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Champlain's 1607 chart of the Kennebec. In 1605, French explorer Samuel de Champlain navigated the coast of what is now Maine, charting the land and rivers of what was then called New France, L'Acadie, including the Kennebec as far upriver as present-day Bath, as well as the St. Croix, and Penobscot rivers. [4]
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 New Meadows River is a 12-mile-long (19 km) [1] tidal embayment in Maine at the northern end of Casco Bay. It serves as the boundary between Cumberland and Sagadahoc counties for its entire length. It begins in a marsh on the boundary between Brunswick and Bath, less than 1 mile (1.6 km) south of Merrymeeting Bay, and proceeds southward.
The waters of the bay flow out through The Chops at low tide, while high tide brings a mix of fresh water and seawater back up the Kennebec. The river flow volume from six rivers typically exceeds the volume of the incoming tide. Combined with the bottleneck of The Chops, the result is a tidal waterbody with very little salt, known as brackish.
In Hampton on Sunday, tides are expected to surge roughly 12.4 feet high around noon, according to meteorologist Jon Palmer. In Portland, Maine, tides could reach 13.7 feet.
The water stops rising, reaching a local maximum called high tide. Sea level falls over several hours, revealing the intertidal zone; ebb tide. Oscillating currents produced by tides are known as tidal streams or tidal currents. The moment that the tidal current ceases is called slack water or slack tide. The tide then reverses direction and is ...
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.
A chart datum is the water level surface serving as origin of depths displayed on a nautical chart and for reporting and predicting tide heights. A chart datum is generally derived from some tidal phase, in which case it is also known as a tidal datum. [1] Common chart datums are lowest astronomical tide (LAT) [1] and mean lower low water (MLLW).