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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 St. James City CDP occupies the southern half of Pine Island, with the town center situated at the southern end of the island. The community is bordered by San Carlos Bay to the south, by Pine Island Sound to the west, by San Carlos Bay, Matlacha Pass, and Pine Island Creek to the east, and by the community of Pine Island Center to the north.
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.
Head of tide, tidal limit [2] or tidehead [3] is the farthest point upstream where a river is affected by tidal fluctuations, [4] or where the fluctuations are less than a certain amount. [5] The river section influenced by tides and marine forces but without salinity is a tidal river , while downstream areas are brackish and termed estuaries .
At neap tides both tides in a day were similar, but at springs the tides rose 7 feet (2.1 m) in the morning but 9 feet (2.7 m) in the evening. [ 31 ] Pierre-Simon Laplace formulated a system of partial differential equations relating the ocean's horizontal flow to its surface height, the first major dynamic theory for water tides.
The term tidewater may be correctly applied to all portions of any area, including Virginia, where the water level is affected by the tides (more specifically, where the water level rises when the tide comes in). In the case of Virginia, the Tidewater region includes the land east of the Fall Line, the natural border with the Piedmont Region.
St. Lucie Estuary Watershed. The St. Lucie River is a 35-mile-long (56 km) [1] estuary linked to a coastal river system in St. Lucie and Martin counties in the U.S. state of Florida. The St. Lucie River and St. Lucie Estuary are an "ecological jewel" of the Treasure Coast, central to the health and well-being of the surrounding communities. [2]
According to the U.S. Census Bureau, the county has a total area of 179 square miles (460 km 2), of which 142 square miles (370 km 2) is land, and 37 square miles (96 km 2) (20.5%) is water. [4] The James City County GIS office specifies the county as being 115,011.9 acres (46,543.7 ha)