It’s all about the Harriman, baby – News on TAP At 144 years old, Harriman Reservoir is older than the state of Colorado — and it’s still going strong. Source: It’s all about the Harriman, baby – News on TAP Share this:Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Click to share on Facebook (Opens in new window)Like this:Like Loading...