The 'Water Table' in an unconfined aquifer is defined as the surface where:
Choose the correct answer
Water velocity is maximum
Pore water pressure = atmospheric (zero gauge pressure) — top of saturated zone
Clay layer is present
Artesian pressure exists
Correct Answer
B. Pore water pressure = atmospheric (zero gauge pressure) — top of saturated zone
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
Water table: phreatic surface = locus of points at which the pore water pressure is atmospheric (zero gauge). Below water table: positive pore pressure (saturated, pores filled). Above water table: negative pore pressure (capillary zone, partially saturated). The water level in an observation well in unconfined aquifer = water table elevation.
ScoreCardAI links this solution with subject, topic and difficulty signals so your scorecard can identify weak areas after a full mock test.
Practice more Civil Engineering questions
This MCQ belongs to JE Level Premium Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.