This wave of rainfall in Kaohsiung has increased the flow of Gaoping River by 50%.

(Photo by reporter Chen Wenchan)

[Reporter Chen Wenchan/Kaohsiung Report] This wave of rainfall in Kaohsiung City has helped the water situation, driving the flow of Gaoping River to increase by about 50%, and the flow of Qishan River by about 30%. million cubic meters, increasing the water storage rate of Nanhua Reservoir to over 80%.

Kaohsiung needs about 1.2 million tons of daily water for people's livelihood. It relies on taking water from Gaoping River, and there is no large-scale reservoir to store water. It shares Nanhua Reservoir with Tainan. This year's rainfall is less than half of the average in the past 30 years. The flow of Qishan Stream is low.

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Kaohsiung has been affected by the front since the 17th, which has brought rainfall to the Kaohsiung Mountains for several days. Coupled with the large catchment area of ​​the Gaoping River, the flow of the weir of the Gaoping River has increased from 14.5 cubic meters per second to a maximum of 21.4 cubic kilometers per second. Chi, the overall flow has increased by about 50%, which is the fifth lowest in the same period since the weir was established 23 years ago.

The Seventh District Management Office of the Water Company draws water from the Gaoping River every day to supply Kaohsiung’s people’s livelihood, and at the same time makes clean water from the Gaoping River. Through the tap water branch network, the north supplies 200,000 tons of water for Tainan’s livelihood every day, stabilizing the south Taiwan water.

In addition, the flow rate of Jiaxian Weir in Qishan Creek increased from 2.7 cubic meters per second to a maximum of 3.7 cubic meters per second, which was the eighth lowest in the same period of the past years, and the overall flow rate increased by about 30%.

The Water Resources Bureau of the Southern District of the Water Resources Department has expanded the amount of cross-border water diversion to a total of 415,000 cubic meters, increasing the Nanhua Reservoir to 81.87%, and controlling the daily water output of 340,000 cubic meters to reduce the water output of the Nanhua Reservoir.

The water conservancy unit said that this wave of rainfall has helped the overall water situation. Not only has the flow of the Gaoping Stream increased, it has increased the flow into the Nanhua Reservoir, and it has also helped to conserve groundwater and underground water. Irrigation water volume.