/kloc-in the winter of 0/950, dredging and regulation works were carried out on the rivers from Gao Tai to Yiwan and from Sunwan to Manjukou within the territory of Ruhe Pingyu. 195 1 winter solstice 1952 completed the river dredging and tertiary flood diversion project from Wuhe to Sanchakou in spring. A total of 40,000 migrant workers were mobilized in the two projects, and 5.576 million cubic meters of earthwork was completed, which improved the water capacity of the river below the river pier. However, the flood disaster along Ruhe River is still very serious because the backbone river has not been thoroughly treated and the downstream Dahong River has been propped up. 1965 The lower reaches of the Ruhe River flooded 380,000 mu.
From the winter solstice of 1969 to the spring of 1972, the Ruhe River was comprehensively treated in three stages according to the standards of three-year waterlogging control and 10 year flood control. All bends are cut straight, which shortens the old river channel with a length of 163.7km to 82. 1, which opens up a channel for upstream flood and tributary drainage and reduces flood disasters. The project is planned and designed by Zhumadian Water Conservancy Bureau, and the regional Ruhe River Regulation Project Headquarters organizes the construction. A total of 380,000 migrant workers were mobilized and 62.94 million cubic meters of earth and stone were completed. 54 flood control and drainage gates and 3 highway bridges and traffic bridges have been completed, with a total investment of 28510.23 million yuan. Regulation of Beiru River
From 65438 to 0950, suiping county began to control Wang Kui and Nanliuyan River. 1952, Wusong Lake flood storage area is built between the north and south rivers in Ada. At the same time, Xiping County dredged the North Ada River and Xianren Pool. 1954 The estuary from Honghe to Beiru River is blocked, and the main streams of Beiru River and South Ada River are sorted out. At the end of 1950s, a number of small and medium-sized reservoirs, such as Xiasong Reservoir, were built in the upper reaches of Wang Kui, which improved the flood control and drainage conditions in Beiru River basin.
From 65438 to 0964, the comprehensive management plan of Beiru River Basin was implemented. In that year, Xinyang Special Zone established the Beiru River Regulation Project Headquarters, organized Xiping, Suiping, Shangcai and Runan counties to participate, and completed the first phase of the construction task of straightening the main channel of Beiru River. Later, the leaders of Zhumadian District completed other projects, and 1969 ended in the spring.
Lianjiang management
1956, runan county built drainage gates on both sides of Lianjiang River. 1965, flood control began downstream. 1976 Dredged embankment. It has reached the standard of flood control once every five years and once every 20 years.
Zhugang governance
After 1972 ~ 1973 treatment, the waterlogging elimination standard of once every five years is reached.
Deepwater river regulation
There were many ponds in Shenshui River basin in ancient times, which were beneficial to irrigation, but the low-lying areas were prone to waterlogging, and disasters were more likely to occur when the downstream was supported by Ruhe River. 1966 to 1972, dredging in tributary rivers, building seven reservoirs and dams in the upper and middle reaches of the main stream, achieving both pest control and profit promotion, and basically controlling flood disasters, backward irrigation and roof support problems in Ruhe River.
Huangdagang governance
1972 and 1977 are processed twice. For the first time, according to the standard of drainage once every three years, the middle reaches of the river have been treated emphatically, and preliminary benefits have been achieved. The second time is governed by the standard of five years. After treatment, the maximum drainage capacity is increased from 25 m3/s to 1.57 m3/s, and the benefit is very remarkable. The state subsidized 400,000 yuan twice to complete 3.238 million cubic meters of earthwork.