Topological rules for digital basins 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:
Topological rules for digital 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: 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 Tecniques 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 topology contains all topology rules that govern the spatial relations between the BasinLines feature class and the BasinPolys feature class. Topology has no spatial components or attributes that are stored, but represents the relations between the lines and polygons within the geodatabase. 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:
The topology was developed in 2009 to provide the rules for testing new basin boundaries developed by the U.S. Geological Survey Colorado Water Science Center. The purpose of distributing the topology class with the line and polygon feature classes that these topology rules govern is to present a complete geodatabase schema that others may use as a guide when editing and delineating basin boundaries for their area of interest. The topological rules govern two feature classes in this geodatabase: BasinPolys and BasinLines, that were generated for the purpose of determining accurate drainage-basin areas for publication in NWISWeb and in the Annual Water Data Report.
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.
Supplemental_Information:
Only the most 'static' topology rules are maintained in this topology - other topological rules are added periodically to test the spatial relations among the three feature classes in this geodatabase and between the basin boundaries and the features in the National Watershed Boundary Dataset.
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:
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. This dataset is intended for archival of drainage-basin areas and boundaries.
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. Geologcial 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 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 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:
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: 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 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: There are no attributes in the topology.
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: not applicable
Attribute_Accuracy_Explanation:
Because topology has no attributes, there are no accuracy requirements aside from those for the feature classes themselves. However, there is a single, hidden topology rule that constrains how close, therefore, how accurate vertices can be in the dataset. That rule is the 'cluster tolerance.' The cluster tolerance of this dataset has been set to match that of the National Watershed Boundary Dataset (WBD), which is 0.001 m. The cluster tolerance matches the "XY Tolerance" set for the feature dataset, BasinsFD. Cluster tolerance is set as the topology is created in ArcCatalog.
Logical_Consistency_Report:
Topology ensures that features across the entire extent of a dataset are consistent in their 'spatial behavior' and spatial interrelationships.
Two topology rules are used to constrain the spatial 'behavior' of features in the BasinLines feature class: (1) the BasinLines features are constrained to not have dead ends ("dangles"). (2) the BasinLines features are constrained to not overlap one another and that any lines forming an intersection in this feature class are split at the intersection to form a node point. Two topology rules ensure that lines in the BasinLines feature class are always coincident with a polygon boundary in BasinPolys feature class: (3) all features in the BasinLines feature class must be covered by a basin boundary in the BasinPoly feature class. (4) all basin boundaries in the BasinPoly feature class must be covered by a line feature in the BasinLines feature class.
Completeness_Report:
Regarding the topology rules, there are presently no exceptions to the rules saved in the topology. All new basins are tested as they are added to this archive to check that they conform to these rules.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Topology has no spatial components that are stored, but represents the accuracy of the lines and polygons within the geodatabase that participate in the topology. Horizontal and vertical accuracy are given in reference to the two feature classes in this geodatabase that are impacted by these topology rules: BasinLines and BasinPolys. 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 to 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:
Topology has no spatial components that are stored, but represents the accuracy of the lines and polygons within the geodatabase which participate in the topology. Horizontal and vertical accuracy is given in reference to the Basinlines and Basin Polys. 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:
Process_Step:
Process_Description:
All topology rules were created in ArcCatalog at the feature dataset level. The four rules added are: (1) BasinLines Must Not Have Dangles (2) BasinLines Must Not Intersect Or Touch Interior (3) BasinLines Must Cover Boundary of BasinPolys (4) BasinPolys Boundary Must Be Covered By BasinLines
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 site to the nearest WBD lines. As each basin was delineated, the ArcMap topology was 'validated' to compare the newly added features against the topology rules above. Any topology errors were fixed before saving the new edits.
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: String
Point_and_Vector_Object_Count: 2,832
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 514
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: BasinsFD_Topology
Entity_Type_Definition: topology
Entity_Type_Definition_Source: created by U.S. Geological Survey
Overview_Description:
Entity_and_Attribute_Overview: Not applicable: there are no attributes for topologies.
Entity_and_Attribute_Detail_Citation: Not applicable: there are no attributes for topologies.
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:
Geodatabase with polygon, line, and point feature classes of Colorado Water Science Center watershed boundaries.
Format_Information_Content: file geodatabase
File_Decompression_Technique: zipped
Transfer_Size: 33.7 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: Hydologist
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 13:53:44 2012