USGS to Sample Air at Winnewissa Falls for Contaminant Study

From roughly August 9 to August 14, 2026, the U.S. Geological Survey, in partnership with the National Park Service, will set up air sampling stations around Winnewissa Falls at Pipestone National Monument. The effort is part of a joint study aimed at identifying contaminants in Pipestone Creek and evaluating any associated public health concerns. Hunters using the area should stay informed about water quality updates, as the findings could affect the safety of drinking water and the overall health of wildlife in the region.