Sedimentation problem in water Conservancy in China

Journal Article · Sat Dec 01 04:00:00 EST 1984 · Water Int.; (United States)

DOI:https://doi.org/10.1080/02508068408686534· OSTI ID:6191829

Wu, D

The state-of-the-art of river sedimentation management in China is reviewed. Attention is focused on the sediment load carried by main rivers in China; the related sediment problems encountered in developing water resources; and the methods in dealing with those problems. There are 50 rivers with annual maximum sediment load exceeding 10 million tons in China. There are more than 400,000 sq km of loess plateaus and hills in the drainage basin of the Yellow River. Inadequate conservation of soil and water leads to erosion, transportation and deposition of sediment, giving rise to much trouble in water conservation works. These problems include flood control, navigational concerns, reservoir sedimentation, and sediment problems of lowhead diversion dams or hydroelectric projects. Methods for dealing with sediment problems include water and soil conservation and use of turbid water with emphasis on terracing, strip cropping, forestation, grass and crop rotation. Several types of structures may be built along a gully such as small reservoirs, check dams, drop structures, drainage ditches, and irrigation canal systems for diverting hyperconcentrated flow into farmland or to warp land. Processes for diverting water while preventing sediment from entering water intakes at hydroelectric plants are becoming more advanced. 4 references, 3 figures, 2 tables.

• Research Organization: Institute of Water conservancy and Hydroelectric Power Research, Beijing, China
• OSTI ID: 6191829
• Journal Information: Water Int.; (United States), Journal Name: Water Int.; (United States) Vol. 9:4; ISSN WAINE
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
130100* -- Hydro Energy-- Resources & Availability
ASIA
CHINA
EROSION
RESOURCE CONSERVATION
RESOURCES
RIVERS
SEDIMENTATION
SEDIMENTS
SOILS
STREAMS
SURFACE WATERS
WATER RESOURCES