Northern Mojave–Mono Lake water resource subregion

Northern Mojave–Mono Lake water resource subregion (HUC 1809) is one of 10 water resource subregions within the California water resource region and is one of 222 water resource subregions in the federally organized United States hydrologic unit system.

There are two water resource basin subdivisions of the Northern Mojave–Mono Lake subregion (HUC 1809)

The tiers of the classification system, in order from largest to smallest, are regions, subregions, water resource basin|basins (formerly accounting units), subbasins (formerly cataloging units), watersheds, and subwatersheds. These geographic areas contain either the drainage area of a major river, or the combined drainage areas of a group of rivers.[1][2]

Hierarchy of United States hydrological units c. 1984

The Northern Mojave–Mono Lake subregion is approximately 28,000 sq mi (73,000 km2) and includes closed desert basins that discharge into south-central California, including Mono Lake, Owens Lake, Death Valley, and the Upper Mojave Desert. [3] The Northern Mojave–Mono Lake subregion is composed of two third-level hydrological units called water resource basins (formerly accounting units), each with its own 6-digit hydrologic unit code. These two basins are further subdivided into a total of 11 water resource subbasins, each with its own 8-unit hydrologic code.

List of Northern Mojave–Mono Lake subregion basins
Basin HUC[4] Basin name[4] Basin description Basin location[4] Basin size[4] Basin map
180901 Mono–Owens Lakes basin Mono Lake and Owens Lake closed basins[5] 4,310 sq mi (11,200 km2)
HUC180901
HUC180901
180902 Northern Mojave basin Closed desert basins that discharge into south-central California, including Death Valley and the Upper Mojave Desert, excluding Mono Lake and Owens Lake[6] 23,600 sq mi (61,000 km2)
HUC180902
HUC180902

See also

References
  1. "Science in Your Watershed - Locate Your Watershed". USGS. Retrieved 2016-10-12.Public Domain This article incorporates text from this source, which is in the public domain.
  2. "Hydrologic Unit Maps". USGS. Retrieved 2016-10-12. Public Domain This article incorporates text from this source, which is in the public domain.
  3. "USGS Water Resources: About USGS Water Resources". water.usgs.gov. Retrieved 2023-03-18.
  4. McManamay RA, Bevelhimer MS, Kao SC, Yaxing W, Martinez-Gonzalez M, Samu N (2013). "National Hydropower Asset Assessment Environmental Attribution". USGS-Oak Ridge National Laboratory. Retrieved 2016-10-12. Public Domain This article incorporates text from this source, which is in the public domain.
  5. Codes for the identification of hydrologic units in the United States (PDF). National Institute of Standards. pp. A109–A110.
  6. Codes for the identification of hydrologic units in the United States (PDF). National Institute of Standards. pp. A109–A110.
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