General, Lehigh History, Special Collections “How to tell the age of a river” Have you ever wondered how to tell how old the water is… in […] Share this: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Click to share on Tumblr (Opens in new window) Tumblr Click to share on Pocket (Opens in new window) Pocket Click to share on Reddit (Opens in new window) Reddit Click to print (Opens in new window) Print