Scientific Investigations Report 2008–5071
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2008–5071
Table 3. Summary information for wells completed in the Eastbank Aquifer system, Douglas County, Washington.
[Locations of wells are shown in figure 2. USGS well No.: See figure 4 for explanation of well-numbering system. Latitudes and longitudes of the wells are on file with the U.S. Geological Survey. Completion date of well: Source of information is well log or first mention in previous studies. Altitude of land surface: Datum is National Geodetic Vertical Datum (NGVD 29). Depth of well: Source of information is well log unless otherwise noted. Type of log available in this study: C, down-hole camera; D, driller’s; G1, natural gamma from previous studies; G2, natural gamma from this study; L, lithology. Abbreviations: USGS, U.S. Geological Survey;–, not available]
| Local well name | USGS well No. | Completion date of well | Hydrogeologic unit to which well is open | Altitude of land surface (feet) | Depth of well (feet) | Primary use of water since completion of Rocky Reach Dam | Type of log available in this study | Remarks |
|---|---|---|---|---|---|---|---|---|
| CD6 | 24N/20E-35Q06 | 1972 or earlier; probably 1957 or earlier | Lower Aquifer | 744.7 | 216 | Monitoring | C, G2, L | Open-end well (no perforations). |
| CD8 | 24N/20E-35R01 | 1957 or earlier | Clay Confining Unit | 724.0 | 231 | Monitoring | L | Open-end well (no perforations). Well may be open to a sand lens connected to the Lower Aquifer based on cross section A-A' by Stone and Webster Engineering Corporation (1959); the water-level response to the 2-hour shutdown of pumping on July 18, 2007; and the fact that this well is used to monitor the integrity of the subsurface cutoff wall. |
| CD10 | 24N/20E-35Q01 | 1959 or earlier; probably 1957 or earlier | __ | 733.6 | 230 | Monitoring | L | Well may be open to the Lower Aquifer based on cross section A-A’ by Stone and Webster Engineering Corporation (1959); the water-level response to the 2-hour shutdown of pumping on July 18, 2007; and the fact that this well is used to monitor the integrity of the subsurface cutoff wall. |
| CD47 | 24N/20E-35Q02 | 1959 or earlier; probably 1957 or earlier | Lower Aquifer | 746.6 | 245 | Monitoring | C, G2, L | |
| CT well field | ||||||||
| CT1 | 24N/20E-35K10 | November 1987 | Lower Aquifer | 747.7 | 206 | Hatchery | D | |
| CT2 | 24N/20E-35Q04 | November 1987 | Lower Aquifer | 748.1 | 204 | Hatchery | D | |
| CT3 | 24N/20E-35Q03 | December 1987 | Lower Aquifer | 749.9 | 213 | Hatchery | D | |
| CT4 | 24N/20E-35K11 | January 1988 | Lower Aquifer | 747.9 | 203 | Hatchery | D | |
| LR well field | ||||||||
| LR1 | 24N/20E-35H04 | after 1977 and before 1988 | Combined Aquifer | 750 | – | Irrigation | – | Altitude of land surface is ±10 ft. |
| LR2-E | 24N/20E-35H01 | after 1977 and before 1988 | Combined Aquifer | 770 | 157 | Irrigation | – | Altitude of land surface is ±10 ft. Depth of well estimated from hydrogeologic cross section by CH2M Hill (1988). |
| LR2-W | 24N/20E-35H02 | after 1977 and before 1988 | Combined Aquifer | 770 | – | Irrigation | – | Altitude of land surface is ±10 ft; Chelan County PUD notes indicate this well is 140 ft deep. |
| RW well field | ||||||||
| RW1 | 24N/20E-35K07 | July 1977 | Lower Aquifer | 742.7 | 219 | Public Supply | D | |
| RW2 | 24N/20E-35K08 | July 1979 | Lower Aquifer | 747.6 | 226 | Public Supply | D | |
| RW3 | 24N/20E-35K09 | June 1979 | Lower Aquifer | 746.8 | 230 | Public Supply | D | |
| RW4 | 24N/20E-35H03 | June 1979 | Lower Aquifer | 737.8 | 179 | Public Supply | D | |
| SW well field | ||||||||
| SW11 | 24N/20E-35Q05 | 1959 or earlier | Lower Aquifer | 726.9 | – | Irrigation | – | |
| SW13 | 24N/20E-35K12 | 1959 or earlier | Lower Aquifer | 740.3 | 176 | Irrigation/Dam | – | |
| SW14 | 24N/20E-35K13 | 1959 or earlier | Lower Aquifer | 737.8 | – | Irrigation/Dam | – | |
| TH1 | 24N/20E-35K05 | 1977 | Lower Aquifer | 748.1 | 190 | Monitoring | D, G1 | |
| TH2 | 24N/20E-35K06 | 1977 | Lower Aquifer | 741.4 | 225 | Monitoring | C, D, G1, G2 | |
| TH4 | 24N/20E-35K02 | 1977 | Lower Aquifer | 723.8 | 170 | Monitoring | C, D, G1 | |
| TH5 | 24N/20E-35G01 | July 1987 | Upper Aquifer | 713.1 | 47 | Monitoring | C, D | |
| TH6 | 24N/20E-35G02 | July 1987 | Combined Aquifer | 727.6 | 134 | Monitoring | C, D, G2 | |
| TH7 | 24N/20E-35K01 | July 1987 | Lower Aquifer | 723.8 | 176 | Monitoring | C, D | |
| TH8 | 24N/20E-35K04 | November 1987 | Lower Aquifer | 747.8 | 255 | Monitoring | C, D | Open-end well (no perforations). |
| TH9 | 24N/20E-35K03 | October 1987 | Lower Aquifer | 743.2 | 211 | Monitoring | C, D |
U.S. Department of the Interior | U.S. Geological Survey
URL: http://pubs.usgs.gov/sir/2008/5071
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