Check a Mooring

Marina

Harefield Marina

Marina on the Grand Union Canal, 2.5 mi from Ruislip.

Gerrards CrossRuislipUxbridgeCoppermill Lock Water PointElsan point by Widewater LockCoppermill Lock Rubbish DisposalHarefield Marina Turning PointWidewater Winding HoleColne Junction Western Avenue Turning Point
Harefield MarinaWater pointElsanRubbishWinding holeAbout 6 miles across. Not a navigation chart.

Will your boat fit?

ft
ftin
BoatSizeFit
Narrowboat57ft × 6ft 10inFits
Hire boat45ft × 6ft 10inFits
Widebeam55ft × 10ftSome sections
Dutch barge60ft × 12ft 6inSome sections

Length 71ft 2in to 72ft (21.69–21.95 m), beam 7ft to 14ft (2.13–4.27 m)

Canal & River Trust waterway dimensions, last edited 26 Mar 2026. Where there are two figures, sections differ: "Some sections" means your boat fits the largest but not the smallest.

Length and beam only. Draught and headroom aren't checked yet.

On the water nearby

Water points

Coppermill Lock Water Point1.9 mi N
Broken2.9 mi S
Batchworth Lock Water Point3.5 mi N

Elsan disposal

Elsan point by Widewater Lock300 yd N
Batchworth Lock Elsan Point3.5 mi N
Cowley Lock Elsan Point3.8 mi S

Pump-out

None mapped within 5 miles.

Boat fuel

None mapped within 5 miles.

Rubbish disposal

Coppermill Lock Rubbish Disposal1.9 mi N
Cowley Lock Rubbish Disposal3.8 mi S

Winding holes

Harefield Marina Turning Point310 yd NW
Widewater Winding Hole0.4 mi N
Colne Junction Western Avenue Turning Point1.8 mi S

Locks

Widewater Lock380 yd N
Black Jacks Lock1.3 mi N
Denham Lock1.3 mi S

Straight-line distances. By boat it may be further.

Ashore, within a mile

Local shops

Londis0.4 mi NE
Best-one0.4 mi NE
Co-op Food0.7 mi W

Pubs

The River Garden310 yd NW

Cafés

Green Cafe0.7 mi SW

GP surgeries

Denham Medical Centre0.7 mi W

Post offices

Harvil Road Post Office0.4 mi NE

None mapped within a mile: supermarket, pharmacy, laundrette.

Straight-line distances from the mooring.

Getting here, and other moorings

Nearest railway station

Denham station0.7 mi SW

Other marinas and moorings

None mapped within 2 miles.

What we can't tell you yet

We only show these once we have them from the marina or a published source. Something wrong or missing on the map? Fix it in OpenStreetMap and it reaches this page at our next update.

Position 51.5847, -0.4843 · Open in OpenStreetMap