The River Suir is the main character in a new four-part documentary series on TG4 that places the waterway and the communities along its banks centre stage.

Cois Siúire will premiere on Wednesday, April 1 at 9:30p.m and run for four weeks.

Produced by Cormorant Films and presented by Dr. Colm Mac Gearailt, with original music composed by Liam Ó Maonlaí, Cois Siúire is a four-part, 50-minute Irish language series that tells the story of the River Suir on prime-time television.

The series draws inspiration from the journey of writer Annraoi Ó Liatháin, whose travelogue Cois Siúire documented his passage along the river almost 50 years ago.

Now, historian and arts practitioner, Dr. Mac Gearailt retraces that journey in his canoe, using Ó Liatháin’s reflections as both guide and companion.

Ireland’s third longest river flows 183km from its source at the Devil’s Bit in Co. Tipperary, passing through Loughmore, Templemore, Thurles, Cahir, Ardfinnan, Newcastle, Clonmel, Carrick-on-Suir and Waterford city on its way to the Celtic Sea.

Yet despite its scale and significance, the Suir has rarely been explored in such comprehensive detail on screen.

Dr. Mac Gearailt encounters historians, artists, farmers, anglers and community custodians whose lives are shaped by the Suir.

Ancient abbeys, industrial remnants, mills, and river crossings stand alongside vibrant modern communities.

Through these stories, the river emerges not simply as a natural feature, but as a constant force in Ireland’s geographic, economic, spiritual and cultural development.

Liam Ó Maonlaí of the Hothouse Flowers composed the original score for the series, his signature musical flair bringing emotional depth and resonance to the river’s journey.

A continuation of the acclaimed river journeys that began in Cois Móire, Cois Siúire is both intimate and expansive: a cinematic meditation on place, language and identity, and a celebration of the communities that live along one of Munster’s great waterways.

This is a series that allows viewers to experience everything the Suir has to offer - its landscapes, stories, and people - from the comfort of their own armchair.