Is Tianjin near the sea?

Tianjin is close to the sea, and Tianjin straddles both sides of Haihe River, the largest river in North China. There are more than 300 tributaries with an upstream length of 10 km, which meet the North Canal, Yongding River, Daqing River, Ziya River and South Canal near the middle reaches. Five rivers join the Haihe River at the fork near Tianjin Jingang Bridge and enter the sea from Dagukou. The main stream is 72 kilometers long, with an average river width of 100 meter and a water depth of 3-5 meters. Historically, this river was navigable for 3000 tons of seagoing ships.

The geological structure of Tianjin is complex, and most of it is covered by Cenozoic sediments. The terrain is dominated by plains and depressions, with low mountains and hills in the north, and the altitude gradually decreases from north to south. The highest in the north, with an altitude of1052m; The lowest in the southeast, 3.5 meters above sea level. The highest peak in the city: Jiushan Peak (elevation1078.5m). The general outline of the landform is high in the northwest and low in the southeast.

Tianjin has three kinds of topography: mountains, hills and plains, with plains accounting for about 93%. Except the mountainous area bordering the southern foot of Yanshan Mountain in the north, the rest are alluvial plains, and the mountainous area in the north of Jixian County is a low mountain and hill below 1000 meters above sea level. Near the mountain is an inclined plain composed of alluvial fans, which is fan-shaped The southern part of the inclined plain is alluvial plain, and the southeastern part is coastal plain.