Streams and rivers with a gauge whose water joins the Thames Tideway above one of its gauges, from the source down. The river map knows where gauges are, not every stream, so a tributary without a gauge is not listed here.
8 gauged tributaries, 346 gauges
Each tributary’s water passes the gauge it joins above and every gauge below it on the Thames Tideway, and none of the gauges above where it joins. For each, the gauge nearest the Thames Tideway is shown; its own page lists the rest.
Joins the Thames Tideway above Richmond, its highest gauge, no more than 5.7 km by river above Richmond. Nearest the Thames Tideway: Teddington Lock Normal; 258 more gauges further up. Gauged streams joining it: Swill Brook, Ampney Brook, Marston Meysey Brook, River Churn, River Key, River Ray, River Cole, River Coln, River Leach, River Windrush, Shill Brook, River Evenlode, Bulstake Stream, River Cherwell, Seacourt Stream, Hinksey Stream, Ginge Brook, River Ock, River Stert, River Thame, Mill Brook, River Pang, Sulham Brook, River Kennet, River Loddon, River Wye, The Cut, White Brook, Jubilee River, Colne Brook, River Colne, Wraysbury River, River Wey, The Bourne, River Ash, River Mole and Hogsmill River.
Joins the Thames Tideway between Richmond and Westminster, no more than 11.8 km by river above Westminster. Nearest the Thames Tideway: Barnes Normal; 7 more gauges further up. Gauged streams joining it: Pyl Brook.
Joins the Thames Tideway between Richmond and Westminster, no more than 20.2 km by river above Westminster. Nearest the Thames Tideway: Brentford old reading; 12 more gauges further up. Gauged streams joining it: Dollis Brook, Silk Stream and Wealdstone Brook.
Joins the Thames Tideway between Richmond and Westminster, no more than 24.4 km by river above Westminster. Nearest the Thames Tideway: Marsh Farm Normal; 7 more gauges further up. Gauged streams joining it: Yeading Brook.
Joins the Thames Tideway between Richmond and Westminster, no more than 11.9 km by river above Westminster. Nearest the Thames Tideway: Summerstown Normal; 7 more gauges further up.
Joins the Thames Tideway between Tower Pier and Charlton, no more than 12.4 km by river above Charlton. Nearest the Thames Tideway: Lea Bridge Normal; 32 more gauges further up. Gauged streams joining it: River Ash, River Lea, Pymme's Brook, Salmon's Brook, Small River Lee and Turkey Brook.
Joins the Thames Tideway between Tower Pier and Charlton, no more than 10.5 km by river above Charlton. Nearest the Thames Tideway: Manor House Gardens Normal; 6 more gauges further up. Gauged streams joining it: Kyd Brook.
Joins the Thames Tideway between Tower Pier and Charlton, no more than 11.5 km by river above Charlton. Nearest the Thames Tideway: Catford Hill Normal; 9 more gauges further up. Gauged streams joining it: River Pool.
Where the Thames Tideway goes
No gauge below Southend is known on the river map.
Tributaries and where they join are traced on the river map (OS Open Rivers, edition 2026-04) and the Environment Agency’s links between its gauges. The map holds distances between gauges, not the junctions themselves, so a junction is placed between two gauges, and no further up than the tributary’s own lowest gauge. Contains OS data © Crown copyright and database rights 2026.
