Sea level is the reference, zero height.
approximately 250 ft
Dallas, Texas is 430 feet above sea level
19 ft above sea level
Lying about 250 m (820 ft) below sea level in the Jordan Valley, Jericho has a subtropical climate.
The DC area elevation ranges from 0 ft (sea level) to 409 ft above sea level.
70 feet below sea level.
1043 ft above sea level
sea level= 0 ft above sea level.
Our camp was at 4000 ft above sea level.
The distance from the bottom of the valley that is 248 ft below sea level to the top of the mountain that is 8867 ft above sea level is 9115 ft.
14.7 psi = sea level. 15.2 psi = 1671 ft below sea level
+28000 FT