The total scenic area is 49 square kilometers, and the lake area is 6.38 square kilometers. The geographic coordinates of the center are 3014' 45 "north latitude and 0/20 8' 30" east longitude.
It is surrounded by mountains in the west, south and north, adjacent to the urban area in the east and across the Qiantang River in the south. Bai Causeway, Su Causeway, Yang Gongdi and Zhao Gong dikes in the lake divide the lake into several water surfaces, and there are three islands in the lake. The mountains of the West Lake are centered on the West Lake, divided into four levels from near to far, and the elevation rises from 50 meters to 400 meters in turn, forming a "stacked mountain" landscape.
The West Lake is connected with the first grade mountain, and the distances from the latter three grades are 1650m, 3450m and 5600m respectively. Looking at the mountain scenery in the lake, the elevation angle is within 5.
Introduction of hydrological characteristics of West Lake;
The catchment area of the West Lake is 2 1.22 square kilometers, the annual runoff of the basin is1.4000 cubic meters, the storage capacity is close to1.4000 cubic meters, and the natural alternation of water is 654.38+0 times/year. The outline of the West Lake is nearly oval, and the bottom of the lake is relatively flat. The natural surface water sources of the lake are Jinsha River, Longhong River, Chishan River (Yin Hui) and Changqiao River. The water level of the lake is maintained at 7. 15m and the elevation of the Yellow Sea is 0.05m, with the highest water level of 7.70m and the lowest water level of 6.92m, with a difference of 50cm.
The storage capacity is about14.294 million cubic meters. The average water depth of the lake is 2.27 meters, the deepest is about 5 meters and the shallowest is less than 1 meter. The average annual precipitation in the lake is 5.629 million cubic meters. The scouring coefficient of water system is 1.49. When the gate is closed in the dry season, the flow velocity is equal to 0, even in the flood season, the general flow velocity is only below 0.05 m/s ... The West Lake takes water from Qiantang River, which is about 65.438+0.2 billion cubic meters per year.
Reference to the above content: Baidu Encyclopedia-West Lake