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The Hydrologic Instrumentation Facility (HIF) has four sections within its organizational structure; [35] the Field Services Section which includes the warehouse, repair shop, and Engineering Unit; the Testing Section which includes the Hydraulic Laboratory, testing chambers, and Water Quality Laboratory; the Information Technology Section ...
Infographic explaining the hierarchy of the United States hydrologic unit system. Originally a four-tier system divided into regions, sub-regions, accounting units, and cataloging units, each unit was assigned a unique Hydrologic Unit Code (HUC). As first implemented the system had 21 regions, 221 subregions, 378 accounting units, and 2,264 ...
The Ventura–San Gabriel Coastal water resource basin is a third-level subdivision of the United States hydrologic unit system. [ 1 ] The Ventura–San Gabriel Coastal basin is approximately 4,530 sq mi (11,700 km 2 ; 2,900,000-acre) and extends from Rincon Creek on the north to the San Gabriel Basin on the south. [ 2 ]
The South Coast Hydrologic Subregion is composed of three third-level hydrological units. The federally-defined Southern California Coastal water resource subregion equates roughly with the state-designated South Coast hydrologic region. Per a USGS report of 1976, "Water deficiency is prevalent in the South Coastal subregion."
This modification - supplied by the USGS Hydrologic Instrumentation Facility - is available in two sizes: the original 3" and the recently added 6". [28] Kilpatrick notes that the discharge for this modification of the Parshall flume is slightly greater than for a standard Parshall flume of the same size. [29]
[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.
The first version of SDI-12 was released in 1988. It was designed by a coalition which included the U.S. Geological Survey's Hydrologic Instrumentation Facility (HIF) and a group of private companies. [2] The SDI-12 Specification is maintained by a non-profit corporation called the SDI-12 Support Group.
A water resource region is 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 as part of the U.S. hydrologic unit system. This first level of classification divides the United States into 21 major geographic areas, or regions.