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  2. Ohio water resource region - Wikipedia

    en.wikipedia.org/wiki/Ohio_Water_Resource_Region

    The Ohio water resource region is one of 21 major geographic areas, or regions, in the first level of classification used by the United States Geological Survey to divide and sub-divide the United States into successively smaller hydrologic units. These geographic areas contain either the drainage area of a major river, or the combined drainage ...

  3. List of most-polluted rivers - Wikipedia

    en.wikipedia.org/wiki/List_of_most-polluted_rivers

    Many biologically dead zones, with pollution almost wiping out traditional occupations along the river and its wetlands, including fishing and farming. [65] Ravi River India, Pakistan: Regarded in 2022 studies as the most contaminated river globally, with pharmaceutical residues such as paracetamol, nicotine, caffeine, and medications for ...

  4. 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.

  5. List of Superfund sites in Ohio - Wikipedia

    en.wikipedia.org/.../List_of_Superfund_sites_in_Ohio

    This is a list of Superfund sites in Ohio designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) environmental law.The CERCLA federal law of 1980 authorized the United States Environmental Protection Agency (EPA) to create a list of polluted locations requiring a long-term response to clean up hazardous material contaminations. [1]

  6. Ohio River - Wikipedia

    en.wikipedia.org/wiki/Ohio_River

    The Ohio River at Cairo is 281,500 cu ft/s (7,960 m 3 /s); [1] and the Mississippi River at Thebes, Illinois, which is upstream of the confluence, is 208,200 cu ft/s (5,897 m 3 /s). [66] The Ohio River flow is greater than that of the Mississippi River, so hydrologically the Ohio River is the main stream of the river system.

  7. List of locks and dams of the Ohio River - Wikipedia

    en.wikipedia.org/wiki/List_of_locks_and_dams_of...

    This is a list of locks and dams of the Ohio River, which begins at the confluence of the Allegheny and Monongahela rivers at The Point in Pittsburgh, Pennsylvania and ends at the confluence of the Ohio River and the Mississippi River, in Cairo, Illinois. A map and diagram of U.S. Army Corps of Engineers operated locks and dams on the Ohio River.

  8. Portage Lakes - Wikipedia

    en.wikipedia.org/wiki/Portage_Lakes

    Some water from the lakes reaches Lake Erie and some flows to the Ohio River. [ 2 ] There is an unincorporated community named Portage Lakes in Summit County , near 41°00′26″N 081°31′37″W  /  41.00722°N 81.52694°W  / 41.00722; -81.52694 Elevation: 1,053 feet (321 m), [ 3 ] in the

  9. List of river basins in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_river_basins_in...

    1. Pacific Northwest Basin; 2. California River Basin; 3. Great Basin; 4. Lower Colorado River Basin; 5. Upper Colorado River Basin; 6. Rio Grande River Basin

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