Steel-Fab designed and manufactured two new tractor/caterpillar gates for installation into the existing gate slots at the Buford Dam on Lake Lanier in Georgia. Each gate featured an integral jet flow gate designed to solve a long standing vibration problem during minimum flow releases.The tractor/caterpillar gates are supported along either side by an endless trains of rollers, and the gate seals by the rollers disengaging from support of the leaf when the gate is completely closed, allowing hydrostatic forces to seal the gate.