Culvert in the context of "Blackstaff River"

Algeciras (Spanish: [alxeˈθiɾas] ) is a city and a municipality of Spain belonging to the province of Cádiz, Andalusia. With a registered population as of 2020 of 123,078, it’s the largest municipality of the Campo de Gibraltar and the second largest in the province. The city is located in the western shore of the Bay of Gibraltar (Bahía de Algeciras) opposite the Rock of Gibraltar, around the mouth of the Río de la Miel, now mostly culverted in its lower course near the southernmost end of the Iberian Peninsula and continental Europe and the Strait of Gibraltar.

The area was inhabited in Antiquity, including archaeological strata generally identified with the Roman city of Iulia Traducta. Founded soon after the Islamic conquest of the Iberian Peninsula on the mouth of the Río de la Miel, al-Jazira al-Khadrā [es] became the head of a rump taifa kingdom after Umayyad state collapse in the 11th century. In 1275, the Emirate of Granada ceded the place to the Marinids, who founded the new walled precinct of al-Bunayya after 1282 on the opposite bank of the Río de la Miel. The twin medinas were conquered in 1344 by the Crown of Castile. Medieval urban continuity came to an abrupt end when the town was torn down by the Nasrids circa 1369–1385. The ruins were repopulated and the town eventually refounded upon the arrival of refugees from the 1704 Anglo-Dutch capture of Gibraltar.

The Río de la Miel is a short river in the south of Spain, emptying into the Bay of Gibraltar at Algeciras. It falls over a distance of 350 metres including some waterfalls and working water mills. As the port of Algeciras expanded, docks on the river became marooned inland, and within the town much of the river is now culverted.

The literal translation of the name is the honey river.

The Nyamiha or Nemiga (Belarusian: Няміга, [nʲaˈmʲiɣa]; Russian: Немига, [nʲɪˈmʲiɡə] ) is a river in Minsk. Today it is contained within a fabricated culvert. It discharges into the Svislach.

The first mention of the river in historical chronicles is connected with the disastrous Battle on the Nemiga River, which took place on the riverbank in 1067 when the forces of the prince of Kievan Rus' defeated the forces of Polatsk princedom. The medieval epic The Tale of Igor's Campaign refers to the "bloody river banks of Nyamiha," with lines that detail the battle:

The River Sheaf in Sheffield, South Yorkshire, England, flows northwards, past Dore, through Abbeydale and north of Heeley. It then passes into a culvert, through which it flows under the centre of Sheffield before joining the River Don. This lower section of the River Sheaf, together with the Don between the Blonk Street and Lady's Bridges, formed two sides of the boundary of Sheffield Castle.

The main tributaries of the Sheaf are the Porter Brook, which joins it beneath Sheffield Midland station, and the Meers Brook. The river has been polluted upstream through centuries of industrial activity, including iron and steel working, and is only slowly recovering. The river used to provide the power for metal works such as the Grade I-listed Abbeydale Industrial Hamlet.

Chichester (/ˈtʃɪtʃɪstər/ CHITCH-ist-ər) is a cathedral city and civil parish in the Chichester district of West Sussex, England. It is the only city in West Sussex and is its county town. It was a Roman and Anglo-Saxon settlement and a major market town from those times through Norman and medieval times to the present day. It is the seat of the Church of England Diocese of Chichester and is home to a 12th-century cathedral.

The city has two main watercourses: the Chichester Canal and the River Lavant. The Lavant, a winterbourne, runs to the south of the city walls; it is hidden mostly in culverts when close to the city centre.

The Saw Mill River is a 23.5-mile (37.8 km) tributary of the Hudson River in Westchester County, New York, United States. It flows from an unnamed pond north of Chappaqua to Getty Square in Yonkers, where it empties into the Hudson as that river's southernmost tributary. It is the only major stream in southern Westchester County to drain into the Hudson instead of Long Island Sound. It drains an area of 26.5 square miles (69 km), most of it heavily developed suburbia. For 16 miles (26 km), it flows parallel to the Saw Mill River Parkway, a commuter artery, an association that has been said to give the river an "identity crisis."

The watershed was settled by the Dutch in the 17th century. The land was long owned by Frederick Philipse I and his descendants as Philipsburg Manor, site of Philipse Manor Hall, until the family lost it at the end of the American Revolution. The land along the river was later divided into multiple towns. Industry in Yonkers developed along the Saw Mill, so polluting the river by the end of the 19th century that a local poet called it a "snake-like yellow scrawl of scum". In the 1920s, the last half-mile (800 m) of the stream was routed into culverts under downtown Yonkers, a process partially reversed in the early 21st century when it became the first major New York waterway to be daylighted.

Muammar Gaddafi, the former leader of Libya, was killed by the National Transitional Council (NTC) on 20 October 2011 after the Battle of Sirte. Gaddafi was captured by NTC forces and executed shortly afterwards.

The NTC initially claimed Gaddafi succumbed to injuries sustained in a firefight when loyalist forces attempted to free him, although a video of his last moments shows rebel fighters dragging Gaddafi out of a drainage pipe, beating him and one of them sodomizing him with a bayonet before he was shot several times.

51°30′39″N 0°6′16″W / 51.51083°N 0.10444°W / 51.51083; -0.10444

The River Fleet is the largest of London's subterranean rivers, all of which today contain foul water for treatment. It has been used as a culverted sewer since the development of Joseph Bazalgette's London sewer system in the mid-19th century with the water being treated at Beckton Sewage Treatment Works. Its headwaters are two streams on Hampstead Heath, each of which was dammed into a series of ponds—the Hampstead Ponds and the Highgate Ponds—in the 18th century. At the southern edge of Hampstead Heath these descend underground as sewers and join in Camden Town. The waters flow 4 miles (6 km) from the ponds.