Groundwater Vulnerability to Contamination (DRASTIC) - Nebraska

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Conservation & Survey Division, University of Nebraska - Lincoln (CSD)
Publication_Date: 1996
Title:
Groundwater Vulnerability to Contamination (DRASTIC) - Nebraska
Edition: none
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: none
Issue_Identification: none
Publication_Information:
Publication_Place: Lincoln, Nebraska
Publisher: Conservation and Survey Division, University of Nebraska - Lincoln
Other_Citation_Details:
none
Online_Linkage: groundwater-vulnerability-to-contamination-using-the-drastic-method
Description:
Abstract:
Index polygons of pollution potential. Based on an ERDAS study that utilized seven layers of spatial data to build an index value of the potential for groundwater pollution from a surface contaminant. The seven layers are (D)epth to water, (R)echarge rate, (A)quifer characteristics, (S)oils, (T)opography, (I)mpact of vadose zone and hydraulic (C)onductivity. The layers can be weighted differently by different researchers but this index is the published map from CSD.
Purpose:
Summarize the impact of surface contaminants to groundwater contamination by applying the DRASTIC model.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1991
Currentness_Reference:
ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -98.486349
East_Bounding_Coordinate: -96.933301
North_Bounding_Coordinate: 41.292015
South_Bounding_Coordinate: 40.417711
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: ground water
Theme_Keyword: geoscientificInformation
Theme_Keyword: environment
Theme_Keyword: inlandWaters
Theme_Keyword: farming
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Nebraska
Access_Constraints: None, available for sale.
Use_Constraints:
None, but the following should be included in citations: "The Conservation and Survey Division has produced this product using what is thought to be the most reliable information available or reproduced the material as provided. The detail and precision of the interpretations made are according to accepted professional standards and are dependant upon the techniques, hardware, and/or software utilized."
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Nebraska Department of Natural Resources
Contact_Position: GIS Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address:
301 Centennial Mall South, P.O. Box 94676
City: Lincoln
State_or_Province: NE
Postal_Code: 68509-4676
Contact_Voice_Telephone: 402-471-2363
Contact_Facsimile_Telephone: 402-471-2900
Contact_Electronic_Mail_Address: dnr.gis@nebraska.gov
Hours_of_Service: 8:00 - 5:00 CST
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770
Back to Top
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The original science was done using a raster-based image processor (ERDAS). The input layers were from several sources, all based on 1x2 degree topographic sheets. This data had a cell-size of about 100 meters, and is suitable for generalized planning not site-specific decisions. The ArcInfo command LATTICEPOLY was used to create this dataset.
Logical_Consistency_Report:
Edgematched and adjusted as needed.
Completeness_Report:
Coverage is state-wide & updates are not planned
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: CSD
Publication_Date: 1991
Title:
DRASTIC Pollution Index
Edition: none
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: none
Issue_Identification: none
Publication_Information:
Publication_Place: Lincoln, Nebraska
Publisher: CSD
Other_Citation_Details:
none
Source_Scale_Denominator: 250000
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1991
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
LUM31
Source_Contribution:
none
Process_Step:
Process_Description:
ERDAS was used to subset the data into 1x1 degree blocks in SVF format. Each block was converted to an ARC lattice using the ERDASSVF command. The several lattices were merged together, converted to polygons and projected to the CSD standard projection.
Source_Used_Citation_Abbreviation:
none
Process_Date: 1994
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Nebraska Department of Natural Resources
Contact_Position: GIS Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address:
301 Centanninal Mall South, P.O. Box 94676
City: Lincoln
State_or_Province: NE
Postal_Code: 68509-4676
Contact_Voice_Telephone: 402-471-2363
Contact_Facsimile_Telephone: 402-471-2900
Contact_Electronic_Mail_Address: gis@dnr.ne.gov
Hours_of_Service: 8:00 - 5:00 CST
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
C:\DOCUME~1\gfpc\LOCALS~1\Temp\xml52.tmp
Back to Top
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference_Method:
Vector coverage across the state of Nebraska
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: 1795
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Label point
Point_and_Vector_Object_Count: 926
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 925
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 4
Back to Top
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Transverse Mercator
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -99.000000
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: 160.934
Ordinate_Resolution: 201.168
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: D_Clarke_1866
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: drastic.pat
Entity_Type_Definition:
Polygons of possible pollution potential. The higher the index, the greater chance of groundwater pollution from a surface contaminant.
Entity_Type_Definition_Source:
CSD
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_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: GROUP
Attribute_Definition:
Index of pollution potential
Attribute_Definition_Source:
CSD
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 9
Attribute_Units_of_Measure: none
Overview_Description:
Entity_and_Attribute_Overview:
Polygons labeled by index value
Entity_and_Attribute_Detail_Citation:
Separate index values for each layer were decided. A composite index was determined, and reclassified to eight values. This data is converted from the original raster-based product.
Back to Top
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Nebraska Department of Natural Resources
Contact_Position: GIS Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address:
301 Centennial Mall South, P.O. Box 94676
City: Lincoln
State_or_Province: NE
Postal_Code: 68509-4676
Contact_Voice_Telephone: 402-471-2363
Contact_Facsimile_Telephone: 402-471-2900
Contact_Electronic_Mail_Address: dnr.gis@nebraska.gov
Hours_of_Service: 8:00 - 5:00 CST
Resource_Description: Groundwater pollution potential index
Distribution_Liability:
none
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE (ARC/INFO EXPORT)
Format_Version_Number: 6.0 Single Precision, After the data was put in ArcExport format we ran PKZIP and ZIP2EXE. We can produce other formats on request.
Format_Information_Content:
Spatial and attribute information
File_Decompression_Technique: Pkzipped and exported into and executable
Transfer_Size: 0.486
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Access_Instructions:
Access the data through our web site by url http://dnr.ne.gov. Enter the Data Bank Option; Enter the Spatial/GIS option; Enter Groundwater Vulnerability to Contamination Coverage, Select the ARC/EXPORT option.
Online_Computer_and_Operating_System:
Varies
Offline_Option:
Offline_Media: CD-ROM
Recording_Capacity:
Recording_Density: 700
Recording_Density_Units: megabytes
Fees: per current price
Ordering_Instructions:
Write or FAX with request. Letterhead preferred
Turnaround: varies with media
Custom_Order_Process:
Written request, billed as Time & Materials
Technical_Prerequisites:
(optional):Must be able to process ArcInfo export format files
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1996
Back to Top
Metadata_Reference_Information:
Metadata_Date: 20080821
Metadata_Review_Date: 1997
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Nebraska Department of Natural Resources
Contact_Position: GIS Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address:
301 Centennial Mall South, P.O. Box 94676
City: Lincoln
State_or_Province: NE
Postal_Code: 68509-4676
Contact_Voice_Telephone: 402-471-2363
Contact_Facsimile_Telephone: 402-471-2900
Contact_Electronic_Mail_Address: dnr.gis@nebraska.gov
Hours_of_Service: 8:00 - 5:00 CST
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: none
Metadata_Use_Constraints:
none
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
Back to Top