The Impact of Climate Change on Reservoir Water Quality - A Literature Review
Nuha Amiratul Afifah, Riska Aprilia Triyadi, Tiara Sarastika, Fairy Virta Ramadhea, Rendy Colif Nurrahman, Syuhulin Darwobawong1

Department of Environmental Engineering UPN Veteran Yogyakarta, Jl. Pajajaran Condong Catur, Yogyakarta, Indonesia- Department of Soil Science UPN Veteran Yogyakarta, Jl. Pajajaran Condong Catur, Yogyakarta, Indonesia

Abstract

The emergence of climate change affects water resources such as reservoirs, which are essential in meeting the needs of households, agriculture and industries. This review uses a variety of sources to bring together the information about climate change effects on water quality in reservoirs. Rainfall patterns, increasing temperatures and altered runoff rates are significantly affected by changes in precipitation. The increased rain intensity causes more runoff into reservoirs containing higher amounts of sediments, nutrients and pollutants while prolonged periods of drought lower the water levels thus increasing pollutant concentrations. Such a trend is also associated with an increase in temperature that leads to thermal stratification as well as mixing processes that facilitate harmful algal blooms and chemical reactions within the medium. Additionally, this article captures regional differences in impacts and evaluates several mitigation techniques as well as adaptation approaches adopted. Moreover, by unraveling how climate change affects reservoir water quality managers can identify knowledge gaps and adapt to new environmental conditions through resilience building practices.

Keywords: climate change, reservoir water quality, runoff and sediment, thermal stratification, mitigation and adaptation

Topic: Engineering