What does "access port" refer to in the context of a water well?

An "access port" in the context of a water well specifically refers to an opening designed for measuring water levels within the well. This feature is essential for monitoring the water table and ensuring that the well is functioning properly. By providing a means to measure the water level without requiring significant intervention or disruption to the well structure, an access port plays a critical role in the management and maintenance of water resources.

While there are other openings such as those for installing pumps or for maintenance access, these do not specifically serve the purpose of measuring water levels. The access port is tailored to facilitate accurate readings of the static water level, thereby providing vital information to well operators and contributing to the effective management of water supply systems.