Walsden Water
Joins the Calder between Todmorden and Todmorden Millwood, no more than 1.8 km by river above Todmorden Millwood. Nearest the Calder: Todmorden Salford Normal; 1 more gauge further up.
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Live levels from 23 monitoring stations across Cumberland, Lancashire, West Yorkshire, updated every 15 minutes.
| Station | Level now | Status | ||
|---|---|---|---|---|
| Portsmouth Lennox Road | 0.43 m 28m ago | Normal | ||
| 4.8 km by river | ||||
| Todmorden | 0.38 m 28m ago | Normal | ||
| 1.4 km by river | ||||
| Todmorden Millwood | 0.12 m 28m ago | Normal | ||
| 3.3 km by river | ||||
| Todmorden Callis Bridge | -0.04 m 28m ago | Low | ||
| 1.7 km by river | ||||
| Hebden Bridge | 0.00 m 28m ago | Low | ||
| 3.2 km by river | ||||
| Mytholmroyd | 1.39 m 28m ago | Normal | ||
| 1.6 km by river | ||||
| Brearley | 0.13 m 28m ago | Normal | ||
| 4.7 km by river | ||||
| Sowerby Bridge | 0.06 m 28m ago | Normal | ||
| 3.3 km by river | ||||
| Copley Bridge | 0.32 m 28m ago | Low | ||
| 5.9 km by river | ||||
| Elland | 0.39 m 28m ago | Normal | ||
| 1.8 km by river | ||||
| Brighouse | -1.18 m 28m ago | Low | ||
| 6.2 km by river | ||||
| Heaton Lodge | 0.21 m 28m ago | Normal | ||
| 3.0 km by river | ||||
| Ledgard Bridge | 0.09 m 28m ago | Normal | ||
| 6.4 km by river | ||||
| Dewsbury | 0.51 m 28m ago | Normal | ||
| 7.4 km by river | ||||
| Horbury | 0.39 m 28m ago | Normal | ||
| 8.5 km by river | ||||
| Wakefield | 0.01 m 28m ago | Low | ||
| 8.3 km by river | ||||
| Birkwood | 0.70 m 28m ago | Normal | ||
| 9.5 km by river | ||||
| Methley | 1.22 m 28m ago | Normal | ||
| Station | Level now | Status | ||
|---|---|---|---|---|
| Oxford Road | 0.23 m 28m ago | Normal | ||
| 1.4 km by river | ||||
| Active Way | 0.58 m 28m ago | Normal | ||
| 7.6 km by river | ||||
| Padiham Town Centre | 0.27 m 28m ago | Low | ||
| 11.8 km by river | ||||
| Whalley Weirstructure | 0.38 m 28m ago | Normal | ||
| Station | Level now | Status |
|---|---|---|
| Calder Hallplace estimated | 0.28 m 28m 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.
Streams and rivers with a gauge whose water joins the Calder above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.
Each tributary’s water passes the gauge it joins above and every gauge below it on the Calder, and none of the gauges above where it joins. For each, the gauge nearest the Calder is shown; its own page lists the rest.
Joins the Calder between Todmorden and Todmorden Millwood, no more than 1.8 km by river above Todmorden Millwood. Nearest the Calder: Todmorden Salford Normal; 1 more gauge further up.
Joins the Calder between Hebden Bridge and Mytholmroyd, no more than 3.0 km by river above Mytholmroyd. Nearest the Calder: Nutclough Low.
Joins the Calder between Mytholmroyd and Brearley, no more than 2.7 km by river above Brearley. Nearest the Calder: Mytholmroyd Dauber Bridge Normal.
Joins the Calder between Sowerby Bridge and Copley Bridge, no more than 3.6 km by river above Copley Bridge. Nearest the Calder: Sowerby Bridge Scar Head Road Normal; 1 more gauge further up.
Joins the Calder between Copley Bridge and Elland, no more than 8.9 km by river above Elland. Nearest the Calder: Stainland Board Mills Low.
Joins the Calder between Copley Bridge and Elland, no more than 11.4 km by river above Elland. Nearest the Calder: Halifax Normal.
Joins the Calder between Brighouse and Heaton Lodge, no more than 7.5 km by river above Heaton Lodge. Nearest the Calder: Bailiff Bridge Low.
Joins the Calder between Brighouse and Heaton Lodge, no more than 930 m by river above Heaton Lodge. Nearest the Calder: Colne Bridge Normal; 11 more gauges further up. Gauged streams joining it: Crimble Clough, Longwood Brook, Fenay Beck, Grimescar Dike and River Holme.
Joins the Calder between Ledgard Bridge and Dewsbury, no more than 3.4 km by river above Dewsbury. Nearest the Calder: Northorpe Normal; 3 more gauges further up. Gauged streams joining it: Blacup Beck and Tanhouse Beck.
Joins the Calder between Dewsbury and Horbury, no more than 8.7 km by river above Horbury. Nearest the Calder: Batley Savile Street Normal; 2 more gauges further up. Gauged streams joining it: Carlinghow Brook.
Joins the Calder between Wakefield and Birkwood, no more than 9.1 km by river above Birkwood. Nearest the Calder: Wakefield Colinsway Normal; 6 more gauges further up. Gauged streams joining it: Alverthorpe Beck and Balne Beck.
Joins the Calder between Wakefield and Birkwood, no more than 8.0 km by river above Birkwood. Nearest the Calder: Wakefield Oakenshaw Normal.
Below Methley, its water next reaches Castleford, a gauge on River Aire, 1.9 km by river downstream.
Joins the Calder between Active Way and Padiham Town Centre, no more than 1.1 km by river above Padiham Town Centre.
| Dryden Street | 0.17 m 28m ago | Normal |
Its water passes Padiham Town Centre and every gauge below it on the Calder. It does not pass Active Way or the gauges above it.
Joins the Calder between Active Way and Padiham Town Centre, no more than 6.3 km by river above Padiham Town Centre.
| Reedyford | 0.41 m 28m ago | Normal |
| 1.6 km by river | ||
| Lomeshaye | 0.20 m 28m ago | Normal |
| 3.7 km by river | ||
| Barden Lane | 0.23 m 28m ago | Normal |
Its water passes Padiham Town Centre and every gauge below it on the Calder. It does not pass Active Way or the gauges above it.
Joins the Calder between Active Way and Padiham Town Centre, no more than 9.3 km by river above Padiham Town Centre.
| Thompson Park | 0.28 m 28m ago | Low |
Its water passes Padiham Town Centre and every gauge below it on the Calder. It does not pass Active Way or the gauges above it.
Joins the Calder between Padiham Town Centre and Whalley Weir, no more than 14.9 km by river above Whalley Weir.
| Milnshaw | 0.25 m 28m ago | Normal |
Its water passes Whalley Weir and every gauge below it on the Calder. It does not pass Padiham Town Centre or the gauges above it.
Joins the Calder between Padiham Town Centre and Whalley Weir, no more than 9.8 km by river above Whalley Weir.
| Sabden Bridge | 0.22 m 28m ago | Low |
Its water passes Whalley Weir and every gauge below it on the Calder. It does not pass Padiham Town Centre or the gauges above it.
Below Whalley Weir, its water next reaches New Jumbles Rock, a gauge on River Ribble, 5.0 km by river downstream.
No gauged tributary joins the Calder above Calder Hall on the river map. Streams without a gauge are not counted here.
No gauge below Calder Hall 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.
287 storm overflows are traced upstream of Methley, the Calder’s lowest gauge on the river map: on the Calder itself, on its gauged tributaries, and on smaller streams that join above there.
Official figures for 2025, for the overflows traced upstream of Methley: 8,105 spills over 43,788 hours in total, across all 287.
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 Calder includes the smaller streams that join it there. Where a stretch or a tributary has more than 3, the 2 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 →
and 2 more: show all 4 overflows on this stretch → All above Todmorden, nearest first →
and 7 more: show all 9 overflows on this stretch → All above Mytholmroyd, nearest first →
and 7 more: show all 9 overflows on this stretch → All above Sowerby Bridge, nearest first →
and 6 more: show all 8 overflows on this stretch → All above Copley Bridge, nearest first →
and 4 more: show all 6 overflows on this stretch → All above Sowerby Bridge Scar Head Road, nearest first →
and 39 more: show all 41 overflows on this stretch → All above Elland, nearest first →
and 2 more: show all 4 overflows on this stretch → All above Halifax, nearest first →
and 15 more: show all 17 overflows on this stretch → All above Heaton Lodge, nearest first →
and 2 more: show all 4 overflows on this stretch → All above Bailiff Bridge, nearest first →
and 91 more: show all 93 overflows on the Colne and the streams that join it → All above Colne Bridge, nearest first →
and 7 more: show all 9 overflows on this stretch → All above Dewsbury, nearest first →
and 11 more: show all 13 overflows on Spen Beck and the streams that join it → All above Northorpe, nearest first →
and 10 more: show all 12 overflows on this stretch → All above Horbury, nearest first →
and 3 more: show all 5 overflows on Batley Beck and the streams that join it → All above Batley Savile Street, nearest first →
and 9 more: show all 11 overflows on this stretch → All above Wakefield, nearest first →
and 6 more: show all 8 overflows on this stretch → All above Birkwood, nearest first →
and 7 more: show all 9 overflows on Ings Beck and the streams that join it → All above Wakefield Colinsway, nearest first →
and 2 more: show all 4 overflows on this stretch → All above Wakefield Oakenshaw, nearest first →
and 8 more: show all 10 overflows on this stretch → All above Methley, nearest first →
Within 3 km of one of the Calder’s gauges in a straight line, but the river map cannot say whether their water reaches it.
40 more near these gauges whose connection is not known.
7 other overflows within 3 km of these gauges are placed below the Calder’s lowest gauge or on another river, so not listed.
51 storm overflows are traced upstream of Whalley Weir, the Calder’s lowest gauge on the river map: on the Calder itself, on its gauged tributaries, and on smaller streams that join above there.
Official figures for 2025, for the overflows traced upstream of Whalley Weir: 1,235 spills over 4,271 hours in total, across all 51.
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 Calder includes the smaller streams that join it there. Where a stretch or a tributary has more than 3, the 2 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 →
and 3 more: show all 5 overflows on this stretch → All above Padiham Town Centre, nearest first →
and 16 more: show all 18 overflows on Pendle Water and the streams that join it → All above Barden Lane, nearest first →
and 15 more: show all 17 overflows on this stretch → All above Whalley Weir, nearest first →
and 4 more: show all 6 overflows on this stretch → All above Milnshaw, nearest first →
Within 3 km of one of the Calder’s gauges in a straight line, but the river map cannot say whether their water reaches it.
6 other overflows within 3 km of these gauges are placed below the Calder’s lowest gauge or on another river, so not listed.
1 storm overflow is traced upstream of Calder Hall, the Calder’s lowest gauge on the river map: on the Calder itself, on its gauged tributaries, and on smaller streams that join above there.
Official figures for 2025, for the overflow traced upstream of Calder Hall: 52 spills over 836 hours.
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 Calder includes the smaller streams that join it there.
Within 3 km of one of the Calder’s gauges in a straight line, but the river map cannot say whether their water reaches it.
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: © Yorkshire Water storm overflow activity data, licensed under CC BY 4.0. Live status: © United Utilities 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.
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.
Sampled most recently, anywhere on these rivers and their streams:
122 sampling points on the River Calder and the streams that join it above Methley, and below it. 30 have a sample from the last 12 months; 41 have any sample banked.
| Where, from the source down | Sampling points | Newest sample |
|---|---|---|
| Walsden Water and its streamsjoins the Calder above Todmorden Millwood | 5 points1 sampled | 1 Sep 2026 |
| Above Todmorden | 2 points0 sampled | none banked |
| Above Todmorden Millwood | 1 point0 sampled | none banked |
| Above Todmorden Callis Bridge | 2 points | 1 Sep 2026 |
| Above NutcloughHebden Water · joins the Calder above Mytholmroyd | 4 points3 sampled | 18 Jun 2026 |
| Above Mytholmroyd Dauber BridgeCragg Brook · joins the Calder above Brearley | 1 point | 15 Jun 2026 |
| Above Mytholmroyd | 4 points2 sampled | 9 Oct 2024 |
| River Ryburn and its streamsjoins the Calder above Copley Bridge | 5 points1 sampled | 25 Jun 2026 |
| Above Brearley | 1 point0 sampled | none banked |
| River Colne and its streamsjoins the Calder above Heaton Lodge | 39 points8 sampled | 17 Sep 2026 |
| Above HalifaxHebble Brook · joins the Calder above Elland | 2 points0 sampled | none banked |
| Above Sowerby Bridge | 2 points0 sampled | none banked |
| Above Stainland Board MillsBlack Brook · joins the Calder above Elland | 2 points1 sampled | 15 Jun 2026 |
| Above Copley Bridge | 3 points2 sampled | 20 Mar 2026 |
| Above Elland | 11 points7 sampled | 15 Jun 2026 |
| Above Bailiff BridgeClifton Beck · joins the Calder above Heaton Lodge | 1 point | 27 Jul 2026 |
| Above Heaton Lodge | 4 points0 sampled | none banked |
| Spen Beck and its streamsjoins the Calder above Dewsbury | 9 points3 sampled | 1 Oct 2026 |
| Above Ledgard Bridge | 1 point | 4 Aug 2026 |
| Batley Beck and its streamsjoins the Calder above Horbury | 2 points0 sampled | none banked |
| Above Dewsbury | 4 points3 sampled | 24 Jul 2026 |
| Above Horbury | 4 points1 sampled | 4 Aug 2026 |
| Ings Beck and its streamsjoins the Calder above Birkwood | 2 points0 sampled | none banked |
| Above Wakefield | 3 points1 sampled | 5 Jun 2026 |
| Above Wakefield OakenshawOakenshaw Beck · joins the Calder above Birkwood | 1 point | 15 Jun 2026 |
| Above Birkwood | 2 points1 sampled | 14 Aug 2026 |
| Above Methley | 4 points0 sampled | none banked |
| Below the lowest gauge | 1 point | 7 Sep 2026 |
72 sampling points on the River Calder and the streams that join it above Whalley Weir, and below it. 5 have a sample from the last 12 months; 21 have any sample banked.
| Where, from the source down | Sampling points | Newest sample |
|---|---|---|
| Above Thompson ParkRiver Brun · joins the Calder above Padiham Town Centre | 6 points1 sampled | 12 Mar 2025 |
| Above Oxford Road | 6 points0 sampled | none banked |
| Pendle Water and its streamsjoins the Calder above Padiham Town Centre | 18 points7 sampled | 5 Aug 2026 |
| Above MilnshawRiver Hyndburn · joins the Calder above Whalley Weir | 2 points0 sampled | none banked |
| Above Dryden StreetGreen Brook · joins the Calder above Padiham Town Centre | 5 points0 sampled | none banked |
| Above Padiham Town Centre | 12 points5 sampled | 2 Dec 2025 |
| Above Whalley Weir | 22 points8 sampled | 29 May 2026 |
| Below the lowest gauge | 1 point0 sampled | none banked |
5 sampling points on the River Calder and the streams that join it above Calder Hall. 4 have a sample from the last 12 months; 4 have any sample banked.
| Where, from the source down | Sampling points | Newest sample |
|---|---|---|
| Above Calder Hall | 5 points4 sampled | 29 Sep 2026 |
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.
Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.
Contains OS data © Crown copyright and database rights 2026.
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