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2003年8月24日到9月20日,我省接连出现强降雨过程,渭河流域遭受了50多年来最为严重的洪水灾害。现就渭河下游今年5次洪水作以分析。一、“03”洪灾发生的主要原因1.潼关高程居高不下是造成本次洪灾的根本原因。自1960年三门峡水库投运以来,渭河下游淤积日益严重,至1998年已淤积
From August 24 to September 20, 2003, a series of heavy rainfalls occurred in our province, and the Weihe River Basin suffered the most serious flood disaster in more than 50 years. Now on the lower reaches of the Weihe five floods this year for analysis. I. The Main Causes of “03” Flood 1. The high elevation of Tongguan is the root cause of this flood. Since Sanmenxia Reservoir was put into operation in 1960, the sedimentation in the lower reaches of the Weihe River has become more and more serious, reaching to sediment in 1998