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).
Saline water is water that contains a significant concentration of dissolved salts. The salt concentration is usually expressed in parts per thousand or parts per million. The United States Geological Survey classifies saline water in three salinity categories. Salt concentration in slightly saline water is around 1,000 to 3,000 ppm, in moderately saline water 3,000 to 10,000 ppm and in highly saline water 10,000 to 35,000 ppm. Seawater has a salinity of roughly 35,000 ppm, equivalent to 35 gram