World Lake Day observed on August 27 to protect vital ecosystems:

The first-ever World Lake Day was observed on 27 August to highlight the ecological, economic, and cultural significance of lakes. Lakes are vital natural reservoirs that provide drinking water, support agriculture and industries, regulate climate, absorb floods, and store carbon. Apart from their environmental role, they also generate recreational and economic benefits, including tourism, fishing, and local community livelihoods. The observance calls for collective global efforts to protect lakes from pollution and degradation.