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聂家河小流域坝系建设以原有骨干工程为基础,共建设各种坝21座。坝系工程于2004年全部竣工并通过验收。为掌握坝系效益,2006—2010年对流域坝系进行了监测,监测结果显示:小流域坝系可以有效控制水土流失,减少入黄泥沙,生态效益明显;有效地拦蓄了降水资源,为农业灌溉提供了水源,经济效益明显;为发展壮大流域多种经营提供了水源保证,保护了退耕还林(草)成果,社会效益明显。根据监测结果,对小流域坝系的建设提出了一些建议。
The construction of dam system in Niajiahe Small Watershed is based on the existing backbone projects and 21 dams are built in all. Dam system project completed in 2004 and passed the inspection. In order to grasp the benefit of the dam system, the dam system of the river basin was monitored from 2006 to 2010. The monitoring results showed that the dam system in the small river basin could effectively control soil erosion and reduce the sediment into the yellow with obvious ecological benefits. It effectively saved precipitation resources as Agricultural irrigation provides water and has obvious economic benefits. It provides a water source guarantee for the diversification of the development and expansion of the river basin and protects the achievements of returning farmland to forests and grasslands. The social benefits are obvious. Based on the monitoring results, some suggestions are put forward for the construction of dam system in small watershed.