How to implement flood defences on rivers.

Accidentally

Athlone is another wonderful example. Concrete over your floodplain with a shopping center and housing developments, and then complain when they flood. Who'd have guessed.

Sam Russell

Enniscorthy is another example.

DumbBrunette

Bumping this thread with details of the Crossmolina flood relief scheme, which has just started construction. A very impressive scheme which involves digging a new river 'bypass' of Crossmolina town, realigning several roads and building two new bridges. Total cost 34m.

https://www.rte.ie/news/connacht/2025/0307/1500806-crossmolina-flood-relief-scheme/

magicbastarder

again, we're seeing reactive rather than proactive measures.

Capt'n Midnight

Stop draining marginal land especially where the costs exceed the value added.

Bring back beavers.

Sam Russell

We need flood plains as somewhere to store flood water rather than speeding it to the sea.

There are many ways of slowing the flood water, but a system of managing it is vital. The current approach of building flood defences to stop flooding towns and villages just moves the flood down stream.

Beavers do a good job of damming rivers and slowing them down.

magicbastarder

rewild the uplands. i don't know where the river deel rises, but if it's say in marginal land that's used to graze sheep, it'd make sense to rewild that land so it acts more like a sponge and releases the rainwater more slowly.