The Biden administration has begun the construction of levees along the border to fill gaps left open because of President Joe Biden’s order to halt work on former President Donald Trump’s border wall.

The administration will fill in holes in the levee system along a 13.4-mile stretch of the border in the Rio Grande Valley of Texas that were created as part of border wall construction in the area. Trump’s wall, which now runs along most of the stretch, included both a lower section consisting of levees to prevent flooding and an upper section of slatted metal wall to prevent migration. The Biden administration will be building out just the levee part in the areas where the wall was unfinished so that the entire 13.4 miles is interconnected, in response to residents’ fears about flooding.