Basin polygons developed by the U.S. Geological Survey Colorado Water Science Center for gages and other sites, published 2012

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey (USGS)
Publication_Date: 2012
Title:
Basin polygons developed by the U.S. Geological Survey Colorado Water Science Center for gages and other sites, published 2012
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: U.S. Geological Survey Digital Data Series
Issue_Identification: 650
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/ds/650/DS_650_COBasins.zip/
Larger_Work_Citation:
Citation_Information:
Originator: J. A. Dupree, and R. M. Crowfoot
Publication_Date: 2012
Title:
Digital Database Architecture and Delineation Methodology for Deriving Drainage Basins, and Comparison of Digitally and Non-Digitally Derived Numeric Drainage Areas
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: U.S. Geological Survey Techniques and Methods
Issue_Identification: Book 11, Section C, Chapter 6
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <http://pubs.er.usgs.gov/>
Description:
Abstract:
This polygon feature class includes two-dimensional basin areas and is used to derive drainage areas published in the Data Report and on NWISWeb for the Colorado Water Science Center. This feature class is one of three in the geodatabase and accompanies the feature class containing linear basin perimeters (BasinLines) and a feature class that contains the site/gage points for which basin boundaries have been delineated (Sites). This dataset was published with a U.S. Geological Survey Techniques and Methods report entitled "Digital Database Architecture and Delineation Methodology for Deriving Drainage Basins, and Comparison of Digitally and Non-Digitally Derived Numeric Drainage Areas."
Purpose:
This polygon feature class is one of three feature classes that were developed in 2009 as a digital archive for new basin boundaries developed by the U.S. Geological Survey (USGS) Colorado Water Science Center. The BasinPolys, BasinLines, and Sites feature classes were generated for the purpose of determining accurate numeric drainage-basin areas for publication in NWISWeb and in the Annual Water Data Report.
The polygon feature class contains the two-dimensional basin areas for various sites in Colorado and neighboring states. It includes an attribute for numeric drainage-basin area that is published by the USGS.
The original, prototype geodatabase included linework from various sources and was changed in 2009 to rely on the National Watershed Boundary dataset (WBD) of the U.S. Department of Agriculture, Natural Resources Conservation Service. The WBD was used because it is a nationally consistent dataset that is seamless across the conterminous United States. Other linework needed to generate a basin boundary for a specific site was manually digitized from USGS digital raster graphics (DRG) maps at a scale of 1:24,000.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: unknown
Currentness_Reference: publication date
Status:
Progress: In work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -109.574898
East_Bounding_Coordinate: -100.643798
North_Bounding_Coordinate: 41.681409
South_Bounding_Coordinate: 35.496380
Keywords:
Theme:
Theme_Keyword_Thesaurus: none.
Theme_Keyword: inlandWaters
Theme_Keyword: basin
Theme_Keyword: watershed
Theme_Keyword: watershed boundaries
Theme_Keyword: WBD
Theme_Keyword: National Watershed Boundary Dataset
Theme_Keyword: topology
Place:
Place_Keyword_Thesaurus: none.
Place_Keyword: Colorado
Access_Constraints: None.
Use_Constraints:
These basin polygons represent the entire upstream area from each site, and therefore are 'nested' on top of each other. Some spatial analysis operations will not produce accurate results for nested polygons and, in general, the basin polygons must be processed individually. This dataset is intended for archival of drainage basin areas and boundaries.
As part of the workflow, basin boundaries have been snapped to the site location in the Sites feature class, so that each basin boundary always overlies the site for which the basin was derived.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ask USGS
Contact_Organization: U.S. Geological Survey
Contact_Position: Ask USGS -- Water Webserver Team
Contact_Address:
Address_Type: mailing address
Address: 445 National Center
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 1-888-275-8747 (1-888-ASK-USGS)
Data_Set_Credit:
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Security_Information:
Security_Classification_System: Department of the Interior
Security_Classification: Unclassified
Security_Handling_Description: Data are published and available online.
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3500
Cross_Reference:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2012
Title:
Basin perimeters developed by the U.S. Geological Survey Colorado Water Science Center for gages and other sites, published 2012
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: U.S. Geological Survey Digital Data Series
Issue_Identification: 650
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/ds/650/DS_650_COBasins.zip/
Larger_Work_Citation:
Citation_Information:
Originator: Dupree, J.A., and Crowfoot, R. M.
Publication_Date: 2012
Title:
Digital Database Architecture and Delineation Methodology for Deriving Drainage Basins, and Comparison of Digitally and Non-Digitally Derived Numeric Drainage Areas
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: U.S. Geological Survey Techniques and Methods
Issue_Identification: Book 11, Section C, Chapter 6
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Dupree, J.A., and Crowfoot, R.M., 2012, Digital Digital Database Architecture and Delineation Methodology for Deriving Drainage Basins, and Comparison of Digitally and Non-Digitally Derived Numeric Drainage Areas, U.S. Geological Survey Techniques and Methods Book 11, Section C, Chapter 6.
Online_Linkage: <http://pubs.er.usgs.gov/>
Cross_Reference:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2012
Title:
Site locations for basins developed by the U.S. Geological Survey Colorado Water Science Center for gages and other sites, published 2012
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: U.S. Geological Survey Digital Data Series
Issue_Identification: 650
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/ds/650/DS_650_COBasins.zip/
Larger_Work_Citation:
Citation_Information:
Originator: Dupree, J.A., and Crowfoot, R.M.
Publication_Date: 2012
Title:
Digital Database Architecture and Delineation Methodology for Deriving Drainage Basins, and Comparison of Digitally and Non-Digitally Derived Numeric Drainage Areas
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: U.S. Geological Survey Techniques and Methods
Issue_Identification: Book 11, Section C, Chapter 6
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Dupree, J.A., and Crowfoot, R.M., 2012, Digital Digital Database Architecture and Delineation Methodology for Deriving Drainage Basins, and Comparison of Digitally and Non-Digitally Derived Numeric Drainage Areas, U.S. Geological Survey Techniques and Methods Book 11, Section C, Chapter 6.
Online_Linkage: <http://pubs.er.usgs.gov/>
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The "AreaSqMi" field is computed from the "Shape_Area" field and conforms to the minimum National Water Information System (NWIS) basin area accuracy standards: basin areas are published and known to 3 significant figures for all basins less than 1,000 square miles and basins are accurate to one square mile for those basins greater than 1,000 square miles. Basins less than 10 square miles are rounded to two decimal places. This area accuracy is assured because of the use of an equal-area projection system. Attribute entry for the "Approved" field (indicating whether the basin has been checked and that if the basin area is ready to be entered into NWIS) is constrained by a domain that ensures that the delineator chooses only certain values. Default value for this domain is 'No.'
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: See Explanation
Attribute_Accuracy_Explanation:
Attribute accuracy is described, where present, with each attribute defined in the Entity and Attribute Section.
Logical_Consistency_Report:
To ensure that they are derived in a uniform way across the extent of this dataset, basin boundaries were generated consistently, either by copying certified WBD linework or by manually digitizing lines using digital maps having a uniform scale (1:24,000).
Two topology rules ensure that basin boundaries in the BasinPolys feature class are always coincident with a line feature in the BasinLines feature class: (1) BasinPoly Boundary Must Be Covered By BasinLines and (2) BasinLines Must Be Covered By Boundary Of BasinPoly.
Most polygons in this dataset represent nested basin boundaries. After each basin was delineated, the new linework was tested against the topology rules to help ensure that nested polygons have coincident boundaries. Application of the topology rules does not guarantee that the nested basin boundaries will be coincident, but it does help detect such errors.
Completeness_Report:
All polygons are attributed for a site identifier and site name from NWIS. The NWIS site identifier (STAID) and site name (STANAME) fields correspond to the SiteId and SiteName fields in the Site feature class.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Basin boundaries are a combination of lines derived from the National Watershed Boundary Dataset (WBD) or by manually digitizing lines from 1:24,000 digital raster graphics (DRG) source maps. Linework was derived by interpretation of DRG topographic contour information in order to correctly position the basin divide. Both the WBD and digitized lines inherit an error of +/- 40 feet (a contour interval) according to National Map Accuracy Standards for 1:24,000 topographic map products. Whether originating from the WBD or from on-screen digitizing, boundary locations are interpretive and somewhat subjective even though general rules of hydrology were used (for example, natural water flows downhill). Interpretive accuracy of these data varies somewhat on the contour spacing in the original DRG source material. Digitizing of new lines proceeded generally at a scale between 1:6,000 and 1:10,000.
If the basin area differed by 3 percent from the published NWIS area, the basin was reviewed for accuracy, using the topographic maps as a guide for accuracy determination. Basins areas also were compared with those for the nearest upstream and downstream basin for consistency.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 0
Horizontal_Positional_Accuracy_Explanation:
0 is used as a placeholder for unknown and variable horizontal accuracy.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Vertical accuracy is also assumed to be variable, depending on relief. Accuracy is assumed to be within one-half a contour interval (40 feet for most of Colorado), or 20 feet.
Quantitative_Vertical_Positional_Accuracy_Assessment:
Vertical_Positional_Accuracy_Value: 20
Vertical_Positional_Accuracy_Explanation:
20 feet - accuracy assumed to generally be one-half a contour interval; the contour interval for most topographic maps in Colorado is 40 feet.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
U.S. Department of Agriculture, Natural Resources Conservation Service, National Cartography and Geospatial Center
Publication_Date: 2009
Title: National Watershed Boundary Dataset
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: N/A
Issue_Identification: N/A
Publication_Information:
Publication_Place: Fort Worth, Texas
Publisher:
U.S. Department of Agriculture, Natural Resources Conservation Service
Other_Citation_Details:
source for seamless WBD for conterminous U.S.:
ftp://ftp.ftw.nrcs.usda.gov/wbd/
Online_Linkage: <http://datagateway.nrcs.usda.gov/>
Source_Scale_Denominator: 24,000
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2009
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: WBD
Source_Contribution: GIS dataset used as reference for basin boundary delineation
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: Unknown
Title: USGS Digital Raster Graphics
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: N/A
Issue_Identification: N/A
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
also, ESRI map service accessible using ArcMap: <http://resources.esri.com/arcgisdesktop/index.cfm?fa=content&tab=Layers>
Online_Linkage: <http://datagateway.nrcs.usda.gov>
Source_Scale_Denominator: 24,000
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2009
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: USGSDRG
Source_Contribution: GIS dataset used as reference for basin boundary delineation
Process_Step:
Process_Description:
Basin delineation for the dataset occurred by copying lines or polygons from the WBD. Lines were digitized from 1:24,000-scale DRG topographic maps to connect the basin outlet site to the nearest WBD lines. Basin polygons are the source of the numeric drainage-basin areas recorded in NWIS for the SiteIds included in this dataset. Numeric drainage-basin areas for new basins were reviewed by comparison to areas for basins for sites upstream or downstream from the site used to delineate the new basin. Detailed instructions for basin delineation, basin review, and data storage in the geodatabase are given in the Techniques and Methods report associated with this dataset.
Source_Used_Citation_Abbreviation: USGSDRG
Source_Used_Citation_Abbreviation: WBD
Process_Date: 2009
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, Colorado Water Science Center
Contact_Person: Jean A. Dupree
Contact_Position: Hydrologist
Contact_Address:
Address_Type: mailing and physical address
Address: Denver Federal Center, MS 415
Address: P.O. Box 25046
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: USA
Contact_Voice_Telephone: (303) 236-4887
Contact_Facsimile_Telephone: (303) 236-4912
Contact_Electronic_Mail_Address: dupree@usgs.gov
Hours_of_Service: 7:30AM - 4:00PM M-F
Cloud_Cover: 0
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 518
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 37.500000
Standard_Parallel: 40.500000
Longitude_of_Central_Meridian: -105.500000
Latitude_of_Projection_Origin: 37.000000
False_Easting: 0.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000500
Ordinate_Resolution: 0.000500
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988
Altitude_Resolution: 0.000125
Altitude_Distance_Units: feet
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: BasinPolysSorted
Entity_Type_Definition: polygons
Entity_Type_Definition_Source: compiled by U.S. Geological Survey
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: SHAPE
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Shape geometry type, in this case: polygon.
Attribute:
Attribute_Label: SiteId
Attribute_Definition:
8- or 15-digit site identifier from National Water Information System (NWIS or a descriptive name for a confluence.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: Site identifier.
Attribute:
Attribute_Label: SiteName
Attribute_Definition: Site name from the National Water Information System (NWIS).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: Site name.
Attribute:
Attribute_Label: AreaSqMi
Attribute_Definition: Area of the basin in square miles.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
Basin area in square miles generated by dividing the Shape_area field (in square meters) by 2,589,988 to convert to square miles.
Attribute:
Attribute_Label: AreaRounded
Attribute_Definition: AreaSqMi entry rounded to U.S. Geological Survey specifications
Attribute_Definition_Source: U.S. Geological Survey - NWIS standards
Attribute_Domain_Values:
Unrepresentable_Domain:
Basin area in square miles derived from the AreaSqMi field. If the area is less than 10, it is rounded to 2 decimal places; if it is less than 1000, it is rounded to three significant figures; if it is greater than 1000, it is rounded to the nearest square mile.
Attribute:
Attribute_Label: Approved
Attribute_Definition:
field indicating that the basin boundary has been reviewed and approved by the Colorado Water Science Center Data Section
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: No
Enumerated_Domain_Value_Definition:
Basin has not been approved, and the drainage-base area is not ready for publication.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Enumerated_Domain:
Enumerated_Domain_Value: Yes
Enumerated_Domain_Value_Definition:
Basin has been approved and the drainage-basin area is ready for publication.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: NWISChanged
Attribute_Definition:
field indicating whether basin drainage area has been updated in NWIS
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: No
Enumerated_Domain_Value_Definition: Basin drainage area has not been updated in NWIS.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Enumerated_Domain:
Enumerated_Domain_Value: Yes
Enumerated_Domain_Value_Definition: Basin drainage area has been updated in NWIS.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: SHAPE_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: SHAPE_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Overview_Description:
Entity_and_Attribute_Overview:
The polygons in this feature class each represent a basin boundary developed for a site location in the Site feature class. The SiteId and SiteName fields correspond to entries in the Site feature class and are the same as the identifiers and names for the site used in the Annual Data Report and on NWISWeb. Polygons represent the entire upstream area from each site, and therefore are 'nested' on top of each other. Because the projection system used for the feature dataset container is an Albers Equal Area projection, the digital area automatically calculated in the ESRI "Shape_Area" field is an exact measurement of the area enclosed by the basin polygon. The "AreaSqMi" field is derived from the "Shape_area" field by dividing the "Shape_Area" field by 2,589,988. NWISWeb: <http://waterdata.usgs.gov/nwis> for the SiteId and SiteName fields.
Entity_and_Attribute_Detail_Citation:
NWISWeb: <http://waterdata.usgs.gov/nwis> for the SiteId and SiteName fields.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ask USGS
Contact_Organization: U.S. Geological Survey
Contact_Position: Ask USGS -- Water Webserver Team
Contact_Address:
Address_Type: mailing address
Address: 445 National Center
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 1-888-275-8747 (1-888-ASK-USGS)
Resource_Description: Downloadable Data
Distribution_Liability:
Although this dataset has been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.
Standard_Order_Process:
Non-digital_Form:
Request data on CD-ROM from AskUSGS. Contact them at <http://ask.usgs.gov/>
Fees: None. This dataset is provided by USGS as a public service.
Ordering_Instructions: <http://ask.usgs.gov/>
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Geodatabase
Format_Version_Number: ArcGIS v. 9.3.1
Format_Specification: ESRI file geodatabase
Format_Information_Content:
Geodatabase with polygon, line, and point feature classes of Colorado Water Science Center watershed boundaries.
File_Decompression_Technique: zip
Transfer_Size: 17.1 MB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://pubs.usgs.gov/ds/650/DS_650_COBasins.zip/
Fees: None. This dataset is provided by USGS as a public service.
Ordering_Instructions: <http://ask.usgs.gov/>
Metadata_Reference_Information:
Metadata_Date: 20120418
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, Colorado Water Science Center
Contact_Person: Jean A. Dupree
Contact_Position: Hydrologist
Contact_Address:
Address_Type: mailing and physical address
Address: Denver Federal Center, MS 415
Address: P.O. Box 25046
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: USA
Contact_Voice_Telephone: (303) 236-4887
Contact_Facsimile_Telephone: (303) 236-4912
Contact_Electronic_Mail_Address: dupree@usgs.gov
Hours_of_Service: 7:30AM - 4:00PM M-F
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Generated by mp version 2.9.6 on Fri Apr 20 13:53:32 2012