Table C1. Summary of Borehole Geophysical Data for Selected Wells in the Willamette Basin, Oregon
Well location: See Well and Spring Location System for explanation.
Well Log ID: Unique identifier combining a four-letter county code and a well-log number with up to 6 digits,
which is assigned to the well when a water well report is filed by the well driller with the
Oregon Water Resources Department and recorded in Ground Water Resource Information Distribution (GRID),
a statewide computer database maintained by Oregon Water Resources Department. Wells having a four-letter
county code of PIPE were taken from the U.S. Geological Survey Water-Supply Paper 890 (Piper, 1942) and
the well-log number indicates the number assigned in the tables of this report. A well with no Well Log ID was either
drilled before a water well report was required, the water well report was not in GRID, or could not be correlated
to a water well report.
USGS Site ID: Site identification number permanently assigned to the well by the U.S. Geological Survey and recorded in
National Water Information System (NWIS), a national computer database maintained by U.S. Geological Survey.
Fluid conductivity log: Log of fluid conductivity, reported in units of microsiemens per centimeter (uS/cm).
Fluid temperature log: Log of fluid temperature, reported in units of degree Fahrenheit (F).
Natural gamma log: Log of natural gamma, reported in units of counts per second (cps).
Hole diameter log: Log of diameter of bore hole, reported in units of inches.
Bulk conductivity log: Log of bulk (pore water and rock or soil matrix) conductivity, reported in units of
milliSiemens per meter (mS/m), logged in millimho per meter.
Hydrogeologic unit: Hydrogeologic unit(s) that the well is completed in (see Gannett, M.W. and Caldwell, R.R., 1998, Geologic
Framework of the Willamette Lowland Aquifer System, Oregon and Washington: U. S. Geological Survey Professional Paper 1424-A, 32 p);
W, Willamette Silt unit;
U, Willamette Aquifer Unit;
L, Willamette Confining Unit;
C, Columbia River basalt;
B, Basement Confining unit.
Depth logged: Depth logged, in feet.
x, data logged.
-, no data, instrument problems.
c, no data, steel casing.
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Well Well-log USGS Available Logs Hydrogeologic Depth
Location ID Site ID Fluid Fluid Natural Hole Bulk unit logged
conductivity temperature gamma diameter conductivity (feet)
log log log log log
(uS/cm) (F) (cps) (inches) (mS/m)
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01S/01W-17AAD1 WASH 8851 452916122493401 x x x c c L 410
01S/01W-31DAB WASH 9162 452623122510101 x x x x x C 710
01S/03E-35DDA1 CLAC 51848 452418122234001 x x x x x U,L,C 1600
02S/01W-32ADD WASH 51903 452113122493001 x x x x x C,B 1030
03S/01W-14ABA CLAC 50585 451903122460801 x x x x x W,U,L,C 657
04S/04W-24DDB YAMH 5840 451210123070601 x x x c c W,U 110
05S/01W-34ABA1 MARI 2174 450557122472001 - - x - x W,U,L,C 710
05S/03W-06CBD YAMH 1928 450949123062901 x x x c - W,C 355
05S/04W-13DAD YAMH 7924 450807123065201 - - x c c C 400
05S/04W-20CDC2 YAMH 2787 450658123123701 x x x x x W,U,L,B 195
06S/03W-04ACD MARI 4816 450451123031901 x x x c c U,L 65
06S/03W-08DDA POLK 1023 450333123041301 x x x c c W,U,L 58
12S/01W-30DDD LINN 9725 442929122504801 x x x c x B 260
12S/05W-02AAA LINN 12120 443348123150201 x x x - - U,L,B 67
12S/06W-11DDA BENT 5672 443217123222301 x x x x x W,U,L,B 170
20S/03W-07DCA LANE 22027 435024123053401 x x x x x B 335
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Report: Ground-Water and Water-Chemistry Data for the Willamette Basin, Oregon
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