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The larger portion of the terrain consists of hills often rising to a height of 800 feet (240 m) above tide water. [25] The highest elevation is approximately 960 feet (290 m) above sea level at Maryland's state border with Pennsylvania near Steltz. The lowest elevation is sea level along the shoreline of Chesapeake Bay.
Baltimore's elevation ranges from sea level at the harbor to 480 feet (150 m) in the northwest corner near Pimlico. [ 6 ] In the 2010 census, Baltimore has a total area of 92.1 square miles (239 km 2 ), of which 80.9 sq mi (210 km 2 ) is land and 11.1 sq mi (29 km 2 ) is water. [ 100 ]
This list of the highest cities in the world includes only cities with a population greater than 100,000 inhabitants and an average height above sea level over 2,000 metres (6,600 ft). This list is incomplete ; you can help by adding missing items .
ASL – above sea level [4] FAMSL – feet above mean sea level [5] FASL – feet above sea level [6] MAMSL – metres above mean sea level [5] MASL – metres above sea level [5] [6] MSL – mean sea level [7] For elevations or altitudes, often just the abbreviation MSL is used, e.g., Mount Everest (8849 m MSL), or the reference to sea level ...
Since the Sea Level Datum of 1929 was a hybrid model, it was not a pure model of mean sea level, the geoid, or any other equipotential surface. Therefore, it was renamed the National Geodetic Vertical Datum of 1929 (NGVD 29) May 10, 1973, by the National Geodetic Survey , a part of the National Oceanic and Atmospheric Administration .
It superseded the National Geodetic Vertical Datum of 1929 (NGVD 29), [2] previously known as the Sea Level Datum of 1929. NAVD 88, along with North American Datum of 1983 (NAD 83), is set to be replaced in 2025 with a new geometric reference frame and geopotential datum, based on GPS and gravimetric geoid models.
Population density and elevation above sea level around the Chesapeake Bay. The Chesapeake Bay is especially vulnerable to sea level rise. The Chesapeake Bay is already experiencing the effects of climate change. Key among these is sea level rise: water levels in the bay have already risen one foot, with a predicted increase of 1.3 to 5.2 feet ...
Topographic maps display elevation above ground and are complementary to bathymetric charts. Bathymetric charts showcase depth using a series of lines and points at equal intervals, called depth contours or isobaths (a type of contour line). A closed shape with increasingly smaller shapes inside of it can indicate an ocean trench or a seamount ...