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How does rainfall affect the parameters of lakes? 


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Rainfall events have various impacts on the parameters of lakes. They can reduce the thermal stability of the water column, deepen the mixing layer depth, and shape the thermocline . Rainfall can also have a cooling effect on the lake surface temperature by lowering the near-surface air temperature, through direct rain heat flux into the lake, and by mixing the lake surface layer through kinetic energy and convective mixing . Heavy rainfall can increase the water level of urban lakes, leading to flooding and affecting water quality due to runoff carrying pollutants . Rainstorm intensity and urbanization can significantly increase the runoff volume and pollution load of nutrients into lakes, deteriorating water quality . Additionally, rainfall can influence the biochemical composition of rain and impact the phytoplankton dynamics of lakes, with different species responding differently to rain events .

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The paper discusses the impact of rainfall on the biochemical composition and dynamics of a small eutrophic lake. It shows that rainfall affects the chemical composition of rain and the thermal stratification of the lake, which in turn influences the abundance and dynamics of different phytoplankton species.
The paper states that rainfall intensity increases the runoff volume and pollution load of TN and TP into the lake, resulting in worse water quality.
Open accessJournal ArticleDOI
Hua Lei, Aiju You, Zengcui Han, Haibo Xu 
02 Mar 2019
The paper states that heavy rainfall can have a significant influence on the water level of urban lakes and can carry pollutants that affect water quality. However, there is no specific information on how rainfall affects other parameters of lakes such as temperature, dissolved oxygen, or pH.
The paper discusses the effect of rainfall on the surface temperature of Lake Kivu, one of the African Great Lakes. It suggests that heavy rainfall may lead to a reduction in lake surface temperature compared to light to moderate rainfall. However, the paper does not provide information on how rainfall affects other parameters of lakes.
Rainfall events can reduce the thermal stability of the water column, deepen the mixing layer depth, and affect the thermocline in lakes. The impacts of rainfall on thermal stratification and dissolved oxygen are more significant in the riverine zone compared to transitional and lacustrine zones.

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