Tidal Rivers: Their (1) Hydraulics, (2) Improvement, (3) Navigation

15 feet 20 feet average banks barges bottom bucket buoys Canal carried channel clay Clyde coast constructed cost Crown 8vo cubic yards curves deepening deposit depth of water diameter direction discharge distance dredgers dredging effect Ellesmere Port engineer entrance estuary fathoms feet at low feet long feet wide float flow foot fresh water Glasgow groynes harbour height high water hopper hopper barges improvement increased jetties length light low water low-water material mattresses means Mersey miles an hour million cubic yards mouth navigation neap tides north channel obtained Ordnance datum outfall particles piers port Port Glasgow pumps quantity raised removed rise rock Rouen Runcorn sand scour ships shoals shore side sill spring tides square miles stone stream sufficient Sulina branch surface tidal current tidal river tidal water tonnage tons training walls Trinity House Tyne upper varying velocity vessels wave width