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12592100
20230322
16365200
bndMetaTemplate
66549.085200
80101.590200
2573504.233400
2598071.735900
1
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Projected
GCS_North_American_1983
Linear Unit: Meter (1.000000)
USA_Contiguous_Albers_Equal_Area_Conic_USGS_version
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1.0
FGDC CSDGM Metadata
ISO19139
250000
24000
Steve Nechero
U.S. Department of Agriculture, Natural Resources Conservation Service, National Cartography and Geospatial Center
Cartographer, Technology Applications Team Lead
817-509-3366
817-509-3469
501 W. Felix St., Bldg. 23
Fort Worth
TX
76115
US
Steve.Nechero@ftw.usda.gov
ArcGIS Metadata
1.0
external
cffc1cfbe51acd03247503d7ecba783e
ACPF Support
ACPF National Hub
Database Manager
613 Morrill Rd, 218 Durham Center
Ames
Iowa
50011
acpfsupport@iastate.edu
US
True
ACPF Support
File Geodatabase Feature Class
10.8.1
ACPF Watershed Boundary
2009-01-01
U.S. Department of Agriculture, Natural Resources Conservation Service, National Cartography and Geospatial Center
Fort Worth, Texas
U.S. Department of Agriculture, Natural Resources Conservation Service, National Cartography and Geospatial Center
vector digital data
ACPF Support
ACPF National Hub
Database Manager
613 Morrill Rd, 218 Durham Center
Ames
Iowa
50011
acpfsupport@iastate.edu
US
ACPF Support
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This watershed boundary feature class has been assembled to support agricultural conservation planning. The original data used to create this database are the Watershed Boundary Dataset (WBD) for the three individual states. The majority of the metadata found herein pertains to the Watershed Boundary Dataset (WBD) and has been modified only to reflect the repurposing of the data in its aggregated form. Watershed boundaries are updated annually to match boundaries supplied by the WBD in the first quarter of the update year.</SPAN></P><P><SPAN>This data set is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the entire United States. This data set consists of geo-referenced digital data and associated attributes created in accordance with the "Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3" (04/01/2009). http://www.ncgc.nrcs.usda.gov/products/datasets/watershed/index.html . Polygons are attributed with hydrologic unit codes for 4th level sub-basins, 5th level watersheds, 6th level subwatersheds, name, size, downstream hydrologic unit, type of watershed, non-contributing areas and flow modification.</SPAN></P></DIV></DIV></DIV>
The Watershed and Subwatershed hydrologic unit boundaries provide a uniquely identified and uniform method of subdividing large drainage areas. The smaller sized 6th level sub-watersheds (up to 250,000 acres) are useful for numerous application programs supported by a variety of local, State, and Federal Agencies. This data set is intended to be used as a tool for water-resource management and planning activities, particularly for site-specific and localized studies requiring a level of detail provided by large-scale map information. The dataset is seamless and, for the most part, a nationally consistent geospatial database.
Funding and support for the Watershed Boundary Dataset (WBD) were provided by the Natural Resources Conservation Service, the Environmental Protection Agency, and the United States Geological Survey. Representatives from the U.S. Geological Survey and Environmental Protection Agency contributed a substantial amount of time and salary towards quality review and updating of the dataset in order to meet the Federal Standards for Delineation of Hydrologic Unit Boundaries.
United States of America
United States
USA
HUC
Watershed Boundary Dataset
Sub-region
Subwatershed
HUC12
Hydrologic Unit Code
Hydrologic Units
WBD
Watershed
Watershed Boundaries
Sub-basin
Basin
boundaries
Region
ISO 19115 Topic Categories
boundaries
HUC
Watershed Boundary Dataset
United States of America
Sub-region
United States
Subwatershed
HUC12
Hydrologic Unit Code
Hydrologic Units
WBD
Watershed
boundaries
Watershed Boundaries
Sub-basin
USA
Basin
boundaries
Region
USDA/ARS
Agricultural Conservation Planning Framework
ACPF
The distributor shall not be held liable for improper or incorrect use of this data, based on the description of appropriate/inappropriate uses described in this metadata document. It is strongly recommended that this data is directly acquired from the distributor and not indirectly through other sources which may have changed the data in some way. These data should not be used at scales greater than 1:24,000 for the purpose of identifying hydrographic watershed boundary feature locations in the U.S.A. The U.S. Department of Agriculture makes no claims for the data's suitability for other purposes. U.S. Department of Agriculture should be acknowledged as the data source in products derived from these data. The Watershed Boundary Dataset is public information and may be interpreted by all organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application of the data. Federal, State, or local regulatory bodies are not to reassign to the U.S. Department of Agriculture or the Natural Resources Conservation Service any authority for the decisions they make. The Natural Resources Conservation Service will not perform any evaluations of these maps or purposes related solely to State or local regulatory programs. Photographic or digital enlargement of these maps to scales greater than that at which they were originally delineated can result in misrepresentation of the data. If enlarged, the maps will not include the fine detail that would be appropriate for mapping at the small scale. Digital data files are periodically updated. Files are dated, and users are responsible for obtaining the latest version of the data from the source distributor.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The distributor shall not be held liable for improper or incorrect use of this data, based on the description of appropriate/inappropriate uses described in this metadata document. It is strongly recommended that this data is directly acquired from the distributor and not indirectly through other sources which may have changed the data in some way. These data should not be used at scales greater than 1:24,000 for the purpose of identifying hydrographic watershed boundary feature locations in the U.S.A. The NRCS should be acknowledged as the data source in products derived from these data. The Watershed Boundary Dataset is public information and may be interpreted by all organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application of the data. Federal, State, or local regulatory bodies are not to reassign to the Natural Resources Conservation Service any authority for the decisions they make. The Natural Resources Conservation Service will not perform any evaluations of these maps or purposes related solely to State or local regulatory programs. Photographic or digital enlargement of these maps to scales greater than that at which they were originally delineated can result in misrepresentation of the data. If enlarged, the maps will not include the fine detail that would be appropriate for mapping at the small scale. Digital data files are periodically updated. Files are dated, and users are responsible for obtaining the latest version of the data from the source distributor.</SPAN></P></DIV></DIV></DIV>
-91.761608
-91.585877
42.953066
43.039376
publication date
1980-01-01T00:00:00
Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362
Steve Nechero
U.S. Department of Agriculture, Natural Resources Conservation Service, National Cartography and Geospatial Center
Cartographer, Technology Applications Team Lead
817-509-3366
817-509-3469
501 W. Felix St., Bldg. 23
Fort Worth
TX
76115
US
Steve.Nechero@ftw.usda.gov
Steve Nechero
1
-95.140200
-94.961650
46.368769
46.146055
ACPF Support
ACPF National Hub
Database Manager
613 Morrill Rd, 218 Durham Center
Ames
Iowa
50011
acpfsupport@iastate.edu
US
False
ACPF Support
There are no unclosed polygons, intersections without nodes, or polygons without labels or with more than one label. The ArcGIS geodatabase topology tools were used to make corrections using 11 rules including no gaps, no overlaps, identify cooresponding linework for every polygon boundary, and remove duplicate lines with the same beginning and ending nodes.
There are no unclosed polygons, intersections without nodes, or polygons without labels or with more than one label. The ArcGIS geodatabase topology tools were used to make corrections using 11 rules including no gaps, no overlaps, identify cooresponding linework for every polygon boundary, and remove duplicate lines with the same beginning and ending nodes.
All fields for all polygons are attributed. Some polygons in the Ncontrb_a field might have a 0 value.
10% of the attributes were visually reviewed. The accuracy of this data is dependent on the level of detail of the source material and the interpretation procedures for capturing that source.
The WBD was produced using Digital Raster Graphics (DRG's) as the source map. Data completeness for DRG files reflects content of the source graphic and may therefore be reflected in the completeness and accuracy of the WBD. The map was digitized from USGS 1:24,000-scale digital raster graphic base maps, with an inherited error of +/- 40 feet according to the USGS National Map Accuracy Standards. It is estimated that any errors detected were less than 10%. It should also be noted that while general rules of hydrology were used (i.e. natural water flow is downhill), the locations of boundaries is still somewhat subjective as the 1:24,000-scale DRG's do not always provide enough information for identifying the location of the boundaries.
hydrologic unit map delineation and digitize map
24000
Digital Raster Graphic
USGSDRG
U.S. Geological Survey
http://datagateway.nrcs.usda.gov
map delineation
1999-01-01
bndMetaTemplate
identifies watershed boundaries (as polygons)
n/a
Feature Class
1
OBJECTID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
1990s
Ongoing
Unknown
Sequential unique whole numbers that are automatically generated in SDE.
As needed
OBJECTID
OID
4
0
0
HUC_12
Twelve Digit Hydrologic Unit Code: This field provides a unique 12-digit code for each subwatershed. Numbers were assigned in an upstream to downstream fashion. Where no downstream/upstream relationship could be determined numbers were assigned in a clockwise fashion.
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3.
010000000000
999999999999
1990s
Ongoing
Unknown
Populated/changed by state stewards.
As needed
HUC_12
String
12
0
0
HUC_8
HUC_8
String
8
0
0
HUC_10
HUC_10
String
10
0
0
ACRES
Area of subwatershed including non-contributing areas calculated to acres as a whole number, no decimals. The "Acres" field was calculated from the "Area" field.
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3.
0
2500000
Acres
1990s
Ongoing
Calculated in Geographic NAD83.
Area of subwatershed including non-contributing areas calculated to acres as a whole number, no decimals. The "Acres" field was calculated from the "Area" field.
As needed
ACRES
Double
8
0
0
HU_12_DS
Sixth Level Downstream Hydrologic Unit Code: This field was populated with the 12-digit code of the 6th level hydrologic unit that is receiving the majority of the flow from the subwatershed. Outlets created by ditching or other artificial drainage were not considered for this field. If a HU flows into an ocean or the Gulf of Mexico it was populate with "OCEAN" and if a HU flows into one of the Great Lakes the term "LAKE" was used. If a HU flows across international borders, "CANADA" or "MEXICO" was used depending on which country the HU drains into. If an HU is a closed basin, this field was populated with the term "CLOSED BASIN".
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3.
010000000000
999999999999
1990s
Ongoing
Unknown
Populated manually by data stewards.
As needed
HU_12_DS
String
12
0
0
HU_10_DS
HU_10_DS
String
10
0
0
HU_10_NAME
HU_10_NAME
String
80
0
0
HU_10_MOD
HU_10_MOD
String
20
0
0
HU_10_TYPE
HU_10_TYPE
String
1
0
0
HU_12_NAME
Sixth Level Hydrologic Unit Name: Officially recognized names were used in this field. This field was populated by following the directions in subsection 6.3 "Watershed and Subwatershed Naming Protocol". The name used to attribute the subwatershed was used only once within a 4th level unit.
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3.
Character String
1990s
Ongoing
Unknown
Populated manually by data stewards.
As needed
HU_12_NAME
String
80
0
0
HU_12_MOD
Sixth Level Hydrologic Unit Modifications: This field identifies any type of man-made modification(s) to natural overland flow that alters the location of the hydrologic unit boundary for a 12-digit subwatershed. One or more of the following abbreviations was chosen for this field.
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3.
SC
Stormwater Canal or Drainage Canal
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
ID
Irrigation Ditch
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
IT
Interbasin Transfer
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
BC
Barge Canal or Navigation Canal
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
SD
Stormwater Ditch
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
PD
Pipe Diversion
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
CD
Channel Diversion
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
NC
Noncontributing Area
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
KA
Karst
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
LE
Levee
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
NM
No Modifications
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
OC
Overflow Channel or Flume
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
DM
Dam at outlet or HU boundary
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
GC
General Canal/Ditch
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
PS
Pumping Station
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
DD
Drainage Ditch
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
SI
Siphon
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
AD
Aqueduct
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
RS
Reservoir
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
TF
Transportation Feature (road, railroad, docks etc.)
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
GF
Ground-Water Flow
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
MA
Mining Activity
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
UA
Urban Area
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
GL
Glacier
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
IF
Ice Field
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
OF
Overbank Flow
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
OT
Other
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
1990s
Ongoing
Unknown
Populated manually by data stewards.
As needed
HU_12_MOD
String
20
0
0
HU_12_TYPE
Sixth Level Hydrologic Unit Type: This field was populated with the hydrologic unit type from the list provided that most closely identifies the subwatershed.
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3.
S
"Standard" hydrologic unit - Any land HU with drainage flowing to a single outlet point, excluding non-contributing areas. This includes areas or small triangular wedges between adjacent HU's that remain after classic hydrologic units are delineated. Some examples include "true", "classic", "composite", and "remnant" hydrologic units.
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3.
C
"Closed Basin" hydrologic unit - A drainage area that is 100% non-contributing. This means all surface flow is internal, no overland flow leaves the hydrologic unit through the outlet point.
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
F
"Frontal" hydrologic unit - Areas along the coastline of lakes, oceans, bays, etc. that have more than one outlet. These HU's are predominantly land with some water areas at or near the outlet(s).
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
W
"Water" hydrologic unit - Hydrologic units that are predominantly water with adjacent land areas, ex. lake, easturies, harbors.
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
I
"Island" hydrologic unit - A hydrologic unit that is one or more islands and adjacent water out to the toe of the shore face.
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
U
"Unclassified" hydrologic unit - A hydrologic unit that can't be defined or doesn't fit into one of the types that have been listed.
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3
1990s
Ongoing
Unknown
Populated manually by data stewards.
As needed
HU_12_TYPE
String
1
0
0
STATES
The "States" field includes the names of all state(s) that the subwatershed falls within. The 2-digit postal abbreviation in upper case and in alphabetical order was used, separated with a comma.
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3.
Character String
1990s
Ongoing
Unknown
Populated manually by data stewards.
As needed
STATES
String
20
0
0
META_ID
META_ID
String
4
0
0
SHAPE
Feature geometry.
ESRI
Coordinates defining the features.
1990s
Ongoing
Edited by state stewards.
Generally +/- 13 meters of real world coordinates.
As needed
Shape
Geometry
0
0
0
AreaPctMean
AreaPctMean
Single
4
0
0
SHAPE_Length
Length of feature in internal units.
ESRI
Positive real numbers that are automatically generated.
Shape_Length
Double
8
0
0
SHAPE_Area
Area of feature in internal units squared.
ESRI
Positive real numbers that are automatically generated.
Shape_Area
Double
8
0
0
Each hydrologic unit polygon has associated attributes stored in tabular format. An attribute, also called a field or column, is defined by name, type, size, and valid values. For this layer, these attributes are
the Hydrologic Unit Codes, Names, Acreage, States crossed, non-contributing area, Downstream unit code, Type, and Modification. ftp://ftp-fc.sc.egov.usda.gov/NCGC/products/watershed/hu-standards.pdf
Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3.
dataset
Esri
8.1.2
1
Simple
FALSE
1
TRUE
FALSE
20230322
ACPF Support
ACPF National Hub
Database Manager
613 Morrill Rd, 218 Durham Center
Ames
Iowa
50011
acpfsupport@iastate.edu
US