Sea level is considered to be at 0 feet. Everything is measured in relation to being above or below sea level.
It is 781 feet above sea level.
Baltimore is 33 feet above sea level.
It is 2.389 feet above sea level.
617 feet above sea level.
80 feet above sea level )
Toronto is 380 feet above sea level.
Baltimore is 33 feet above sea level
594 feet above sea level.
it is 12,600 feet below sea level.
It is 863 feet above sea level.
It is 295 feet above sea level.
Part is at sea level. Highest point is about 18 feet above sea level.