For many, the mere thought of donning swimsuits and diving into ice cold water is enough to generate a few goosebumps. But for Bill Oswald and his sons, a dip into Blue Marsh Lake on a 40-degree ...

Algal bloom observed at the Blue Marsh Lake's swim beach on Oct. 6, 2021. BERN TWP., Pa. — If you're still thinking about dipping your toes in the water at Blue Marsh Lake, the U.S. Army Corps ...

But for Bill Oswald and his sons, a dip into Blue Marsh Lake on a 40-degree Saturday morning was a breeze. “I was expecting it to be a lot worse,” said Oswald, a Muhlenberg Township resident.