20 ft.
Just about zero. It's a flat island, a few metres above mean sea level.
We call this "elevation".
Vellore is located at an average elevation of approximately 216 meters (709 feet) above sea level.
Karachi is at an average elevation of 8 meters (26 feet) above sea level.
Aprox. 27 feet above sea level
It is 561 feet above sea level.
7,500 ft above sea level
It is 930 meters above sea level.
cochin is below sea level
== == Science Major: Altitude is height above mean sea level (MSL) or true altitude, which means in reference to what sea level is on the ground, or height above ground level (AGL), which is also called absolute altitude, which means height above the ground with no reference to the ground's height above sea level. In example, if the sea level in a certain place is 100 feet and you are 250 feet above the ground, your altitude above sea level would be 350 feet, and your altitude above ground level would be 250 feet.
Mexico City is 2200 meters above sea level.
Ohio has a varied elevation across the state. The highest point is Campbell Hill at 1,549 feet above sea level, while the lowest point is the Ohio River at about 455 feet above sea level.