Abstract: A revetment construction apparatus includes a reusable plunger device and a pair of panels coupled with a movable joint. The plunger includes a box portion having an open bottom and a plurality of sides, including an open front side, a rear side opposite the front side, and a pair of spaced apart lateral sides extending between the front and rear sides. The plunger further includes a mast portion extending vertically upward from the box portion and providing at a top end thereof a picking cap for engagement by a construction machine. The panels include front and bottom panels extending, respectively, along the front and open bottom of the box portion. Each of the panels is a reinforced anti-erosion fabric panel coupled to the box portion with breakaway fasteners configured to passively detach from the box portion upon lifting of the plunger after the box portion has been loaded with revetment foundation rock.