Search results
Results From The WOW.Com Content Network
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).
This is a list of countries and territories by their average elevation above sea level based on the data published by Central Intelligence Agency, [1] unless another source is cited. The list includes sovereign states and self-governing dependent territories based upon the ISO standard ISO 3166-1.
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]
Lake Erie on May 28, 2022, taken from the International Space Station Partial map of the Lake Erie Islands Lake Erie (42.2° N, 81.2W) has a mean elevation of 571 feet (174 m) [ 8 ] above sea level. It has a surface area of 9,990 square miles (25,874 km 2 ) [ 7 ] with a length of 241 statute miles (388 km ; 209 nmi ) [ 7 ] and breadth of 57 ...
Tunnel datum is a datum based on an ordnance datum and used in designing tunnels which pass below sea level. for the London Underground, a tunnel datum of ODN −100 m is used; [7] thus a depth of −60 m AOD is 40 m ATD (above tunnel datum) for the Channel Tunnel, a tunnel datum of ODN −200 m is used; [8] thus a depth of −60 m is 140 m ATD
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).