thick_utm

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
Conservation & Survey Division, University of Nebraska - Lincoln (CSD)
Publication_Date: 1996
Title: thick_utm
Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Lincoln, Nebraska
Publisher:
Conservation and Survey Division, University of Nebraska-Lincoln (CSD). Lincoln
Online_Linkage: <http://snr.unl.edu/Data/NebrGISwater.asp#ThicknessPrinAquifer>
Description:
Abstract:
The thickness of the principal aquifer is a series of contour lines showing the estimated thickness of the saturated sediments that serve as the source aquifer for domestic and irrigation wells. It was digitized from 1:250,000 paper maps published in 1980 and has been used as the 'normal' thickness of the aquifer. The principal CSD geoscientist was Vern Souders. Areas where the principal aquifer is 'absent or very thin' are coded as polygons with a value of 0 thickness. These are areas of impermeable rock or clay. Some of the areas are fractured and may yield considerable water if the well hits the fracture. Thickness of the principal aquifer is difficult to define when a water-producing well has a very low yield. Most of Nebraska is underlain by the Ogalala formations of saturated, permeable, and porous strata that yields very large quantities of water. But many areas do not yield much, or are too spotty to be useful. This database attempts to summarize this relationship.
Purpose:
To quantify and summarize the concept of "Thickness of the Principal Aquifer"
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1980
Currentness_Reference:
publication date of paper maps which were digitized to create this digital product
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -104.213103
East_Bounding_Coordinate: -95.129807
North_Bounding_Coordinate: 43.111698
South_Bounding_Coordinate: 39.893332
Keywords:
Theme:
Theme_Keyword_Thesaurus: ESRI
Theme_Keyword: geoscientificInformation
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: Groundwater
Theme_Keyword: Aquifer
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Nebraska
Access_Constraints: None
Use_Constraints:
The data are the intellectual property of the University of Nebraska. The data may not be redistributed without permission to do so by the person(s) or unit listed as the Originator(s). In any product, including data, publications, or presentations, generated using these data, it is required that the Conservation and Survey Division, University of Nebraska - Lincoln be acknowledged. Please include the following source citation: "Thickness of the Principal Aquifer, digitized from 1:250,000-Scale 1980 paper maps, by the University of Nebraska-Lincoln Conservation and Survey Division, ArcInfo Export File, ver. 1.0, copyright 2005."
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Conservation and Survey Division, University of Nebraska-Lincoln (CSD) Division
Contact_Position: GIS Coordinator
Contact_Address:
Address_Type: mailing address
Address: Hardin Hall, 3310 Holdrege, University of Nebraska-Lincoln
City: Lincoln
State_or_Province: NE
Postal_Code: 68583-0982
Country: USA
Contact_Voice_Telephone: 402-472-9192
Contact_Facsimile_Telephone: 402-472-2946
Contact_Electronic_Mail_Address: gismanager@unl.edu
Hours_of_Service: 0900 - 1600 Central Time
Contact_Instructions: Business is conducted Monday-Friday, except holidays
Browse_Graphic:
Browse_Graphic_File_Name: <http://snr.unl.edu/images/GISThumbnails/tn_wtthick.jpg>
Browse_Graphic_File_Description: Thickness of the Principle Aquifer
Browse_Graphic_File_Type: JPEG
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Digitized from paper maps published at 1:250,000 scale. The thickness contours were interpreted and drawn using well data from CSD testholes, registered wells, and other sources. They follow the standard of being generalized to 1/2 of the vertical interval. A confidence diagram included in the source mapping mirrors the density of wells to examine. Confidence is high near streams and where high capacity irrigation wells are plentiful. Confidence is lower where wells are sparse or there are considerable glacial till deposits, as the yields are unpredictable from such materials.
Logical_Consistency_Report:
The coverage is topologically correct for both Arc and polygon features
Completeness_Report: Coverage is state-wide and complete
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
University of Nebraska-Lincoln Conservation and Survey Division (CSD)
Publication_Date: 1980
Title: Thickness of Principal Aquifer
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Lincoln, Nebraska
Publisher: CSD
Online_Linkage: <http://snrs.unl.edu/products>
Source_Scale_Denominator: 250,000
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1980
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: GM-56
Source_Contribution: These maps were digitized to create this digital data set.
Process_Step:
Process_Description:
Paper 1x2 degree sheets were digitized using standard ArcInfo techniques. Each arc was given the appropriate thickness value. Boundary arcs enclosing the state were added, resulting in a topologically clean polygon coverage Each polygon was encoded with the thickness value and 'aquifer thin or absent' polygons. They were edgematched, appended, and then dissolved on the thickness value. 'Nodata' values are assigned to the state border arcs. In final version of data, features are represented as lines.
Source_Used_Citation_Abbreviation: GM-56
Process_Date: 1995
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Conservation & Survey Division, University of Nebraska-Lincoln (CSD)
Contact_Position: GIS Manager
Contact_Address:
Address_Type: mailing address
Address: Hardin Hall, 3310 Holdrege, University of Nebraska-Lincoln
City: Lincoln
State_or_Province: Nebraska
Postal_Code: 68583-0982
Country: USA
Contact_Voice_Telephone: 402-472-9192
Contact_Facsimile_Telephone: 402-472-2946
Contact_Electronic_Mail_Address: GISmanager@unl.edu
Hours_of_Service: 0900 - 1700 Central Time
Contact_Instructions: Business is conducted Monday-Friday, except holidays
Process_Step:
Process_Description:
Metadata were updated and edited. Adonna Fleming and Margaret Mering, both of University of Nebraska-Lincoln Libraries, assisted in the preparation of metadata.
Process_Date: 20050928
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Conservation & Survey Division, University of Nebraska-Lincoln (CSD)
Contact_Person: Rachel Simpson
Contact_Position: Research Assistant Professor
Contact_Address:
Address_Type: mailing address
Address: Hardin Hall, 3310 Holdrege, University of Nebraska-Lincoln
City: Lincoln
State_or_Province: Nebraska
Postal_Code: 68583-0982
Country: USA
Contact_Voice_Telephone: 402-472-9192
Contact_Facsimile_Telephone: 402-472-2946
Contact_Electronic_Mail_Address: rsimpson2@unl.edu
Hours_of_Service: 0900 - 1700 Central Time
Contact_Instructions: Contact by e-mail recommended.
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: S:\final_metadata_only\thick_stp\Thick_stp.xml
Process_Date: 20090128
Process_Time: 14103600
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\DOCUME~1\SNR-JN~1\LOCALS~1\Temp\xml238.tmp
Process_Date: 20090128
Process_Time: 14200100
Process_Step:
Process_Description: Dataset copied.
Source_Used_Citation_Abbreviation:
Process_Date: 20090128
Process_Time: 14204700
Process_Step:
Process_Description: Dataset moved.
Source_Used_Citation_Abbreviation: S:\Process\stp\thick\thick_utm
Process_Date: 20090128
Process_Time: 14210300
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 635
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Complete chain
Point_and_Vector_Object_Count: 653
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 1563
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 14
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: 0.000000
Ordinate_Resolution: 0.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: thick_utm
Entity_Type_Definition: Thickness of the principal aquifer.
Entity_Type_Definition_Source: UNL-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: LENGTH
Attribute_Definition: Software generated length of the contour lines.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Software generated length of the contour lines.
Attribute:
Attribute_Label: THICK
Attribute_Definition: Thickness of the principal aquifer.
Attribute_Definition_Source: UNL-CSD
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1000
Attribute_Units_of_Measure: Feet
Overview_Description:
Entity_and_Attribute_Overview:
Attribute field 'THICK' is a value of a contour line referring to the thickness of the aquifer. Arcs of 'no data' value are not plotted. Arcs of '0' thickness are areas of where the aquifer is very thin or absent. All others have estimated thickness in feet.
Entity_and_Attribute_Detail_Citation: CSD
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Conservation and Survey Division, University of Nebraska-Lincoln (CSD)
Contact_Position: GIS Coordinator
Contact_Address:
Address_Type: mailing address
Address: Hardin Hall, 3310 Holdrege, University of Nebraska-Lincoln
City: Lincoln
State_or_Province: NE
Postal_Code: 68583-0982
Country: USA
Contact_Voice_Telephone: 402-472-9192
Contact_Facsimile_Telephone: 402-472-2946
Contact_Electronic_Mail_Address: gismanager@unl.edu
Hours_of_Service: 0900 - 1600 Central Time
Resource_Description: Thickness of the principal aquifer.
Distribution_Liability:
The Conservation and Survey Division, University of Nebraska-Lincoln 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 dependent upon the techicques, hardware, and/or software utilized. The user must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data and other conditions specific to certain data. No warranty expressed or implied is made by the University of Nebraska regarding the positional or attribute accuracy or utility of this information. The act of distribution shall not constitute any such warranty and no responsibility is assumed by the University of Nebraska in the use of the data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE
File_Decompression_Technique: No compression applied
Transfer_Size: 3,901,952 bytes
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://snr.unl.edu/Data/NebrGIS.asp>
Offline_Option:
Offline_Media: CD-ROM
Recording_Format: ISO 9660
Compatibility_Information: ASCII standards (lrecl=80 block=8000)
Fees:
No fee for online downloads. Fees may apply in other cases depending on media and processing time.
Ordering_Instructions:
E-mail, FAX or write with request. Letterhead preferred. preferred
Turnaround: varies with media
Custom_Order_Process: Written request, billed as Time & Materials
Technical_Prerequisites:
Must be able to process ArcInfo export format files
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1996
Metadata_Reference_Information:
Metadata_Date: 20090225
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Conservation and Survey Division, University of Nebraska-Lincoln (CSD)
Contact_Person: REQUIRED: The person responsible for the metadata information.
Contact_Position: GIS Coordinator
Contact_Address:
Address_Type: mailing address
Address: Hardin Hall, 3310 Holdrege, University of Nebraska-Lincoln
City: Lincoln
State_or_Province: NE
Postal_Code: 68583-0982
Country: USA
Contact_Voice_Telephone: 402-472-9192
Contact_Facsimile_Telephone: 402-472-2946
Contact_Electronic_Mail_Address: gismanager@unl.edu
Hours_of_Service: 0900 - 1600 Central Time
Contact_Instructions: Business is conducted Monday-Friday, except holidays
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:
This metadata file is intended to accompany the geospatial data set identified and received from the Conservation and Survey Division, University of Nebraska-Lincoln. It is not to be altered or summarized. CSD does not encourage secondary distribution of data. If this geospatial data set was received from anyone besides CSD, this metadata file and the geospatial data set it describes may lack integrity.
Generated by mp on Thu Dec 5 13:28:58 1996
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.6 on Wed Feb 25 12:38:34 2009