At low tide, water would flow from the lagoon into the sea, and from the sea into the lagoon at high tide.
Without being prescriptive it is expected that a typical station configuration will consist of a primary tide gauge, two under water pressure sensor (secondary tide gauge), data logger, DCP geostationary satellite transmitter, modem, battery backup, solar panel, cables, mountings.
The highways that ring Manhattan along the water sit atop a series of tide gates that are designed to drain water from the road and keep water from gurgling up from below, said Sam Schwartz, a former city transportation commissioner who now works as a consultant.
With rivers flowing weakly, the tide pushed sea-water in, both cutting fish catches and preventing irrigation.
High water mark: the highest reach of the water at high tide.
That is, the moon pulls hardest on the Earth's oceans on the side facing the moon, making a bulge of water (high tide).
It usually began with standing water: a tide pool or pond or salty shallow, wet enough to breed bacteria but not so wet as to wash them away.
Here mountains give way to an expanse of deserted white sand that runs hundreds of metres from shore at low tide, with the warm water waist-deep for hundred of metres more.
The glossy black fin and back of a minke whale rose a hundred yards astern, two yellow-striped dolphins broke water and plunged down again, and then the flow of the turned tide could be seen as a chop on the water, small standing waves that indicated the Minch was reversing its direction.
Flood-tide current: flow of water in a given direction that takes place between low water and high water.
Tidal inlet: a river mouth or narrow gap between islands, within which salt water moves landwards during a rising tide.
Just a couple of minutes earlier, on the first full day of a holiday with his wife and anxious to hit the famed Phuket blue water, Boardman had watched the tide off Patong beach recede suddenly.
Flood-tide: rising tide, part of the tidal cycle between low water and the next high water.
Ebb-tide: the falling tide, part of the tidal cycle between high water and the next low water.
When the tide is out, the sea leaves little pockets of water behind.
Late this morning was high tide along much of the coast, and the highest water levels of Isaac are likely being experienced at many locations.
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There's a swirling blend to the city, like the water in the creek where it meets the incoming tide.
Tide: periodic rising and falling of large bodies of water resulting from the gravitational attraction of the moon and sun acting on the rotating earth.
Then there is the plea that has been going out, coming from the U.S. Marines, coming from the military to those in the civil service, to try to get the police officers to come back to help stem the tide of looting, to try to get those from the water department, the sanitation department, and with the electricity and utilities.
The RNLI urged beachgoers to check tide tide times and local weather forecasts before visiting and to ensure any water sports equipment they use is in a seaworthy condition.
Flooding throughout the city was extensive, especially in Manhattan, with areas from the Lower East Side to the Battery under significant amounts of water, though it was receding from high-tide levels.
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Dylan's body was found on Thursday on the mud flats at the high tide mark less than half a mile from where he went into the water.
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The Tide still were sure to fall short of the three-year high-water mark for the opening round.
Others were simply overwhelmed by the amount of water pushed ashore by the giant storm, which hit at high tide during a full moon.
Ernesto will cause a surge when it reaches the coast, increasing water levels by as much as 2 to 4 feet above normal tide levels in the area near and north of where the storm makes landfall, the hurricane center said.
Ernesto will cause a surge when it reaches the coast, increasing water levels by as much as 1 to 3 feet above normal tide levels in the area near and north of where the storm makes landfall, the hurricane center said.
She said although the water had gone down by about 2in (5cm) overnight, high tide later will see it rise again.
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