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1．雨情及灾情2005年7月29～31日,受副高外围西南气流控制和西风槽冷空气共同影响,新乡市普降中到大雨,部分地区降了暴雨和大暴雨,主要降雨区集中在新乡市东南部的天然文岩渠流域和金堤河流域,平均降雨量165mm,其中长垣县平均降雨278mm,封丘县平均降雨239mm。最大降雨量在长垣县丁栾镇,降雨达322．8mm。暴雨造成天然渠和文岩渠河高水位行洪。2005年7月31日8时,天然文岩渠大车集站水位64．83m(警戒水位64．91m),天然文岩渠同庄站水位72．72m,超过保证水位(72．38m)0．34m。据分析计算,此次降雨,长垣县达到50年一遇,封丘县达到20年一遇。
1. Rainstorm and Disasters In July 2005, from July 29 to July 31, affected by the control of the southwest airstream of the subtropical high and the cold air of the west wind channel, Xinxiang City plunged from moderate to heavy rain, heavy rains and torrential rains were dropped in some areas, and the main rainfall areas were concentrated in Xinxiang In the southeastern natural Wenyan drainage area and Jindi River basin, the average rainfall is 165mm, of which the average rainfall in Changyuan County is 278mm and the average rainfall in Fengqiu County is 239mm. The largest rainfall in Dingyuan County, Ding Luan, the rainfall of 322.8mm. Heavy rains caused floods in natural drains and high drains in Wenyan Canal. At 0800 on July 31, 2005, the water level of the natural Wenyanqu Dashuji Station was 64.83m (the warning water level was 64.91m), and the water level of the natural Wenyanqu Tongzhuang Station was 72.72m, exceeding the guaranteed water level (72.38m). .34m. According to the analysis and calculation, the rainfall, Changyuan County reached 50 years, Fengqiu County hit a 20-year event.