A drink-driver has been caught with a high blood alcohol reading at Hindmarsh Valley.

It will be alleged that about 11.45pm on Sunday 14 April, police stopped a black Porsche sedan on Adelaide Road for a random driver test.

The driver, a 24-year-old Encounter Bay man underwent a breath test and returned a positive reading of 0.221.

He was reported for drink-driving, issued a 12-month immediate loss of licence notice and his car was impounded for 28 days.

He will be summonsed to appear in court at a later date.