Watersheds of Belize (approximated)

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: U.K. Directorate of Overseas Surveys
Publication_Date: Unknown
Title:
Watersheds of Belize (approximated)
Edition: First edition
Geospatial_Data_Presentation_Form: vector digital data
Other_Citation_Details:
The second edition of this coverage was done by the NARMAP project, to correct for instance, for the southern part of the Sibun River being placed in the Belize River watershed.
Online_Linkage: http://www.ccad.ws/documentos/mapas.html
Description:
Abstract:
According to Hipolito Contreras of the Belize Land Information Centre (personal communication 2005), the watersheds of Belize coverage is one of a few base layers developed by the U.K. Directorate of Overseas Surveys (DOS), based on the 1:50,000 OS topographic sheets and deposited directly at the Land Information Centre (LIC) at its inception in 1992. The version presented here - re-projected from Geographic Coordinate System into the original UTM-NAD27 (zone 16) projection - was made public through release of this dataset to the CCAD - the Central American Commission on Environment & Development.
Purpose:
This dataset was released to the CCAD for the purpose of providing researchers with access to certain base datasets to manipulate, for various purposes.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: unknown
Currentness_Reference:
publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Unknown
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -89.258759
East_Bounding_Coordinate: -88.074613
North_Bounding_Coordinate: 18.496675
South_Bounding_Coordinate: 15.884161
Keywords:
Theme:
Theme_Keyword: Watersheds
Theme_Keyword: drainage basins
Theme_Keyword: catchments
Theme_Keyword: cuencas
Theme_Keyword: hydrology
Theme_Keyword: hydrography
Place:
Place_Keyword: Belize
Place_Keyword: British Honduras
Place_Keyword: Central America
Place_Keyword: Latin America
Place_Keyword: Selva Maya
Place_Keyword: Mesoamerican Reef
Access_Constraints: none
Use_Constraints:
none known
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: CZMAI
Contact_Person: Emil Cherrington
Contact_Position: GIS Lab Manager
Contact_Address:
Address_Type: mailing and physical address
Address:
10 G Street
City: Washington
State_or_Province: DC
Postal_Code: 20008
Country: USA
Contact_Voice_Telephone: 223-0719
Contact_Electronic_Mail_Address: datacen@coastalzonebelize.org
Data_Set_Credit:
Please recognize the U.K. Directorate of Overseas Surveys (DOS) as the original source of this data.
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 9.0.0.535
Back to Top
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
There are several instances of streams / rivers crossing watershed boundaries, prompting an update of this coverage using NASA's 90m SRTM data.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Because of projectional difficulties, there is a displacement of about 120-150m east.
Lineage:
Process_Step:
Process_Description:
The data provided by CCAD was downloaded and re-projected from the Geographic Coordinate System (GCS) into North America Datum (NAD) 1927-Zone 16. Polygons were also merged to allow for only one polygon per watershed. (The original GCS data also indicates various features within watersheds as distinct polygons.)
Process_Date: 2004
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: World Resources Institute
Contact_Position: GIS Lab Manager
Contact_Address:
Address_Type: mailing and physical address
Address:
10 G Street NE
City: Washington
State_or_Province: Dc
Postal_Code: 20008
Country: USA
Contact_Voice_Telephone: 202-729-7600
Contact_Facsimile_Telephone: 202-729-7775
Contact_Electronic_Mail_Address: gislab@wri.org
Back to Top
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: 32
Back to Top
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 16
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -87.000000
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: 0.000512
Ordinate_Resolution: 0.000512
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.400000
Denominator_of_Flattening_Ratio: 294.978698
Back to Top
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: watersheds_utm
Attribute:
Attribute_Label: FID
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:
Coordinates defining the features.
Attribute:
Attribute_Label: AREA
Attribute:
Attribute_Label: PERIMETER
Attribute:
Attribute_Label: ACRES
Attribute:
Attribute_Label: HECTARES
Attribute:
Attribute_Label: WATERSHED
Back to Top
Distribution_Information:
Resource_Description: Made available on the Belize Coastal Data CD (version 2).
Distribution_Liability:
Although this data set has been released by CCAD, CZMAI and the World Resources Institute, no warranty is expressed or implied.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 1.349
Technical_Prerequisites:
The data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.x software to manipulate the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing data.
Back to Top
Metadata_Reference_Information:
Metadata_Date: 20050516
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Coastal Zone Management Institute (Belize)
Contact_Person: Emil A. Cherrington
Contact_Position: Data Analyst
Contact_Address:
Address_Type: mailing address
Address:
P.O. Box 1884
City: Belize City
State_or_Province: Belize
Postal_Code: 0000
Country: Belize
Contact_Voice_Telephone: 501-223-5739
Contact_Facsimile_Telephone: 501-223-5738
Contact_Electronic_Mail_Address: datacen@coastalzonebelize.org
Contact_Electronic_Mail_Address: czmbze@btl.net
Contact_Electronic_Mail_Address: ec101280@u.washington.edu
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
Back to Top