20230608 16122600 1.0 TRUE Ditch Blocks A ditch block is a barrier, or weir, that is placed in a ditch. A ditch block allows water to flow through the ditch only after the water has reached a certain level. Usually this level is set as the bottom of a slot cut into the block. The shape of the slot can vary. Ditch blocks restrict flow through a ditch for flow management and water treatment (quality) purposes. The original municipal separated storm sewer system (MS4) inventory (1997-2007); upon which this dataset has its foundation, was funded by the City of Jacksonville and the Florida Department of Transportation District II.