This data set is a digital hydrologic unit boundary that is at the 4digit, 6digit, 8 digit, and 11digit level. There are four main huc scales in north carolina which identify drainage areas. The official nebraska department of natural resources nednr government website. Subwatershed boundaries, california 12digit huc, 20. Watersheds are delineated by usgs using a nationwide system based on surface hydrologic features. Usgs hydrologic unit code huc basins region subregion accounting unit cataloging unit huc number lake superior w lake superior sw lake superior badmontreal 04010302 s lake superior s central lake superior blackpresque isle 04020101 ontonagon 04020102 keweenaw peninsula 04020103 sturgeon 04020104 deadkelsey 04020105. Watershed boundary dataset wbd overview history of hydrologic units and supporting documents.
Broxton rocks wetland and stream the broxton rocks mitigation bank is located in coffee and jeffdavis counties comprising 1,591 acres. The wbd contains the most current 8 digit, 10digit and 12 digit hucs and are available below. Each basin is identified by a unique hydrologic unit code huc, as well a name, at each. The huc basins are not the same as the deep basins on ct eco. Watershed boundary dataset wbd 12digit subwatershed. For questions concerning these data contact mike hart atmike. Eight digit hydrologic unit code required a unique 8 digit code from the usgs map series hydrologic unit maps. Data tables, services and downloads regional huc12 indicator data. Numbers were assigned in an upstream to downstream fashion.
The newest and most recent huc delineation efforts have been completed. Each hu is identified by a unique hydrologic unit code huc. The hydrologic units are arranged or nested within each other, from the. Available from nrcs wbd data download page select area of interest. One click away from finding an 8, 10, or 12 digit hydrologic unit code.
The 14digit hydrologic units huc14s in new jersey is a revision of the 2006 version of these units. Watershed modeling in a distributed computing environment. Provides watershed boundary at the 8 digit huc level for the upper clinch. This dataset named the watershed boundary dataset further divides the huc levels to 5th and 6th levels.
The data set was developed by delineating the boundary lines on base maps or overlays and digitizing the delineated lines. The coverage is in arcview shapefile format and has been compressed with winzip. The intent of defining hydrologic units hu for the watershed boundary dataset is to establish a baseline drainage boundary framework, accounting for all land and surface areas. Data basin is a sciencebased mapping and analysis platform that supports learning, research, and. Data basin is a sciencebased mapping and analysis platform that supports learning, research, and sustainable environmental stewardship. This dataset is the digital hydrologic unit boundary layer for the 8 digit. This 12 digit hydrologic unit boundary meets the national standards for the spatial. Watershed boundary dataset wbd geospatial data gateway.
Geological survey digitized these drainage divides. Archives of huc 2 through 12 as national layers can be downloaded from here in the. Each contains features delineated at one of the three huc levels. Hydrologic units through four levels were created in the 1970s and have been used extensively throughout the united states. Watershed boundary dataset wbd contains all of these nested levels of delineation, plus huc level 10 and huc level 12, in a single dataset. Federal codes and names and minnesota codes and names. The number of digits in a huc is related to 6 levels of detail for the wbd. Usa watershed boundary dataset huc 2, 4, 6, 8, 10, 12. The watershed boundary dataset wbd maps the full areal extent of surface water drainage for the u. This data set is a complete digital hydrologic unit boundary layer to the subwatershed 12 digit 6th level for the entire united states. The dataset is complete for the united states to the 12 digit hydrologic unit.
Wsio indicator data tables containing all active wsio indicators are also available for download below. Six easy steps to finding your 12digit hydrologic unit. Subwatersheds are noted by a 14digit hydrologic unit huc. Subbasin, 4, 8, 700, 2,200, imnaha river, 17060102. The same number was used in every record that pertains to a subwatershed that resides within the same 8 digit subbasin. Wbd huc 8, 10, 12 polygons and wbd lines are available on the gateway. The 12 digit boundaries were dissolved to 8 digit boundaries to be used with the two tabular. National hydrography dataset nhd direct download links. This layer consists of georeferenced digital data and associated attributes created in accordance with the usgs national map accuracy standards and the nrcs federal standards for delineation of hydrologic unit boundaries, 100104. Name assigned to each level 2,4,6, 8,10, and 12 of hydrologic unit. This version corrects some boundaries to be consistent with a new hydrography coverage based on 1. Zooming in will display watershed details and activate the pdf viewing and downloads.
To comply with federal standards, njdep met with epa region 3 to delineate 6th level level huc 12 subhuc 12 subwatershed boundaries in nj using 2002 stream data 1. Watershed boundaries define the aerial extent of surface water drainage to a point. Any changes will be applied to the selected huc 12 selection list highlighted in fig. Use choices below to search by address, xy longitude and latitude or by hydrologic unit name, code or number. Watersheds, nrcs, 1999 mngeo nrcsws99 also known as nrcs 11digit huc. This dataset is the digital hydrologic unit boundary layer for the 8digit. This polygon shapefile contains the 6th level, 12 digit hydrologic unit code huc subwatershed boundaries of california. All new planning proposals requesting funding for watershed management plan wmp development must be for 8, 10, or 12 digit hydrologic unit code huc areas the units that represent subbasin, watershed, and subwatershed areas, respectively. Click on the link below, which will take you to the u. A hydrological code or hydrologic unit code is a sequence of numbers or letters that identify a. A huc describes where the unit is in the country and the level of the unit. Link to usgs 8 digit hydrologic units and dnr major watersheds link to usgs 6digit hydrologic units and minnesota equivalents link to usgs 4digit hydrologic units and minnesota equivalents. Number 12 digit huc last 4 digits of huc name 12 digit huc acres within indiana 051201100101 0101 mallott ditchsugar creek 10,068. Each basin is identified by a unique hydrologic unit code huc, as well a name, at each level.
Wbd provides a uniquely identified and uniform method of subdividing large. The numeric huc identifiers reflect this nesting as well. A hydrologic unit is a drainage area delineated to nest in a multilevel, hierarchical drainage system. Efforts are ongoing to complete 10 and 12 digit unit delineations within 8 digit hydrologic units extending across the u. The newest proper list of the huc 8digit, 10digit, and the 12digit. These codes describe where the unit is in the country and the level of the unit. Attachment 10 metro water district huc8, huc10, huc12. The hus are given a hydrologic unit code huc that ranges from 2 digits to 12 digits. This nyc reservoirs watershed areas huc 12 gis layer was derived from the. Use this map to search for a hydrologic unit code huc of any area in north carolina. For example, a huc 8 or eightdigit hydrologic unit watershed can be comprised of a number of huc10 watersheds, which in turn are defined by any number of huc 12 watersheds. The nhd high resolution can be directly downloaded in shapefile or file geodatabase gdb format by hydrologic unit hu, state, or the entire nation. Hydrologic unit boundaries define the aerial extent of surface water drainage to a point.
Readme and draft metadata files are included in the zipped file. Huc 4 is subregion, huc 6 is basin, huc 8 is subbasin, huc 10 is watershed, and huc 12 is subwatershed. This data set, part of the watershed boundary data set wbd, is a complete digital hydrologic unit boundary layer to the subwatershed 12 digit 6th level in and around the state of indiana. Surface water data department of natural resources. One route for users to obtain watershed indicator data from wsio is through creating and downloading a custom wsio tool with userselected data for their area of interest. Hydrologic units are subdivided progressively smaller units and each unit of measurement has a hydrologic unit code huc which describes the level of subdivision and the geographic location of the hydrologic unit.
This spatial layer shows the hydrologic unit boundaries for the 12 digit subwatersheds at a scale of 1. Watershed boundaries, huc 10, for california sciencebase. In this example of an 8 digit hydrologic unit defined by the hydrology. Efforts are ongoing to complete 10 and 12digit unit delineations within 8digit hydrologic units extending across the. The data is delivered by subbasin and includes data for huc 8, huc10, and huc 12. The larger the hydrological unit number, the smaller the watershed. Nj uses huc 11s and 14s boundaries not updated since 1986. A hydrologic unit describes the area of land upstream from a specific point on the stream. This system divides the country into 21 regions 2digit, 222 subregions 4digit, 370 basins 6digit, 2,270 subbasins 8 digit, 20,000 watersheds 10digit, and 100,000 subwatersheds 12 digit. The nrcs assigned each delineated drainage basin a 14digit hydrologicunit code huc.
Minnesota watershedhydrologic unit numbers and names. Efforts are ongoing to complete 10 and 12 digit unit delineations within 8 digit hydrologic. Appendix a2 8 and 12 digit hydrologic unit code huc. Automating datamodel workflows at a level 12 huc scale. The layer also includes delineations at the watershed 10digit and subbasin 8 digit levels. A geographic area of land, water and biota within the confines of a drainage divide. The 14 and 16digit hydrologic units are optional and are not complete for the nation. The deliverable includes attributes for hydrologic unit codes, hydrologic unit name, downstream hydrologic unit, manmade modifications to overland flow that alter the location of the hu boundary, and hu type for each hydrologic unit level 16. Huc 4, huc 8, and huc 12 the watershed boundary dataset wbd maps the full areal extent of surface water drainage for the u. This nyc reservoirs watershed areas huc 12 gis layer was derived from the 12digit. A hydrological code or hydrologic unit code is a sequence of numbers or letters that identify a hydrological feature like a river, river reach, lake, or area like a drainage basin also called watershed in north america or catchment one system, developed by strahler, known as the strahler stream order, ranks streams based on a hierarchy of tributaries. This dataset is a digital hydrologic unit boundary layer that is at the subwatershed 12 digit level. Each unit was assigned a unique hydrologic unit code huc.
Hydrologic units are given a hydrologic unit code huc. To download, go to arcgis open data set and click the download button, and. Author links open overlay panel lorne leonard christopher j. Hydrologic unit codes huc are developed using a progressive twodigit system. Click on the row to zoom into that watershed huc 12 huc 12 name.
Download the nhdplus hr by 4digit hydrologic unit hu4 or by 8 digit hydrologic unit hu8 for alaska. This data set consists of georeferenced digital data and associated attributes and is a preliminary release of the 12 digit hydrologic unit oklahoma watershed boundary dataset, part of the national watershed. Watersheds, hydrologic units, hydrologic unit codes, watershed approach, and rapid watershed assessments watershed. Polygons are attributed with hydrologic unit codes for 4th level subbasins, 5th level watersheds, 6th level subwatersheds, name, size, downstream. Enter a full or partial huc name or huc id huc 12 nameid. It also makes some changes to be more consistent with a new 12 digit hydrologic unit coverage epa, 2009. Metro water district huc 8, huc10, huc 12 hierarchy river system major river basin huc. Environmental protection agencys grants reporting and tracking system login page. This allows smaller watersheds to be identified within the larger watersheds. A units huc is a concatenated number built using its own unique identifier plus all of that units parent hydrologic units codes. This statewide watershed coverage 12 digit huc was provided by the natural resources conservation service nrcs. Watersheds, hydrologic units, hydrologic unit codes.
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