The stark warning is contained in new plans lodged by the resort with Clare Co Council for the 2.8km wall costing €10m on Doughmore beach at the golf resort.

Mr Trump’s Irish rock ‘wall’ is being put in place to prevent the golf course from being washed away by Atlantic storms.

In a planning application for the barrier, Trump resort consultants have told the council that the ‘do nothing’ scenario “will bring the viability of the entire resort and its potential closure into question”.

“In this event, this would result in a permanent and profound negative economic impact upon Doonbeg, its hinterland and the wider context of Co Clare,” say the consultants.

They also claim that “the failure to protect this asset would have a profound adverse and permanent effect on the local economy while the replacement costs for a rural economy such as Doonbeg would be considerable”.

The consultants, TIGL Ireland Enterprises, forecast the resort will generate €38m for the local economy over an eight-year period.

The 242-page environment impact statement lodged with the application states the resort and wider economy is missing out on millions of euro in the absence of a dedicated event centre.

The submission also confirms ambitions to stage an Irish Open.

The Trumps previously announced plans to build an event centre and leisure facilities at the resort.

In the environment impact statement, the consultants say in the absence of the investment, the resort would continue to miss out on some business, saying “the entire viability of the resort comes into question”.

A decision is due in April.