Definition link: Wikipedia
In urban design and urban planning, daylighting is the redirection of a stream into an above-ground channel. Typically, the goal is to restore a stream of water to a more natural state. Daylighting is intended to improve the riparian environment for a stream which had been previously diverted into a culvert, pipe, or a drainage system.
The term also refers to the public process toward such projects. A general consensus has developed that protecting and restoring natural creeks’ functions is achievable over time in an urban environment while recognizing the importance of property rights