32 storm overflows are traced upstream of Deeping St James, the Welland’s lowest gauge on the river map: on the Welland itself, on its gauged tributaries, and on smaller streams that join above there.
- 0 report discharging now
- 30 not discharging
- 2 offline or silent: 1 monitor offline, 0 status unknown, 1 no live feed
Official figures for 2025, for the overflows traced upstream of Deeping St James: 858 spills over 6,070 hours in total, across all 32.
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 Welland includes the smaller streams that join it there. Where a stretch or a tributary has more than 4, the 3 discharging now or nearest its gauge are listed, the rest are counted, and every one is in that gauge’s “Upstream of here” list. Show every overflow in every stretch →
Above Market Harborough, the Welland’s highest gauge1 overflow
- Lubenham SPS Not discharging
Anglian Water · into River Welland · 3.8 km by river above Market Harborough · 2025: 37 spills, 464 h
Between Market Harborough and Ashley10 overflows
- Market Harborough-Riverside Road Not discharging
Anglian Water · into River Welland Nt · 12.5 km by river above Ashley · 2025: 48 spills, 653 h - Welham No live feed
Anglian Water · into Unknown Trib. · 7.5 km by river above Ashley · 2025: 16 spills, 89 h · placed on the river by its position alone - Medbourne STW Not discharging
Anglian Water · into Medbourne Brook River Welland · 3.1 km by river above Ashley · 2025: 11 spills, 61 h
and 7 more: show all 10 overflows on this stretch → All above Ashley, nearest first →
Medbourne Brook, above Medbourne Flood Storage Reservoirjoins the Welland above Ashley2 overflows
- Hallaton STW Not discharging
Anglian Water · into Medbourne Brook River Welland · 1.4 km by river above Medbourne Flood Storage Reservoir · 2025: 155 spills, 1,126 h - St Giles Church SSO Not discharging
Anglian Water · into Trib Medbourne Brook · 1.5 km by river above Medbourne Flood Storage Reservoir · 2025: 27 spills, 11 h
River Jordan, above Litte Bowden Flood Storage Reservoirjoins the Welland above Ashley2 overflows
- Braybrooke SPS Not discharging
Anglian Water · into River Jordan · 3.6 km by river above Litte Bowden Flood Storage Reservoir · 2025: 10 spills, 92 h - Braybrooke Water Recycling Centre Monitor offline
Anglian Water · into R.jordan River Welland Nt · 3.0 km by river above Litte Bowden Flood Storage Reservoir · 2025: 2 spills, 0.5 h
Between Tixover and Hudds Mill2 overflows
- SSO Wothorpe Not discharging
Anglian Water · into Trib River Welland · 2.1 km by river above Hudds Mill · 2025: 16 spills, 86 h - Stamford - Castle Street CSO Not discharging
Anglian Water · into River Welland · 1.4 km by river above Hudds Mill · 2025: 10 spills, 4.3 h
Between Hudds Mill and Tallington1 overflow
- Stamford-Hudds Mill TPS Not discharging
Anglian Water · into River Welland · 6.0 km by river above Tallington · 2025: 3 spills, 35 h
River Gwash, and the streams that join itjoins the Welland above Tallington5 overflows
- Braunston Wrc Not discharging
Anglian Water · into River Gwash · 31.4 km by river above RYHALL PS · 2025: 31 spills, 31 h - Great Casterton SPS Not discharging
Anglian Water · into River Gwash · 6.6 km by river above RYHALL PS · 2025: 7 spills, 20 h - Great Casterton STW Not discharging
Anglian Water · into River Gwash River Welland Nt · 6.6 km by river above RYHALL PS · 2025: 0 spills, 0 h
and 2 more: show all 5 overflows on the Gwash and the streams that join it → All above BELMESTHORPE GS GSM, nearest first →
Between Tallington and Market Deeping1 overflow
- SSO St Andrews Church Not discharging
Anglian Water · into River Welland · 5.2 km by river above Market Deeping · 2025: 0 spills, 0 h
River Chater, above Fosters Bridgejoins the Welland above TINWELL GS WITS3 overflows
- North Luffenham TPS Not discharging
Anglian Water · into R Chater · 2.2 km by river above Fosters Bridge · 2025: 10 spills, 29 h - North Luffenham Wrc Not discharging
Anglian Water · into River Chater · 2.7 km by river above Fosters Bridge · 2025: 25 spills, 65 h - Wing STW Not discharging
Anglian Water · into River Chater · 9.5 km by river above Fosters Bridge · 2025: 29 spills, 64 h
Above TINWELL GS WITS3 overflows
- Collyweston STW Not discharging
Anglian Water · into River Welland Nt · 6.0 km by river above TINWELL GS WITS · 2025: 2 spills, 12 h - Aldgate/Ketton Pumping Station Not discharging
Anglian Water · into River Chater · 4.6 km by river above TINWELL GS WITS · 2025: 0 spills, 0 h - SPS Stamford Rd-Ketton Not discharging
Anglian Water · into River Chater · 3.8 km by river above TINWELL GS WITS · 2025: 14 spills, 93 h
Above BARROWDEN GS2 overflows
- Stoke Albany STW Not discharging
Anglian Water · into Tributary River Welland · 24.2 km by river above BARROWDEN GS · 2025: 12 spills, 152 h - Caldecott SPS Not discharging
Anglian Water · into Eye Brook · 14.5 km by river above BARROWDEN GS · 2025: 14 spills, 203 h
Near these gauges, connection not known
Within 3 km of one of the Welland’s gauges in a straight line, but the river map cannot say whether their water reaches it.
- Drayton Not discharging
Anglian Water · into Trib River Welland · 1.3 km from Ashley in a straight line · its watercourse is not on the river map · 2025: 22 spills, 95 h - Bainton PS No live feed
Anglian Water · into Trib R Welland · 1.6 km from Tallington in a straight line · no mapped watercourse close enough to be sure · 2025: 8 spills, 42 h - Rutland Terrace CSO Not discharging
Anglian Water · into Mill Stream · 1.7 km from Hudds Mill in a straight line · no mapped watercourse close enough to be sure · 2025: 0 spills, 0 h
4 more near these gauges whose connection is not known.
1 other overflow within 3 km of these gauges is placed below the Welland’s lowest gauge or on another river, so not listed.
A status is the water company’s own monitor: it says whether an overflow is discharging, never how much or why, and a spill does not by itself explain a change in a river level. A status older than two hours is shown as unknown. Annual figures are the official returns: 12/24-hour spills for England and Wales, overflow events for Scotland (Scottish Water counts differently, so the two cannot be compared). “No data” means the monitor produced no usable data that year, not zero. Overflows are placed on OS Open Rivers (edition 2026-04), which leaves out many small channels: an overflow the map cannot place may still drain here. Contains OS data © Crown copyright and database rights 2026. Sewage in Britain’s rivers →
Live status: © Anglian Water storm overflow activity data, licensed under CC BY 4.0. Annual figures for England: Environment Agency Event Duration Monitoring return, © Environment Agency copyright and/or database right, Open Government Licence v3.0.