Correction and addition to my previous comment

Rain gardens need NOT be raised areas. Raised areas can collect water only from higher ground. Defeats the purpose if one is trying to use as much ground as possible and makes them cost time, labor and money. 

No doubt grants can be grabbed for retrofitting badly designed and built neighborhoods to correct stormwater problems. But the money the landowners save on watering, fertilizing and mowing their English-manor style lawns will quickly pay them for whatever they might invest in turf removal and planting some native tall grass and wildflowers and some extra roof gutter and whatever is needed to route their driveway, sidewalk and roof water to an appropriate area. 

Grants may be needed for curb cuts to route water FROM the streets to the lawns and similar work. But that kind of work would be lagnaiappe.
Public education could bring about a time when homeowners look out their windows and admire their yards and say such things as "Look, honey, the water is pooling up in our yard and will be filtered as it soaks in and won't rush down to erode the banks of the stream that runs through our neighborhood nature park."

If you could be in our kitchen every time heavy rain comes, that is pretty much what you would hear!