A proposed lagoon to control tidal flooding in the Humber Estuary would render the River Hull non-tidal.

[1] In 1971, the Yorkshire Rivers Authority engaged Mcdonald & Partners as engineers on the project, with the Shankland Cox Partnership as architects.

[3] The location chosen for the barrier is quite close to where the river empties into the Humber Estuary on the site of the old Ha'penny Bridge.

[6] Construction on the barrier was started in January 1977, with projected opening date of August 1979, however, difficulties in the building phase led to schedule slipping.

[10] The large barrier is stationed in a horizontal position when not in use, but rotates 90 degrees and is lowered when a tidal surge is forecast.

[17] Writing in The Buildings of England; Yorkshire : York and the East Riding, David Neave said that it was; "..an elegant arch..." and "at night when the glazed staircases to each tower are illuminated, it is a prominent landmark.