Translation guide
A culvert is a tunnel or pipe that carries water under a road, railway, or embankment. In Japanese, the most common and natural term is 暗渠 (あんきょ), but other words exist depending on context and technicality.
The learner wants to refer to a culvert in everyday or general contexts, such as a pipe under a road.
The standard Japanese word for a culvert, meaning a covered drain or underground water channel. Used in both everyday and technical contexts.
道路の下に暗渠が埋設されている。
A culvert is buried under the road.
Loanword from English, used in engineering and construction contexts. Understandable but less common than 暗渠 in general speech.
このカルバートは老朽化している。
This culvert is deteriorating.
Literally 'drainage pipe'. Can refer to a culvert pipe specifically, but is a broader term for any drainage pipe. Use when emphasizing the pipe aspect.
排水管が詰まっている。
The drainage pipe is clogged.
The learner wants to refer to a smaller, often open or covered drainage channel, like a roadside ditch.
Refers to a roadside ditch or gutter, often covered with a grate. Commonly seen along roads.
側溝に落ち葉が溜まっている。
Fallen leaves have accumulated in the roadside ditch.
General term for a drainage ditch or gutter. Can be open or covered.
The learner wants to describe a large-scale culvert, such as a major underground waterway.
Means 'underground drainage channel'. Used for larger infrastructure projects.
この地下排水路は洪水を防ぐために建設された。
This underground drainage channel was built to prevent flooding.
Specifically refers to culvert drainage systems, often used in agricultural or civil engineering contexts.
農地に暗渠排水を設置する。
Install culvert drainage in the farmland.
暗渠 is the standard Japanese word and is understood by everyone. カルバート is a technical loanword used mainly by engineers. In everyday conversation, stick with 暗渠.
Clean the drainage ditch.