Stations are listed from source to mouth as the water flows, traced on the river map (OS Open Rivers) and the Environment Agency’s own links between its gauges. A distance “by river” is along the river, and is shown only where the map traces the path.
Streams and rivers with a gauge whose water joins the Parrett above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.
9 gauged tributaries, 27 gauges
Each tributary’s water passes the gauge it joins above and every gauge below it on the Parrett, and none of the gauges above where it joins. For each, the gauge nearest the Parrett is shown; its own page lists the rest.
Joins the Parrett above Westover Pumping Station, no more than 4.5 km by river above Westover Pumping Station. Nearest the Parrett: MidelneyNormal; 2 more gauges further up.
Joins the Parrett between West Quay and Dunball Tidal, no more than 160 m by river above Dunball Tidal. Nearest the Parrett: DunballNormal; 1 more gauge further up.
Where the Parrett goes
No gauge below Dunball Tidal is known on the river map.
Named streams on the river map that flow into the Parrett and have no gauge of their own. Each has a page with what is known about it: the next gauge downstream, and any storm overflows or water-sampling points placed on it.
Broad River (joins about 2.1 km above Chiselborough)
90 storm overflows are traced upstream of Dunball Tidal, the Parrett’s lowest gauge on the river map: on the Parrett itself, on its gauged tributaries, and on smaller streams that join above there.
0 report discharging now
89 not discharging
1 offline or silent: 0 monitor offline, 0 status unknown, 1 no live feed
Official figures for 2025, for the overflows traced upstream of Dunball Tidal: 2,171 spills over 25,093 hours in total, across all 90.
Each overflow is listed in the stretch above the first gauge its water reaches, from the source down, as on the Gauges tab. A stretch of the Parrett includes the smaller streams that join it there. Every overflow traced is listed here, each stretch in full. Back to the short lists →
Above Chiselborough, the Parrett’s highest gauge5 overflows
South Perrott WwTWNot discharging Wessex Water · into River Parrett · 9.4 km by river above Chiselborough · 2025: 37 spills, 341 h
Hardington Mandeville WrcNo live feed Wessex Water · into Chinnock Brook · 5.8 km by river above Chiselborough · 2025: 46 spills, 655 h
Haselbury Plucknett WrcNot discharging Wessex Water · into Small Brook · 4.4 km by river above Chiselborough · 2025: 83 spills, 1,315 h
East Chinnock WwTWNot discharging Wessex Water · into Chinnock Brook · 4.4 km by river above Chiselborough · 2025: 50 spills, 612 h
The Garage PSNot discharging Wessex Water · into The Chinnock Brook(S) · 1.2 km by river above Chiselborough · 2025: 20 spills, 96 h
Between Chiselborough and Gaw Bridge4 overflows
Lopen Pumping StationNot discharging Wessex Water · into Lopen Brook · 10.9 km by river above Gaw Bridge · 2025: 5 spills, 67 h
Norton Sub Hamdon Pumping StationNot discharging Wessex Water · into Tributary Of River Parrett · 7.8 km by river above Gaw Bridge · 2025: 35 spills, 414 h
Martock Wastewater Treatment WorksNot discharging Wessex Water · into Parrett And Hinton Meads Brook · 1.3 km by river above Gaw Bridge · 2025: 19 spills, 85 h
Between Gaw Bridge and West Sedgemoor Pumping Station5 overflows
Pitney Pumping StationNot discharging Wessex Water · into Tributary Of Low Ham Rhyne · 11.5 km by river above West Sedgemoor Pumping Station · 2025: 35 spills, 484 h
Wagg Bridge Pumping StationNot discharging Wessex Water · into Wagg Rhyne · 10.5 km by river above West Sedgemoor Pumping Station · 2025: 7 spills, 84 h
Wagg Drove Pumping StationNot discharging Wessex Water · into Wagg Drove Rhyne · 9.4 km by river above West Sedgemoor Pumping Station · 2025: 0 spills, 0 h
Pibsbury Pumping StationNot discharging Wessex Water · into Long Sutton Catchwater · 9.2 km by river above West Sedgemoor Pumping Station · 2025: 62 spills, 1,393 h
Somerton Road Combined Sewer OfNot discharging Wessex Water · into Northstreet Moor Rhyne Via Sws · 6.6 km by river above West Sedgemoor Pumping Station · 2025: 36 spills, 35 h · reaches the river through a sewer, so where it enters is approximate
River Tone, above Bishops Hulljoins the Parrett above West Quay8 overflows
Westford Pumping StationNot discharging Wessex Water · into Westford Stream · 14.1 km by river above Bishops Hull · 2025: 3 spills, 18 h
The Basins Sewer CSONot discharging Wessex Water · into Back Stream Via Sws · 13.3 km by river above Bishops Hull · 2025: 0 spills, 0 h · reaches the river through a sewer, so where it enters is approximate
Wellington WwTWNot discharging Wessex Water · into Tributary Of River Tone · 11.7 km by river above Bishops Hull · 2025: 31 spills, 223 h
Station Mills CSONot discharging Wessex Water · into River Tone Via Sws · 11.6 km by river above Bishops Hull · 2025: 2 spills, 0.2 h · reaches the river through a sewer, so where it enters is approximate
Milverton WwTWNot discharging Wessex Water · into Hillfarrance Brook · 9.7 km by river above Bishops Hull · 2025: 35 spills, 444 h
West Buckland Pumping StationNot discharging Wessex Water · into Trib Of River Tone (S) · 7.9 km by river above Bishops Hull · 2025: 9 spills, 44 h
Tone Green Pumping StationNot discharging Wessex Water · into River Tone · 5.5 km by river above Bishops Hull · 2025: 12 spills, 196 h
Bradford On Tone WwTWNot discharging Wessex Water · into River Tone · 4.8 km by river above Bishops Hull · 2025: 53 spills, 619 h
River Tone, above Taunton Marketjoins the Parrett above West Quay4 overflows
Taunton Trull East Brook CSONot discharging Wessex Water · into Sherford Stream · 4.7 km by river above Taunton Market · 2025: 2 spills, 7.3 h
Newbarn Park CSONot discharging Wessex Water · into Galmington Stream Via Sws · 3.3 km by river above Taunton Market · 2025: 0 spills, 0 h · reaches the river through a sewer, so where it enters is approximate
Mountway Bishops Hull CSONot dischargingbathing water Wessex Water · into River Tone · 2.8 km by river above Taunton Market · 2025: 11 spills, 20 h
Wilton Orchard Car Park CSONot discharging Wessex Water · into Gaol Stream Via Sws · 1.4 km by river above Taunton Market · 2025: 0 spills, 0 h · reaches the river through a sewer, so where it enters is approximate
River Tone, above Bathpool Outfalljoins the Parrett above West Quay4 overflows
Taunton Market CSONot discharging Wessex Water · into River Tone · 2.3 km by river above Bathpool Outfall · 2025: 1 spill, 0.5 h
Priory Storm TanksNot discharging Wessex Water · into River Tone(S) · 1.7 km by river above Bathpool Outfall · 2025: 19 spills, 175 h
Priory Storm TanksNot discharging Wessex Water · into River Tone(S) · 1.7 km by river above Bathpool Outfall · 2025: 33 spills, 336 h
Maidenbrook Pumping StationNot discharging Wessex Water · into River Tone · 750 m by river above Bathpool Outfall · 2025: 0 spills, 0 h
River Tone, above Currymoor Pumping Stationjoins the Parrett above West Quay5 overflows
Mill Lane No. 2 CSONot discharging Wessex Water · into Trib Of Broughton Brook · 18.5 km by river above Currymoor Pumping Station · 2025: 7 spills, 6.8 h
Stoke Road Combined Sewer OverflowNot discharging Wessex Water · into Black Brook · 15.5 km by river above Currymoor Pumping Station · 2025: 2 spills, 0.2 h
Hyde Lane Pumping StationNot discharging Wessex Water · into River Tone · 12.2 km by river above Currymoor Pumping Station · 2025: 19 spills, 151 h
North End Pumping StationNot discharging Wessex Water · into Trib Of River Tone · 11.1 km by river above Currymoor Pumping Station · 2025: 1 spill, 1.5 h
Barton Lane Pumping StationNot discharging Wessex Water · into The River Tone · 10.8 km by river above Currymoor Pumping Station · 2025: 0 spills, 0 h
Norton Brook, above Halsewaterjoins the Tone2 overflows
Combe Florey STWNot discharging Wessex Water · into Tributary Of The Back Stream · 10.4 km by river above Halsewater · 2025: 3 spills, 16 h
Bishops Lydeard WwTWNot discharging Wessex Water · into Back Stream · 5.7 km by river above Halsewater · 2025: 13 spills, 167 h
Old River Tone, above Bathpool Outfalljoins the Tone1 overflow
Allens Brook CSONot discharging Wessex Water · into Allen's Brook · 2.3 km by river above Bathpool Outfall · 2025: 17 spills, 144 h
Between West Quay and Dunball Tidal1 overflow
Wembdon Common Pumping StationNot discharging Wessex Water · into Crowpill Rhyne(S) · 5.7 km by river above Dunball Tidal · 2025: 2 spills, 6.2 h
Castle Cary Water Recycling CentreNot discharging Wessex Water · into River Cary · 43.8 km by river above Bradney · 2025: 22 spills, 274 h
Kingsdon Pumping StationNot discharging Wessex Water · into Trib Of Park Brook · 27.1 km by river above Bradney · 2025: 45 spills, 894 h
Rookery Farm PSNot discharging Wessex Water · into Bull Brook · 24.4 km by river above Bradney · 2025: 49 spills, 1,002 h
New Hill CSONot discharging Wessex Water · into Tributary Of River Cary · 20.7 km by river above Bradney · 2025: 1 spill, 0.1 h
Somerton STWNot discharging Wessex Water · into Trib Of River Cary() · 19.1 km by river above Bradney · 2025: 56 spills, 1,146 h
River Isle, above Donyattjoins the Parrett above Westover Pumping Station4 overflows
Combe St Nicholas WwTWNot discharging Wessex Water · into River Isle · 6.2 km by river above Donyatt · 2025: 11 spills, 138 h
Dowlish Wake WwTWNot discharging Wessex Water · into Dowlish Brook · 4.6 km by river above Donyatt · 2025: 1 spill, 1.3 h
Dowlish Wake WwTWNot discharging Wessex Water · into Dowlish Brook · 4.6 km by river above Donyatt · 2025: 19 spills, 208 h
Chard Wastewater Treatment WorksNot discharging Wessex Water · into River Isle · 2.9 km by river above Donyatt · 2025: 21 spills, 215 h
River Isle, above Ashford Milljoins the Parrett above Westover Pumping Station5 overflows
Donyatt Pumping StationNot discharging Wessex Water · into River Isle · 8.1 km by river above Ashford Mill · 2025: 12 spills, 87 h
Donyatt Water Recycling CentreNot discharging Wessex Water · into River Isle · 7.8 km by river above Ashford Mill · 2025: 20 spills, 130 h
Broadway Watstewater Treatment WorkNot discharging Wessex Water · into River Ding · 5.6 km by river above Ashford Mill · 2025: 64 spills, 974 h
Ilminster WwTWNot discharging Wessex Water · into River Isle · 4.7 km by river above Ashford Mill · 2025: 41 spills, 491 h
Frost Lane Pumping StationNot discharging Wessex Water · into Cad Brook · 2.2 km by river above Ashford Mill · 2025: 21 spills, 235 h
River Isle, above Midelneyjoins the Parrett above Westover Pumping Station4 overflows
Hatch Beauchamp WrcNot discharging Wessex Water · into Fivehead River · 15.4 km by river above Midelney · 2025: 70 spills, 432 h
Ashill STWNot discharging Wessex Water · into Venner's Water(S) · 15.1 km by river above Midelney · 2025: 72 spills, 431 h
Ilton Water Recycling CentreNot discharging Wessex Water · into Tributary Of The River Isle · 11.5 km by river above Midelney · 2025: 50 spills, 335 h
Fivehead Wastewater Treatment WorksNot discharging Wessex Water · into River Isle · 7.2 km by river above Midelney · 2025: 51 spills, 1,013 h
River Yeo, above Weston Bampfyldejoins the Yeo2 overflows
North Cadbury Water Recycling CentrNot discharging Wessex Water · into River Cam · 4.1 km by river above Weston Bampfylde · 2025: 44 spills, 335 h
Sparkford WrcNot discharging Wessex Water · into The River Cam · 110 m by river above Weston Bampfylde · 2025: 74 spills, 540 h
River Yeo, above Sherborne Lakejoins the Parrett above Westover Pumping Station3 overflows
Charlton Horethorne WwTWNot discharging Wessex Water · into Bromers Brook · 11.8 km by river above Sherborne Lake · 2025: 21 spills, 176 h · placed on the river by its position alone
Milborne Port STWNot discharging Wessex Water · into Henover Brook(S) · 4.3 km by river above Sherborne Lake · 2025: 22 spills, 264 h · placed on the river by its position alone
Poyntington Water Recylcing CentreNot discharging Wessex Water · into River Yeo · 3.7 km by river above Sherborne Lake · 2025: 53 spills, 726 h
River Yeo, above Pen Milljoins the Parrett above Westover Pumping Station16 overflows
Leigh Bridge Farm Pumping StationNot discharging Wessex Water · into Trib Of River Wriggle · 16.7 km by river above Pen Mill · 2025: 16 spills, 94 h
Newland Combined Sewer OverflowNot discharging Wessex Water · into River Yeo Via Sws · 13.3 km by river above Pen Mill · 2025: 9 spills, 1.6 h · reaches the river through a sewer, so where it enters is approximate
Long Street CSONot discharging Wessex Water · into River Yeo Via Sws · 13.3 km by river above Pen Mill · 2025: 0 spills, 0 h · reaches the river through a sewer, so where it enters is approximate
63 Cheap Street CSONot discharging Wessex Water · into River Yeo Via Sws · 13.1 km by river above Pen Mill · 2025: 23 spills, 5.1 h · reaches the river through a sewer, so where it enters is approximate
Ludborne Road CSONot discharging Wessex Water · into River Yeo Via Sws · 13.1 km by river above Pen Mill · 2025: 10 spills, 13 h · reaches the river through a sewer, so where it enters is approximate
Thorn Bank CSONot discharging Wessex Water · into River Yeo Via Sws · 13.1 km by river above Pen Mill · 2025: 0 spills, 0 h · reaches the river through a sewer, so where it enters is approximate
Halstock Water Recycling CentreNot discharging Wessex Water · into Tributary Of The River Yeo · 12.6 km by river above Pen Mill · 2025: 82 spills, 1,424 h · placed on the river by its position alone
Westbury Combined Sewer OverflowNot discharging Wessex Water · into River Yeo Via Sws · 12.3 km by river above Pen Mill · 2025: 0 spills, 0 h · reaches the river through a sewer, so where it enters is approximate
Sherborne WwTWNot discharging Wessex Water · into River Yeo · 11.6 km by river above Pen Mill · 2025: 30 spills, 162 h
Sherborne WwTWNot discharging Wessex Water · into River Yeo · 11.6 km by river above Pen Mill · 2025: 35 spills, 392 h
Beer Hackett Pumping StationNot discharging Wessex Water · into Wriggle River · 10.8 km by river above Pen Mill · 2025: 50 spills, 791 h
Mill Lane Pumping StationNot discharging Wessex Water · into River Yeo · 5.8 km by river above Pen Mill · 2025: 3 spills, 16 h
Stoford Sewer Storm OverflowNot discharging Wessex Water · into Yeovil Yeo,trib Of The (S) · 4.4 km by river above Pen Mill · 2025: 21 spills, 138 h
Horsey Lane Combined Sewer OverflowNot discharging Wessex Water · into Dodham Brook · 2.7 km by river above Pen Mill · 2025: 15 spills, 19 h · placed on the river by its position alone
Coopers Mill CSONot discharging Wessex Water · into Dodham Brook · 2.5 km by river above Pen Mill · 2025: 25 spills, 13 h · placed on the river by its position alone
Wyndham Hill CSONot discharging Wessex Water · into Dodham Brook · 1.2 km by river above Pen Mill · 2025: 2 spills, 1.4 h · placed on the river by its position alone
River Yeo, above Ilchesterjoins the Parrett above Westover Pumping Station8 overflows
Yeovil (Pen Mill) WwTWNot discharging Wessex Water · into River Yeo · 15.5 km by river above Ilchester · 2025: 29 spills, 280 h
Sandford Orcas WrcNot discharging Wessex Water · into Tributary Of River Yeo · 13.7 km by river above Ilchester · 2025: 31 spills, 353 h
Mildmay Place CSONot discharging Wessex Water · into River Cam · 11.0 km by river above Ilchester · 2025: 13 spills, 62 h
Green Lane Pumping StationNot discharging Wessex Water · into River Cam · 10.7 km by river above Ilchester · 2025: 2 spills, 17 h
Marston Magna Pumping StationNot discharging Wessex Water · into River Yeo (S) · 10.6 km by river above Ilchester · 2025: 37 spills, 676 h
Mudford Pumping StationNot discharging Wessex Water · into River Yeo · 10.1 km by river above Ilchester · 2025: 11 spills, 77 h
Frog Lane Pumping StationNot discharging Wessex Water · into River Cam (S) · 8.5 km by river above Ilchester · 2025: 41 spills, 760 h
Yeovilton Weir Pumping StationNot discharging Wessex Water · into River Yeo (S) · 3.4 km by river above Ilchester · 2025: 50 spills, 483 h
River Yeo, above Huish Episcopi Pumping Stationjoins the Parrett above Westover Pumping Station2 overflows
Ilchester Pumping StationNot discharging Wessex Water · into River Yeo · 10.8 km by river above Huish Episcopi Pumping Station · 2025: 6 spills, 76 h
Ilchester Water Recycling CentreNot discharging Wessex Water · into River Yeo · 10.0 km by river above Huish Episcopi Pumping Station · 2025: 34 spills, 503 h
Above Westover Pumping Station2 overflows
Martock Wastewater Treatment WorksNot discharging Wessex Water · into Parrett And Hinton Meads Brook · 9.5 km by river above Westover Pumping Station · 2025: 39 spills, 482 h
Ducks LaneNot discharging Wessex Water · into Drayton Drain (S) · 4.6 km by river above Westover Pumping Station · 2025: 6 spills, 42 h
Near these gauges, connection not known
Within 3 km of one of the Parrett’s gauges in a straight line, but the river map cannot say whether their water reaches it.
East Quay Pumping StationNot dischargingbathing water Wessex Water · into River Parrett (E) · 130 m from West Quay in a straight line · discharges to the sea, an estuary or tidal water · 2025: 22 spills, 15 h
West Quay PSNot dischargingbathing water Wessex Water · into River Parrett (E) · 190 m from West Quay in a straight line · discharges to the sea, an estuary or tidal water · 2025: 1 spill, 5.0 h
Blake Gardens PSNot dischargingbathing water Wessex Water · into River Parrett(Tidal)(E) · 460 m from West Quay in a straight line · discharges to the sea, an estuary or tidal water · 2025: 0 spills, 0 h
Puriton SPSNot discharging Wessex Water · into Un-Named Ditch (S) · 680 m from Dunball Tidal in a straight line · no mapped watercourse close enough to be sure · 2025: 2 spills, 5.9 h
Chilton Street(Saltlands) PSNot dischargingbathing water Wessex Water · into River Parrett(Tidal)(E) · 830 m from West Quay in a straight line · discharges to the sea, an estuary or tidal water · 2025: 15 spills, 28 h
Colley Lane Pumping StationNot dischargingbathing water Wessex Water · into River Parrett(E) · 890 m from West Quay in a straight line · discharges to the sea, an estuary or tidal water · 2025: 11 spills, 28 h
The Coat Pumping StationNot discharging Wessex Water · into Tributary Of The River Parrett · 910 m from Gaw Bridge in a straight line · its watercourse is not on the river map · 2025: 20 spills, 77 h
Bristol Road S P StnNot dischargingbathing water Wessex Water · into Trib Of River Parrett · 1.4 km from West Quay in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 8 spills, 8.5 h
Taunton Road PSNot dischargingbathing water Wessex Water · into River Parrett(Tidal)(E) · 1.5 km from West Quay in a straight line · discharges to the sea, an estuary or tidal water · 2025: 15 spills, 34 h
Kingsbury Episcopi Pumping StationNot discharging Wessex Water · into Tributary Of River Parrett (S) · 1.8 km from Gaw Bridge in a straight line · no mapped watercourse close enough to be sure · 2025: 23 spills, 255 h
Merriott Wastewater Treatment WorksNot discharging Wessex Water · into Trib Of Goulds Brook · 1.8 km from Chiselborough in a straight line · no mapped watercourse close enough to be sure · 2025: 42 spills, 168 h
Merriott Wastewater Treatment WorksNot discharging Wessex Water · into Trib Of Goulds Brook · 1.8 km from Chiselborough in a straight line · no mapped watercourse close enough to be sure · 2025: 31 spills, 351 h
Vicarage Lane Pumping StationNot discharging Wessex Water · into Trib Of Parrett Estuary(S) · 1.9 km from Dunball Tidal in a straight line · discharges to the sea, an estuary or tidal water · 2025: 0 spills, 0 h
Hurst Combined Sewer OverflowNo live feed Wessex Water · into Trib Of Hinton Meads Brook · 1.9 km from Gaw Bridge in a straight line · no mapped watercourse close enough to be sure · 2025: 18 spills, 23 h
Over Stratton STWNot discharging Wessex Water · into Lopen Brook (S) · 2.2 km from Chiselborough in a straight line · no mapped watercourse close enough to be sure · 2025: 28 spills, 280 h
6 more near these gauges whose connection is not known.
Dated samples taken by the Environment Agency, not live readings. Results are published days to months after the sample is taken, and many points are sampled only a few times a year, or have not been sampled for years.
166 sampling points on the River Parrett and the streams that join it above Dunball Tidal. 78 have a sample from the last 12 months; 85 have any sample banked.
Sampled most recently, anywhere on the Parrett and its streams:
Hlfnce Bridge Abv HlfnceHillfarrance Brook · 5.8 km above Bishops HullLast sampled 1 Oct 2026 · 7 days agoOxygen 89.1%Temp 14.8 °CpH 8.09Ammonia below 0.03 mg/l
River Tone at Tone BridgeRiver Tone · 12 km above Bishops HullLast sampled 1 Oct 2026 · 7 days agoOxygen 93.7%Temp 14.4 °CpH 8.02Ammonia below 0.03 mg/l
Where, from the source down
Sampling points
Newest sample
River Yeo and its streamsjoins the Parrett above Westover Pumping Station
England's samples only. Each count opens the list of those points, nearest first, with the date of each one’s latest sample (the gauge’s “Upstream of here” list).
FloodRadar does not grade these results: there is no overall score, and official river classifications are a separate dataset. A sample taken downstream of an overflow does not by itself show where anything in it came from. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels.
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