Plizio Visual Lab
River Lagan
The River Lagan is a major waterway in Northern Ireland, flowing for approximately 70 kilometres from Slieve Croob to Belfast Lough. It rises in the mountains of County Down and meanders through agricultural lands before reaching the urban centre of Belfast. Historically, the Lagan played a central role during the Industrial Revolution, as it facilitated the transport of linen and coal and provided the foundation for the shipbuilding industry. The Lagan Navigation, a system of canals and locks, once connected the river to Lough Neagh, boosting trade in the 18th and 19th centuries. In recent decades, extensive regeneration projects have been undertaken to improve water quality and make the river corridor more attractive for recreational activities such as rowing and hiking. Today, the Laganside area in Belfast is a symbol of the city's modern transformation. The river also supports a rich variety of wildlife, including otters and numerous species of waterfowl.
Explore on the map
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A postcard from River Lagan
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Create a postcard- Location: Ireland
- Highlights: Queen Victoria Monument · Belfast City Hall · Titanic Memorial
- Nearby: Carrickfergus (15 km)
Best time to visit & climate
The most pleasant time to visit is Jun–Aug.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 5 | 5 | 6 | 8 | 11 | 13 | 15 | 14 | 13 | 10 | 7 | 5 |
| Rain mm | 93 | 74 | 76 | 62 | 77 | 90 | 99 | 106 | 82 | 109 | 105 | 95 |
📋 Practical info
Geography
Facts
- The river has a total length of approximately 70 kilometres.
- The source is located on the summit of Slieve Croob in County Down.
- The Laganside Weir was built in 1994 to regulate the water level.
- In the 19th century, the river was vital for the linen trade.
- The Lagan Navigation originally comprised 27 locks.
- In Belfast, the river flows into Belfast Lough and the Irish Sea.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
© OpenStreetMap contributors · OpenRouteService
Sights in the town River Lagan (10)
Lord Dufferin Monument
Memorial in Belfast, County Antrim, Northern Ireland, honouring Lord Dufferin.
Ulster Hall
Concert hall in Belfast, Northern Ireland, hosting music and cultural events.
Golden Thread Gallery
Contemporary art gallery in Belfast, featuring exhibitions and artist residencies.
The Dome at Victoria Square
Viewpoint atop the Victoria Square shopping centre in Belfast.
Catalyst Arts
Experimental art gallery in Belfast, supporting young and emerging artists.
Saint Malachy's
Church building in Belfast, County Antrim, Northern Ireland, serving the Catholic community.
Sights nearby
Frequently asked questions
Which major city does the River Lagan flow through?
What is the Lagan Towpath?
Can you go boating on the river?
Where does the Lagan rise?
Are there locks on the river?
River Lagan: where is it located?
River Lagan: what is there to see?
River Lagan: when is the best time to visit?
River Lagan: why is it worth visiting?
Nearby cities
