Since the 1950's, the federal government has worked with the states bordering the river to build 19 dam-canal structures that control most flooding on the Ohio.
(the federal government; has worked; with the states; T:Since the 1950's) (the states; bordering; the river to build 19 dam-canal structures) (19 dam-canal structures; control; most flooding)
the federal government the states 19 dam-canal structures
has worked bordering control
with the states T:Since the 1950's
the river to build 19 dam-canal structures
most flooding