To locate PLSS corners
Overview
The PLSS has a long history in the U.S. as the dominant system of describing and dividing land west of the Eastern seaboard. Only a few areas of Wisconsin were settled early enough to have legally recognized land boundary systems in place prior to the PLSS being developed here. Generally, these are land grants in the Green Bay area, early French (and then American) settlements in Green Bay and Prairie du Chien, and early Indian reservations.
At the most basic level, the PLSS can be described as-a legal (and not mathematical) reference system established by the Federal Government in 1785 to divide and then convey lands from the Public Domain to private land owners;
-a roughly gridded network of surveyed lines and monuments; approximate 6-mile by 6-mile "townships" composed of approximate 1-mile by 1-mile "sections;
-a key part of the original legal basis for virtually all property in the state.
The Public Land Survey System (PLSS) has a profound affect on how society operates in Wisconsin; however, it is such an underlying factor that most of us are unaware of it on a daily basis. The PLSS is the fundamental way that almost all of the state's land was first systematically marked, divided, and described, and remains the basis for that real property today. Features of the PLSS are depicted in various ways on a variety of maps.
Some effects of the PLSS are very visible. Grid-like layout of public roadways, common especially in flatter rural areas that don't have a high concentration of lakes or wetlands, is highly reflective of PLSS boundary lines. Some roads even carry names such as "Range Line Road." Farm fields often are laid out following the PLSS, creating rectangular patterns especially obvious from the air. In addition, some rural land parcels may be casually termed "the back forty".
On the other hand, the fundamental parts of the PLSS are almost invisible. The marked corners (e.g., "section corners") that are the most basic feature of the PLSS are not very obvious in the field. These corners, and the lines that connect them and that form the boundaries of land parcels, appear on a wide variety of maps, helping us understand the division, ownership, and location of real property. A key fact is that the original placement of PLSS corners is what controls most property lines. Modern monuments positioned incorrectly do not change property boundaries.
This explanation of the PLSS covers its origins, patterns, maintenance, use as a spatial reference system, and curiosities. We start by describing maps that show the PLSS, then point to several sources of coordinate values.
None of this information should be construed as being a substitute for the expertise of a professional land surveyor.