Fetch- and Depth-Limited Waves

This Javascript app implements Eqns. 3-39 and 3-40 from the Shore Protection Manual. Input is the wind speed u10 measured 10 m above the sea surface, the fetch f, and the water depth h. The calculations adjust wind speed to adjusted wind speed Ua according to Eqn. 3-28a before being used. Calculated results are significant wave height Hs and wave period T.

The calculations assume a flat bottom with depth h, and sufficient time for fully-developed seas. No checks are made to ensure that reasonable values are entered or that the calculations are within the applicable range.


Enter Parameters:
Speed u10
Fetch f
Waterdepth h


Significant wave
height Hs
Wave period T


Coastal Engineering Research Center (1984). Shore Protection Manual. U.S. Army Corps of Engineers, Waterways Experiment Station, Vicksburg Mississippi.


Although this program has been used by the USGS, no warranty, expressed or implied, is made by the USGS or the United States Government as to the accuracy and functioning of the program and related program material nor shall the fact of distribution constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith.
Last revised: 15 April 2015

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