: These "4-meter" deep pits often collect stagnant water, creating breeding grounds for blood-sucking insects and contributing to soil salinization.
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: Defining the depth of drainage canals to manage water tables.
: Excavations and ditches near railway stations or reservoirs often reach depths of 3 to 4 meters .
: Describing the height of saline soil mounds or the depth of technogenic depressions.