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刘家湾沟是三川河的一条支流,发源于中阳县张子山公社化林塔村,干流长40华里,在离石县刘家湾村注入三川河,流域面积47.1平方公里。这里属黄土丘陵沟壑区,其自然特点是梁峁起伏,沟壑纵横,支离破碎,植被稀少。沟壑密度每平方公里4.04公里,沟壑面积21.3平方公里,占总面积的45.2%,多为黄土和红土荒坡陡崖,沟底已下切至基岩,梁峁坡面积25.8平方公里,黄土覆盖,多开垦为耕地。
Liujiawan ditch is a tributary of the Sanchuan River. It originated in Lintai Village, Zhangzishan commune of Zhongyang County. The main stream is 40 kilometer long and is injected with Sanchuan River in Liujiawan Village, Lishi County. The drainage area is 47.1 square kilometers. Here is a loess hilly and gully region, its natural characteristics are Liang 峁 ups and downs, ravines aspect, fragmented, scarce vegetation. Gully density of 4.04 kilometers per square kilometer, gully area of 21.3 square kilometers, accounting for 45.2% of the total area, mostly loess and red clay cliffs, ditches have been cut to bedrock, beam slope slope area of 25.8 square kilometers, loess cover, More reclamation for arable land.