The teenage girl died when the car she was driving left the road at Kilaldry Bridge in Kilmoyler and entered the River Aherlow.
Two people have lost their lives in separate collisions in the South East in the last twenty-four hours.
A teenage girl has died following a single vehicle collision in Tipperary, while a woman in her 50s died in a crash involving a car and a lorry in Kilkenny.
The teenage girl died when the car she was driving left the road at Kilaldry Bridge in Kilmoyler and entered the River Aherlow.
Her body was recovered from the water this morning by members of the Garda Water Unit, and has been removed to the mortuary, where a post mortem exam is due to take place.
Meanwhile, in a separate incident, a woman in her 50s has died following a collision on the N25 near Glenmore, Kilkenny.
The collision, involving a lorry and a car, occurred around 10:30 am this morning.
The driver of the car, a woman in her 50,s was pronounced dead at the scene.
Gardai are appealing for any witnesses to either collision to contact them.

Body Found At Wheatfield Prison Sparks Garda Investigation
Families Could Face €1,000 Rise In Annual Food Bills Amid Farming Crisis
Over Half of Cigarette Packs Surveyed In Newbridge And Naas Had No Irish Duty Paid
Celbridge Brewery CEO Warns Of Mounting Costs Facing Craft Beer Sector
Amhrán na Laoch Songwriting Competition Confirmed for Irish Music Month 2026
Government Announces Major Overhaul of Anti-Money Laundering Rules
Maynooth University Hosts Special Solar Eclipse Event This Evening
Johnstown Mother Says Today's Solar Eclipse Means Something Extra Special For Her And Her Son