Sheepscot Bay - Lower Mark Island Swell ForecastUnited StatesMELincoln CountySheepscot Bay - Lower Mark Island1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIISheepscot Bay - Lower Mark Island swell forecast issued today at 7:48 am. Next forecast at approx. 7:48 am.Get an account to remove ads