Revision History for Circular 1464
 
By John K. Lovelace, Martha G. Nielsen, Amy L. Read, Chid J. Murphy, and Molly A. Maupin

Estimated Groundwater Withdrawals from Principal Aquifers in the United States, 2015 
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Posted online April 27, 2020
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Revised and reposted on June 2, 2020, version 1.1 

The reference to a web page that is no longer functional has been removed. All refeferences to U.S. Geological Survey,
2016a (The Lexicon of Hydrogeologic Names in the United States, accessed April 18, 2019, at https://water.usgs.gov/usgs/ogw/lexicon) have been removed from 
the report. 

The reference to the USGS (2016b) citation has been changed to USGS (2016) throughout the report. 

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Revised and reposted on October 16, 2020, version 1.2
The y-axis labels have been changed from "Withdrawals, in million gallons per year" to "Withdrawals, in million gallons per day" for figures 21, 23, 25, 27, 29, 31, 33, 34, 36, and 38.