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Original Water Level:
The acidity variance at different depths was also evidence that underground streams leading into the cenote were well below the original water level. A high percentage of nitrates also found in the water resulted from bat excrement. Bats inhabited the crevices around the cenote and could be seen soon after each sunset as they began to swarm out for food. These animals, however, were not the only kind in the sacred well; others became more apparent as the water level continued to be lowered. Several moccasin-type snakes were seen and killed as laborers cleared vegetation from the emerging bank. Ground iguanas and smaller lizards were found inhabiting the walls of the cenote, while several types of fish were found in the water.The lowest level of the water-table, reached at the driest time of year, is called the permanent water-table. Wells must be drilled to this level if they are to supply water throughout the year. In artesian wells [7] water is forced to the surface by hydrostatic pressure - this results from the rim of the well being below the level of the water-table in the catchment area. Artesian water is obtained from porous sandstone aquifers that underlie the Great Artesian Basin of Australia. These aquifers are supplied with water from the rain that falls on the Eastern Highlands.
It is possible that you will strike water as you dig the holes. They may flood to some level below the surface. If they do, this level is that of the water table. Below the water Table all spaces between the soil particles are filled with water, and the roots of grasses cannot grow there.
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