Page "Union County, Arkansas" Paragraph 4

According to the 2000 census, the county has a total area of, of which ( or 98. 45 %) is land and ( or 1. 55 %) is water.

Union County, along with Columbia County, has the largest bromine reserve in the United States.

The lowest point in the state of Arkansas is located on the Ouachita River in Union County and Ashley County, where it flows out of Arkansas and into Louisiana.