An embankment is a wall built to prevent a river flooding. The Thames Embankment in London serves this purpose amongst others. It was built as the need for a modem sewerage system emerged in the mid-19th century, a tunnel for the underground District line was also built within the Embankment. Construction started in 1862 and one of London's main sewers was incorporated into the Embankment. Its robust construction meant that the sewer was still in use in the 21st century with almost no changes.
Containing the sewage had the added benefit of dramatically decreasing the number of cholera cases in London. While the Embankment successfully contains flooding. many waterfront houses and buildings were cut off from boat access, as a total of 22 acres of land was reclaimed from the river.

a. The sewer within the Embankment was in use throughout the 20th century.
b. Open sewage can lead to cholera.
c. A major sewer runs within the Embankment.
d. The Embankment was completed in 1874