Waves on Lakes
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•Fetch to attain a fully developed sea (FDS) - Ffds
•       Ffds (nm)  = 3.17 x Wind 4/3  (kts)
•On a lake waves happen sooner and grow faster
•Wave Height on Lake = .020 x Wind 2 x (Fetch/Ffds)1/2
•                                                        = .011 x  Wind 4/3  x Fetch (nm)
•Wind duration for fully developed waves
– Time (hrs) =  H   (ft)
•
Wind
Lake Fetch