Cao E, a native of the Eastern Han Dynasty, whose father, Cao Xu, was a warlock, often boated and sang in the river to welcome the gods. One day, Cao Xu rowed a boat up the river to see the tide god. Unexpectedly, something unexpected happened, and a storm suddenly blew on the river. The boat was overturned by a big wave, like a fallen leaf, and was immediately swallowed up by the river, and Cao Xu also fell into the river.
The bad news reached the Cao family. When Cao E heard the news that his father had fallen into the river, she ran to the river in tears, crying for his father and looking for him along the river.
In this way, one day, two days and three days passed, and Cao E searched and called day and night by the river, and the crying almost spread throughout the whole river. But I couldn't find it for three days in a row, and my father was still alive and dead. Cao E cried till her tears dried up. She didn't eat or sleep, and stayed on the shore day and night looking for her. People are very sympathetic to her and come to persuade her to take care of herself. Cao E told everyone that she would never give up unless she found her father.
After searching by the river for more than ten days and nights, Cao E knew that it was impossible to find her father at this rate, so she threw her clothes into the river and knelt on the shore and said to the river, "Father, if you are alive in heaven, please fulfill your daughter's filial piety and let this dress sink in your place!" 」
Strange to say, the clothes she threw floated far away with the river, and then sank after several turns in one place. Cao E quickly jumped down with the clothes sinking.
Five days later, the river became unusually calm. Someone vaguely saw two bodies floating on the river downstream. When they came closer, it turned out that Cao E was carrying her father. Although both father and daughter have lost their breath and their bodies are cold, Cao E still holds her father tightly and never relaxes.
Everyone present shed tears when they saw all this. They all said that Cao E's sincere filial piety touched Jiang Shen, enabling her to find her father's body underwater and send them to the surface. Deeply moved by Cao E's filial piety and feat, the local county magistrate ordered their father and daughter to be buried well, and set up a monument to record the deeds of Cao E, the filial daughter, for people to pay tribute to and cherish.
Cao 'e River, the largest tributary of Qiantang River, which flows alone in the East China Sea in China, is named after Cao 'e, a girl from the Eastern Han Dynasty, who saved her father from entering the river. The vicinity of Shengzhou is also called Tongxi, and Shangyu is also called Shangyu River. The vicinity of Guanbai was called Shunjiang in ancient times, and the downstream section was called Dongxiang in ancient times. ?
Cao 'e River originated in Changwu, Pan Da Mountains, and Wangcun, Shanghu Town, Pan 'an County. It flows from south to north through Xinchang County, Shengzhou City, Shangyu District and Keqiao District, and flows into Hangzhou Bay at the downstream of the new Sanjiangkou sluice in Shaoxing. The total length of the main stream is 193km (197.2km), and the drainage area is 5099. 15km2 (6080km2). The upstream is above Shengzhou Chengguan, the midstream is from Shengzhou Chengguan to Guanbai, and the downstream is below Guanbai.
Cao 'e River is the last important tributary flowing into Qiantang River, and most rivers are important industrial and agricultural water sources in coastal areas, including Xiapu sluice and other water diversion projects. The downstream shipping capacity is strong, among which Cao 'ejiang Port is an important port. The estuary is greatly affected by tides. In order to prevent moisture (flood control) and control waterlogging, the famous Caoejiang sluice project was built.
Cao 'e River basin is one of the rivers with the largest sediment concentration and serious flood disaster in Zhejiang Province. The annual erosion modulus in the upper reaches is 400 tons/km2, which is one of the highest in the whole province. Especially in Xinchang, the upstream, the average modulus of soil erosion for many years is as high as 500 tons per square kilometer, ranking first in the province.
The middle reaches are also above 200 tons/square kilometer. According to the observation of Dongshabu Hydrological Station for 25 years, the average sediment concentration for many years is 0.2927 kg/m3, and the average sediment transport for many years is 663,700 tons. The sediment brought by the downstream tide is deposited below Guanbai, and ships with a tonnage of more than1985 are no longer navigable. The average erosion modulus of Shuangjiangxi Station in Caoejiang River for many years is 298. ?
Soil erosion not only reduces soil fertility in mountainous areas, but also silts reservoirs and rivers, weakening the function of reservoir water storage and flood detention and the navigation capacity of rivers. 1990, motor boats can only be traced back to Sanjie, and the navigation mileage of the main stream is only 10 1 km. Soil erosion has also brought a lot of yellow sand resources, making Cao 'e River an important yellow sand producing area in the province, with an annual output of about 2 million tons.
The upstream source of Cao 'e irrigation main stream is short and urgent, the forest is seriously damaged, the natural water storage capacity is weakened, and the fan-shaped terrain has the function of collecting flood peaks. In case of heavy rain, mountain torrents pour; The middle reaches of the river bend and are held by Qingfeng Gorge, and the flood discharge is not smooth; The downstream estuary is silted, the river channel is supported by tides, and the flood discharge is not smooth. Therefore, frequent floods have become one of the four major disasters in Zhejiang Province.