 Of the rest of the land, or 17.7% is settled (buildings or roads), or 0.2% is either rivers or lakes and or 0.7% is unproductive land.Of the built up area, industrial buildings made up 2.2% of the total area while housing and buildings made up 9.7% and transportation infrastructure made up 1.8%.Power and water infrastructure as well as other special developed areas made up 2.7% of the area while parks, green belts and sports fields made up 1.3%.