310 Gathering the pieces
Drainage basin for water supply mainly covered by intensive cropland.
Kagoshima, London, Mexico City
Wat er-supply drainage basin close to metro area.Abeche, Bamako,
Kagoshima, Seoul, Tegucigalpa
Main reservoir for water supply, recreation, and aesthetics polluted.Beijing (one
of two), Brasilia (replaced by small distant reservoirs)
Wat er supplymainlyfromstreamssubjecttodrought and human impacts.
Tegucigalpa
Watersupply from groundwater wells subject to pollution and drought.Abeche,
Bamako
Best aquifer in relatively dry region threatened by development.Barcelona
Watertable dropped and water bodies dried out in central portion of region.
Mexico City
Wetlands (subject to drought) providing major water source for irrigation system.
Bangkok
Fewrivers/major streams still surrounded by natural vegetation cover.Atlanta,
Bucharest, Cairo, Chicago, Cuttack, Edmonton, Kagoshima,
Mexico City, Rome, Sapporo
Main rivers/streams usually reduced to low f low or trickle. Barcelona, El Paso
(USA), Mexico City
Lakes mainly ringed by cropland, and exhibiting sedimentation/water quality
problems.Rome, Minneapolis/St. Paul (USA), Chicago
Nomajor surface water body near city.Abeche, Beijing, Houston (USA),
Johannesburg, Madrid, Mexico City, Milan, NairobiTransportation, development, industry, pollution
Large number of major radial highways, all reaching urban region boundary.
Atlanta,London, Moscow
Ring highway mainly outside metro area, with extensive development beyond.
Bangkok, Beijing (concentric ring roads), Boston, Mexico City,
Milan, Rome, San Antonio (USA)
Two-lane ring road likely to be widened and catalyze widespread development.
Bucharest, Moscow
Main roads and bridges periodically impassable due to f looding.Abeche,
Cuttack, Rahimyar Khan
Limited main-road access between metro area and much of region.Abeche,
Cuttack, Erzurum
High level of annual vehicle-kilometers (miles) traveled per person.Atlanta
Shipping/ferry port located far from city center.Bangkok, Cairo, Santiago