Authors: Meng Ding*, Kansas State University, Jida Wang, Kansas State University
Topics: Water Resources and Hydrology, Water Resources and Hydrology, Human-Environment Geography
Keywords: water resources, freshwater lakes, water stress
Session Type: Paper
Presentation File: No File Uploaded
Lake water resources are affected by both increasing socioeconomic conditions and an inconstant physical environment. Due to the rapid population growth and global warming, a potentially important global issue is the unequal water stress of lakes and reservoirs on a global scale. Human freshwater demand for all functions is from rivers, groundwater, desalinized water, lakes, and reservoirs, plus product imports. However, the quantity of freshwater is extremely deficient in the world. To describe the impacts of human activities on surface water resources, this study focuses on the global lake water stress assessment by considering the relationship between human water consumption from lakes and lake water availability. An index of lake water stress is here generated to articulate the water imbalance. This index compares human water consumption and water availability that contains runoff discharge, groundwater, and freshwater lakes. Based on the high-resolution global distribution of freshwater lakes and saline lakes, making a geography connection between human activities and the natural water storage can provide a guideline on how lake water stress is distributed and support an advanced understanding of the global lake water resources.