PROBLEM TO BE SOLVED: To provide a water level adjustment device for adjusting a water level by installing the same to a drain port of a paddy field.SOLUTION: Guide grooves 6 and 6 extending in the vertical direction are provided on inner side faces 5 and 5 of both side slab parts 3 and 3 of a catch basin 1 a lower plate 8 and a water level adjustment plate 9 are attached to the guide grooves 6 and 6 the lower end of the lower plate 8 is in contact with a bottom slab part 2 of the catch basin 1 the water level adjustment plate 9 is fixed at a predetermined level from the bottom slab part 2 and on the water level adjustment plate 9, a triangle opening 15 is formed.COPYRIGHT: (C)2016,JPO&INPIT【課題】 水田の排水口に設置して水位を調整する為の水位調整装置の提供。【解決手段】 排水枡1の両側版部3,3の内側面5,5には上下方向に延びるガイド溝6,6を設け、このガイド溝6,6に下部板8と水位調整板9を取付け、該下部板8の下端は排水枡1の底版部2に接し、水位調整板9は底版部2から所定の高さに固定し、そして水位調整板9には三角形開口15を形成している。【選択図】 図2
