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  2. Watershed delineation - Wikipedia

    en.wikipedia.org/wiki/Watershed_delineation

    Watershed delineation is the process of identifying the boundary of a watershed, also referred to as a catchment, drainage basin, or river basin.It is an important step in many areas of environmental science, engineering, and management, for example to study flooding, aquatic habitat, or water pollution.

  3. Drainage basin - Wikipedia

    en.wikipedia.org/wiki/Drainage_basin

    Drainage basin of the Ohio River, part of the Mississippi River drainage basin. In hydrology, the drainage basin is a logical unit of focus [clarification needed] for studying the movement of water within the hydrological cycle. The process of finding a drainage boundary is referred to as watershed delineation. Finding the area and extent of a ...

  4. Watersheds of North America - Wikipedia

    en.wikipedia.org/wiki/Watersheds_of_North_America

    Watersheds of North America are large drainage basins which drain to separate oceans, seas, gulfs, or endorheic basins. There are six generally recognized hydrological continental divides which divide the continent into seven principal drainage basins spanning three oceans ( Arctic , Atlantic and Pacific ) and one endorheic basin.

  5. List of drainage basins by area - Wikipedia

    en.wikipedia.org/wiki/List_of_drainage_basins_by...

    The list of drainage basins by area identifies basins (also known as "catchments" or, in North American usage, "watersheds"), sorted by area, which drain to oceans, mediterranean seas, rivers, lakes and other water bodies. All basins larger than 400,000 km 2 (150,000 sq mi) are included as well as selected smaller basins. It includes drainage ...

  6. Eastern Continental Divide - Wikipedia

    en.wikipedia.org/wiki/Eastern_Continental_Divide

    The eastern drainage flows into the watersheds of the Susquehanna River, Potomac River, and James River, all of which flow into Chesapeake Bay before entering the Atlantic Ocean. At its northern terminus, the Eastern Continental Divide originates at Triple Divide Peak [ a ] in Ulysses Township, Pennsylvania , about 10 mi (16 km) south of the ...

  7. Drainage divide - Wikipedia

    en.wikipedia.org/wiki/Drainage_divide

    A drainage divide, water divide, ridgeline, [1] watershed, water parting or height of land is elevated terrain that separates neighboring drainage basins. On rugged land, the divide lies along topographical ridges , and may be in the form of a single range of hills or mountains , known as a dividing range .

  8. Hydrologic unit system (United States) - Wikipedia

    en.wikipedia.org/wiki/Hydrologic_unit_system...

    This map of United States water resource subregion hydrologic units updated boundaries to include the ocean as well as the portions of the basins that cross international borders For the use of hydrologists, ecologists, and water-resource managers in the study of surface water flows in the United States, the United States Geological Survey ...

  9. Main stem - Wikipedia

    en.wikipedia.org/wiki/Main_stem

    [clarification needed] Water enters the mainstem from the river's drainage basin, the land area through which the mainstem and its tributaries flow. [3] A drainage basin may also be referred to as a watershed or catchment. [3] Strahler diagram. Only a segment of the mainstem gets the highest number.