Ключевые слова: bank, closure, connection, conservation, construction, drain, drainage, end, engineer, engineering, environment, environmental pollution, equipment, flexible, flood, forgotten, gas, gravel, impact, industry, influence, installation, iron, laying, leaking, narrow, nature conservation, open, out of order, out of service, pipe, pipeline, piping, plastic, plumbing, pollution, protection, pump, river bank, riverbank, rocks, sewage, sewer, shore, stones, urban, water, water pipe, waves, work,