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. This statewide watershed coverage 12 digit huc was provided by the natural resources conservation service nrcs. Watersheds, hydrologic units, hydrologic unit codes. This nyc reservoirs watershed areas huc 12 gis layer was derived from the. This spatial layer shows the hydrologic unit boundaries for the 12 digit subwatersheds at a scale of 1.
This 12 digit hydrologic unit boundary meets the national standards for the spatial. 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. Nrcs huc basins 8, 10, 12 massachusetts document repository. Huc 4, huc 8, and huc 12 the watershed boundary dataset wbd maps the full areal extent of surface water drainage for the u. 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. Provides watershed boundary at the 8 digit huc level for the upper clinch. Efforts are ongoing to complete 10 and 12digit unit delineations within 8digit hydrologic units extending across the. This dataset is the digital hydrologic unit boundary layer for the 8digit.
Each unit was assigned a unique hydrologic unit code huc. This dataset is a digital hydrologic unit boundary layer that is at the subwatershed 12 digit level. The 14 and 16digit hydrologic units are optional and are not complete for the nation. This service is intended to be use by anyone who may need to show 12digit subwatershed on their maps. The hus are given a hydrologic unit code huc that ranges from 2 digits to 12 digits. Eight digit hydrologic unit code required a unique 8 digit code from the usgs map series hydrologic unit maps. Hydrologic unit codes huc are developed using a progressive twodigit system. Wbd huc 8, 10, 12 polygons and wbd lines are available on the gateway. Attachment 10 metro water district huc8, huc10, huc12. Federal codes and names and minnesota codes and names. Metro water district huc 8, huc10, huc 12 hierarchy river system major river basin huc. The same number was used in every record that pertains to a subwatershed that resides within the same 8 digit subbasin.
To download, go to arcgis open data set and click the download button, and. 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 dataset is complete for the united states to the 12 digit hydrologic unit. 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. Six easy steps to finding your 12digit hydrologic unit. Every hydrologic unit is identified by a unique huc consisting of 2 to 12 digits based on the levels of classification in the hydrologic unit system. Surface water data department of natural resources. These codes describe where the unit is in the country and the level of the unit. Zooming in will display watershed details and activate the pdf viewing and downloads. 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. The data set was developed by delineating the boundary lines on base maps or overlays and digitizing the delineated lines.
Click on the row to zoom into that watershed huc 12 huc 12 name. This version corrects some boundaries to be consistent with a new hydrography coverage based on 1. This polygon shapefile contains the 6th level, 12 digit hydrologic unit code huc subwatershed boundaries of california. The watershed boundary dataset wbd maps the full areal extent of surface water drainage for the u. The newest proper list of the huc 8digit, 10digit, and the 12digit. 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. Efforts are ongoing to complete 10 and 12 digit unit delineations within 8 digit hydrologic units extending across the u. It also makes some changes to be more consistent with a new 12 digit hydrologic unit coverage epa, 2009. The number of digits in a huc is related to 6 levels of detail for the wbd. A units huc is a concatenated number built using its own unique identifier plus all of that units parent hydrologic units codes.
Efforts are ongoing to complete 10 and 12 digit unit delineations within 8 digit hydrologic. A huc describes where the unit is in the country and the level of the unit. The 12 digit boundaries were dissolved to 8 digit boundaries to be used with the two tabular. Watersheds, hydrologic units, hydrologic unit codes, watershed approach, and rapid watershed assessments watershed. 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. Environmental protection agencys grants reporting and tracking system login page. Use choices below to search by address, xy longitude and latitude or by hydrologic unit name, code or number. For questions concerning these data contact mike hart atmike. 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. The nrcs assigned each delineated drainage basin a 14digit hydrologicunit code huc.
The layer also includes delineations at the watershed 10digit and subbasin 8 digit levels. The wbd contains the most current 8 digit, 10digit and 12 digit hucs and are available below. The nhd high resolution can be directly downloaded in shapefile or file geodatabase gdb format by hydrologic unit hu, state, or the entire nation. Click on the link below, which will take you to the u. Wbd provides a uniquely identified and uniform method of subdividing large. Enter a full or partial huc name or huc id huc 12 nameid. Polygons are attributed with hydrologic unit codes for 4th level subbasins, 5th level watersheds, 6th level subwatersheds, name, size, downstream.
Minnesota watershedhydrologic unit numbers and names. There are four main huc scales in north carolina which identify drainage areas. Data basin is a sciencebased mapping and analysis platform that supports learning, research, and. Author links open overlay panel lorne leonard christopher j. National hydrography dataset nhd direct download links.
Watershed boundaries, huc 10, for california sciencebase. Each hu is identified by a unique hydrologic unit code huc. The official nebraska department of natural resources nednr government website. Broxton rocks wetland and stream the broxton rocks mitigation bank is located in coffee and jeffdavis counties comprising 1,591 acres. Usa watershed boundary dataset huc 2, 4, 6, 8, 10, 12. 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. A geographic area of land, water and biota within the confines of a drainage divide. One click away from finding an 8, 10, or 12 digit hydrologic unit code. This dataset named the watershed boundary dataset further divides the huc levels to 5th and 6th levels. Watershed boundary dataset wbd 12digit subwatershed. In this example of an 8 digit hydrologic unit defined by the hydrology.
A hydrologic unit describes the area of land upstream from a specific point on the stream. Watershed modeling in a distributed computing environment. Available from nrcs wbd data download page select area of interest. Numbers were assigned in an upstream to downstream fashion. 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. Each basin is identified by a unique hydrologic unit code huc, as well a name, at each level. Guidance on the conversion of huc 11s14s to huc 10s12s. Watersheds are delineated by usgs using a nationwide system based on surface hydrologic features.
Number 12 digit huc last 4 digits of huc name 12 digit huc acres within indiana 051201100101 0101 mallott ditchsugar creek 10,068. Each contains features delineated at one of the three huc levels. Each basin is identified by a unique hydrologic unit code huc, as well a name, at each. This data set is a digital hydrologic unit boundary that is at the 4digit, 6digit, 8 digit, and 11digit level. Watershed boundary dataset wbd contains all of these nested levels of delineation, plus huc level 10 and huc level 12, in a single dataset. Hydrologic unit boundaries define the aerial extent of surface water drainage to a point. The larger the hydrological unit number, the smaller the watershed. Data basin is a sciencebased mapping and analysis platform that supports learning, research, and sustainable environmental stewardship. Subwatershed boundaries, california 12digit huc, 20. A hydrological code or hydrologic unit code is a sequence of numbers or letters that identify a. Appendix a2 8 and 12 digit hydrologic unit code huc. Data tables, services and downloads regional huc12 indicator data. Nj uses huc 11s and 14s boundaries not updated since 1986.
The 14digit hydrologic units huc14s in new jersey is a revision of the 2006 version of these units. Wsio indicator data tables containing all active wsio indicators are also available for download below. 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. Geological survey digitized these drainage divides. Download the nhdplus hr by 4digit hydrologic unit hu4 or by 8 digit hydrologic unit hu8 for alaska. Huc 4 is subregion, huc 6 is basin, huc 8 is subbasin, huc 10 is watershed, and huc 12 is subwatershed. Readme and draft metadata files are included in the zipped file. This dataset is the digital hydrologic unit boundary layer for the 8 digit. Watershed boundary dataset wbd overview history of hydrologic units and supporting documents. This nyc reservoirs watershed areas huc 12 gis layer was derived from the 12digit. The hydrologic units are arranged or nested within each other, from the. Any changes will be applied to the selected huc 12 selection list highlighted in fig. Subwatersheds are noted by a 14digit hydrologic unit huc.
The newest and most recent huc delineation efforts have been completed. Watershed boundary dataset wbd geospatial data gateway. A hydrologic unit is a drainage area delineated to nest in a multilevel, hierarchical drainage system. Automating datamodel workflows at a level 12 huc scale. Hydrologic units are given a hydrologic unit code huc.
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. Subbasin, 4, 8, 700, 2,200, imnaha river, 17060102. The huc basins are not the same as the deep basins on ct eco. Hydrologic units through four levels were created in the 1970s and have been used extensively throughout the united states.
Subregion 4 digit huc basin 6 digit huc subbasin 8 digit huc watershed 10 digit huc subwatershed 12 digit huc. Watersheds, nrcs, 1999 mngeo nrcsws99 also known as nrcs 11digit huc. The coverage is in arcview shapefile format and has been compressed with winzip. 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. Watershed boundaries define the aerial extent of surface water drainage to a point. Archives of huc 2 through 12 as national layers can be downloaded from here in the. Name assigned to each level 2,4,6, 8,10, and 12 of hydrologic unit.
This allows smaller watersheds to be identified within the larger watersheds. This data set is a complete digital hydrologic unit boundary layer to the subwatershed 12 digit 6th level for the entire united states. The data is delivered by subbasin and includes data for huc 8, huc10, and huc 12. Use this map to search for a hydrologic unit code huc of any area in north carolina.
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