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  2. Eastern Continental Divide - Wikipedia

    en.wikipedia.org/wiki/Eastern_Continental_Divide

    The divide's central portion generally follows the easternmost ridge of the Blue Ridge Mountains and thus of the Appalachian Mountains as a whole, which takes the form of a high escarpment. In this portion, the western drainage of the divide flows into the watersheds of the New River and Tennessee River, both tributaries of the Ohio River.

  3. Environment of Virginia - Wikipedia

    en.wikipedia.org/wiki/Environment_of_Virginia

    Virginia has a total area of 42,774.2 square miles (110,784.67 km 2), including 3,180.13 square miles (8,236.5 km 2) of water, making it the 35th-largest state by area. [1] Forests cover 65% of the state, wetlands and water cover 6% of the land in the state, while 5% of the state is a mixture of commercial, residential, and transitional.

  4. Upper Occoquan Sewage Authority - Wikipedia

    en.wikipedia.org/wiki/Upper_Occoquan_Sewage...

    The Occoquan Reservoir is a component in a water supply system that currently serves over 1.4 million residents of Northern Virginia. During the suburban expansion of the Northern Virginia region in the 1960s, the reservoir’s water quality degraded, resulting in:

  5. List of gaps of Virginia - Wikipedia

    en.wikipedia.org/wiki/List_of_gaps_of_Virginia

    This list of Virginia Blue Ridge gaps is listed starting from north to south.. Potomac Water Gap, elevation 240 feet, Harpers Ferry, on U.S. Route 340; Keyes Gap, originally Vestal's Gap, elevation 895 feet, on Virginia State Route 9 in Loudoun County

  6. List of ecoregions in North America (CEC) - Wikipedia

    en.wikipedia.org/wiki/List_of_ecoregions_in...

    The classification system has four levels. Only the first three levels are shown on this list. "Level I" divides North America into 15 broad ecoregions. "Level II" subdivides the continent into 52 smaller ecoregions. "Level III" subdivides those regions again into 182 ecoregions. [1] [2] "Level IV" is a further subdivision of Level III ...

  7. Piedmont region of Virginia - Wikipedia

    en.wikipedia.org/wiki/Piedmont_region_of_Virginia

    The Virginia Piedmont is largely characterized by rolling hills and numerous ridges near the boundary with the Blue Ridge Mountains. Lying between the mountain and coastal plain regions, the Piedmont region is a naturally diverse landscape. [2] The bedrock consists mostly of gneiss, schist, and granite rocks at a typical depth of between 2 and ...

  8. Blue Ridge Mountains - Wikipedia

    en.wikipedia.org/wiki/Blue_Ridge_Mountains

    Blue Ridge Mountains - Front Royal, Virginia Although the term "Blue Ridge" is sometimes applied exclusively to the eastern edge or front range of the Appalachian Mountains, the geological definition of the Blue Ridge province extends westward to the Ridge and Valley area, encompassing the Great Smoky Mountains, the Great Balsams, the Roans, the Blacks, and other mountain ranges.

  9. Gaps of the Allegheny - Wikipedia

    en.wikipedia.org/wiki/Gaps_of_the_Allegheny

    These low water gaps of the Allegheny are located in an arc in the depression between higher barrier ridge-lines, a family or succession of half-mountain passes letting out in a similar series of water courses, albeit rising more gradually from the west, where the depressed upland was caused by the weight of the immense plateau glacier that ...