United States, Minnesota, Morrison, Camp Ripley National Guard Reservation. In the free-flowing Mississippi River near the DeParcq Woods Campground, 1/4-mile upstream from the State Highway 115 bridge, seven miles north of downtown Little Falls.
46.0788064122 -94.3359447967
5103671N 396702E; T130N R29W sec9
341 meters
1120 feet
Frequent on the exposed shores of small islands. Moist sand, pea-gravel, and small cobbles, ~4-10 inches above the water (exposed in the past few weeks by receding river levels). Full sun.