Recent rain in the area has increased water levels in the Savannah River, and in doing so has dislodged a barge and moved it near the Stevens Creek Dam.  I’ve always heard this structure referred to as a weir, not a dam. For reference the weir crosses the Savannah river just below(south) of Stevens Creek. Stevens Creek is upstream of the weir, several hundred yards on the right(South Carolinas side of the Savannah River). Stevens Creek feeds into the Savannah River. There is another weir a mile or so downstream that also crosses the Savannah River at the Savannah Pavilion (located on the Georgia side of the Savannah River). .  No damage to the barges or dam.  They let the water flow slow down a little, moved the platform back, and went back to work.  No big deal really but it made for a good news story.  Those are Shugart barges and they are not typical barges.  They are designed to support their load while floating or as a ground supported "mud mat" and they do not need to be fully supported to carry the load on the top.  That 4 barge arrangement will support 150 tons so this is a very small load for the platform and the little bit of weight over the edge of the dam isn't a problem.  There are two spuds holding the work platform in place.  My guess is that the reservoir bottom was just too soft and the increased water flow caused them to drag until they found the dam's foundation.  Those are the two red spudwells on the upstream corners.  The spuds are all the way down with lifting eyes on the tops of the spuds barely visible.  Great video mate would of been awesome to see if you caught it dislodging completely