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 on 15 Apr.Get an account to remove ads