Live levels from 19 monitoring stations across Buckinghamshire, Essex, Greater London, Hertfordshire, Surrey…, updated every 15 minutes.
⚠️ Several distinct UK rivers share the name “River Colne” — sections below are grouped by catchment.
Gauges
River Colne — Colne (Upper)
3 stations in this catchment
| Station | Town | Level now | Status | Trend |
|---|
| London Colney | London Colney | 1.08 mASD 23m ago | Normal | — |
| ↓ 11.2 km by river |
| Watfordstructure | Watford | 0.19 mASD 23m ago | Normal | — |
| ↓ 8.4 km by river |
| Moor Lane | Rickmansworth | 7.44 mASD 29h ago | old reading | |
River Colne — Colne (Lower)
8 stations in this catchment
River Colne — Aire and Calder
4 stations in this catchment
River Colne — Essex
4 stations in this catchment
| Station | Town | Level now | Status | Trend |
|---|
| Great Yeldham | — | 0.09 mASD 22h ago | old reading | |
| ↓ 5.7 km by river |
| Poole Street | Castle Hedingham | 0.09 mASD 23m ago | Normal | — |
| ↓ downstream, distance by river not measured |
| Earls Colne | Colne Engaine | 0.13 mASD 23m ago | Normal | ▽ |
| ↓ 16.0 km by river |
| Lexden | Beacon End | 0.20 mASD 23m ago | Normal | — |
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.
Contains OS data © Crown copyright and database rights 2026.
Gauged tributaries
Streams and rivers with a gauge whose water joins the Colne above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.
River Colne — Colne (Upper) and Colne (Lower)
6 gauged tributaries, 24 gauges
Joins the Colne above London Colney, its highest gauge, no more than 8.2 km by river above London Colney.
Its water passes every gauge on the Colne, from London Colney down.
Joins the Colne between London Colney and Watford, no more than 6.2 km by river above Watford.
| Markyatestructure | -0.04 mASD 2h ago | Low |
| ↓ downstream, distance by river not measured |
| Redbournstructure | 0.04 mASD 23m ago | Normal |
| ↓ 14.6 km by river |
| Colney Street | 0.14 mASD 23m ago | Normal |
Its water passes Watford and every gauge below it on the Colne. It does not pass London Colney or the gauges above it.
Tykes Water name from the river map
Joins the Colne between London Colney and Watford, no more than 9.6 km by river above Watford.
Its water passes Watford and every gauge below it on the Colne. It does not pass London Colney or the gauges above it.
Gauged streams joining Tykes Water
Joins the Colne between Moor Lane and Denham Colne, no more than 11.9 km by river above Denham Colne.
Its water passes Denham Colne and every gauge below it on the Colne. It does not pass Moor Lane or the gauges above it.
Joins the Colne between Denham Colne and Willowbank, no more than 1.3 km by river above Willowbank.
Its water passes Willowbank and every gauge below it on the Colne. It does not pass Denham Colne or the gauges above it.
Fray's River name from the river map
Joins the Colne between Thorney Mill Road, West Drayton (Temporary) and Stanwell Mill, no more than 5.8 km by river above Stanwell Mill.
Its water passes Stanwell Mill and every gauge below it on the Colne. It does not pass Thorney Mill Road, West Drayton (Temporary) or the gauges above it.
Gauged streams joining the Fray's River
River Colne — Aire and Calder
5 gauged tributaries, 8 gauges
Joins the Colne between Marsden and Huddersfield Longroyd Bridge, no more than 7.3 km by river above Huddersfield Longroyd Bridge.
Its water passes Huddersfield Longroyd Bridge and every gauge below it on the Colne. It does not pass Marsden or the gauges above it.
Joins the Colne between Marsden and Huddersfield Longroyd Bridge, no more than 2.7 km by river above Huddersfield Longroyd Bridge.
Its water passes Huddersfield Longroyd Bridge and every gauge below it on the Colne. It does not pass Marsden or the gauges above it.
Joins the Colne between Huddersfield Longroyd Bridge and ICI Colne, no more than 3.8 km by river above ICI Colne.
Its water passes ICI Colne and every gauge below it on the Colne. It does not pass Huddersfield Longroyd Bridge or the gauges above it.
Gauged streams joining Fenay Beck
Joins the Colne between Huddersfield Longroyd Bridge and ICI Colne, no more than 3.2 km by river above ICI Colne.
Its water passes ICI Colne and every gauge below it on the Colne. It does not pass Huddersfield Longroyd Bridge or the gauges above it.
Joins the Colne between Huddersfield Longroyd Bridge and ICI Colne, no more than 4.6 km by river above ICI Colne.
Its water passes ICI Colne and every gauge below it on the Colne. It does not pass Huddersfield Longroyd Bridge or the gauges above it.
Gauged streams joining the Holme
River Colne — Essex
No gauged tributary joins the Colne above Lexden on the river map. Streams without a gauge are not counted here.
Where the Colne goes
Below Lexden, its water next reaches Colne Barrier, 12.9 km by river downstream.
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.
River Colne — Colne (Upper) and Colne (Lower)
Streams without a gauge
Named streams on the river map that flow into the Colne 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.
River Colne — Aire and Calder
Streams without a gauge
River Colne — Essex
Streams without a gauge
Storm overflows upstream
River Colne — Colne (Upper) and Colne (Lower)
5 storm overflows are traced upstream of Staines Trading Estate, the Colne’s lowest gauge on the river map: on the Colne itself, on its gauged tributaries, and on smaller streams that join above there.
- 0 report discharging now
- 5 not discharging
- 0 offline or silent: 0 monitor offline, 0 status unknown, 0 no live feed
Official figures for 2025, for the overflows traced upstream of Staines Trading Estate: 152 spills over 2,309 hours in total, across all 5.
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 Colne includes the smaller streams that join it there.
Mimmshall Brook, above Mimmshall Brookjoins the Colne above London Colney1 overflow
- Darkes Lane, Potters Bar Not discharging
Thames Water · into Potters Bar Brook · 2.4 km by river above Mimmshall Brook · 2025: 9 spills, 25 h
Between Moor Lane and Denham Colne1 overflow
- Maple Lodge STW, Bucks Not discharging
Thames Water · into River Colne · 7.3 km by river above Denham Colne · 2025: 35 spills, 455 h
River Chess, above Rickmansworthjoins the Colne above Denham Colne1 overflow
River Misbourne, above Denham Lodgejoins the Colne above Willowbank2 overflows
- Amersham Balancing Tanks Not discharging
Thames Water · into Misbourne · 14.0 km by river above Denham Lodge · 2025: 13 spills, 167 h - Gerrards Cross Not discharging
Thames Water · into Misbourne · 3.4 km by river above Denham Lodge · 2025: 88 spills, 1,605 h
1 other overflow within 3 km of these gauges is placed below the Colne’s lowest gauge or on another river, so not listed.
River Colne — Aire and Calder
93 storm overflows are traced upstream of Colne Bridge, the Colne’s lowest gauge on the river map: on the Colne itself, on its gauged tributaries, and on smaller streams that join above there.
- 0 report discharging now
- 90 not discharging
- 3 offline or silent: 1 monitor offline, 1 status unknown, 1 no live feed
Official figures for 2025, for the overflows traced upstream of Colne Bridge: 2,520 spills over 12,801 hours in total, across all 93.
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 Colne includes the smaller streams that join it there. Every overflow traced is listed here, each stretch in full. Back to the short lists →
Between Marsden and Huddersfield Longroyd Bridge22 overflows
- Wood Bottom CSO Not discharging
Yorkshire Water · into River Colne · 10.9 km by river above Huddersfield Longroyd Bridge · 2025: 57 spills, 204 h - Spa Mills Bridge St CSO Not discharging
Yorkshire Water · into River Colne · 6.6 km by river above Huddersfield Longroyd Bridge · 2025: 45 spills, 188 h - Stones Lane/Waingate CSO Not discharging
Yorkshire Water · into Hoyle House Brook (Culverted) · 5.7 km by river above Huddersfield Longroyd Bridge · 2025: 9 spills, 42 h · placed on the river by its position alone - Causeway Side 13 C.s.o Not discharging
Yorkshire Water · into Hoyle House Brook · 5.5 km by river above Huddersfield Longroyd Bridge · 2025: 12 spills, 17 h · placed on the river by its position alone - Tbc When Permit Issued Not discharging
Yorkshire Water · into Tbc When Permit Issued · 5.3 km by river above Huddersfield Longroyd Bridge · 2025: 0 spills, 0 h · placed on the river by its position alone - Barber Row No 2 CSO Not discharging
Yorkshire Water · into River Colne · 5.1 km by river above Huddersfield Longroyd Bridge · 2025: 72 spills, 351 h - Bargate CSO Not discharging
Yorkshire Water · into River Colne · 4.9 km by river above Huddersfield Longroyd Bridge · 2025: 8 spills, 17 h - Gordon Terrace CSO Not discharging
Yorkshire Water · into River Colne · 4.6 km by river above Huddersfield Longroyd Bridge · 2025: 29 spills, 108 h - Titanic Mills CSO Not discharging
Yorkshire Water · into River Colne · 4.5 km by river above Huddersfield Longroyd Bridge · 2025: 50 spills, 212 h - Fernlea Grove CSO Not discharging
Yorkshire Water · into River Colne · 4.1 km by river above Huddersfield Longroyd Bridge · 2025: 16 spills, 29 h - Ramsden Mill CSO Not discharging
Yorkshire Water · into River Colne · 3.7 km by river above Huddersfield Longroyd Bridge · 2025: 4 spills, 8.8 h - Milnsbridge (Market Street) CSO Not discharging
Yorkshire Water · into Longwood Brook · 2.4 km by river above Huddersfield Longroyd Bridge · 2025: 55 spills, 125 h - Morley Lane CSO Not discharging
Yorkshire Water · into River Colne · 2.4 km by river above Huddersfield Longroyd Bridge · 2025: 32 spills, 41 h - Scar Lane CSO Not discharging
Yorkshire Water · into River Colne · 2.3 km by river above Huddersfield Longroyd Bridge · 2025: 11 spills, 16 h - Milns Shaw Lane No 2 CSO Not discharging
Yorkshire Water · into Tributary Of The River Colne · 2.1 km by river above Huddersfield Longroyd Bridge · 2025: 20 spills, 31 h - Factory Lane CSO Not discharging
Yorkshire Water · into Tributary Of The River Colne · 1.9 km by river above Huddersfield Longroyd Bridge · 2025: 23 spills, 61 h - Johnny Moores Hill CSO Not discharging
Yorkshire Water · into River Colne · 950 m by river above Huddersfield Longroyd Bridge · 2025: 23 spills, 20 h - Crosland St/Blackmoorfoot Rd CSO Not discharging
Yorkshire Water · into River Colne · 370 m by river above Huddersfield Longroyd Bridge · 2025: 0 spills, 0 h - Crosland St/Blackmoorfoot Rd CSO Not discharging
Yorkshire Water · into River Colne · 370 m by river above Huddersfield Longroyd Bridge · 2025: 15 spills, 5.0 h - Paddock Foot CSO Not discharging
Yorkshire Water · into Culverted Trib Of River Colne · 290 m by river above Huddersfield Longroyd Bridge · 2025: 48 spills, 100 h - Charlie Browns CSO Not discharging
Yorkshire Water · into River Colne · 120 m by river above Huddersfield Longroyd Bridge · 2025: 0 spills, 0 h - Longroyd Bridge CSO Not discharging
Yorkshire Water · into River Colne · 100 m by river above Huddersfield Longroyd Bridge · 2025: 0 spills, 0 h
Longwood Brook, above Huddersfield Royd Streetjoins the Colne above Huddersfield Longroyd Bridge2 overflows
- Leymoor Road CSO Not discharging
Yorkshire Water · into Longwood Brook · 580 m by river above Huddersfield Royd Street · 2025: 76 spills, 215 h - Dale Street CSO Not discharging
Yorkshire Water · into Longwood Brook · 420 m by river above Huddersfield Royd Street · 2025: 17 spills, 28 h
Between Huddersfield Longroyd Bridge and ICI Colne33 overflows
- Longroyd Manch Road CSO Not discharging
Yorkshire Water · into River Colne · 5.3 km by river above ICI Colne · 2025: 47 spills, 66 h - Longroyd Manch Road CSO Not discharging
Yorkshire Water · into River Colne · 5.3 km by river above ICI Colne · 2025: 1 spill, 0.3 h - St Thomas Road CSO Not discharging
Yorkshire Water · into River Colne · 5.3 km by river above ICI Colne · 2025: 2 spills, 0.5 h - Springdale Mills CSO Not discharging
Yorkshire Water · into River Colne · 5.0 km by river above ICI Colne · 2025: 0 spills, 0 h - Brook Motors CSO Not discharging
Yorkshire Water · into River Colne · 5.0 km by river above ICI Colne · 2025: 0 spills, 0 h - Whitehead Lane CSO No live feed
Yorkshire Water · into River Colne · 4.3 km by river above ICI Colne · 2025: 5 spills, 1.8 h - Newsome Road CSO Not discharging
Yorkshire Water · into River Colne · 4.1 km by river above ICI Colne · 2025: 40 spills, 91 h - Fenay Lane CSO Not discharging
Yorkshire Water · into Fenay Beck · 3.9 km by river above ICI Colne · 2025: 31 spills, 107 h - Colne Road CSO Not discharging
Yorkshire Water · into River Colne · 3.5 km by river above ICI Colne · 2025: 37 spills, 117 h - Longley Park CSO Not discharging
Yorkshire Water · into River Colne · 3.5 km by river above ICI Colne · 2025: 9 spills, 30 h - Almondbury CSO Not discharging
Yorkshire Water · into Fenay Beck · 3.4 km by river above ICI Colne · 2025: 0 spills, 0 h - Dog Kennel Bank CSO Not discharging
Yorkshire Water · into River Colne · 3.4 km by river above ICI Colne · 2025: 13 spills, 18 h - Kings Mill Lane No 2 CSO Not discharging
Yorkshire Water · into River Colne · 3.4 km by river above ICI Colne · 2025: 9 spills, 30 h - Carr Pit Road CSO Not discharging
Yorkshire Water · into River Colne · 3.1 km by river above ICI Colne · 2025: 10 spills, 32 h - Ivy Street CSO Not discharging
Yorkshire Water · into River Colne · 3.1 km by river above ICI Colne · 2025: 1 spill, 0.3 h - Daisy Street CSO Not discharging
Yorkshire Water · into River Colne · 3.0 km by river above ICI Colne · 2025: 31 spills, 89 h - Waterloo Road No2 CSO Not discharging
Yorkshire Water · into Round Wood Beck · 2.5 km by river above ICI Colne · 2025: 69 spills, 386 h - Castlegate Bradford CSO Not discharging
Yorkshire Water · into Culv Trib Of Hebble Beck · 2.5 km by river above ICI Colne · 2025: 1 spill, 0.5 h - Anchor Street CSO Not discharging
Yorkshire Water · into River Colne · 2.4 km by river above ICI Colne · 2025: 34 spills, 63 h - Gasworks Street CSO Not discharging
Yorkshire Water · into River Colne · 2.2 km by river above ICI Colne · 2025: 49 spills, 86 h - Willow Lane CSO Not discharging
Yorkshire Water · into River Colne(Via Birkby Relief) · 2.0 km by river above ICI Colne · 2025: 27 spills, 35 h · reaches the river through a sewer, so where it enters is approximate - Willow Lane Beck CSO Not discharging
Yorkshire Water · into River Colne(Via Birkby Relief) · 2.0 km by river above ICI Colne · 2025: 28 spills, 37 h · reaches the river through a sewer, so where it enters is approximate - Jack Hill CSO Not discharging
Yorkshire Water · into Colne · 2.0 km by river above ICI Colne · 2025: 11 spills, 12 h - Ben Shaws CSO Not discharging
Yorkshire Water · into River Colne · 2.0 km by river above ICI Colne · 2025: 18 spills, 32 h - Fartown Bradford Road CSO Not discharging
Yorkshire Water · into River Colne Via Birkby Relief · 2.0 km by river above ICI Colne · 2025: 17 spills, 11 h · reaches the river through a sewer, so where it enters is approximate - Thistle Street CSO Not discharging
Yorkshire Water · into River Colne · 2.0 km by river above ICI Colne · 2025: 117 spills, 1,122 h - Dalton Wakefield Road CSO Not discharging
Yorkshire Water · into Round Wood Beck · 1.9 km by river above ICI Colne · 2025: 28 spills, 49 h - Bradley Mills Road SPS Not discharging
Yorkshire Water · into River Colne · 1.6 km by river above ICI Colne · 2025: 3 spills, 37 h - Dalton Green Lane CSO Not discharging
Yorkshire Water · into Calder · 1.4 km by river above ICI Colne · 2025: 52 spills, 117 h - Dalton Long Lane No 2 CSO Not discharging
Yorkshire Water · into Lees Head Beck · 1.3 km by river above ICI Colne · 2025: 23 spills, 45 h - Dalton Ici North No 2 CSO Not discharging
Yorkshire Water · into Lees Head Beck · 1.2 km by river above ICI Colne · 2025: 65 spills, 326 h - Red Doles Road CSO Not discharging
Yorkshire Water · into River Colne · 1.2 km by river above ICI Colne · 2025: 44 spills, 109 h - Dalton Ici South CSO Not discharging
Yorkshire Water · into Lees Hd Beck Trib Colne/Calder · 1.1 km by river above ICI Colne · 2025: 22 spills, 136 h
Fenay Beck, above Fenay Bridgejoins the Colne above ICI Colne5 overflows
- Damhill No 2 CSO Not discharging
Yorkshire Water · into Shepley Dike · 6.0 km by river above Fenay Bridge · 2025: 9 spills, 34 h - Thunderbridge No 2 CSO Not discharging
Yorkshire Water · into Shepley Dike · 5.6 km by river above Fenay Bridge · 2025: 8 spills, 26 h - Springfield Lane CSO Not discharging
Yorkshire Water · into Tributary Of Dean Bottom Dike · 3.8 km by river above Fenay Bridge · 2025: 67 spills, 595 h - Dogley CSO Not discharging
Yorkshire Water · into Woodsome Beck · 2.6 km by river above Fenay Bridge · 2025: 0 spills, 0 h - Fenay Bridge Tank CSO Not discharging
Yorkshire Water · into Fenay Beck · 130 m by river above Fenay Bridge · 2025: 30 spills, 146 h
River Holme, above Queen's Milljoins the Colne above ICI Colne29 overflows
- Woodhead Road CSO Status unknown
Yorkshire Water · into Digley Brook · 13.7 km by river above Queen's Mill · 2025: 0 spills, 0 h - Swan Bank No 2 CSO Not discharging
Yorkshire Water · into River Ribble · 11.3 km by river above Queen's Mill · 2025: 3 spills, 14 h - Cooper Lane CSO Not discharging
Yorkshire Water · into River Holme · 10.9 km by river above Queen's Mill · 2025: 0 spills, 0 h - Towngate Holmfirth 2 CSO Not discharging
Yorkshire Water · into River Holme · 10.8 km by river above Queen's Mill · 2025: 22 spills, 86 h - Holmfirth Bridge Lane CSO Not discharging
Yorkshire Water · into River Holme · 10.5 km by river above Queen's Mill · 2025: 1 spill, 1.8 h - Mean Bridge CSO Not discharging
Yorkshire Water · into Meltham Dike · 10.5 km by river above Queen's Mill · 2025: 20 spills, 41 h - New Mill Library CSO Not discharging
Yorkshire Water · into New Mill Dike · 10.4 km by river above Queen's Mill · 2025: 17 spills, 52 h - Huddersfield Road Not discharging
Yorkshire Water · into New Mill Dike · 10.4 km by river above Queen's Mill · 2025: 0 spills, 0 h - Holme Bottom CSO Not discharging
Yorkshire Water · into New Mill Dike · 10.2 km by river above Queen's Mill · 2025: 36 spills, 111 h - Kirkbridge Lane CSO Monitor offline
Yorkshire Water · into New Mill Dike · 9.9 km by river above Queen's Mill · 2025: 0 spills, 0 h - Pickwick Mill CSO Not discharging
Yorkshire Water · into River Holme · 9.4 km by river above Queen's Mill · 2025: 1 spill, 7.5 h - Meltham CSO Not discharging
Yorkshire Water · into Meltham Dike · 9.3 km by river above Queen's Mill · 2025: 37 spills, 88 h - Sinking Wood No2 CSO Not discharging
Yorkshire Water · into New Mill Dike · 9.1 km by river above Queen's Mill · 2025: 73 spills, 1,047 h - Longlands Road CSO Not discharging
Yorkshire Water · into River Holme · 8.6 km by river above Queen's Mill · 2025: 57 spills, 1,088 h - Meltham STW Not discharging
Yorkshire Water · into Mag Brook · 8.6 km by river above Queen's Mill · 2025: 78 spills, 1,007 h - Brockholes Lane CSO Not discharging
Yorkshire Water · into Culv Trib Of River Holme · 7.3 km by river above Queen's Mill · 2025: 9 spills, 30 h - Neiley No. 2 STW Not discharging
Yorkshire Water · into River Holme · 6.5 km by river above Queen's Mill · 2025: 55 spills, 736 h - Thirstin Road No2 CSO Not discharging
Yorkshire Water · into Tributary Of Mag Brook · 5.8 km by river above Queen's Mill · 2025: 60 spills, 450 h - Honley Bridge No 2 CSO Not discharging
Yorkshire Water · into River Holme · 5.6 km by river above Queen's Mill · 2025: 11 spills, 4.3 h - Honley Newtown No 2 CSO Not discharging
Yorkshire Water · into River Holme · 5.5 km by river above Queen's Mill · 2025: 18 spills, 9.0 h - Corn Mill No 2 CSO Not discharging
Yorkshire Water · into River Holme · 5.5 km by river above Queen's Mill · 2025: 35 spills, 154 h - Honley Eastgate CSO Not discharging
Yorkshire Water · into Culv Trib Of River Holme · 5.5 km by river above Queen's Mill · 2025: 0 spills, 0 h - Honley Huddersfield Road No 2 Not discharging
Yorkshire Water · into River Holme · 5.0 km by river above Queen's Mill · 2025: 58 spills, 305 h - Queens Square CSO Not discharging
Yorkshire Water · into River Holme · 4.9 km by river above Queen's Mill · 2025: 62 spills, 365 h - Stockwell Hill CSO Not discharging
Yorkshire Water · into River Holme · 3.2 km by river above Queen's Mill · 2025: 38 spills, 119 h - Armitage Fold CSO Not discharging
Yorkshire Water · into River Holme · 2.7 km by river above Queen's Mill · 2025: 54 spills, 85 h - Lockwood Scar CSO Not discharging
Yorkshire Water · into River Holme · 850 m by river above Queen's Mill · 2025: 9 spills, 14 h - Water Street No 2 CSO Not discharging
Yorkshire Water · into River Holme · 840 m by river above Queen's Mill · 2025: 32 spills, 36 h - Queens Mill Road (Off) Not discharging
Yorkshire Water · into River Holme · 160 m by river above Queen's Mill · 2025: 0 spills, 0 h
Between ICI Colne and Colne Bridge2 overflows
- Huddersfield STW Not discharging
Yorkshire Water · into River Calder & River Colne · 1.2 km by river above Colne Bridge · 2025: 72 spills, 369 h - Huddersfield STW Not discharging
Yorkshire Water · into River Calder & River Colne · 560 m by river above Colne Bridge · 2025: 82 spills, 781 h
Near these gauges, connection not known
Within 3 km of one of the Colne’s gauges in a straight line, but the river map cannot say whether their water reaches it.
- Leeds Road SPS (Ici) No live feed
Yorkshire Water · into Sewer To River Colne · 280 m from ICI Colne in a straight line · reaches the river through a sewer or culvert · 2025: 0 spills, 0 h - Bradley Leeds Road CSO Not discharging
Yorkshire Water · into Cinderfield Dike · 510 m from Colne Bridge in a straight line · its water cannot be followed on the map · 2025: 45 spills, 140 h - Colliery Lane CSO Not discharging
Yorkshire Water · into Cinderfield Dike · 510 m from Colne Bridge in a straight line · its water cannot be followed on the map · 2025: 2 spills, 4.0 h - Oak Road CSO Not discharging
Yorkshire Water · into Trib Of Huddersfield Broad Can · 550 m from Colne Bridge in a straight line · no mapped watercourse close enough to be sure · 2025: 2 spills, 0.8 h - Alandale Road Bradley CSO Not discharging
Yorkshire Water · into Tributary Of The River Colne · 1.2 km from Colne Bridge in a straight line · its watercourse is not on the river map · 2025: 2 spills, 0.5 h - Bradley Road No's 1 & 2 CSO Not discharging
Yorkshire Water · into Trib Of Huddersfield Brd Canal · 1.5 km from Colne Bridge in a straight line · its watercourse is not on the river map · 2025: 15 spills, 14 h - Bradley Road No's 1 & 2 CSO Not discharging
Yorkshire Water · into Trib Of Huddersfield Brd Canal · 1.5 km from Colne Bridge in a straight line · its watercourse is not on the river map · 2025: 0 spills, 0 h - Deveron Grove No 2 CSO Not discharging
Yorkshire Water · into Clayton Dike · 1.7 km from Huddersfield Longroyd Bridge in a straight line · its watercourse is not on the river map · 2025: 7 spills, 3.3 h - Aspley Wakefield Road CSO Not discharging
Yorkshire Water · into Penny Dike · 1.7 km from Huddersfield Longroyd Bridge in a straight line · no mapped watercourse close enough to be sure · 2025: 13 spills, 12 h - Yws Unknown Sites Default No live feed
Yorkshire Water · into Varies With Outlet · 1.8 km from Huddersfield Longroyd Bridge in a straight line · its recorded watercourse is not the one mapped beside it · 2025: 4 spills, 14 h - Lake Side Lane SSO Not discharging
Yorkshire Water · into Oxfield Beck · 1.9 km from ICI Colne in a straight line · its recorded watercourse is not the one mapped beside it · 2025: 9 spills, 65 h - Crescent Road CSO Not discharging
Yorkshire Water · into Tributary Of Grimscar Dike · 2.1 km from Huddersfield Longroyd Bridge in a straight line · its recorded watercourse is not the one mapped beside it · 2025: 0 spills, 0 h - Pickford Street CSO Not discharging
Yorkshire Water · into Tributary Of The River Colne · 2.2 km from Huddersfield Longroyd Bridge in a straight line · no mapped watercourse close enough to be sure · 2025: 1 spill, 0.3 h
7 other overflows within 3 km of these gauges are placed below the Colne’s lowest gauge or on another river, so not listed.
River Colne — Essex
13 storm overflows are traced upstream of Lexden, the Colne’s lowest gauge on the river map: on the Colne itself, on its gauged tributaries, and on smaller streams that join above there.
- 0 report discharging now
- 13 not discharging
- 0 offline or silent: 0 monitor offline, 0 status unknown, 0 no live feed
Official figures for 2025, for the overflows traced upstream of Lexden: 127 spills over 582 hours in total, across the 12 that have a figure. 1 had no usable monitor data that year.
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 Colne includes the smaller streams that join it there.
Between Great Yeldham and Poole Street2 overflows
- Toppesfield STW Not discharging
Anglian Water · into Toppesfield Brook River Colne · 5.9 km by river above Poole Street · 2025: 40 spills, 145 h - Great Yeldham - Poole Street CSO Not discharging
Anglian Water · into River Colne · 1.7 km by river above Poole Street · 2025: 4 spills, 41 h
Between Poole Street and Earls Colne4 overflows
- Gosfield STW Not discharging
Anglian Water · into Bourne Brook River Colne Nt · 10.6 km by river above Earls Colne · 2025: 3 spills, 20 h · placed on the river by its position alone - Sible Hedingham STW Not discharging
Anglian Water · into River Colne · 9.5 km by river above Earls Colne · 2025: 12 spills, 38 h - Water Supply Boreholes At Parsonage Not discharging
Anglian Water · into River Colne · 4.7 km by river above Earls Colne · 2025: 7 spills, 10 h - Halstead (Langley) Wrc Not discharging
Anglian Water · into The River Colne Nt · 2.2 km by river above Earls Colne · 2025: 10 spills, 95 h
Between Earls Colne and Lexden7 overflows
- Earls Colne Church Hill #3 CSO Not discharging
Anglian Water · into Trib Of River Colne · 15.1 km by river above Lexden · 2025: 17 spills, 11 h - Earls Colne Water Recycling Centre Not discharging
Anglian Water · into River Colne Nt · 14.7 km by river above Lexden · 2025: 10 spills, 111 h - Earls Colne St Andrews Church CSO Not discharging
Anglian Water · into Tributary Of River Colne · 14.7 km by river above Lexden · 2025: 3 spills, 1.0 h - Earls Colne Not discharging
Anglian Water · into River Colne · 14.3 km by river above Lexden · 2025: 6 spills, 3.8 h - Ford Street T.p.s. Not discharging
Anglian Water · into The River Colne · 6.5 km by river above Lexden · 2025: 10 spills, 85 h - Eight Ash Green STW Not discharging
Anglian Water · into River Colne · 5.0 km by river above Lexden · 2025: 5 spills, 22 h - West Bergholt STW Not discharging
Anglian Water · into River Colne Nt · 560 m by river above Lexden · 2025: no data
Near these gauges, connection not known
Within 3 km of one of the Colne’s gauges in a straight line, but the river map cannot say whether their water reaches it.
- Colchester-Spring Lane CSO Not discharging
Anglian Water · into Tributary Of The River Colne · 1.3 km from Lexden in a straight line · no mapped watercourse close enough to be sure · 2025: 0 spills, 0 h - Eight Ash Green - Heathfields SPS Not discharging
Anglian Water · into Trib Of River Colne · 1.6 km from Lexden in a straight line · its watercourse is not on the river map · 2025: 0 spills, 0 h - Castle Hedingham - Queen St CSO Not discharging
Anglian Water · into River Colne · 1.6 km from Poole Street in a straight line · its water cannot be followed on the map · 2025: 2 spills, 3.8 h - Colchester St Albans Road CSO Not discharging shellfish water
Anglian Water · into Holland Brook (To R. Colne) · 2.8 km from Lexden in a straight line · no mapped watercourse close enough to be sure · 2025: 19 spills, 16 h - Sible Hedingham - Alderford St CSO Not discharging
Anglian Water · into River Colne · 2.9 km from Poole Street in a straight line · its water cannot be followed on the map · 2025: 1 spill, 0.3 h
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: © Thames Water storm overflow activity data, licensed under CC BY 4.0. Live status: © Yorkshire Water storm overflow activity data, licensed under CC BY 4.0. 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.
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