Which process reduces a lake's water level during stratification overturn?

💡 Explanation

When overturn happens, deeper nutrient-rich layers rise because density equalizes, promoting algae blooms which darken lake coloration increasing water temperature as a process, and consequently rising surface evaporation rates. Therefore evaporation results, not decreasing runoff or sedimentation which do not vary between stratified/destratified periods and not discharge variation related only to overturn events.

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