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  2. Geography of Florida - Wikipedia

    en.wikipedia.org/wiki/Geography_of_Florida

    At 345 feet (105 m) above mean sea level, Britton Hill in northern Walton County is the highest point in Florida and the lowest known highpoint of any U.S. state. [3] Much of the state south of Orlando is low-lying and fairly level; however, some places, such as Clearwater, feature vistas that rise 50 to 100 feet (15 to 30 m) above the water.

  3. Great Lakes - Wikipedia

    en.wikipedia.org/wiki/Great_Lakes

    A map of the Great Lakes Basin showing the five sub-basins. Left to right they are: Superior (magenta); Michigan (cyan); Huron (green); Erie (yellow); Ontario (red). Though the five lakes lie in separate basins, they form a single, naturally interconnected body of fresh water, within the Great Lakes Basin. As a chain of lakes and rivers, they ...

  4. North American Vertical Datum of 1988 - Wikipedia

    en.wikipedia.org/wiki/North_American_Vertical...

    It superseded the National Geodetic Vertical Datum of 1929 (NGVD 29), [2] previously known as the Sea Level Datum of 1929.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.

  5. Sea levels are starting to rise faster. Here’s how much South ...

    www.aol.com/sea-levels-starting-rise-faster...

    The one big unknown in South Florida’s future of sea level rise is likely the water rushing offshore. The Gulf Stream, a massive current that moves hot water from the tropics to the frigid ...

  6. Lake Okeechobee - Wikipedia

    en.wikipedia.org/wiki/Lake_Okeechobee

    Lake Okeechobee (US: / oʊ k i ˈ tʃ oʊ b i / oh-kee-CHOH-bee) [1] is the largest freshwater lake in the U.S. state of Florida. [2] It is the eighth-largest natural freshwater lake among the 50 states of the United States and the second-largest natural freshwater lake contained entirely within the contiguous 48 states, after Lake Michigan.

  7. Sea levels are rising, but is South Florida also sinking ...

    www.aol.com/sea-levels-rising-south-florida...

    In South Florida, sea levels have already risen several inches since the start of the century and could be around six feet higher by 2100. But another factor could be making those sunny day floods ...

  8. How sea rise could reshape South Florida neighborhoods ... - AOL

    www.aol.com/sea-rise-could-reshape-south...

    This map suggests the places in Miami-Dade County that could see population growth (in red) or decline (in blue) over the next few decades as sea level-rise induced flooding begins to affect ...

  9. National Geodetic Vertical Datum of 1929 - Wikipedia

    en.wikipedia.org/wiki/National_Geodetic_Vertical...

    NGVD29 was superseded by the North American Vertical Datum of 1988 , [3] based upon reference to a single benchmark (referenced to the new International Great Lakes Datum of 1985 local mean sea level height value), although many cities and U.S. Army Corps of Engineers "legacy" projects with established data continued to use the older datum. [4]