一、南泉水河基本情况南泉水河是拒马河二级支流,属大清河水系,发源于房山区大石窝镇水头村北,自西北向东南流经大石窝镇和长沟镇,于长沟镇南出北京市界汇入北拒马河。南泉水河市内流域面积71.78 km~2,河道长度15.62 km。治理前河道宽度10~40 m,河道平均比降0.72%。水头泉和高庄泉泉水常年 First, the basic situation of Nanquan River Nanquan River is the second tributary of the Juma River, is the Qinghe River system, originated in Dashi Village, Fangshui Dushutu village north, from northwest to southeast flows through Dashiwo Town and Changgou, in the long Town South out of the Beijing municipal sector remitted to North Juma. Nanquan Shui River basin area of ​​71.78 km ~ 2, the river length of 15.62 km. The width of river channel before treatment is 10-40 m, and the average ratio of river channel is 0.72%. Spring water springs and springs Chuangquan perennial