California’s recent drought was the worst in memory. However, in a relatively quick turnaround, this year the state’s water infrastructure is full and water managers are battling the wettest winter in quite some time. Now, by many accounts, the drought is over for much of the state. The uniquely wet winter of 2016-2017 has highlighted a key issue surrounding our surface water and groundwater storage infrastructure: We could have stored this abundant water, not in new reservoirs, but right under our feet.