Land development almost always “improves” drainage. Construction and farming activities both lead to large areas where rainfall goes into rivers rather than infiltrating into the ground. Almost all areas need to be more mindful of including intentional infiltration points for rainwater to seep into the ground and replenish aquifers.

Solar (and perhaps nuclear) to desalinate seawater and refill aquafiers as soon as we desalinate more than we use. This must be government financed projects, since groundwater is the very definition of tragedy of the commons.