Fig. 4: Annual water supply and usage in the Hai River basin.
From: Unprecedented large-scale aquifer recovery through human intervention

a Annual water supply from various sources (km3), including surface water from reservoirs, groundwater from unconfined and confined aquifers, water diversion from the Yellow River, water diversion from the Yangtze River (South-to-North Water Diversion, SNWD), and reclaimed water. b Proportions of total water supply in 2005, 2014, and 2023. c Annual water use across different sectors (km3), including municipal, agricultural, industrial, and environmental water usage. d Proportions of total water use in 2005, 2014, and 2023.