Quick Answer
Locating a buried cistern typically involves using a combination of visual inspection, probing, and non-invasive detection methods to minimize damage to the surrounding area.
Visual Inspection and Probe Testing
Begin by visually inspecting the property for any visible signs of a buried cistern, such as a slight depression in the ground or a difference in vegetation growth. Use a probing rod or a long, thin metal rod to test for the presence of a cistern. Insert the probe into the ground at regular intervals, about 1-2 feet apart, to detect any obstructions or changes in soil density.
Non-Invasive Detection Methods
If visual inspection and probing don’t yield results, consider using non-invasive detection methods such as ground-penetrating radar (GPR), electromagnetic (EM) surveys, or thermal imaging. GPR can detect the presence of a cistern by sending radar pulses into the ground and analyzing the returning signals. EM surveys use a coil to detect changes in the electrical conductivity of the soil, which can indicate the presence of a metal cistern. Thermal imaging can help identify areas of the ground where the temperature is different from the surrounding soil, potentially indicating a buried cistern.
Additional Tips for Cistern Location
When using non-invasive detection methods, it’s essential to follow the manufacturer’s instructions and take into account any potential sources of interference, such as nearby power lines or metal objects. Additionally, consider using a grid-based approach to survey the area, dividing the property into smaller sections and testing each one systematically. This can help ensure that the cistern is located efficiently and effectively, minimizing the risk of damage to the surrounding area.
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