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Live levels from 3 monitoring stations across Hampshire, Norfolk, updated every 15 minutes.
| Station | Level now | Status | ||
|---|---|---|---|---|
| Denmead | 33.20 mAOD 27m ago | Normal | ||
| 12.2 km by river | ||||
| North Fareham weirstructure | 0.13 mASD 27m ago | Normal | ||
| Station | Level now | Status |
|---|---|---|
| Kilham's Bridgeplace estimated | -3.39 mAOD 43d ago | old reading |
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 Wallington 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.
No gauged tributary joins the Wallington above North Fareham weir on the river map. Streams without a gauge are not counted here.
No gauge below North Fareham weir is known on the river map.
Joins the Wallington above Kilham's Bridge, its highest gauge, no more than 12.6 km by river above Kilham's Bridge.
| Castle Rising | 0.12 m 27m ago | Low |
Its water passes every gauge on the Wallington, from Kilham's Bridge down.
No gauge below Kilham's Bridge 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.
2 storm overflows are traced upstream of North Fareham weir, the Wallington’s lowest gauge on the river map: on the Wallington itself, on its gauged tributaries, and on smaller streams that join above there.
Official figures for 2025, for the overflows traced upstream of North Fareham weir: 12 spills over 111 hours in total, across all 2.
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 Wallington includes the smaller streams that join it there.
Within 3 km of one of the Wallington’s gauges in a straight line, but the river map cannot say whether their water reaches it.
3 other overflows within 3 km of these gauges are placed below the Wallington’s lowest gauge or on another river, so not listed.
None of the storm overflows FloodRadar holds is traced upstream of Kilham's Bridge on the river map. That is not the same as none: the map leaves out many small streams and culverts, so an overflow it cannot place may still drain here, and not every company publishes every overflow.
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: © Southern 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.
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.
4 sampling points on the River Wallington and the streams that join it above North Fareham weir, and below it. 3 have a sample from the last 12 months; 3 have any sample banked. Listed from the source down, grouped by the next gauge each one's water reaches.
| Sampling point | Watercourse (map) | Above the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| Downstream of Balancing Pond (closed) | Wallington River | 12 km | Last sampled 30 Jul 2007, before the imported period | |
| Cheesemans Bridge Stream at Potwell | unnamed stream | 9.9 km | 16 Sep 2026 · 22 days ago | Oxygen 87.2%Temp 13.6 °CpH 7.98Ammonia below 0.03 mg/l |
| Wallington Newmans Bridge | Wallington River | 5.8 km | 28 Sep 2026 · 10 days ago | Oxygen 64.3%Temp 13.9 °CpH 7.19Ammonia below 0.03 mg/l |
| Sampling point | Watercourse (map) | Below the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| River Wallington Riversdale | Wallington River | 0.8 km | 26 Aug 2026 · 43 days ago | Oxygen 76.1%Temp 14.7 °CpH 7.54Ammonia below 0.03 mg/l |
2 sampling points on the River Wallington and the streams that join it above Kilham's Bridge. 2 have a sample from the last 12 months; 2 have any sample banked. Listed from the source down, grouped by the next gauge each one's water reaches.
| Sampling point | Watercourse (map) | Above the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| Babingley River B1440 Road Bridge Hillington | Babingley River | 3.5 km | 3 Sep 2026 · 35 days ago | Oxygen 97.1%Temp 14 °CpH 8.35Ammonia below 0.03 mg/l |
| Sampling point | Watercourse (map) | Above the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| Babingley River A149 Road Bridge Castle Rising | Babingley River | 12 km | 10 Apr 2026 · 6 months ago | Oxygen 93% Jan 2026Temp 10.7 °CpH 8.28Ammonia below 0.03 mg/l |
Distances are along the river to the gauge named. England's samples only.
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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