Page "Grand Union Canal" Paragraph 30

From the Thames Lock, the canal and the River Brent are one and the same, and the waterway is semi-tidal until the double Gauging Lock ( lock 100 ) at Brentford is reached.

Just upstream of the Gauging Lock was a large canal basin, now known as Brentford Lock, from which the canal continues to follow the course of the River Brent through two more locks.

The river and canal part company at the base of the Hanwell flight of locks ( 92-97 ), before two more locks take the canal to Norwood Green.

It then heads westward over level ground through Southall, Hayes and West Drayton until it reaches the valley of the River Colne where it swings northward to Cowley through Uxbridge.