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).
Typically seawater contains between 33 to 37 grams of salt per liter of seawater, although the extremes of salinity can range from 28 to 40 g/L. Oceanographers measure salinity in parts per thousand (ppt), thus typical seawater is between 33 to 37 ppt.