@noiseyland windfinder uses data from the American model GFS with 22 km grid. Windy provides also the more detailed model ECMWF (grid=9 km). As you can see here https://www.windfinder.com/forecast/lake_coleridge_ryton_bay Lake Coleridge has elevation 0 m !!! Do you believe it?

@noiseyland 76kt is really weird ! Are you sure the height slider is set to "surface" or is set higher?