Ponding Basins

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Metadata:

Identification_Information:
Description:
Abstract:
This layer shows the ponding basins of Guam, which are mostly located in northern Guam. The features were digitzed on-screen by visual interpretation of up-to-date source layers, primarily LiDAR-derived surface raster layers and satellite imagery (2011). An older dataset created by the Water and Environmental Research Institute around 1998 was used as a starting point. Note that many ponding basins may have originated as natural features (karst sinkholes) whose contours have been altered. This dataset may not be complete. Most features were also not verified in the field.
Purpose:
To show the location of ponding basins on Guam. GIS data inventory of the Government of Guam.
Supplemental_Information:
The features were digitzed on-screen by visual interpretation of up-to-date source layers, primarily LiDAR-derived surface raster layers and satellite imagery (2011). An older dataset created by the Water and Environmental Research Institute around 1998 was used as a starting point. No distinction was made between man-made or natural. Note that this dataset may not be complete. Most features were also not verified in the field.
Time_Period_of_Content:
Currentness_Reference: ground condition
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2011
Status:
Progress: In work
Maintenance_and_Update_Frequency: As needed
Keywords:
Place:
Place_Keyword: United States Territory
Place_Keyword: Pacific Islands
Place_Keyword: Guam
Place_Keyword: Micronesia
Place_Keyword: Western Pacific
Place_Keyword: Northwestern Pacific
Theme:
Theme_Keyword_Thesaurus: sink
Theme_Keyword: ponding basins
Theme_Keyword: drainages
Theme_Keyword: drainage basin
Theme_Keyword: stormwater
Access_Constraints: none
Use_Constraints:
Data set is not for use in litigation. Bureau of Statistics & Plans (BSP) cannot assume liability for any damages or misrepresentations caused by any inaccuracies in the data or as a result of the data to be in a particular system.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Bureau of Statistics & Plans (BSP)
Contact_Person: Maria Kottermair
Contact_Position:
GIS Support for the Bureau of Statistics & Plans (BSP), Research Assistant III, WERI-UOG
Contact_Address:
Address_Type: mailing address
Address: P.O. Box 2950
City: Hagatna
State_or_Province: Guam
Postal_Code: 96932
Country: US
Contact_Voice_Telephone: 671-472-4201-3
Hours_of_Service: 8am - 5 pm +10 UTC
Contact_Electronic_Mail_Address: mariakottermair@uguam.uog.edu
Native_Data_Set_Environment: ESRI ArcMap 10.0
Citation:
Citation_Information:
Originator: Maria Kottermair
Publication_Date: March 2013
Title: Ponding Basins
Geospatial_Data_Presentation_Form: vector digital data
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: 144.57
East_Bounding_Coordinate: 145
North_Bounding_Coordinate: 13.65
South_Bounding_Coordinate: 13.19
Data_Set_Credit: Maria Kottermair, University of Guam (WERI).
Security_Information:
Security_Classification: Unclassified
Data_Quality_Information:
Logical_Consistency_Report:
Data are believed to be logically consistent. Ponding basins were identified using LiDAR (2007)-derived raster and for additional verification, WorldView2 imagery by Digital Globe from 2011. A dataset created by WERI (no metadata was available) was added (55 feature points). All points were checked against the LiDAR data for verification, two points were deleted because they did not show up in either LiDAR or satellite imagery. Few ponding basins were identified using only WorldView2 imagery (e.g., near airport and Home Depot) because were excavated after 2007, hence not existing in the LiDAR data.
Lineage:
Process_Step:
Process_Description:
Ponding basin shapefile was obtained from UOG-WERI but not metadata information was available. It is very likely that the original file was created as part of an urban runoff project by Denton et al. in 1998 (see source information).
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Water & Environmental Research Institute, University of Guam
Contact_Person: Gary Denton
Contact_Position: Professor of Environmental Toxicology
Contact_Electronic_Mail_Address: gdenton@uguam.uog.edu
Process_Step:
Process_Description:
Ponding basins were primarily identified using various LiDAR (2007)-derived raster layers. In addition, satellite imagery QuickBird (2005) and WorldView2 (2011) by Digital Globe were used for verification. No distinction was made if man-made or natural. Some ponding basins may be natural sinkholes or other natural depressions. Other than location and source, no additional attributes have been added. The dataset will be updated and expanded as part of an Guam Hydrologic Survey (GHS) project involving delineation of sinkholes and other depressions (2013-2014).
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Guam Coastal Management Program (GCMP), Bureau of Statistics & Plans
Contact_Person: Maria Kottermair
Contact_Position: GIS Support for GCMP, Research Assistant III, WERI-UOG
Contact_Electronic_Mail_Address: mariakottermair@uguam.uog.edu
Source_Information:
Source_Citation:
Citation_Information:
Originator: Denton et al.
Publication_Date: 1998
Title: Ponding basins
Online_Linkage:
<http://www.weriguam.org/reports/item/urban-runoff-in-guam-major-retention-sites-elemental-composition-and-environmental-significance.html>
Attribute_Accuracy:
Attribute_Accuracy_Report:
Some ponding basin might have been misclassified. Additional attributes other than location name (for some ponding basins only) have not been collected.
Completeness_Report:
The dataset is believed to be complete up to 2011 with minor errors. Newer development (after 2011) which may have created ponding basin are not included here.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Bureau of Statistics & Plans (BSP)
Contact_Position: GIS Manager
Contact_Address:
Address_Type: mailing address
Address: P.O. Box 2950
City: Hagatna
State_or_Province: Guam
Postal_Code: 96932
Country: United States
Contact_Voice_Telephone: 671-472-4201-3
Contact_Facsimile_Telephone: 671-477-1812
Contact_Electronic_Mail_Address: vtorres@mail.gov.gu
Hours_of_Service: 8am-5pm
Distribution_Liability:
Users must assume responsibility to determine the appropriate use for this data.
Standard_Order_Process:
Ordering_Instructions: Please ID Point of Contact indicated
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 0.002
Resource_Description: Downloadable data.
Metadata_Reference_Information:
Metadata_Date: 20130810
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Organization: Guam Coastal Management Plan, Bureau of Statistics and Plans
Contact_Person: Maria Kottermair
Contact_Position: GIS support for GCMP, University of Guam (WERI)
Contact_Electronic_Mail_Address: mariakottermair@uguamlive.uog.edu
Hours_of_Service: 8am - 5 pm local Guam Time
Contact_Address:
Address_Type:
REQUIRED: The mailing and/or physical address for the organization or individual.
City: REQUIRED: The city of the address.
State_or_Province: REQUIRED: The state or province of the address.
Postal_Code: REQUIRED: The ZIP or other postal code of the address.
Metadata_Time_Convention: local time
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Review_Date: 20131010
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: ponding_basins
Entity_Type_Definition: Point location of ponding basins of Guam
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: Coordinates defining the features.
Attribute:
Attribute_Label: Comment
Attribute:
Attribute_Label: Source
Attribute:
Attribute_Label: Latitude
Attribute:
Attribute_Label: Longitude
Attribute:
Attribute_Label: LOCATION
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Planar:
Planar_Coordinate_Information:
Planar_Distance_Units: meters
Lineage:
Generated by mp version 2.9.3 on Sun Oct 20 21:31:47 2013