Six Mile Water River

Overview

The Six Mile Water River is a modest but picturesque waterway that flows through County Antrim in Northern Ireland before emptying into Lough Neagh, the island’s largest freshwater lake. Although its name suggests a short stream, the river stretches for about 26 mi (42 km) from its source in the hills west of Larne and north of Carrickfergus, winding past Ballynure, Ballyclare, Doagh, Parkgate, Templepatrick, Dunadry and finally Antrim town. Its gentle banks and historic surroundings make it a favourite for walkers, anglers, wildlife watchers and anyone seeking a quiet slice of Irish countryside. The river is most easily experienced as part of the Antrim Castle Gardens visitor route, where the water glistens beside 17th‑century Anglo‑Dutch canals, Victorian pleasure gardens and a 12th‑century motte.

History

The name “Six Mile Water” is thought to derive from a Norman marching distance: soldiers moving from Carrickfergus Castle calculated that they had covered six miles when they forded the river at what is now Ballyclare. Earlier the river was known as the Ollar (“river of the rushes”). Over the centuries the river shaped local settlement patterns, providing water for agriculture and powering a series of mills – Graingers Mill, a flax mill at Thorer’s Stretch and later a fur mill – whose ruins still line the Upper Town stretch. Today the river runs alongside the meticulously restored Antrim Castle Gardens, a 400‑year‑old estate that tells the story of the Massereene family and the evolution of garden design in Northern Ireland.

Angling

The Six Mile Water is a well‑known fishery managed by the Antrim & District Angling Association (A&DAA). The association issues day permits (available via their website at https://www.sixmilewater.co.uk) and oversees a stretch of more than 20 mi of river, from Doagh Bridge near Ballyclare to the river’s mouth at Lough Neagh in Antrim town.

• Key species – brown trout, salmon and the native dollaghan (a sea‑run brown trout). In 2004 over 200 salmon were recorded, one of the best returns in a century.
• Popular stretches –
  • Lower Town stretch (through the gardens of Clotworthy House, under Deerpark Bridge and onto the Lough shore) offers wider, deeper water and easy parking.
  • Upper Town stretch (through Graingers Mill, under Muckamore Bridge and the historic “Arches”, past Thorer’s Stretch and the Mill Race Trail) provides varied flow and historic interest.
  • Summerhill to Dunadry – a quieter, rural section with deep pools and a historic fort‑site at Dunadry.
  • Templepatrick stretch – a countryside walk beside the golf club and agricultural fields, with stiles maintained by the club.

Anglers are asked to respect the river’s ecology, keep to the footpaths and carry a valid permit or membership card. Permits can be bought online via the A&DAA site linked above.

Wildlife Watching

The slow‑moving waters support a rich assemblage of birds and mammals. Kingfishers, grey herons and red‑breasted mergansers are regular visitors, often perched on willow branches. Otters have been recorded along the lower stretch, leaving tell‑tale spraints on the banks. The river is the only place in Ireland where the fast‑water specialist river water‑crowfoot (Ranunculus fluitans) grows. Its long, emerald‑green submerged leaves form an underwater carpet that is legally protected. Local conservation work, notably by angler Michael Martin, has helped the population recover after a severe decline in 2008.

Conservation & Volunteer Opportunities

The Antrim & District Angling Association runs regular habitat‑enhancement projects, including the installation of salmon boxes at Barbour’s Weir and the maintenance of riffles that benefit both fish and water‑crowfoot. The Six Mile Water Trust (SMWT) organises river‑bank clean‑ups and monitors water quality. Visitors can report pollution to the Northern Ireland Environment Agency (NIEA) 24‑hour hotline 0800 80 70 60 and can join volunteer days advertised on the A&DAA website.

Recent Environmental Incidents

May 2024 – Four Mile Burn fish‑kill – Over 1 100 brown trout died after a slurry discharge from a farm near Doagh entered the Four Mile Burn, a tributary of the Six Mile Water. The incident prompted calls for stricter penalties and highlighted the river’s vulnerability (BBC, 20 May 2024).

October 2025 – Ballyclare fish‑kill – At least 100 dead trout were recorded near Ballyclare. NIEA inspectors deployed to assess impact; the incident is under investigation (Irish News, 7 Oct 2025).

October 2025 – Further kill near Ballyclare – A separate report in October 2025 described “numerous” dead fish, with estimates of over 100 large trout, prompting another NIEA inspection (SalmonBusiness, 17 Oct 2025).

These events underline the importance of reporting pollution promptly and supporting local conservation initiatives.

Flood Protection & Parks

A weir built in the 1800s at Ballyclare once powered a paper mill and now helps regulate water levels, reducing flood risk for downstream communities. The Six Mile Water River Park, created around the river in Ballyclare, provides additional flood‑defence capacity and offers well‑maintained pathways, a duck pond and open‑field scenery for families.

Walking & Cycling Routes

Antrim Castle Gardens & Lough Neagh River Walk (1.4 mi / 2.3 km)

A shared walking and cycling route starts at the Lough Shore car park, follows the river north‑east through willow‑lined banks, and finishes at the historic Antrim Castle Gardens. The path is well‑waymarked, suitable for families and wheelchair users, and offers frequent bird‑watching spots.

Six Mile Water River Park Circular Walk – Ballyclare (2.3 km)

A family‑friendly loop in Ballyclare begins at the car park off Mill Road (0.7 mi southwest of the town centre). The trail follows the winding banks, passes a duck pond and open fields before returning to the start. According to 10Adventures, the walk is rated Easy, takes about ½ hour, and is suitable year‑round. Pets are allowed on leash.

Connecting Trails

From the river walk you can continue onto the Antrim Loughshore Walk, head west to the Toome Canal viewpoint, or explore nearby woodlands such as Tardree Forest, Ballyboley Forest and Black Mountain. Detailed maps are available on the GPS‑Routes website.

Seasonal Events & Activities

Ranger‑led tours of the Antrim Castle Gardens are listed on the official website and run throughout the year, often coinciding with special events such as a St Patrick’s Day celebration in the gardens. The sensory garden features 2 m wide, wheelchair‑friendly paths and interactive plant displays, making it a hit with children and visitors with reduced mobility.

Practical Information

The river walk is completely self‑guided; no tickets are required. Ranger‑led tours and special events (e.g., St Patrick’s Day celebration) are listed on the official website and vary throughout the year. The trail is suitable for families with children, seniors and wheelchair users, thanks to the even surface and frequent resting points.

Getting There – The gardens lie on the Randalstown Road (BT41 4LH). From Belfast follow the A26 north to Antrim and turn onto the Randalstown Road signs for the gardens. Public transport includes local bus services to Antrim town centre; a short taxi ride brings you to the main entrance. For the Ballyclare circular walk, take the A26 north to Ballyclare and follow signs to Mill Road car park.

Whether you are tracing the historic waterway, trying your luck on the fishery, or simply enjoying a gentle riverside stroll, the Six Mile Water River provides a memorable slice of Northern Irish heritage.