What is the altitude of Poyang County in Jiangxi Province?

Poyang County is located in the northeast of Jiangxi Province, on the east bank of Poyang Lake, between east longitude 1 16 23' 45 "-north latitude17 06'15" north latitude 28 46' 26 "-29 42' 03. Bordering pengze county and dongzhi county in the north; It borders yugan county and Wannian County in the south; It is adjacent to Changjiang District, Fuliang County and leping city in Jingdezhen City in the east; The northwest is connected with the mountains and rivers of duchang county; It is 7 1.8km wide from east to west and 90.2km long from north to south, with a total area of 42 15km2.

Extended data:

Elevation is usually calculated based on the average sea level, which refers to the vertical distance above sea level somewhere on the ground. The starting point of altitude is called altitude zero or leveling zero, which is the average sea level of a coastal location. It is obtained by averaging the position of the sea surface according to the records of local tide gauge stations for many years.

Before liberation, the altitude zero in China was very inconsistent; After liberation, starting from 1956, Qingdao zero was used as the leveling zero for calculating elevation in all localities. So the altitude we calculated is based on the Yellow Sea in Qingdao as zero.

Baidu Encyclopedia-Poyang County

Baidu encyclopedia-altitude