Thermal Stratification

Thermal stratification occurs when water in a body like a lake or reservoir separates into layers based on temperature. Warmer, less dense water stays on the surface, while cooler, denser water settles below. This layering can reduce mixing between layers, affecting oxygen levels and aquatic life. Stratification typically happens in warmer months and breaks down during cooler weather or wind, which helps stir the water and restore uniform temperature and dissolved oxygen. It’s an important natural process influencing water quality and ecology in lakes and reservoirs.