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#  DATASET_NAME: texas.txt	
#  DATASET_DESCRIPTION:	Text file describing the analysis process, sorted by state.
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#  REPORT TITLE: 
#     Estimated Withdrawals from Stream-Valley Aquifers and Refined 
#     Estimated Withdrawals from Selected Aquifers in the United 
#     States, 2000
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#  REPORT SERIES/NUMBER: Scientific Investigations Report 2008-5003 
#  REPORT URL: URL: http://pubs.er.usgs.gov/usgspubs/sir/sir20085003
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#  NAWQA STUDY:	Alluvial Aquifers
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#  METADATA DATE:   August 28, 2008 
#  METADATA CONTACT: Pierre Sargent, Molly Maupin, Stephen Hinkl
#                    U.S. Geological Survey
#                    3535 South Sherwood Forest Blvd., Suite 120
#                    Baton Rouge, LA 70816
#	 	     
#                    voice: 225-298-5481 x 3211
#                    fax:   225-298-5490
#                    email: psargent@usgs.gov
#
#  SECONDARY CONTACT:  Molly Maupin
#                      U.S. Geological Survey
#                      230 Collins Road
#                      Boise, ID 83702
#
#                    	voice: 208-387-1307
#                    	fax:   208-387-1372
#                    	email: mamaupin@usgs.gov
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#  TERTIARY CONTACT:   Stephen Hinkle
#                      U.S. Geological Survey
#                      2130 SW %th Ave
#                      Portland, OR 97201
#	
#                      voice: 503-251-3237
#                      fax:   503-251-3470
#                      email: srhinkle@usgs.gov
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#  ABSTRACT:  
#     The report authors maintained notes detailing the process that 
#     was used to do the analysis for this report. The pertinent 
#     notes were included in the appendix of the report. 
#     Some details that did not warrant publication reside 
#     in these notes. These notes are being archived in the 
#     event that they might be of use to future water-use 
#     efforts aimed at stream-valley aquifers.
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#  Basic documentation of dataset elements and history
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# Related_Spatial_and_Tabular_Data_Sets:  
#     There are related text files of notes for all 25 states/territories in this study
#     arizona.txt
#     arkansas.txt
#     colorado.txt
#     illinois.txt
#     indiana.txt
#     kansas.txt
#     kentucky.txt
#     louisiana.txt
#     missouri.txt
#     montana.txt
#     nebraska.txt
#     new_mexico.txt
#     new_york.txt
#     new_jersey.txt
#     north_dakota.txt
#     ohio.txt
#     oklahoma.txt
#     pennsylvania.txt
#     puerto_rico.txt
#     south_dakota.txt
#     tennessee.txt
#     texas.txt
#     utah.txt
#     west_virginia.txt
#     wyoming.txt
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#  METADATA Basic documentation of dataset elements:
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#     DATA DESCRIPTION: 
#         Text files describing the analysis process, one text file 
#         for each state
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#     DATA TYPES: ascii text
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#     DATA SOURCES: notes taken during data analysis and from correspondance
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TEXAS DOCUMENTATION AND NOTES
Thursday, August 28, 2008

      Texas law allows property owners an absolute right of capture to the groundwater under their property. Any property owner may pump as much water as needed, generally without incurring any responsibility even if other property owners are affected. However, when water in the ground flows in a well-defined subsurface channel like an underground river, it falls under state jurisdiction. To date, the Texas Water Development Board (TWDB), the state agency with jurisdiction over water use, has been unsuccessful in attempts to get underground water sources legally designated as an underground river. 
      
      Most water use reported by the USGS is collected by the Texas Water Development Board (TWDB) (cooperator). The definitions used by the TWDB differ slightly in most instances from those used by the USGS. Differences are resolved by requesting specific reports. TWDB has a database that maintains county and river basin (state-defined) specifics regarding withdrawal (source) and consumptive use data (used). TWDB tabulates all their water-use data by consumptive use (used). Definitions that differ between TWDB and USGS include Municipal (Public Supply), Industrial (Manufacturing), and Power (Thermoelectric). 

      In 2000 total (ground and surface) water use in Texas approached 25,000 Mgal/d. Ground-water withdrawals (8,470 Mgal/d) represented 34 percent of total withdrawals. Ground-water withdrawals in the categories of public supply, industrial, and irrigation are 94.5 % of total ground-water withdrawals (8,004 Mgal/d). 
      
      In Texas USGS fresh ground-water withdrawals estimates for public-supply, industrial and irrigation uses that were assigned to alluvial aquifers totaled only 12.6 Mgal/d or 0.15  percent of all fresh ground-water withdrawals for all uses.  Fresh ground-water withdrawals for the three uses assigned to other totaled 310 Mgal/d or approximately four percent of total fresh ground-water withdrawals. Nearly all of the pumpage from the alluvial aquifers was used for irrigation purposes and attributed to the Brazos stream-valley aquifer (as per TX WU Specialist). Along the Red and the North Fork of the Red Rivers, water is withdrawn directly out of the river and not from the adjacent alluvial deposits (oral communication, Texas Water Use Specialist, Dana Barbie, 2005).    
      
      The Bone Spring Limestone is the major source of water assigned in the other category (204.42 Mgal/d). The second and third sources are the Dockum Group (27.16 Mgal/d) and the Other Undifferentiated (26.21 Mgal/d), respectively.  The remaining ten water bearing units are a collection of specific formations, like the Marble Falls Limestone and generic units, like Igneous Rocks. [note: these other values have changed somewhat; see the SIR, as it has the most up-to-date values.]
      
 
