Shallow gutter typical of late 20th century low density suburbs

A street gutter is a depression running parallel to a road designed to collect rainwater flowing along the street and divert it into a storm drain. A storm drain, storm sewer ( US) stormwater drain ( Australia and New Zealand) or surface water system ( UK) Where a curbstone is present, a gutter may simply be formed by the convergence of the road surface and the vertical face of the sidewalk; otherwise, a dedicated gutter surface made of concrete may be present. A curb or kerb (see spelling differences) is the edge where a raised pavement/sidewalk/footpath, Road median, or Road shoulder A sidewalk (chiefly North American English) pavement ( British English and Philadelphia dialect) footpath ( Australian English A gutter alleviates water buildup on a street, allowing pedestrians to pass without walking through puddles and reducing the risk of hydroplaning by road vehicles. Hydroplaning or aquaplaning by a Road Vehicle occurs when a layer of Water builds between the Rubber Tires of the vehicle

Not all streets have gutters, and they are most often found in areas of a city which experience high pedestrian traffic. In past centuries when urban streets did not necessarily have sanitary sewers, gutters were made deep enough to serve. A sanitary sewer (also called especially in the UK a foul sewer) is a type of underground carriage system for transporting Sewage from houses or industry to