Which mechanism maintains lake level stability despite seasonal inflow variation within glacial lakes formed by isostatic rebound?

💡 Explanation

When seasonal inflow varies, subsurface groundwater flow buffering occurs because porous soil and rock formations in the lakebed and surroundings act as reservoirs, storing water during high inflow periods and releasing it during low inflow. Therefore, level stability results, rather than evaporation, sedimentation, or stratification which require alternate conditions and mechanisms.

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