水则亭为水则碑而建,亭在四明桥下,取适中之地,测量水势,镌“平”字于石上,城外诸楔闸视“平”出没为启闭,水没“平”字当泄,出“平”字当蓄,启闭适宜,民无旱涝之忧。因此,把四明桥改称平桥。水则亭为保庄稼丰稔、州郡平安发挥了重要作用。水则碑利用平水的原理达到体察灾情、民情统一调度的目的,是我国城市古水利遗存中仅有的实例。是研究水利发展史,研究城市排涝防洪水利工程不可多得的实物例证,有着特殊的意义。 Water Pavilion is built of water monument, pavilion in the Siming Bridge, take the right place, measuring the water potential, Juan “flat ” on the stone, the wedge outside the gate as “ , The water is not ”flat “ when the word leak, ”flat " when the word storage, opening and closing suitable, people without the fear of drought and flood. Therefore, the Siming Bridge renamed Ping Bridge. Water Pavilion to protect the abundance of crops, county safety played an important role. Shui Tomb uses the principle of flat water to understand the disaster situation, the purpose of the unified national conditions, is the ancient city of our country remains the only examples of water conservancy. It is a rare example of studying the history of water conservancy and studying the urban flood control and flood control water conservancy project, which has special significance.