In a recent study, researchers from the European Environmental Bureau (EEB), the Stockholm School of Economics (SSE), and the Potsdam Institute for Climate Impact Research (PIK) questioned the planned development of new nuclear capacities in the energy strategies of the United States and certain European countries.
You save the water in a hole, then pump it back and forth. You can cover it with PV to stop evaporation
This is also good for the droughts as you have emergency water.