Editing Tide gauge (section)

==Common applications==
[[File:CascaisTideGauge Interior.jpg|thumb|200px|Interior view of Cascais Tide Gauge showing data recording equipment]]
Tide gauges have a practical application in the shipping and fishing industries where low or high tide levels can hinder or prohibit access to shallow bays or locations with bridges. An example is the [[Cascais tide gauge]] in Portugal, which was originally installed because of the sand bar in the River [[Tagus]] that causes difficulties for shipping entering [[Lisbon]] port. Because of similar problems many industries have installed private tide gauges in ports around the world, and also rely on government agencies (such as [[NOAA]]).

Data collected from tide gauges is also of interest to scientists measuring global weather patterns, the mean sea water level, and trends - notably those potentially associated with global warming.