Observation well USGS Site ID UTM East UTM North Land surface Well Interval Interval Thickness Radius or Geologic Unit Lithologic Description Welding Alteration Fracturing Date Date Analyzed Test type Avg pumping Analyzed Horizontal Hyd. Vertical Hyd. Vertical to Transmissivity Storativity Specific yield Analytical method "Sources of hydraulic-property data, aquifer test analysis, and supporting data" coordinate coordinate altitude Depth Top Bottom (meters) interwell (ash-flow tuff) Test Test record or injection Data Conductivity Conductivity horizontal (m2/day) (asterisk indicates analysis (meters) (meters) (meters) (meters) (meters) (meters) distance (m) started ended (minutes) rate (L/s) (meters/day) (meters/day) anisotropy was done during this study) USW H-4 365032116265401 549195.04 4077322.35 1248.7 1219.2 1181.0 1219.0 38.0 0.11 Lithic Ridge Tuff Ash-flow tuff PW None Unspecified 05/08/82 05/17/82 12818 Constant-rate withdrawal test 17.4 Drawdown 0.61 No Data No Data 23 No Data No Data Cooper and Jacob (1946) "Whitfield and others (1985, table 7)" USW H-1 365157116271201 548721.75 4079944.54 1303.1 1828.8 1621.0 1829.0 208.0 0.12 Crater Flat Grp/Tram Tuff Ash-flow tuff PW-MW Zeolitized Unspecified Nov-80 Nov-80 273 Slug-injection recovery test Not applicable Recovery 0.0000010 No Data No Data 0.00021 No Data No Data Cooper and others (1967) Rush and others (1984); Warren and others (1998) USW H-3 364942116280000 547536.88 4075762.03 1483.5 1219.0 822.0 1219.0 397.0 0.12 Crater Flat Grp/Tram Tuff and Lithic Ridge Tuff "Ash-flow tuff, lithic tuff, and bedded reworked tuff" PW-MW Zeolitized Unspecified Jan-84 Jan-84 20520 Constant-rate withdrawal test 0.16 Drawdown 0.0054 No Data No Data 1.0 No Data No Data Theis (1935) Thordarson and others (1985) USW H-6 365049116285500 546196.05 4077816.27 1302.1 1219.9 1155.0 1220.0 65.0 0.11 Lithic Ridge Tuff Ash-flow tuff and lithic ash-flow tuff NW-PW "Zeolitic, clayey" Unspecified 10/25/82 10/25/82 620 Slug-injection recovery test Not applicable Recovery 0.000045 No Data No Data 0.0029 No Data No Data Cooper and others (1967) Craig and Reed (1991) UE-25 p#1 364938116252101 551508.58 4075662.87 1114.2 1805.0 834.0 904.0 70.0 0.16 Crater Flat Grp/Tram Tuff and Lithic Ridge Tuff Lithic ash-flow tuff PW-MW Zeolitized Faulted Feb-83 Feb-83 150 Slug-injection recovery test Not applicable Recovery 0.011 No Data No Data 0.77 No Data No Data Cooper and others (1967) "Craig and Robison (1984, p. 28-49); Warren and others (1998)" UE-25 p#1 364938116252101 551508.58 4075662.87 1114.2 1805.0 904.0 974.0 70.0 0.15 Lithic Ridge Tuff Lithic ash-flow tuff NW-PW "Zeolitic, clayey" Faulted Feb-83 Feb-83 120 Slug-injection recovery test Not applicable Recovery 0.013 No Data No Data 0.94 No Data No Data Cooper and others (1967) "Craig and Robison (1984, p. 28-49); Warren and others (1998)" UE-25 p#1 364938116252101 551508.58 4075662.87 1114.2 1805.0 1000.0 1067.0 67.0 0.14 Lithic Ridge Tuff "Ash-flow tuff, lithic tuff, and bedded reworked tuff" PW "Zeolitic, clayey" Unspecified 02/07/83 02/09/83 3150 Constant-rate withdrawal test 22.1 Drawdown 0.030 No Data No Data 2 No Data No Data Theis (1935) "Craig and Robison (1984, p. 12-15); Warren and others (1998)" UE-25 p#1 364938116252101 551508.58 4075662.87 1114.2 1805.0 1110.0 1180.0 70.0 0.15 "Rhyolite of Picture Rock, Tunnel Fm, Tunnel bed 2, Tub Spring Tuff" Ash-flow tuff and conglomerate PW "Calcified, clayey" Unspecified Feb-83 Feb-83 120 Slug-injection recovery test Not applicable Recovery 0.0020 No Data No Data 0.14 No Data No Data Cooper and others (1967) "Craig and Robison (1984, p. 28-49); Warren and others (1998)" J-13 364828116234001 554016.88 4073517.23 1011.5 1063.1 819.9 1063.1 243.2 0.10 Crater Flat Grp/Tram Tuff and Lithic Ridge Tuff Ash-flow tuff and lithic ash-flow tuff NW-PW "Zeolitic, clayey" Unspecified No Data No Data No Data Swabbing-recovery test Not applicable Recovery 0.0026 No Data No Data 0.63 No Data No Data Cooper and others (1967) Thordarson (1983); Warren and others (1998) Test Well 8 370956116172101 563111.75 4113271.15 1735.7 1673.4 619.0 1673.4 1054.4 0.097 "Tuff of Yucca Flat, Tunnel bed 1, Redrock Valley Tuff, Tuff of Twin Peaks" "Ash-flow tuff, bedded tuff, and conglomerate" NW-DW Partly zeolitized Unspecified 01/04/63 01/05/63 1855 Constant-rate withdrawal test 4.86 Drawdown 0.068 No Data No Data 4.5 No Data No Data Theis (1935) IT Corporation (1996); West and Thordarson (1963); Warren and others (1998) UE-20j 371801116320301 541285.59 4128081.76 1799.2 1734.3 1107.6 1168.0 60.4 0.13 Rhyolite of Handley Rhyolite flow breccia Not applicable Zeolitized Unspecified Oct-64 Oct-64 10 Slug-injection recovery test Not applicable Recovery 0.054 No Data No Data 3.3 No Data No Data Cooper and others (1967) Blankennagel and Weir (1966); Orkild and Jenkins (1978); Warren and others (1998); USGS files Watertown 1 WW 371440115483401 605595.53 4122450.17 1353.6 204.2 171.0 204.2 33.2 0.10 Volcanic rocks of the Groom Range and Jumbled Hills Vitric ash-flow tuff and bedded tuff DW Partly zeolitized Unspecified 06/24/55 06/24/55 720 Constant-rate withdrawal test 1.4 Drawdown 0.080 No Data No Data 2.7 No Data No Data Cooper (1963) "IT Corporation (1996, Appendix A); Jayko (1990)" UCe-17 None 568049.79 4281240.26 1995.4 2431.7 957.0 1018.0 61.0 0.15 Tuff of Moores Station Buttes and unnamed tuff "Bedded, lithic-rich ash-fall tuff and ash-flow tuff" DW None Unspecified 06/25/67 06/25/67 30 Slug-injection recovery test Not applicable Recovery 0.0029 No Data No Data 2.63 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Ekren and others (1973)" UCe-17 None 568049.79 4281240.26 1995.4 2431.7 1960.4 2021.4 61.0 0.13 Tuff of Hot Creek Canyon (?) Quartz-latitic to rhyolitic ash-flow tuff and vitrophyre PW-DW None Unspecified 06/23/67 06/23/67 105 Slug-injection recovery test Not applicable Recovery 0.000014 No Data No Data 8.47E-04 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Ekren and others (1973); USGS files " UCe-17 None 568049.79 4281240.26 1995.4 2431.7 2056.4 2117.4 61.0 0.11 Tuff of Hot Creek Canyon (?) Quartz-latitic to rhyolitic ash-flow tuff and lithic ash-flow tuff PW-DW None Unspecified 06/22/67 06/22/67 270 Slug-injection recovery test Not applicable Recovery 0.0011 No Data No Data 0.0657 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Ekren and others (1973); USGS files " UCe-17 None 568049.79 4281240.26 1995.4 2431.7 2149.4 2210.4 61.0 0.12 Tuff of Hot Creek Canyon (?) Quartz-latitic to rhyolitic ash-flow tuff and lithic ash-flow tuff PW-DW None Unspecified 06/22/67 06/22/67 155 Slug-injection recovery test Not applicable Recovery 0.00039 No Data No Data 0.0239 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Ekren and others (1973); USGS files " UCe-17 None 568049.79 4281240.26 1995.4 2431.7 2212.5 2273.5 61.0 0.13 Tuff of Hot Creek Canyon (?) Quartz-latitic to rhyolitic ash-flow tuff and lithic ash-flow tuff PW-DW None Unspecified 06/21/67 06/22/67 430 Slug-injection recovery test Not applicable Recovery 0.000029 No Data No Data 0.00175 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Ekren and others (1973); USGS files " UCe-17 None 568049.79 4281240.26 1995.4 2431.7 1367.7 1428.7 61.0 0.12 Tuffaceous rocks of the Needles area Quartz-latitic ash-flow tuff DW None Unspecified 06/24/67 06/25/67 60 Slug-injection recovery test Not applicable Recovery 0.0011 No Data No Data 0.131 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Ekren and others (1973)" UCe-17 None 568049.79 4281240.26 1995.4 2431.7 1408.5 1469.5 61.0 0.13 Tuffaceous rocks of the Needles area Quartz-latitic ash-flow tuff DW None Unspecified 06/25/67 06/25/67 45 Slug-injection recovery test Not applicable Recovery 0.14 No Data No Data 8.76 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Ekren and others (1973); USGS files " Uce-20 None 568069.77 4271868.87 1755.3 1829.3 1481.4 1502.4 21.0 0.17 Tuff of Moores Station Buttes Quartz-latitic ash-flow tuff PW-DW None "Fractured, brecciated" 12/22/67 12/22/67 30 Slug-injection recovery test Not applicable Recovery 0.000012 No Data No Data 0.000248 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Dinwoodie and Schroder (1971); Ekren and others (1973)" Uce-20 None 568069.77 4271868.87 1755.3 1829.3 1481.4 1617.7 136.3 0.14 Tuff of Moores Station Buttes Quartz-latitic ash-flow tuff PW-DW None "Fractured, brecciated" 12/19/67 12/20/67 100 Slug-injection recovery test Not applicable Recovery 0.00099 No Data No Data 0.135 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Dinwoodie and Schroder (1971); Ekren and others (1973)" Uce-20 None 568069.77 4271868.87 1755.3 1829.3 1502.4 1538.4 36.0 0.14 Tuff of Moores Station Buttes Quartz-latitic ash-flow tuff MW-DW None Sparsely fractured 12/22/67 12/22/67 60 Slug-injection recovery test Not applicable Recovery 0.00012 No Data No Data 0.00438 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Dinwoodie and Schroder (1971); Ekren and others (1973)" Uce-20 None 568069.77 4271868.87 1755.3 1829.3 1521.3 1539.6 18.3 0.13 Tuff of Moores Station Buttes Quartz-latitic ash-flow tuff MW-DW None Sparsely fractured 01/04/68 01/04/68 1000 Slug-injection recovery test Not applicable Recovery 0.00012 No Data No Data 0.00219 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Dinwoodie and Schroder (1971); Ekren and others (1973)" Uce-20 None 568069.77 4271868.87 1755.3 1829.3 1539.6 1557.9 18.3 0.19 Tuff of Moores Station Buttes Quartz-latitic ash-flow tuff MW-DW None "Fractured, brecciated" 01/04/68 01/05/68 240 Slug-injection recovery test Not applicable Recovery 0.0072 No Data No Data 0.131 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Dinwoodie and Schroder (1971); Ekren and others (1973)" Uce-20 None 568069.77 4271868.87 1755.3 1829.3 1539.6 1617.7 78.1 0.14 Tuff of Moores Station Buttes Quartz-latitic ash-flow tuff MW-DW None "Fractured, brecciated" 12/21/67 12/21/67 100 Slug-injection recovery test Not applicable Recovery 0.0012 No Data No Data 0.0938 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Dinwoodie and Schroder (1971); Ekren and others (1973)" Uce-20 None 568069.77 4271868.87 1755.3 1829.3 1680.0 1829.3 149.3 0.13 Tuff of the Needles Rhyolitic ash-flow tuff and lithic ash-flow tuff NW-DW None Variably fractured 01/03/68 01/03/68 6 Slug-injection recovery test Not applicable Recovery 0.13 No Data No Data 26.3 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Dinwoodie and Schroder (1971); Ekren and others (1973)" Uce-20 None 568069.77 4271868.87 1755.3 1829.3 1798.8 1829.3 30.5 0.12 Tuff of the Needles "Rhyolitic, lithic ash-flow tuff" NW-PW None Sparsely fractured 01/02/68 01/02/68 30 Slug-injection recovery test Not applicable Recovery 0.00057 No Data No Data 0.0173 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Dinwoodie and Schroder (1971); Ekren and others (1973)" Uce-20 None 568069.77 4271868.87 1755.3 1829.3 1625.0 1829.3 204.3 0.13 Tuffs of Moores Station Buttes and the Needles "Ash-flow tuff, lithic ash-flow tuff, and ash-fall tuff" NW-DW None Variably fractured 01/03/68 01/03/68 3 Slug-injection recovery test Not applicable Recovery 0.11 No Data No Data 43.8 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Dinwoodie and Schroder (1971); Ekren and others (1973)" Uce-20 None 568069.77 4271868.87 1755.3 1829.3 1652.4 1670.7 18.3 0.12 Tuff of Moores Station Buttes "Bedded, lithic-rich, ash-fall tuff" Not applicable None Sparsely fractured 01/05/68 01/05/68 2.5 Slug-injection recovery test Not applicable Recovery 1.1 No Data No Data 37.5 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Dinwoodie and Schroder (1971); Ekren and others (1973)" UE-25 p#1 364938116252101 551508.58 4075662.87 1114.2 1805.0 904.0 974.0 70.0 0.15 Lithic Ridge Tuff Ash-flow tuff and lithic ash-flow tuff PW-MW Zeolitized Unspecified Feb-83 Feb-83 170 Slug-injection recovery test Not applicable Recovery 0.012857143 No Data No Data 0.9 No Data No Data Cooper and others (1967) "Craig and Robison (1984, p. 28-49)" Adobe Federal 16-1 None 601489.88 4238938.44 1447.5 1202.4 380.4 409.0 28.6 0.089 Garrett Ranch Group "Lava flows, ash-flow tuff, ash-fall tuff, and tuffaceous sandstone" NW-DW None Unspecified Oct-82 Oct-82 90 Drill-stem test No Data Recovery 0.0082 No Data No Data 0.24 No Data No Data Horner (1951) "McKay and Kepper (1988, Appendix B); Schalla and Johnson (1994)" HTH-1 383734116124501 568543.15 4275398.56 1832.1 1126.2 731.7 750.0 18.3 0.12 Monotony Tuff Ash-flow tuff DW None Unspecified 08/01/67 08/01/67 100 Slug-injection recovery test Not applicable Recovery 0.018 No Data No Data 0.33 No Data No Data Cooper and others (1967) "Dinwiddie (1968, 1970a); Ekren and others (1973); USGS files " HTH-3 383321116070201 576919.94 4267658.04 1802.7 1831.5 1056.1 1114.0 57.9 0.12 Tuff of Williams Ridge and Morey Peak Rhyolitic to quartz-latitic ash-flow tuff PW-DW Clayey Unspecified 08/30/68 08/30/68 80 Slug-injection recovery test Not applicable Recovery 0.036 No Data No Data 2.1 No Data No Data Cooper and others (1967) "Dinwiddie (1970b, table 1); Ekren and others (1973); USGS files" HTH-3 383321116070201 576919.94 4267658.04 1802.7 1831.5 1118.6 1171.0 52.4 0.12 Tuff of Williams Ridge and Morey Peak Rhyolitic to quartz-latitic ash-flow tuff PW-DW Clayey Unspecified 08/27/68 08/27/68 380 Slug-injection recovery test Not applicable Recovery 0.18 No Data No Data 9.7 No Data No Data Cooper and others (1967) "Dinwiddie (1970b, table 1); Ekren and others (1973); USGS files" HTH-3 383321116070201 576919.94 4267658.04 1802.7 1831.5 1431.6 1526.4 94.8 0.11 Tuff of Williams Ridge and Morey Peak "Ash-flow tuff, tuffaceous sandstone, and claystone" DW Tuff clayey Unspecified 10/31/68 10/31/68 60 Slug-injection recovery test Not applicable Recovery 0.0081 No Data No Data 0.77 No Data No Data Cooper and others (1967) "Dinwiddie (1970b, table 1); Ekren and others (1973); USGS files" HTH-3 383321116070201 576919.94 4267658.04 1802.7 1831.5 1569.6 1667.2 97.6 0.11 Tuff of Williams Ridge and Morey Peak Rhyolitic to quartz-latitic ash-flow tuff PW-DW Clayey Unspecified 10/30/68 10/30/68 120 Slug-injection recovery test Not applicable Recovery 0.0025 No Data No Data 0.24 No Data No Data Cooper and others (1967) "Dinwiddie (1970b, table 1); Ekren and others (1973); USGS files" HTH-3 383321116070201 576919.94 4267658.04 1802.7 1831.5 1673.3 1770.8 97.5 0.11 Tuff of Williams Ridge and Morey Peak Rhyolitic to quartz-latitic ash-flow tuff PW-DW Clayey Unspecified 10/29/68 10/29/68 80 Slug-injection recovery test Not applicable Recovery 0.030 No Data No Data 2.9 No Data No Data Cooper and others (1967) "Dinwiddie (1970b, table 1); Ekren and others (1973); USGS files" HTH-4 383216116013301 584897.68 4265713.88 1776.3 1839.7 265.2 271.3 6.1 0.17 Tuff of Palisade Mesa (?) "Rhyolitic, pumice-lapilli, ash-flow tuff" DW None Unspecified 01/21/69 01/21/69 325 Slug-injection recovery test Not applicable Recovery 0.12 No Data No Data 0.73 No Data No Data Cooper and others (1967) "Dinwiddie (1970c, table 1); Ekren and others (1973); USGS files" HTH-4 383216116013301 584897.68 4265713.88 1776.3 1839.7 1347.2 1356.3 9.1 0.070 Tuff of Williams Ridge and Morey Peak Rhyolitic to quartz-latitic ash-flow tuff PW-DW None Unspecified 02/01/69 02/02/69 1825 Slug-injection recovery test Not applicable Recovery 0.00081 No Data No Data 0.0073 No Data No Data Cooper and others (1967) "Dinwiddie (1970c, table 1); Ekren and others (1973); USGS files" HTH-21-1 383512116043801 580377.29 4271115.80 1786.8 1981.1 1470.6 1528.5 57.9 0.12 Tuff of Halligan Mesa Rholitic ash-flow tuff NW-DW None Unspecified 08/27/68 08/27/68 200 Slug-injection recovery test Not applicable Recovery 0.012 No Data No Data 0.69 No Data No Data Cooper and others (1967) Dinwiddie (1970d); Dinwiddie and Schroder (1971); Ekren and others (1973); USGS files HTH-23 383023116012201 585203.09 4262246.59 1766.3 2285.9 1549.5 1597.7 48.2 0.086 Tuff of Williams Ridge and Morey Peak Rhyolitic to quartz-latitic ash-flow tuff PW-DW None Unspecified 11/26/68 11/26/68 270 Slug-injection recovery test Not applicable Recovery 0.019 No Data No Data 0.91 No Data No Data Cooper and others (1967) Dinwiddie (1970e); Dinwiddie and Schroder (1971); Ekren and others (1973); USGS files HTH-23 383023116012201 585203.09 4262246.59 1766.3 2285.9 1595.6 1668.7 73.1 0.086 Tuff of Williams Ridge and Morey Peak Rhyolitic to quartz-latitic ash-flow tuff PW-DW None Unspecified 11/23/68 11/23/68 240 Slug-injection recovery test Not applicable Recovery 0.00083 No Data No Data 0.061 No Data No Data Cooper and others (1967) Dinwiddie (1970e); Dinwiddie and Schroder (1971); Ekren and others (1973); USGS files HTH-23 383023116012201 585203.09 4262246.59 1766.3 2285.9 1722.0 1795.2 73.2 0.086 Tuff of Williams Ridge and Morey Peak Rhyolitic to quartz-latitic ash-flow tuff PW-DW None Unspecified 11/27/68 11/27/68 200 Slug-injection recovery test Not applicable Recovery 0.000014 No Data No Data 0.0010 No Data No Data Cooper and others (1967) Dinwiddie (1970e); Dinwiddie and Schroder (1971); Ekren and others (1973); USGS files HTH-23 383023116012201 585203.09 4262246.59 1766.3 2285.9 1776.9 1850.0 73.1 0.086 Tuff of Williams Ridge and Morey Peak Rhyolitic to quartz-latitic ash-flow tuff PW-DW None Unspecified 11/27/68 11/27/68 280 Slug-injection recovery test Not applicable Recovery 0.0000084 No Data No Data 0.00062 No Data No Data Cooper and others (1967) Dinwiddie (1970e); Dinwiddie and Schroder (1971); Ekren and others (1973); USGS files HTH-23 383023116012201 585203.09 4262246.59 1766.3 2285.9 1853.1 1898.8 45.7 0.086 Tuff of Williams Ridge and Morey Peak Rhyolitic to quartz-latitic ash-flow tuff PW-DW None Unspecified 11/27/68 11/27/68 55 Slug-injection recovery test Not applicable Recovery 0.13 No Data No Data 5.8 No Data No Data Cooper and others (1967) Dinwiddie (1970e); Dinwiddie and Schroder (1971); Ekren and others (1973); USGS files HTH-23 383023116012201 585203.09 4262246.59 1766.3 2285.9 1911.0 1943.9 32.9 0.086 Tuff of Williams Ridge and Morey Peak Rhyolitic to quartz-latitic ash-flow tuff PW-DW None Unspecified 12/16/68 12/16/68 150 Slug-injection recovery test Not applicable Recovery 0.15 No Data No Data 4.8 No Data No Data Cooper and others (1967) Dinwiddie (1970e); Dinwiddie and Schroder (1971); Ekren and others (1973); USGS files