While coastal communities debate the merits of desalting seawater as a drought solution, a new approach to desalination could be a boon to farmers far inland.
We've thought about drilling offshore for oil and gas long before we thought about finding fresh water there. A recent review paper in Nature has brought the topic of offshore fresh groundwater to wider visibility.
Importing an Arctic iceberg for freshwater? Painting brown lawns green? California has had some creative ideas for droughts in the past.