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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 ...
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).
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Willapa Bay is fairly shallow: more than half of its surface area lies in the intertidal zone, and half of the volume of water inside it enters and leaves with every tide. The bay is an estuary formed when the Long Beach Peninsula, a long sand spit from the Columbia River to the south, partially enclosed the estuaries of several smaller rivers.
King tides are the highest tides. They are naturally occurring, predictable events. Tides are the movement of water across Earth's surface caused by the combined effects of the gravitational forces exerted by the Moon, Sun, and the rotation of Earth which manifest in the local rise and fall of sea levels.
This is a list of natural lakes and reservoirs located fully or partially in the U.S. state of Washington. Natural lakes that have been altered with a dam, such as Lake Chelan, are included as lakes, not reservoirs. Swimming, fishing, and/or boating are permitted in some of these lakes, but not all.
The Long Beach Peninsula is known for its continuous sand beach 28 miles (45 km) in extent on the Pacific Ocean side, claimed to be the longest beach in the United States. It is a popular vacation destination for people from Seattle, Washington (165 miles (266 km) distant) and Portland, Oregon (115 miles (185 km) distant).
Loomis Lake is a freshwater lake located on the Long Beach Peninsula in Pacific County, Washington.It covers an area of about 167 acres, making it the largest lake on the peninsula, although it is very shallow, with a maximum depth of only about nine feet.