黄冈地区地处长江中游,雨量充沛,多年平均降雨量为1,275毫米。水库多以灌溉、发电为主,因而水的用量和交换量都大,增加了鱼类外逃的机会。输水管多年来所采用的拦鱼设施是铁栅和拦网,由于拦栅栅距的选择不当和铁栅的锈蚀问题没有解决好,拦鱼效果不太理想。鉴于这种情况,梅川水库于1974 Huanggang area is located in the middle reaches of the Yangtze River, rainfall is abundant, the average annual rainfall is 1,275 mm. More reservoirs to irrigation, power generation, and therefore the amount of water and exchange are large, increasing the chance of fish fleeing. The aqueduct that has been used for many years is a barricade and a barricade. Due to the improper selection of barrack distance and corrosion of the barricade, the effect of barring fish is not very satisfactory. In view of this situation, Meichuan Reservoir in 1974