No one who lives here needs to be told that Houston can flood every now and then. Doing something about it, though, can be intimidating — drainage and flood projects can be hugely expensive, take years and years to plan, approve and build, and only affect limited areas. Stephen Costello and others decided to take a big-picture approach and rolled the dice on a referendum called Renew Houston, which takes the financial strain of flood projects largely off the city budget. Voters approved a monthly fee that will eventually fund $10 billion in improvement projects and nothing else. It will be a while before we see any results, of course, but flood planning and prevention in Houston is suddenly looking a lot brighter.