Revision History for DS 533 Peggy E. Elliott and Joseph M. Fenelon Database of Groundwater Levels and Hydrograph Descriptions for the Nevada Test Site Area, Nye County, Nevada ----------------------------------------------------- First Posted online December 2010 ----------------------------------------------------- Version 2.0 posted December 2011 Text; Appendix A: Access Database, Excel spreadsheet, Tables Updates made to existing product: 1. Minor changes were made to the report title, text, figures, and tables. 2. Minor changes were made to the appendix. Specifically, a) 26 new wells from 8 boreholes recently drilled in the Pahute Mesa area were added to the water-level database; b) 631 new and historical water levels measured by U.S. Geological Survey through March 2011, and other agencies through May 2011, were added to the water-level database; c) Hydrograph narratives and water-level flags for some of the existing wells in the water-level database were modified and updated based on new data. ----------------------------------------------------- Version 3.0 posted October 2012 Text and Appendix A, which includes an Access database and three Excel spreadsheets Updates made to existing product: 1. Minor changes were made to the report text, figures, and tables. 2. Minor changes were made to the appendix. Specifically, a) 10 wells from 9 boreholes in the Jackass Flats area were added to the water-level database; b) 3,247 new and historic water levels measured by U.S. Geological Survey and other agencies through April 2012 were added to the water-level database; and c) Hydrograph narratives and water-level flags for some of the existing wells in the water-level database were modified and updated based on new data. ----------------------------------------------------- Version 4.0 posted November 2013 Text and Appendix A, which includes an Access database and three Excel spreadsheets Updates made to existing product: 1. Minor changes were made to the report text, figures, and tables: The borehole deviation equation for one borehole (RNM-1) was modified in table 1 and one new borehole (ER-20-5-3) was added to table 1. 2. The following changes were made to the appendix: a) 13 wells (ER-5-5, ER-11-2, ER-20-5-3, ER-20-11, ER-EC-14 main, ER-EC-14 deep, ER-EC-14 shallow, Gold Flat 1, Gold Flat 2, Gold Flat 2a, Gold Flat 3, J-14 WW, and TTR Well 53) from 11 boreholes on and adjacent to the Nevada National Security Site were added to the water-level database; b) 872 water levels measured by the U.S. Geological Survey and other agencies were added to the water-level database. These measurements are from the 13 wells mentioned above and existing wells in the database. Water levels from the existing wells include mostly new measurements made from 5/1/2012 to 6/30/2013, and some historic measurements made prior to 5/1/2012; and c) Hydrograph narratives and condition flags for some of the existing wells in the water-level database were modified and updated after re-analyzing data. Specific changes to water-level data, general condition flags, and hydrograph narratives that were made during fiscal year 2013 are documented in table NTS16_revision_history. This table is contained within the water-level database, ds533_NTS_WL.accdb, in Data Series 533 Appendix A. ----------------------------------------------------- Version 5.0 posted October 2014 1. Minor changes were made to the report text, figures, and table 2. 2. The following changes were made to the appendix: a) 10 sites (Ash-B Deep Well, Ash-B Shallow Well, Lamb Well, Tolicha Peak Well, U -12n Ext. Drift GSP, U -12n Main Drift GSP, U -12n Vent Hole 2, U -12n.10 Vent Hole, U -12t Main Drift GSD, and U -12t Main Drift GSP) from 5 boreholes and 2 tunnel complexes on and adjacent to the Nevada National Security Site were added to the water-level database; b) 998 water levels measured by the U.S. Geological Survey and other agencies were added to the water-level database. These measurements are for the 10 sites mentioned above and existing sites in the database. Water levels for the existing sites include mostly new measurements made from 7/1/2013 to 6/30/2014, and some historic measurements made prior to 7/1/2013; and c) Hydrograph narratives and condition flags for some of the existing sites in the water-level database were modified and updated after re-analyzing data. Specific changes to water-level data, general condition flags, and hydrograph narratives that were made during fiscal year 2014 are documented in table NTS16_revision_history. This table is contained within the water-level database, NTS_WL.accdb, in Data Series 533 Appendix A. ----------------------------------------------------- Version 6.0 posted October 2015 1. Minor changes were made to the report text, figures, and tables. 2. The following changes were made to the appendix: a) 12 sites (Hammel Mine Well, Narrows South Well 1, Narrows South Well 2, NDOT TPJ-2, TTR Antelope Mine 1, TTR Antelope Mine 2, TTR Antelope Mine 3, TTR Sulfide Mine, U-20m PS 1 DABCF, USAF TTR Cedar Pass R-1 WW, USAF TTR Cedar Pass WW, and USBLM TPJ-1) from 7 boreholes and 5 mine shafts on and adjacent to the Nevada National Security Site were added to the water-level database; b) 1,104 water levels measured by the U.S. Geological Survey and other agencies were added to the water-level database. These measurements are for the 12 sites mentioned above and existing sites in the database. Water levels for the existing sites include mostly new measurements made from 7/1/2014 to 6/30/2015, and some historic measurements made prior to 7/1/2014; and c) Hydrograph narratives and condition flags for some of the existing sites in the water-level database were modified and updated after re-analyzing data. Specific changes to water-level data, general condition flags, and hydrograph narratives that were made during fiscal year 2015 are documented in table NTS16_revision_history. This table is contained within the water-level database, NTS_WL.accdb, in Data Series 533 Appendix A. ----------------------------------------------------- Version 7.0 posted October 2016 1. Minor changes were made to the report text, figures, and tables. 2. The following changes were made to the appendix: a) 17 sites (ER- 2-2 o2; ER- 2-2 o3; ER- 3-3 m1-2; ER- 3-3 m2; ER- 3-3 p1; ER- 3-3 p2; ER- 3-3 p3; ER- 4-1 m1; ER- 4-1 p1; ER-20-12 m1; ER-20-12 p1; ER-20-12 p2; ER-20-12 p3; ER-20-12 p4; U -19yS (52-2350 ft); U -20ac (57-2220 ft); and UE-20u 2) from 7 boreholes on the Nevada National Security Site were added to the water-level database; b) 1,200 water levels measured by the U.S. Geological Survey and other agencies were added to the water-level database. These measurements are for the 17 sites mentioned above and existing sites in the database. Water levels for the existing sites include mostly new measurements made from 7/1/2015 to 6/30/2016, and some historic measurements made prior to 7/1/2015; and c) Hydrograph narratives and condition flags for some of the existing sites in the water-level database were modified and updated after re-analyzing data. Specific changes to water-level data, general condition flags, and hydrograph narratives that were made during fiscal year 2016 are documented in table NTS16_revision_history. This table is contained within the water-level database, NTS_WL.accdb, in Data Series 533 Appendix A. ------------------------------------------------------ Version 8.0 posted September 2018 1. Changes were made to the report text, figures, and tables. Appendix A is now available as U.S. Geological Survey (USGS) data release https://doi.org/10.5066/F75H7FGN. Tables ds533_Table_A1_Well_Characteristics.xlsx and ds533_Table_A2_Water_Level_Measurements_Summary.xlsx, formerly were provided as Microsoftİ Excel workbooks in Appendix A, but now are available in the data release as tables Well_Characteristics_Summary and Water_Level_Measurements_Summary in the Microsoftİ Access database, ds533_NTS_WL.accdb. 2. Additional changes to the Access database and Excel workbook in the data release include: a). 5 sites [ER-EC-11 main (upper zone), ER-EC-12 main (upper zone), ER-EC-13 main (upper zone), ER-EC-14 main (upper zone), and ER-EC-15 main (upper zone)] from 5 boreholes adjacent to the Nevada National Security Site (formerly Nevada Test Site) were added to the Access database; b). 768 water levels measured by the U.S. Geological Survey and other agencies were added to the Access database. These measurements are for the 5 sites mentioned above and for previously existing sites in the database. Water levels for the existing sites include mostly new measurements made from 7/1/2016 to 6/30/2017; and c). Hydrograph narratives and condition flags for some of the existing sites in the Access database were modified and updated after re-analyzing data. Specific additions or changes to water-level data, general condition flags, and hydrograph narratives that were made during fiscal year 2017 are documented in table NTS16_revision_history. This table is contained within the Access database, ds533_NTS_WL.accdb, in USGS data release https://doi.org/10.5066/F75H7FGN. ------------------------------------------------------ Version 9.0 posted February 2019 1. Minor changes were made to the report text, figures, and tables. 2. A revision history for the data release is available at https://doi.org/10.5066/F75H7FGN. ------------------------------------------------------- Version 10.0 posted February 2020 1. Minor changes were made to the report text, figures, and tables. 2. A revision history for the data release is available at https://doi.org/10.5066/F75H7FGN. ------------------------------------------------------- Version 11.0 posted May 2021 1. Minor changes were made to the report text, figures, and tables. 2. A revision history for the data release is available at https://doi.org/10.5066/F75H7FGN. ------------------------------------------------------ Version 12.0 posted April 2022 1. Minor changes were made to the report text and tables. 2. A revision history for the data release is available at https://doi.org/10.5066/F75H7FGN.