditions;
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Examples of Highest Astronomical Tide in a sentence

  • The datum above which clearances are given must be a high water level, preferably Highest Astronomical Tide (HAT), where the tide is appreciable.

  • Each WTG will have a maximum blade tip height of 250 m above Highest Astronomical Tide (HAT), a maximum diameter of 220 m and a minimum 22 m clearance between the Mean High Water Springs (MWHS) and the lowest point of the rotor.

  • Each WTG will have a maximum blade tip height of 250 m above Highest Astronomical Tide (HAT), a maximum diameter of 220 m and a minimum 22 m clearance between the Mean High Water Springs (MWHS) and the lowest point of the blade.

  • The interface level (above Highest Astronomical Tide (HAT)) between the substructure and the wind turbine hub is assumed to be 20m above HAT.

  • It is resolved that Highest Astronomical Tide (HAT*), or a datum as closely equivalent to this level as is practical and acceptable to Hydrographic Offices, be adopted as the datum for vertical clearances.

  • It is recommended that the lights: a Are located not less than 6 metres and not more than 30 metres above Highest Astronomical Tide (HAT); b Have a minimum nominal range of 10 Nautical Miles, taking background lighting into account; c Are synchronized with a flash character according to Mo (U) W ≤15s; d Have a vertical divergence of the projected beam such that the light will be visible from the immediate vicinity of the structure to the maximum luminous range of the light.

  • LAT: Lowest Astronomical Tide; LST: Low Spring Tide; LNT: Low Neap Tide; MSL: Mean Sea Level; HNT: High Neap Tide; HST: High Spring Tide; HAT: Highest Astronomical Tide).

  • The crossing itself would consist of a carriageway with a single lane in each direction, with footways and cycleways, inclining from the new northern and southern roundabouts to provide a 12 metre clearance or air-draft below the crossing (in its closed position) above the navigable channel in the river (i.e. 12 metres above the level of the Highest Astronomical Tide (“HAT”)).

  • It should be noted that SPAs and SACs include European Marine Sites, which are designated sites below Highest Astronomical Tide.

  • Each WTG will have a maximum blade tip height of 250 m above Highest Astronomical Tide (HAT), a maximum diameter of 220 m and a minimum 22 m clearance between the Mean High Water Springs (MHWS) and the lowest point of the blade.

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