Now in its third year, the current drought reminds us that California’s water supplies are limited. Calls are growing louder to enlarge dams – or build new ones – to expand the state’s water storage capacity. But far less attention is given to a cheaper but less visible option – storing water under our feet.

Groundwater storage represents both a practical solution to the state’s additional water storage needs and a tool to help manage groundwater more sustainably. Groundwater levels are continuing to decline across the state, not just from California’s current drought, but from decades of chronic overuse. Augmenting water supply through recharge into aquifers presents a cost-effective way of increasing the availability of groundwater for the inevitable dry times ahead.

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