A water supply launder reducing imbalance of the flow amounts of the ore slurry and the additive water on the upper surface of the shaking table, and producing flow throughout the upper surface of the shaking table.The water supply launder included in a table gravity concentrator 1 to supply water to a table 2 of the table gravity concentrator 1 includes a launder body 20 which receives water supplied from a water supply unit 23 to an upper surface 21a of the launder body 20, and supplies the water to the table 2 of the table gravity concentrator 1, and a distribution member 30 which is attached to a lower surface 21b of the launder body 20, and contacts water dropping from the upper surface 21a of the launder body 20 and flowing to the table 2 of the table gravity concentrator 1 to distribute the water.