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  2. Hydrologic unit system (United States) - Wikipedia

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

    The 10-digit watersheds were delineated to be between 40,000 and 250,000 acres in size, and the 12-digit subwatersheds between 10,000 and 40,000 acres. [5] In addition to the hydrologic unit codes, each hydrologic unit was assigned a name corresponding to the unit's principal hydrologic feature or to a cultural or political feature within the ...

  3. Hydrological code - Wikipedia

    en.wikipedia.org/wiki/Hydrological_code

    A hydrological code or hydrologic unit code is a sequence of numbers or letters (a geocode) that identify a hydrological unit or feature, such as a river, river reach, lake, or area like a drainage basin (also called watershed in North America) or catchment.

  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 Great Basin watersheds - Wikipedia

    en.wikipedia.org/wiki/List_of_Great_Basin_watersheds

    Map of the Great Basin. The Great Basin is the largest region of contiguous endorheic drainage basins in North America, and is encompassed by the Great Basin Divide.This is a list of the drainage basins in the Great Basin that are over 500 sq mi (1,300 km 2), listed by the state containing most of the basin.

  6. Minnehaha Creek Watershed District - Wikipedia

    en.wikipedia.org/wiki/Minnehaha_Creek_Watershed...

    The Minnehaha Creek Watershed District is a watershed district in Minnesota with a mission to collaborate with public and private partners to protect and improve land and water for current and future generations. [1]

  7. Subwatershed - Wikipedia

    en.wikipedia.org/?title=Subwatershed&redirect=no

    From Wikipedia, the free encyclopedia. Redirect page

  8. Military Grid Reference System - Wikipedia

    en.wikipedia.org/wiki/Military_Grid_Reference_System

    The intersection of a UTM zone and a latitude band is (normally) a 6° × 8° polygon called a grid zone, whose designation in MGRS is formed by the zone number (one or two digits – the number for zones 1 to 9 is just a single digit, according to the example in DMA TM 8358.1, Section 3-2, [1] Figure 7), followed by the latitude band letter ...

  9. Geospatial PDF - Wikipedia

    en.wikipedia.org/wiki/Geospatial_PDF

    The PDF format is widely accepted and is considered the de facto standard for printable documents on the web. This means that users do not require the any proprietary plug-in to read geospatial PDFs created following the PDF 1.7 specification, which was published as ISO 32000-1 standard. [3]