readme_fgdc.txt
Please read this document first before viewing the contents of this folder.


Introduction
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This folder contains text files of the data used in U.S. Geological
Survey (USGS) Scientific Investigations Report 2008-5083, "Evaluation of 
Acoustic Doppler Velocity Meters to Quantify Flow from Comal Springs and 
San Marcos Springs, Texas," by Marcus O. Gary, Robin H. Gary, and William 
H. Asquith. These data will remain provisional because of the nature of the 
study.

USGS Scientific Investigations Report 2008-5083 was prepared by the USGS in 
cooperation with the Edwards Aquifer Authority. 


Folder Information
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The overall layout of the folder is as follows:

\readme_fgdc.txt
	this file

\ASCII_text
    \data_daily.txt
	tab delimited text file
	Contains the daily value statistics (maximum, minimum, and mean) for 
	each parameter collected at each site during the period of deployment. 
	Null values are reported when data were insufficient to calculate 
	daily value statistics.  Values in the parameter_cd field are described 
	in the lut_parameters.txt file.  Field names are described as follows:
		site_no:  	USGS site number, links data to site information
				in sites.txt
		date:		Date in MM/DD/YYYY (month/day/year) format
		dd_index:	Unique identifier for parameter_cd and dd_desc
		parameter_cd:	NWIS parameter code, described in lut_parameters.txt
		dd_desc:	Data descriptor, describes additional information
				about the parameter
		stat_cd:	Statistic code, described in lut_dailystat.txt
		value:		Daily value
		precision:	Number of significant digits

    \data_instantaneous.txt
	tab delimited text file
	Contains the unit values for each parameter collected at each site during 
	the period of deployment. Values in the parameter_cd field are described in 
	the lut_parameters.txt file. Field names are described as follows:
		site_no:  	USGS site number, links data to site information
				in sites.txt
		date_time:	Date and time in MM/DD/YYYY HH:MM (month/day/year
				hour:minute) format
		TZCD:		Time zone code (CDT: Central Daylight time; CST: 
				Central Standard time)
		dd_index:	Unique identifier for parameter_cd and dd_desc
		parameter_cd:	NWIS parameter code, described in lut_parameters.txt
		dd_desc:	Data descriptor, describes additional information
				about the parameter
		value:		Unit value
		precision:	Number of significant digits

    \lut_dailystat.txt
	tab delimited text file
	Contains statistics codes and descriptions for daily data.  Field names are 
	described as follows:
		stat_cd:	Statistic code
		stat_desc:	Description of statistic code	

    \lut_parameters.txt
	tab delimited text file
	Contains parameter codes and descriptions for parameters used in the
	report.  Field names are described as follows:
		parameter_cd:	NWIS parameter code
		description:	Description of parameter with units when applicable

    \sites.txt
	tab delimited text file
	Contains site information for sites presented in the report. Field names are 
	described as follows:
		site_no:	USGS site number, links to data in data_daily.txt and 
				data_instantaneous.txt
		site_nm:	Name of site or State well number
		dec_lat_va:	Latitude in decimal degrees, in geographic
				projection, North American Datum of 1983 (NAD 83)
		dec_long_va:	Longitude in decimal degrees, in geographic
				projection, North American Datum of 1983 (NAD 83)



Disclaimer information
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This folder was prepared by an agency of the U.S. Government.  Neither the U.S. 
Government nor any agency thereof, nor any of their employees makes 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 constitute or imply its endorsement, recommendation, or favoring by the U.S. 
Government or any agency thereof.

Although all data and software published in this folder 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 the USGS in the use of 
these data, software, or related materials assumes no responsibility.

For additional information, contact:

Director, Texas Water Science Center 
U.S. Geological Survey
8027 Exchange Drive
Austin, Texas 78754-4733

E-mail: dc_tx@usgs.gov