Dye test on Missouri River tracks contaminant flow across 41 miles in Montana

Scientists carried out a dye-tracing study on Montana's Missouri River to understand how substances travel through the waterway. The dye plume was tracked over 41.2 miles, revealing varying speeds across different river sections and reservoirs. Researchers recorded an 8.2-hour delay as the dye moved through the system. The experiment also measured how the plume dispersed along the river's course. Findings from the study will help authorities better predict contaminant movement and respond to accidental chemical spills.