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Ground-Water Hydrology of the Upper Klamath Basin, Oregon and ...

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ix<br />

Location System<br />

The system used for locating wells <strong>and</strong> springs in this report is based on <strong>the</strong> rectangular system<br />

for subdivision <strong>of</strong> public l<strong>and</strong>. The States <strong>of</strong> <strong>Oregon</strong> <strong>and</strong> California are divided into 36 squaremile<br />

townships numbered according to <strong>the</strong>ir location relative to an east-west baseline <strong>and</strong> a<br />

north-south meridian. In <strong>Oregon</strong>, <strong>the</strong> Willamette base line <strong>and</strong> meridian are used, <strong>and</strong> in California,<br />

<strong>the</strong> Mount Diablo baseline <strong>and</strong> meridian are used. The position <strong>of</strong> a township is given by<br />

its north-south “Township” position relative to <strong>the</strong> baseline <strong>and</strong> its east-west “Range” position<br />

relative to <strong>the</strong> meridian. Each township is divided into 36 sections approximately 1 square mile<br />

(640-acre) in area <strong>and</strong> numbered from 1 to 36. For example, a well designated as 36S/11E-<br />

20DCA is located in Township 36 south, Range 11 east, section 20. The three letters following<br />

<strong>the</strong> section number (A,B,C, or D) correspond to <strong>the</strong> location within <strong>the</strong> section; <strong>the</strong> first<br />

letter identifies <strong>the</strong> quarter section (160 acres), <strong>the</strong> second letter identifies <strong>the</strong> quarter-quarter<br />

section (40 acres), <strong>and</strong> <strong>the</strong> third letter identifies <strong>the</strong> quarter-quarter-quarter section (10 acres).<br />

Thus, well 20DCA is located in <strong>the</strong> NE quarter <strong>of</strong> <strong>the</strong> SW quarter <strong>of</strong> <strong>the</strong> SE quarter <strong>of</strong> section<br />

20. When more than one designated well occurs in <strong>the</strong> quarter-quarter-quarter section, a serial<br />

number is appended. For some wells that were field located during previous studies or by <strong>the</strong><br />

California Department <strong>of</strong> <strong>Water</strong> Resources, a different system <strong>of</strong> letters following <strong>the</strong> section<br />

number was used for <strong>the</strong> location within <strong>the</strong> section. This system assigns a letter to one <strong>of</strong> 16<br />

quarter-quarter sections (40 acres) that divide <strong>the</strong> section. The location 20DCA corresponds to<br />

<strong>the</strong> location 20Q. When more than one designated well occurs in <strong>the</strong> quarter-quarter section, a<br />

serial number is appended.<br />

R. 8 E. R. 10 E. R. 12 E. R. 14 E.<br />

T. 34 S.<br />

T. 36 S.<br />

6<br />

5<br />

4<br />

3<br />

2<br />

1<br />

7 8 9 10 11 12<br />

18<br />

17<br />

16<br />

15<br />

14<br />

13<br />

19 20 21 22 23<br />

24<br />

30<br />

29<br />

28<br />

27<br />

26<br />

25<br />

31 32 33 34 35 36<br />

B<br />

20<br />

A<br />

D<br />

E<br />

C<br />

F<br />

B<br />

G<br />

20<br />

A<br />

H<br />

C<br />

B<br />

D<br />

B A<br />

C<br />

C D<br />

A<br />

D<br />

M<br />

N<br />

L<br />

P<br />

K<br />

Q<br />

J<br />

R<br />

36S/11E-20DCA<br />

36S/11E-20Q

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