Why did Huixian County suffer from floods in 2016?

In 2016, Huixian suffered from flooding due to continuous and heavy rainstorms.

Since the early morning of July 19, 2016, Xinxiang City has experienced heavy to heavy rain. As of 17:00, the city's average rainfall was 98.3 mm. The heavy rainstorms were mainly distributed in Shayao Township, Shangbali Town and Bobi Town in Huixian City. The maximum rainfall site was in Nanping, Shayao Township, reaching 457.5 mm.

Affected by this heavy rainfall, the Shimen Reservoir in Huixian City received a large amount of water, and flood discharge began at 10 a.m. At 17:00, the flood discharge flow of Shimen Reservoir was still 400 cubic meters/second. At the same time, according to a report from the Provincial Prevention Office, due to heavy rainfall in upstream Shanxi, the water level in the river rose rapidly. The peak flow of Wujiawan River, a first-level tributary of Weihe River in Shanxi, was 500 cubic meters/second at 10:30 a.m. (entering Baoquan Reservoir) in the afternoon. The overflow started at 3:45. At 5 o'clock, the measured inflow flow was 1061 cubic meters/second and the discharge flow was 498 cubic meters/second.