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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.
Well location: The system used for locating wells is based on the rectangular system for subdivision
of public land. The State is divided into 36 square mile townships numbered according to their
location relative to the east-west Willamette baseline and a north-south Willamette meridian. The
position of a township is given by its north-south "Township" position relative to the baseline
and its east-west "Range" position relative to the meridian. Each township is divided into
36 sections approximately 1-square-mile (640-acre) in area and numbered from 1 to 36. For example,
a well designated as 01S/03E-33DCA is located in Township 1 south, Range 3 east, section 33. The
letters following the section number correspond to the location within the section; the first
letter (D) identifies the quarter section (160 acres); the second letter (C) identifies the
quarter-quarter section (40 acres); and the third letter (A) identifies the quarter-quarter-quarter
section (10 acres). Thus, well 33DCA is located in the NE quarter of the SW quarter of the SE quarter
of section 33. Sorted on this item.
Sample Depth: The depth to the sample collection, in feet below land surface.
Unit code: The name of aquifer or geologic unit stored by the U.S. Geological
Survey in National Water Information System (NWIS), a national computer
database maintained by U.S. Geological Survey.
Major and trace elements: Major elements are listed in weight percent concentration and trace elements are listed in parts per million concentration. One percent equals 10,000 parts per million.
--, no data/unknown.
ND, non-detect
NA, not analysed
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