Tijuana River Watershed Digital Boundary File
Metadata:
- Identification_Information:
-
- Citation:
-
- Citation_Information:
-
- Originator: Center for Earth Systems Analysis Research
- Originator: El Colegio de la Frontera Norte
- Publication_Date: 20000601
- Title: Tijuana River Watershed Digital Boundary File
- Geospatial_Data_Presentation_Form: vector digital data
- Publication_Information:
-
- Publication_Place: San Diego, California USA
- Publisher: Center for Earth Systems Analysis Research
- Larger_Work_Citation:
-
- Citation_Information:
-
- Originator: Center for Earth Systems Analysis Research
- Originator: El Colegio de la Frontera Norte
- Publication_Date: 20000601
- Title: Tijuana River Watershed GIS Database
- Geospatial_Data_Presentation_Form: map
- Publication_Information:
-
- Publication_Place: San Diego, California USA
- Publisher: Center for Earth Systems Analysis Research
- Description:
-
- Abstract:
-
The Tijuana River Watershed Digital Boundary File was created as part of the Tijuana River Watershed GIS database project. The boundary was delineated from a Digital Elevation Model and then corrected using aerial stereoscopic photos. It is not based on legal descriptions.
- Purpose:
-
The Tijuana River Watershed GIS Database project provides a fully integrated cross border geographic information system. One of the layers in the dataset was a digital boundary. The boundaries were delineated from a Digital Elevation Model and then corrected using aerial stereoscopic photos. The boundaries are not based on legal descriptions.
- Supplemental_Information:
-
These boundaries are not to be taken as legal definitions of the Tijuana River Watershed boundaries.
- Time_Period_of_Content:
-
- Time_Period_Information:
-
- Range_of_Dates/Times:
-
- Beginning_Date: 19951010
- Ending_Date: 20000301
- Currentness_Reference: Publication date
- Status:
-
- Progress: Complete
- Maintenance_and_Update_Frequency: None planned
- Spatial_Domain:
-
- Bounding_Coordinates:
-
- West_Bounding_Coordinate: -117.1338
- East_Bounding_Coordinate: -115.8888
- North_Bounding_Coordinate: 32.9296
- South_Bounding_Coordinate: 32.1318
- Keywords:
-
- Theme:
-
- Theme_Keyword_Thesaurus: None
- Theme_Keyword: bi-national
- Theme_Keyword: cross border
- Theme_Keyword: boundaries
- Theme_Keyword: watershed
- Theme_Keyword: inlandWaters
- Place:
-
- Place_Keyword_Thesaurus: None
- Place_Keyword: Mexico
- Place_Keyword: San Diego
- Place_Keyword: Tijuana
- Place_Keyword: United States
- Access_Constraints: None
- Use_Constraints: Not for Legal Use
- Point_of_Contact:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization: Center for Earth Systems Analysis Research
- Contact_Person: David McKinsey
- Contact_Position: CESAR Technical Manager
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: 5500 Campanile Drive
- City: San Diego
- State_or_Province: California
- Postal_Code: 92182-4493
- Country: USA
- Contact_Voice_Telephone: (619) 594-8042
- Contact_Facsimile_Telephone: (619) 594-4938
- Contact_Electronic_Mail_Address: mckinsey@mail.sdsu.edu
- Hours_of_Service: Monday - Friday, 9am-4pm, Pacific Standard Time
- Native_Data_Set_Environment: ArcInfo Coverage
- Data_Quality_Information:
-
- Attribute_Accuracy:
-
- Attribute_Accuracy_Report:
-
All attributes created during the data generation phase were verified by comparing the lines in both the dataset and the spatial coverage, but no formal tests were performed.
- Logical_Consistency_Report:
-
These data are believed to be logically consistent, though no tests were performed. Line geometry is topologically clean.
- Completeness_Report:
-
The boundaries of the watershed are dependent on the elevation contours as delineated on numerous USGS 7.5 Minute, and INEGI 1:50000 Topographic Maps, and 1:12500 aerial photography. The edges might change as more accurate maps and photos become available.
- Positional_Accuracy:
-
- Horizontal_Positional_Accuracy:
-
- Horizontal_Positional_Accuracy_Report:
-
The data were generated from contours scanned from USGS 7.5 Minute, and INEGI 1:50000 Topographic maps. Since the accuracy of the INEGI maps is unknown, horizontal accuracy is unknown.
- Vertical_Positional_Accuracy:
-
- Vertical_Positional_Accuracy_Report:
-
The data were generated from contours scanned from USGS 7.5 Minute, and INEGI 1:50000 Topographic maps. Since the accuracy of the INEGI maps is unknown, vertical accuracy is unknown.
- Lineage:
-
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
-
- Originator: United States Geologic Survey
- Publication_Date: Unknown
- Title: 7.5 Minute Topographic Maps
- Edition: Various
- Geospatial_Data_Presentation_Form: map
- Publication_Information:
-
- Publication_Place: United States
- Publisher: United States Geologic Survey
- Source_Scale_Denominator: 24000
- Type_of_Source_Media: Paper
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Single_Date/Time:
-
- Calendar_Date: Unknown
- Source_Currentness_Reference: Publication Date
- Source_Citation_Abbreviation: USGS
- Source_Contribution: Vector data representing elevation data.
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
-
- Originator: Instituto Nacional de Estadistica Geografia e Informatica
- Publication_Date: Unknown
- Title: INEGI 1:50000 Topographic Maps
- Edition: Various
- Geospatial_Data_Presentation_Form: map
- Publication_Information:
-
- Publication_Place: Mexico
- Publisher: Instituto Nacional de Estadistica Geografia e Informatica
- Source_Scale_Denominator: 50000
- Type_of_Source_Media: Paper
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Single_Date/Time:
-
- Calendar_Date: Unknown
- Source_Currentness_Reference: Publication Date
- Source_Citation_Abbreviation: INEGI
- Source_Contribution: Vector data representing elevation data
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
-
- Originator: National Oceanic and Atmospheric Administration
- Publication_Date: 19940601
- Title: 1994 Aerial Photographs San Diego / Tijuana River Watershed
- Edition: One
- Geospatial_Data_Presentation_Form: Aerial Photos
- Publication_Information:
-
- Publication_Place: United States
- Publisher: National Oceanic and Atmospheric Administration
- Source_Scale_Denominator: 12500
- Type_of_Source_Media: Paper
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Single_Date/Time:
-
- Calendar_Date: 19940601
- Source_Currentness_Reference: Publication date
- Source_Citation_Abbreviation: NOAA
- Source_Contribution:
-
Aerial photography depiction of study area used to check ArcInfo results.
- Process_Step:
-
- Process_Description:
-
Topographic maps from both sides of the international border were scanned and converted into digital images. These images were then vectorized in ArcInfo and edited to correct spatial and attribute information. The vector coverages for each topo sheet were then merged together and edgematched for each side of the border. Finally, the two merged contour line coverages were merged at the international border. From this one merged contour coverage, a digital elevation model was constructed with a resolution of 30 meters. The DEM was then processed using ArcInfo to delineate the watershed boundary. The derived boundary was then inspected using aerial stereo pair photography to correct any spatial ambiguities resulting from the ArcInfo algorithm.
- Source_Used_Citation_Abbreviation: USGS;INEGI;NOAA
- Process_Date: Unknown
- Source_Produced_Citation_Abbreviation: Unknown
- Process_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Organization: Center for Earth Systems Analysis Research
- Contact_Person: David McKinsey
- Contact_Position: CESAR Technical Manager
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: 5500 Campanile Drive
- City: San Diego
- State_or_Province: California
- Postal_Code: 92182-4493
- Country: USA
- Contact_Voice_Telephone: (619) 594-8042
- Contact_Facsimile_Telephone: (619) 594-4938
- Contact_Electronic_Mail_Address: mckinsey@mail.sdsu.edu
- Hours_of_Service: Monday - Friday, 9am-4pm, Pacific Standard Time
- Spatial_Data_Organization_Information:
-
- Direct_Spatial_Reference_Method: Vector
- Point_and_Vector_Object_Information:
-
- SDTS_Terms_Description:
-
- SDTS_Point_and_Vector_Object_Type: Complete chain
- Point_and_Vector_Object_Count: 54
- SDTS_Terms_Description:
-
- SDTS_Point_and_Vector_Object_Type: Label point
- Point_and_Vector_Object_Count: 1
- SDTS_Terms_Description:
-
- SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
- Point_and_Vector_Object_Count: 1
- Spatial_Reference_Information:
-
- Horizontal_Coordinate_System_Definition:
-
- Planar:
-
- Grid_Coordinate_System:
-
- Grid_Coordinate_System_Name: Universal Transverse Mercator
- Universal_Transverse_Mercator:
-
- UTM_Zone_Number: 11
- Transverse_Mercator:
-
- Scale_Factor_at_Central_Meridian: 0.999600
- Longitude_of_Central_Meridian: -117.000000
- Latitude_of_Projection_Origin: 0.000000
- False_Easting: 500000.000000
- False_Northing: 0.000000
- Planar_Coordinate_Information:
-
- Planar_Coordinate_Encoding_Method: Coordinate pair
- Coordinate_Representation:
-
- Abscissa_Resolution: 0.000005
- Ordinate_Resolution: 0.000005
- Planar_Distance_Units: Meters
- Geodetic_Model:
-
- Horizontal_Datum_Name: North American Datum of 1983
- Ellipsoid_Name: GRS 80
- Semi-major_Axis: 6378137.0000000
- Denominator_of_Flattening_Ratio: 298.26
- Entity_and_Attribute_Information:
-
- Detailed_Description:
-
- Entity_Type:
-
- Entity_Type_Label: wshedbnd.pat
- Entity_Type_Definition: Tijuana River Watershed Boundary Coverage
- Entity_Type_Definition_Source: user-defined
- Attribute:
-
- Attribute_Label: 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.
- Attribute:
-
- Attribute_Label: Perimeter
- Attribute_Definition: Perimeter of feature in internal units.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Positive real numbers that are automatically generated.
- Attribute:
-
- Attribute_Label: Wshedbnd#
- 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: Wshedbnd-id
- Attribute_Definition: User-defined feature number.
- Attribute_Definition_Source: user-defined
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Whole numbers that may be user-defined.
- Distribution_Information:
-
- Distributor:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization: Center for Earth Systems Analysis Research
- Contact_Person: David McKinsey
- Contact_Position: CESAR Technical Manager
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: 5500 Campanile Drive
- City: San Diego
- State_or_Province: California
- Postal_Code: 92182-4493
- Country: USA
- Contact_Voice_Telephone: (619) 594-8042
- Contact_Facsimile_Telephone: (619) 594-4938
- Contact_Electronic_Mail_Address: mckinsey@mail.sdsu.edu
- Hours_of_Service: Monday - Friday, 9am-4pm, Pacific Standard Time
- Resource_Description: Tijuana River Watershed Boundary
- Distribution_Liability:
-
While this data have been collected for use in spatial
analysis and decision making, and for use in Geographic
Information Systems, San Diego State University, Department
of Geography, the Center for Earth Systems Analysis
Research, and El Colegio de la Frontera Norte cannot
guarantee the accuracy of the data. As with any spatial
data, issues of scale, taxonomic classification,
resolution, and precision will affect the perceived
accuracy of the data. Users are ultimately responsible for
the appropriate application of and use of these data.
- Metadata_Reference_Information:
-
- Metadata_Date: 20020919
- Metadata_Review_Date: 20020920
- Metadata_Contact:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization: Center for Earth Systems Analysis Research
- Contact_Person: David McKinsey
- Contact_Position: CESAR Technical Manager
- Contact_Address:
-
- Address_Type: Mailing and physical address
- Address: 5500 Campanile Drive
- City: San Diego
- State_or_Province: California
- Postal_Code: 92182-4493
- Country: USA
- Contact_Voice_Telephone: (619) 594-8042
- Contact_Facsimile_Telephone: (619) 594-4938
- Contact_Electronic_Mail_Address: mckinsey@mail.sdsu.edu
- Hours_of_Service: Monday - Friday, 9am-4pm, Pacific Standard Time
- Metadata_Standard_Name: FGDC CSDGM
- Metadata_Standard_Version: FGDC-STD-001-1998
Generated by mp version 2.9.8 on Wed Oct 22 13:22:07 2008