#  Begin METADATA documentation
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#  DATASET_NAME: oklahoma.txt	
#  DATASET_DESCRIPTION:	Text file describing the analysis process, sorted by state.
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#  DATA_SET FORMAT: ascii-text	
#  DATA_SET URL: 
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#  REPORT TITLE: 
#     Estimated Withdrawals from Stream-Valley Aquifers and Refined 
#     Estimated Withdrawals from Selected Aquifers in the United 
#     States, 2000
#                             
#  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
#
#  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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#  METADATA Data Description:  
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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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#  End METADATA documentation
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OKLAHOMA

An annual water use mail survey is used to collect point source withdrawal data for the category of public supply, self-supplied industry, and irrigation by the Oklahoma Water Resources Board (OWRB).  This information was used by the USGS for the 2000 water-use compilation effort.  In addition, Oklahoma City and the City of Tulsa provided public supply and self-supplied industrial water use data directly to the USGS. The Grand River Authority is another source of public supply withdrawal data.  The data are augmented where known water-supplier data were missing by estimates based on prior year reports or from withdrawal data published in various reports. 

In 2000 ground-water withdrawals assigned to alluvial aquifers totaled 128 Mgal/d and ground-water withdrawals assigned to other totaled 19.3 Mgal/d.  An analysis of water withdrawals for other determined that they were appropriately assigned. The greatest amount of withdrawals within other, 8.02 Mgal/d, was assigned to the generic aquifer designation, Cretaceous System. Four other bedrock units had withdrawals in the 1-2 Mgal/d range, and the remaining 26 bedrock units had pumpage that was less than 1 Mgal/d.    All ground-water withdrawals from other could be attributed to various non-PA bedrock units so no principal aquifer unit was missing withdrawal data that had been assigned to other. 

Alluvial aquifer withdrawals disaggregated into two groups in Oklahoma.  Some ground-water withdrawals were identified as associated with a specific stream-valley aquifer and other ground-water withdrawals were from alluvial deposits that, over time, had become isolated and now were not in hydraulic connection with any present day surface water body. Total withdrawals of 126.1 Mgal/d were attributed to stream-valley aquifers and 1.62 Mgal/d was attributed to isolated alluvial deposits.  Stream-valley aquifers in Oklahoma that are listed here have been identified and described in the GW Atlas of the United States, Chapter E. They include (in order of magnitude of withdrawals) the Red, Arkansas, Cimarron, North Canadian, Canadian, and the Washita. Chapter E identified the equivalent to the Neosho stream-valley aquifer, but for the 2000 water-use compilation effort no withdrawals in the categories of public supply, self-supplied industrial, and irrigation originated from this aquifer.  In some cases, the Oklahoma aquifer names corresponded exactly to stream-valley aquifers mapped in the GW Atlas and withdrawals could be sub-allocated accordingly. In other cases, assignment of ground-water withdrawals to each of these stream-valley aquifers was accomplished by using hydraulic unit code (HUC) information available for individual wells. Oklahoma aquifer names or knowledge about individual rock units was used to assign withdrawals to isolated terrace deposits (oral communication, 2005, Scott C. Christenson, USGS).


