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Twin Harbors State Park is a public recreation area covering 225 acres (91 ha) on the Pacific Ocean two miles south of the town of Westport in Grays Harbor County, Washington. [2] The site was once a U.S. Army training ground, which the state began acquiring for park use in 1937. [ 3 ]
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 Padilla Bay National Estuarine Research Reserve is an area of 8,004 acres (32 km 2) of estuary located in Skagit County.The reserve contains the Breazeale Interpretive Center, which features exhibits about the natural history and ecology of the estuary and bay, fish tanks, a hands-on room and a video theater.
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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.
Predictions for a year’s tides at that location can then be produced in 8–15 hours. [6] The calculations Tide-Predicting Machine No. 2 can perform in 1 day would require a person 125 days to perform by hand. [2] Around 1915, the machine was used to produce annual tide tables for 70 major ports worldwide. [4] Additional ports were added in ...
The East, West, and Middle Forks all originate north of Grays Harbor and flow generally south. The East Fork Hoquiam River is the longest, at 22 mi (35 km) long. It joins the West Fork to form the main stem Hoquiam River near Hoquiam and Aberdeen. [6] The West Fork and Middle Fork are both 9 mi (14 km) long.
A Standard port is a port whose tidal predictions are directly given in the Tide tables. [1] Tide predictions for standard ports are based on continuous observation of tide over a period of at least one year. These predictions are given in feet or meters, with respect to the chart datum for average meteorological conditions. [2]