pParts of northern Arkansas were nearly completely underwater after a levee failure along the Black River led to severe flooding in the Pocahontas area on Wednesday, May 3.ppThis drone footage shows flooding near Portia, Hoxie and Black Rock, south of Pocahontas. Black Rock is about 16 miles from Pocahontasa and borders the Black River.pbr pThe National Weather Service in Memphis issued a Flash Flood Warninga on Wednesday, warning of flooding across Eastern Randolph and Lawrence counties due to the levee breach.