What is the nominal height of the "Regular" South half of Section 6?

The nominal height of the "Regular" South half of Section 6 is correctly identified as 40 chains. In surveys, a section is typically composed of 640 acres, and when dividing a section into halves, each half would cover 320 acres. When converted to a length, a chain is equivalent to 66 feet, which is a common unit of measurement in land surveying.

To determine the nominal height in chains, the length of the South half of a section can be calculated based on the overall dimensions of a section. A regular section is generally measured as a square with each side being one mile, which equals 80 chains. Therefore, when you consider the nominal height of the South half alone, it would be 40 chains, as it represents half of the total height of the section.

This knowledge is key for understanding how sections are laid out and measured in land surveys, particularly in Oklahoma, where Public Land Survey System (PLSS) methods are utilized. The other options represent lengths that do not correlate with the division of a section based on the traditional surveying methods.