PROBLEM TO BE SOLVED: To provide a water supply device which enables water to be smoothly supplied without recessing the ground at time of opening a water supply valve, or leveling farm products.SOLUTION: The water supply device comprises: a water supply pipe 7 in which pressured water is introduced a bottomed and cylindrically shaped measuring container 40 in which the water supply pipe 7 penetrates and is connected through a bottom part 42 and an edge 7b of downstream side of the water supply pipe 7 is disposed therein and a water supply valve 4 provided to the edge 7b of the downstream side of the water supply pipe 7. It is preferable that the measuring container 40 is configured to have width size which gets wider from a bottom end 40b to an upper end 40a.COPYRIGHT: (C)2015,JPO&INPIT【課題】給水バルブの開栓時に地面を陥没させる、或いは作物をなぎ倒すことなく、用水を円滑に供給可能とする給水装置を提供する。【解決手段】加圧された用水が導入された給水パイプ7と、底部42に給水パイプ7が貫通して接続され、内部に給水パイプ7の下流側の先端7bが配置されている有底筒状の貯水マス40と、給水パイプ7の下流側の先端7bに設けられた給水バルブ4と、を備えている。貯水マス40の幅寸法は、底端40bから上端40aに向かうにつれて大とされていることが好ましい。【選択図】図1