Vertical control station marks indicate what information is determined?

• A. Elevation
• B. Latitude
• C. Water depth
• D. Soil type

Answer: (A)

Vertical control station marks, or benchmarks, provide a fixed reference for height relative to a vertical datum. They are placed with a known elevation above a reference level (often mean sea level), so surveyors can determine how high or low a point is compared to that datum. By leveling from the benchmark to the point of interest, you establish the elevation of that point. These marks do not convey horizontal position (latitude), ocean or water depths, or soil characteristics, which are determined by other measurements and analyses.