Agriculture Reference
In-Depth Information
Supplementary
Survey Line
Principal Meridian
The property lines for all parcels of land—
such as an urban residential lot, subdivision,
farm, or school site—are established and refer-
enced to a federal or state land survey system.
Each land parcel and its property lines can be
researched in public records, such as a municipal
land office or public works department, and are
described according to the operating set of bench
marks and the land survey grid system. For
the most part, the local land survey system is
a finer-grained grid tied in to the township and
range system. The corners of a set of property
lines that define an individual land parcel are
tied to this system, with one corner based on the
nearest bench mark located in the vicinity of the
property. This bench-mark system is maintained
by the local governmental jurisdiction. Any one
bench mark can be researched at the appropriate
land records office of a city or county, depending
on where the parcel is located.
T2N
North
6 mi
Township
(or tier
values)
6 mi
T1N
Range Values
West East
Base
Line
South
T1S
T2S
R4W
R3W
R2W
R1W
R1E
R2E
6
5
4
3
2
1
NW
NE
SE
NW
7
8
9
10
11
12
SW
18
17
16
15
14
13
19
20
21
22
23
24
SW
SE
30
29
28
27
26
25
1 Mile
=1 Section Block
6
6
6
6
6
6
6 Miles
=1 Township/Range Block
Figure 6.8
There are 36 sections (section dimen-
sions are 1 mile by 1 mile) in each township block
Figure 6.9-B
Chinese survey marker
Figure 6.9-a
USGS survey marker
