 Of the rest of the land, or 20.0% is settled (buildings or roads), or 3.3% is either rivers or lakes and or 2.0% is unproductive land.Of the built up area, industrial buildings made up 2.0% of the total area while housing and buildings made up 11.8% and transportation infrastructure made up 4.0%.while parks, green belts and sports fields made up 1.8%.