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陕北靖边、定边两县的芦河、红柳河及八里河的上游,约有2908.8平方公里的梁峁沟壑涧地区(山涧区)。其中有农耕地约75.9万亩,涧农地32.5万亩,占总农地的43%,涧地中有水漫地20.3万亩,占总农地的26.8%,占涧农地的62.6%。利用洪水漫涧地,可以有效地拦蓄径流,防止洪水对涧地的破坏,并可大幅度的提高农作物产量(可提高0.5～3倍,一般1倍左右)。引洪漫地已有百余年的历史,特别是合作化后,为合理引洪漫地创造了条件。
There are about 2908.8 square kilometers of Lianggou Gully Gully Area (Shanjian Area) in the upper reaches of the Lo River, Hongliu River and Bali River in Jingbian and Dingbian Counties in northern Shaanxi. Among them, there are 759,000 mu of arable land, 325,000 mu of farmland, accounting for 43% of the total farm land, 203,000 mu of water and flood land, accounting for 26.8% of the total farm land and 62.6% . The use of floods, can effectively intercept runoff to prevent flood damage to the stream, and can greatly improve crop yields (can be increased 0.5 to 3 times, usually about 1 times). Citing floods have been more than a hundred years of history, especially after the co-operation, in order to reasonably cited Hong created the conditions.