Aquifer recharge zones

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Metadata:

Identification_Information:
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Danko Taboroši
Contact_Organization: Island Research & Education Initiative (IREI)
Contact_Position: Director
Contact_Electronic_Mail_Address: taborosi@islandresearch.org
Citation:
Citation_Information:
Originator: Island Research & Education Initiative
Publication_Date: 2013
Title: Aquifer recharge zones
Online_Linkage: www.hydroguam.net
Keywords:
Theme:
Theme_Keyword: recharge
Theme_Keyword: aquifer
Theme_Keyword: Northern Guam Lens Aquifer
Theme_Keyword: NGLA
Place:
Place_Keyword: Guam
Place_Keyword: U.S. Territory
Place_Keyword: Mariana Islands
Place_Keyword: Micronesia
Place_Keyword: Northwest Pacific
Place_Keyword: Western Pacific
Place_Keyword: Pacific Islands
Description:
Abstract:
The surface of the aquifer is considered to provide autogenic recharge (because limestone units of the aquifer itself receive direct rainfall and convey it downward). Adjacent non-limestone surfaces provide allogenic recharge (because they capture rainwater and conduct it to lower-lying limestone areas via surface drainage networks guided by land surface topography). The boundaries are based on information from USGS Geologic Map, 2007 LiDAR data (JALBTCX), and watershed boundaries by Natural Resources Conservation Service (NRCS).
Purpose:
This dataset shows the extent of areas that capture rainwater that goes to recharge the Northern Guam Lens Aquifer (NGLA). This GIS dataset was created for the purpose of the Digital Atlas of Northern Guam (<http://north.hydroguam.net>).
Supplemental_Information:
The surface of the aquifer is considered to provide autogenic recharge (because limestone units of the aquifer itself receive direct rainfall and convey it downward). Adjacent non-limestone surfaces provide allogenic recharge (because they capture rainwater and conduct it to lower-lying limestone areas via surface drainage networks guided by land surface topography). The boundaries are based on information from USGS Geologic Map, 2007 LiDAR data (JALBTCX), and watershed boundaries by Natural Resources Conservation Service (NRCS).
Use_Constraints:
Data set is for planning purpose only and not for use in litigation. The Island Research & Education Initiative (IREI) 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.
Data_Set_Credit: Danko Taboroši and Maria Kottermair
Data_Quality_Information:
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Title: USGS Geologic Map of Guam
Publication_Date: 2008
Originator: Siegrist, H.G. and Reagan, M.
Source_Information:
Source_Citation:
Citation_Information:
Title: LiDAR-derived hillshade
Originator: JALBTX
Publication_Date: 2007
Other_Citation_Details: The data was collected by JALBTX for the Government of Guam
Source_Information:
Source_Citation:
Citation_Information:
Title: Watershed boundaries
Originator: Natural Resources Conservation Service (NRCS)
Process_Step:
Process_Description:
A shapefile of the outline of Guam was used as a starting point. The file was then 'cut' to create the aquifer recharge zones which are based on geologic and topographic information. Whenever possible boundaries from the source layers were traced.
Process_Date: 2013
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Island Research & Education Initiative (IREI)
Contact_Electronic_Mail_Address: irei@islandresearch.org
Attribute_Accuracy:
Attribute_Accuracy_Report: An attribute accuracy assessment had not been conducted.
Logical_Consistency_Report:
The data is beleive to be logically consistent although no test were performed.
Completeness_Report: This data set is considered complete.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Presently, there are no plans to conduct an accuracy assessment. Updates may be provided at a later date as more ground-truthing information becomes available.
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: recharge_zones
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: Type
Attribute:
Attribute_Label: Area_ha
Attribute:
Attribute_Label: Area_mi
Attribute:
Attribute_Label: Area_ac
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.
Metadata_Reference_Information:
Metadata_Date: 20131012
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Contact:
Contact_Information:
Contact_Electronic_Mail_Address: irei@islandresearch.org
Contact_Organization_Primary:
Contact_Organization: Island Research & Education Initiative (IREI)
Spatial_Data_Organization_Information:
Point_and_Vector_Object_Information:
Lineage:
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Planar_Coordinate_Information:
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Generated by mp version 2.9.3 on Sun Oct 20 21:32:20 2013