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Elevation or altitude is generally expressed as "metres above mean sea level" in the metric system, or "feet above mean sea level" in United States customary and imperial units. Common abbreviations in English are: AMSL – above mean sea level [3] ASL – above sea level [4] FAMSL – feet above mean sea level [5] FASL – feet above sea level [6]
The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic datum § Vertical datum).
However, most of the village's population lives near sea level. The village of Umatac is also at a high elevation. 3750 feet (1143 m) Volcano Hawaii: 6290 feet (1917 m) Island Park Idaho [17] 994 feet (303 m) Stockton Illinois: 1211 feet (369 m) Bethel Indiana [18] 1598 feet (487 m) Allendorf Iowa [18]
Enlargeable map of the 50 U.S. states by mean elevation. This list includes the topographic elevations of each of the 50 U.S. states, ... sea level: NA 57 280 ft
The Ebright Azimuth is the point with the highest benchmark monument elevation in the U.S. state of Delaware. It is marked with a geodetic benchmark monument and has an elevation of 447.85 feet (136.50 m) above sea level. The only state high-point with a lower elevation is Britton Hill in the state of Florida at 345 feet (105 m) above sea level.
Sylmar gently slopes upward as a geological alluvial plain and alluvial fan from an elevation of slightly more than 1,100 feet (340 m) above sea level near San Fernando Road to slightly more than 1,700 feet (520 m) above sea level at the crest of Hubbard Street. The overall range of elevation in Sylmar is approximately 600 feet (180 m).
When its islands are included, the lake's shoreline is 712 miles (1,146 km) long. As the last lake in the Great Lakes' hydrologic chain, Lake Ontario has the lowest mean surface elevation of the lakes at 243 feet (74 m) [6] above sea level; 326 feet (99 m) lower than its neighbor
Aviation altitude is measured using either mean sea level (MSL) or local ground level (above ground level, or AGL) as the reference datum. Pressure altitude divided by 100 feet (30 m) is the flight level , and is used above the transition altitude (18,000 feet (5,500 m) in the US, but may be as low as 3,000 feet (910 m) in other jurisdictions).