CST Level 1 Land Surveyor Certification Practice

What is the primary purpose of a witness tree in land surveying?

1. To mark a property line

2. As a reference for section corners

3. To indicate soil conditions

4. For aesthetic purposes

The correct answer is: As a reference for section corners

A witness tree serves a specific and crucial role in land surveying primarily as a reference for section corners. These trees are typically located near property corners and can assist surveyors in re-establishing a corner that may no longer be physically marked. The presence of a witness tree often provides valuable information regarding the location of the property line, as it serves as a physical landmark that can be observed and used during boundary retracement surveys. The connection to section corners is particularly important because sections often delineate land ownership and use, and having visible references aids in ensuring accuracy in surveying activities. The characteristics of the witness tree, such as its species, size, and position relative to the corner, can all contribute to verification and confirmation of the vertical and horizontal alignment of property boundaries. Being a stable and often long-lived marker, a witness tree enhances the reliability of land survey data. While marking property lines might seem relevant, it is the role of a witness tree as a reference point that is more precise. Indicating soil conditions and aesthetic purposes do not align with the functional duties attributed to witness trees in surveying contexts.