The Xi he River demonstration district

as an ecological project of soil and water conservation in the Yellow River basin

is located in the third sub-area of hilly gully area on the Loess Plateau.Its topogra-phy is typical of numerous valleys and gullies

where gully erosion is one of the main erosion processes. Con-struction of check dam is an important engineering measure for gully management in the region. In practice

many regional experiences of check dam construction have been developed

such as small reservoir capacity with high dam

high standard against flood

huge invest

and single form of construction. In planning

some technical methods-single dam dominated

relaxing technical indexes moderately

arranging main projects reasonably

and increasing standard against flood moderately-have been popularly used. Check dam plays an important role in promoting social economic development in the area.