Welcome To Whitehall Township Whitehall Township is located in the center of the Lehigh Valley. The Township is one hour north of Philadelphia and an hour and half from New York City.
SALINITY OVERVIEW Salinity is the concentration of dissolved salts in water, usually expressed in parts per thousand (ppt). Objects float higher in salt water than fresh water because salt water is denser (heavier per unit of volume).
All over the globe and from the top of the ocean all the way to the bottom of the ocean, salinity is between ~33-37 ppt or psu (average salinity of the ocean is 35 ppt). The image shown on this page shows salinity measured at the surface of the ocean across the globe.