Marshmallow-like Formations on Cannonball River at Regent, ND

Marshmallow-like formations were photographed on the Cannonball River at Regent, North Dakota (USGS streamgage 06350000) on April 3, 2018. Foam is produced naturally from organic material in the water in combination with turbulence resulting from water flowing over the weir. The cold temperatures allowed the foam to freeze into these unique marshmallow-like formations.