Hydrological characteristics of Li Shui, how to read Li Shui The meaning of Li Shui

The altitude of the upper reaches of Lishui is about 2000 meters, the mountain is high and steep, the rainfall is abundant, the runoff above Dayong is more than 1000 mm, and the Liangshuikou is more than 1500 mm, which is the crown of the province, and the downstream runoff is about 600 mm deep. The runoff of Lishui mainly comes from the upstream and main tributaries of freshwater, and the runoff modulus is larger than that of Hunan, Zishui and Yuanshui. The total annual average runoff was 15.1 billion cubic meters (1951-1980), the average annual flood season water from May to October was 11.2 billion cubic meters, and in 1954, the maximum annual runoff was 26.4 billion cubic meters. The minimum total runoff in 1957 was 100 million cubic meters.

In 1935, according to the hydrological department's estimation according to the flood traces, the maximum flow reached 30,300 cubic meters per second, and the maximum flow after the founding of the People's Republic of China was August 2, 1980, and the Sanjiangkou station in Shimen County was measured to be 17,500 cubic meters per second. On January 23, 1977, the minimum flow rate was cubic meters per second.

The maximum flow measured at the Shimen Hydrological Station of the Lishui Control Station over the years was 19,900 cubic meters per second (July 23, 1998), and the minimum flow was cubic meters per second (January 14, 1992), with an average annual runoff of about 16.5 billion cubic meters. The difference between the water level of the dry water in winter and the high flood level in the flood season is quite large, the difference between the flood and dry water level of Shimen station is about 18 meters, and the difference between Jinshi station is more than 11 meters. The water level generally starts to rise from April, and high floods often occur from May to August, and generally there are 3 to j times of larger flood peaks in a year, and the most in 1980, the flood peaks overlap, as many as 7 times.

The lowest water level occurs in December or month, and the lowest water level often occurs in December. Due to the sediment accumulation in the river channel or the support of the Jingjiang River, the water level of the flood peak changes greatly and increases year by year. In 1954, the catastrophic flood caused the highest water levels in history in the lower reaches of Lishui and in all parts of the tailgating area.

In the flood season of April and August, the water level rises and falls sharply, the flood peak lasts for a short period and the dry period is long. The water level varies by 10 to 15 meters, which has the characteristics of a mountain stream. The average specific drop of the river channel. Lishui is a river with extremely serious flood disasters, and its two major tributaries are located in the center of the largest Hefeng and Wufeng rainstorms in the Yangtze River Basin, and the average flood occurs once a year.

In the 305 years from 1644 to 1949, there were 103 large and small floods in the Lishui Basin. After the founding of the People's Republic of China, there were five major floods in the Lishui basin in 1950, 1954, 1980, 1991 and 1998. Among them, in 1935, the catastrophic flood inundated 980,000 mu of cultivated land, and 10,000 people died along the river.

According to the "Lishui Basin Planning Report" approved by the State Development Planning Commission in 1992, Lishui is the smallest river in the Yangtze River system, but it is the river with the most serious flood disasters.

I remember seeing a saying a few years ago that Lishui is the river with the largest slope in the country.

Explanation of Lishui The tributaries of the middle reaches of the Yangtze River belong to the Dongting Lake or water system. It originates in the north of Sangzhi County and flows through the northwest of Hunan Province. It is 388 kilometers long. Navigable.

Word decomposition Explanation of 澧 澧 ǐ 澧水 水名, in Hunan Province, China. radical : 氵; Explanation of water 水 ǐ a colorless, odorless, transparent liquid:

Rice. Drop stone wears. The water is impassable.

River: Han Shui. Xiangshui.

River: A common name for lakes and seas. Reservoir. Water conservancy sells laughter.

It comes naturally (metaphorically, when the conditions are ripe, things will be completed smoothly). Water can carry boats. Cross mountains and seas.

Surrounded by mountains and rivers. Liquid: Pen. Ink.

Da'an Township, Longshan County, Hunan Province. The Lishui (lǐ) water originates from Wudaoshui, Sangzhi County, Hunan Province, the main stream of Lishui is 407 kilometers long, Shimen to Xiaodukou is called the lower reaches of Lishui, the territory of Lixian is 32 kilometers long, and there are 325 tributaries of more than 5 kilometers long in Lishui, of which the first-class tributaries with a larger area include the southern source of Lishui, the north source of Lishui, the water of Lishui, the water of Weishui, the river of Daoshui and other rivers. <

Da'an Township, Longshan County, Hunan Province. The main stream of Lishui is 407 kilometers long, and the downstream of Lishui is called Lishui from Shimen to Xiaodukou, and the territory of Lishui County is 32 kilometers long. There are 325 tributaries with a length of more than 5 kilometers in Lishui, among which the first-class tributaries with a large area include the southern source of Lishui, the northern source of Lishui, the rivers of Lishui, Weishui, and Daoshui.

The main stream of Lishui flows through counties and cities: Longshan County of Hunan Province, Xuanen County of Hubei Province, Sangzhi County, Yongshun County of Hunan Province, Yongding District of Zhangjiajie City, Cili County, Shimen County, Linli County, Li County, Jinshi City, and joins Dongting Lake at Xiaodukou of Lixian County.

Governance development. The theoretical reserves of water energy resources in the main tributaries of Lishui are about 10,000 kilowatts, and the developable hydropower resources are 10,000 kilowatts. Control projects such as the Lishui Basin (Lishui) and the Sooshi Water Conservancy Hub (Weishui) have been completed, and the Yichongqiao Water Conservancy Hub on the main stream of Lishui is also being built.

1. 澧水pinyin: [lǐ shuǐ].

2. Shi Bi Sun Yi: Located in Hunan Province, it originates from the river in the mountains at the junction of Hunan and Hubei provinces. On the west side of Shi Jianran Gate, it meets with the Xushui River and flows into Dongting Lake in Anxiang, with a total length of about 240 kilometers.

3. Li, the name of the water, in Hunan Province, China. Li River, the name of the river, is in Henan Province, China. "Liezi Tangwen" and other relevant records are recorded; Li River, a river that originates and flows through Xingtai City, the ancient name is Li Shui, "Water Jing Note" says:

Zhu water out of the Changshan Zhongqiu, east into the river, to Ren Heli".

The average runoff of the Lishui Basin is 100 million cubic meters, and the basin area is 18,496 square kilometers, of which 15,736 square kilometers are in Hunan. Most of the basin receives 1,600 mm of annual precipitation. The total annual runoff (Sanjiangkou Station) is 100 million cubic meters.

There are 325 tributaries with a length of more than 5 kilometers in Lishui, of which there are 8 major tributaries such as Lishui, Weishui and Daoshui, which are collectively called Jiuli. The main stream of Lishui flows through counties and cities: Longshan County of Hunan Province, Xuan'en County of Hubei Province, Sangzhi County, Yongshun County, Yongding District of Zhangjiajie City, Cili County, Shimen County, Linli County, Li County, Jinshi City of Hujiajie Province, with a total length of 407 kilometers and a total length of 96 kilometers from Weilu Xiaodu to Dongshan Luting Lake.