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拒马河发源于涞源盆地,途经保定市的涞源县、易县、涞水县和北京市的房山区,再进入涞水县铁锁崖,而后分为南、北拒马河。拒马河全长200km,流域面积约5000km~2,均为山区河道,无控制工程。“7·21”特大暴雨主要降落在拒马河流域,日均降雨量213mm,发生了自1964年以来最大洪水。1,“7·21”拒马河流域洪灾及成因“7·21”暴雨洪水波及拒马河流域61个乡镇、901个村庄,受灾人口达42万人,农作物受灾面积39万亩,倒损房屋63490间,交通、电力、通信、水利等基础设施损毁严重,直接经济损失94亿元。因灾死亡32人,失踪16人。拒马
Juma River originated in the source basin, via Baoding Baoyuan County, Yi County, Laishui County and Beijing’s Fangshan District, then enter the Huangshui County Tieya Cliff, and then divided into South and North Juma. Juma River full-length 200km, drainage area of about 5000km ~ 2, are mountain river, no control project. The heavy rain mainly landed in the Juma River basin, with an average daily rainfall of 213 mm and the largest flood since 1964. 1. July 21 Floods and Causes in the Juma River Basin 7.12 Storm floods affected 901 villages and 61 townships and towns in the Juma River Basin with a population of 420,000 affected and a crop area affected by the crops of 390,000 Mu of houses and 63,490 houses were damaged, causing serious damage to infrastructure such as transportation, electricity, communications and water conservancy, with a direct economic loss of 9.4 billion yuan. 32 people were killed in the disaster and 16 were missing. Juma