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Tide tables, sometimes called tide charts, are used for tidal prediction and show the daily times and levels of high and low tides, usually for a particular location. [1] Tide heights at intermediate times (between high and low water) can be approximated by using the rule of twelfths or more accurately calculated by using a published tidal ...
The Ordinance of 1641 extended the property rights of riparian owners from the line of low tide to a maximum distance of 100 rods (1,600 ft; 500 m) from the line of high tide. Generally, other states drew the line of private property at high tide. However, extending shore lines into bordering bodies of water was not unique to Boston.
The outer beach, or "backside," of Cape Cod has been the notorious graveyard for more than 3,000 ships since the wreck of the Sparrowhawk in 1626. The high cost in lives and property demanded by the sands of Cape Cod, led to the establishment of the Massachusetts Humane Society in 1786, the first organization in the nation devoted to the rescue and assistance of shipwrecked mariners.
A coastal storm has been lurking off the East Coast of the United States for five days, contributing to persistent coastal flooding, rip currents and rough surf from North Carolina to Maine.
The approximate lunitidal interval can be calculated if the moonrise, moonset, and high tide times are known for a location. In the Northern Hemisphere, the Moon reaches its highest point when it is southernmost in the sky. Lunar data are available from printed or online tables. Tide tables forecast the time of the next high water.
The tides range in height from 3.6 feet (1.1 m) at the bay's mouth and 4.6 feet (1.4 m) at its head. Water depth varies about 4 feet (1.2 m) between high and low tide. The lunar, semi-diurnal M2 tide occurs at a period of 12.42 hours, with two tides occurring in the watershed every 24 hours and 50 minutes.
Tidal range is the difference in height between high tide and low tide. Tides are the rise and fall of sea levels caused by gravitational forces exerted by the Moon and Sun, by Earth's rotation and by centrifugal force caused by Earth's progression around the Earth-Moon barycenter. Tidal range depends on time and location.
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