Restoring Urban Rivers
In many cities, rivers that were once hidden inside concrete channels are being brought back into the open. These projects, which often take several years to complete, aim to improve water quality and create more (17) ________ habitats for wildlife. Removing hard barriers can also allow rivers to move more (18) ________, reducing the speed of floodwater after heavy rain. Restoration is rarely a simple process. Engineers must consider nearby roads and buildings, while ecologists study the likely (19) ________ of any changes on fish and plants. Public (20) ________ is also important because construction can temporarily disrupt local life. When projects succeed, however, the results can be (21) ________. New paths encourage walking and cycling, and access to water may improve residents' sense of (22) ________. Some schemes have even led to the (23) ________ of species that had disappeared from the area. For planners, the long-term (24) ________ is to make rivers part of the city again.