1. Titles and Authors

Litke, D. W., 2001, Historical water-quality data for the High 
Plains Regional Ground-Water Study Area in Colorado, Kansas, 
Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming, 
1930-98: U.S. Geological Survey Water-Resources Investigations 
Report 00-4254, 65 p.

2. Overview

This CD is a companion to WRIR 00-4254, and includes the data base 
used for the report. The data are provided in MS Access format and 
in ASCII flat file format.

3. CD Contents and Organization

Root Directory
   1_README.doc: CD contents listed in MS Word format.
   1_README.txt: CD contents listed in ASCII format.

Data Directory
     Access Directory
        data.mdb: Contains the data base in MS Access 2000 format.
        access_read_me.doc: a help file in MS Word format 
describing the tables in the MS Access data base.
        access_read_me.txt: A help file in ASCII format describing 
the tables in the MS Access data base.

     Ascii Directory: 
          Files in this directory are tab-delimited ASCII files.
        
        agencies.txt: Agencies whose data is contained in the data 
base. Each water-quality result is linked to an AGENCY 
using the AGENCY-CODE.

        datasource.txt: Agencies that transmitted data to the data 
base. Some data sources supplied data for multiple 
agencies. Each site in the data base is linked to a 
DATASOURCE using the DATASOURCE code.

        geohydrology.txt: Information about the aquifers 
penetrated by wells. Some wells penetrate multiple 
aquifers; a sequence number is used to code multiple 
aquifers for a well. Relatively few wells had 
geohydrology information available. The GEOHYDROLOGY 
table is linked to the SITE table using the site ID.

        openings.txt: Information about the open intervals in the 
well casings. Some wells had multiple open intervals; a 
sequence number is used to code multiple well opening 
intervals. Relatively few wells had opening information 
available. The OPENINGS table is linked to the SITE 
table using the site ID.

        parameter.txt: Information defining each result or 
measurement made at a well. The PARAMETER table is 
linked to the QW_RESULT table using the Ppcode.

        projects.txt: Information about projects under which data 
were collected. Relatively few results had project 
information. The PROJECTS table is linked to the 
QW_RESULT table using the ProjectID.

        qw_result.txt: This is the primary and largest table in 
the data base. It contains each result or measurement 
made at a well site. It is linked to the SITE table 
using the site ID, and it is linked to the PARAMETER 
table using the Ppcode.

        site.txt: This is the second largest table in the data 
base, and contains information about each well site. It 
is linked to the QW_RESULT, OPENINGS, and GEOHYDROLOGY 
table using the site ID, and to the DATASOURCE table 
using the DataSourceCode.

    The remaining tables are lookup tables:

        tblAquiferType: Meaning of aquifer type codes used in the 
SITE table.

        tblCasingMaterial: Meaning of casing material codes used 
in the SITE table.

        tblCoordinateAccuracy: Meaning of coordinate accuracy 
codes used in the SITE table.

        tblCounties: Meaning of the county codes used in the SITE 
table.

        tblDataQuality: Meaning of the data quality codes used in 
the QW_RESULT table.

        tblGroundWaterSiteType: Meaning of the ground water site 
type codes used in the SITE table.

        tblGeoHydrologicUnits: Meaning of the aquifer codes used 
in the SITE table, and the geohydroloic unit codes used 
in the GEOHYDROLOGY table.

        tblSiteUse: Meaning of the site use codes in the SITE 
table.

        tblValueRemarks: Meaning of the value remark codes used in 
the QW_RESULT table.

        tblWaterUse: Meaning of the water use codes used in the 
SITE table.

      
4. Disclaimer

This Compact Disc-Read Only Memory (CD-ROM) publication was 
prepared by an agency of the United States Government. Neither the 
United States Government nor any agency thereof nor any of their 
employees make any warranty, expressed or implied, or assumes any 
legal liability or responsibility for the accuracy, completeness, 
or usefulness of any information, apparatus, product, or process 
disclosed in this report or represents that its use would not 
infringe privately owned rights. Reference therein to any specific 
commercial product, process, or service by trade name, trademark, 
manufacturer, or otherwise does not necessarily constitute or 
imply its endorsement, recommendation, or favoring by the United 
States Government or any agency thereof.

Although all data and software on this CD-ROM have been used by 
the USGS, no warranty, expressed or implied, is made by the USGS 
as to the accuracy of the data and related materials and/or the 
functioning of the software. The act of distribution shall not 
constitute any such warranty, and no responsibility is assumed by 
the USGS in the use of these data, software, or related materials
5. Software Installation

No software are included on this disk.

6. System Requirements

The data base files on this disk are quite large, and require a 
computer with at least 256 MB of ram and disk space on a hard 
drive of at least 500 MB.

