An extension of the Forth and Clyde Canal is also being built, along with a new sea lock on the River Carron.

BBC: Work to begin on new ?1m canal bridge in Grangemouth

Osney Lock Hydro (OLH) has planning permission for a water turbine on the River Thames at Osney Lock.

BBC: Oxford's Osney Lock hydroelectric plant cash total raised

West Oxford Community Renewables has planning permission for a water turbine on the River Thames at Osney Lock.

BBC: Design for Osney hydro plant

The Environment Agency warned on Sunday the site could become flooded due to rising water levels on the River Thames between Newbridge and Kings Lock.

BBC: Oxfordshire homes flooded due to heavy rain

Iowa State University economist Philip Baumel says the river, could get by with small fixes like extending lock chamber walls or replacing the first-come-first- serve system with a reservation system to relieve congestion.

FORBES: A river of subsidies

Phillip Baumel says the river could get by with small, much cheaper fixes like extending lock guide walls or replacing the first- come, first-served system with a reservation system to relieve congestion.

FORBES: A river of subsidies

The Canals and River Trust (CRT) legally hold health and safety responsibility for the lock and part of the weir.

BBC: Aaron Burgess Saltford Weir death was accidental

Christopher Brescia, president of Midwest Area River Coalition 2000, a lobbying arm for waterway users, is betting seven lock replacements will be needed over the next 25 years.

FORBES: A river of subsidies