English to Russian Tech/Engineering Engineering (general) streams and tunnels

Daylighting is the term for restoration of an originally open-air watercourse which had at some point been diverted below ground back into an above-ground channel. Typically, the rationale behind returning the riparian environment of a stream, wash, or river to a more natural state is to reduce runoff, create habitat for species in need of it, or improve an area's aesthetics. In the UK, the practice is also known as deculverting.