It is adjacent to Portland Basin, and the names are often used as synonyms by boaters, whilst locals refer only to Portland Basin.
Strictly speaking, Portland Basin is the wide area on the main line of the canal. The arm under the junction bridge, and the Tame aqueduct are part of the Ashton Canal, and the junction between the two canals occurs immediately at the southern end of the aqueduct.
WIPO ASSIGNS PATENT TO MIMOS BERHAD FOR "METHOD OF INCREASING THE POROSITY OF CERAMIC JUNCTION BRIDGE" (MALAYSIAN INVENTORS)
Sep 24, 2011; GENEVA, Sept. 24 -- Publication No. WO/2011/115472 was published on Sept. 22. Title of the invention: "METHOD OF INCREASING THE...