Surveyor

Public Land Survey System (PLSS):
 
The PLSS is a way of subdividing and describing land in the United States.  All lands in the public domain are subject to subdivision by this rectangular system of surveys, which is regulated by the U.S. Department of the Interior, Bureau of Land Management (BLM).  More information about the PLSS can be found here.

The PLSS typically divides land into 6-mile-square townships, which is the level of information included in the National Atlas.  Townships are subdivided into 36 one-mile-square sections.  Sections can be further subdivided into quarter sections, quarter-quarter sections, or irregular government lots. Normally, a permanent monument, or marker, is placed at each section corner.  Monuments are also placed at quarter-section corners and at other important points, such as the corners of government lots. Today permanent monuments are usually inscribed tablets set on iron rods or in concrete.  The original PLSS surveys were often marked by wooden stakes or posts, marked trees, pits, or piles of rock, or other less-permanent markers.

In Crook County every legal description of a taxlot is broken down by a 13 character code. For example:

14,15,05,00,00000 = Township, Range, Section, Quarter Quarter, Taxlot Number.

Information on Plats can be found here.