Diverting and storing excess floodwaters in aquifers could help replenish depleted groundwater supplies
historic amounts of rain and snow after experiencing three of its driest years on record.
The technical term for the process of diverting or taking surface water and storing it underground is “managed aquifer recharge,” said Helen Dahlke, a professor and groundwater hydrologist at the University of California at Davis. Spreading water over designated areas is one of the most common recharging methods, Dahlke said. Pipelines, canals or ditches route water from the source, such as a river or aqueduct, to the recharge location. As it seeps through the ground, natural filtration often occurs, ridding the water of certain contaminants and pollutants before it reaches the groundwater table, she said.
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