FloodRadar
Log inCreate free account
FloodRadar
Log inCreate free account
Live levels from 2 monitoring stations across Norfolk, updated every 15 minutes.
| Station | Level now | Status |
|---|---|---|
| Marham | 0.08 m 1h ago | Low |
| Station | Level now | Status | ||
|---|---|---|---|---|
| Continues from the section above: 9.7 km by river below Marham | ||||
| Setchey Bridge | 0.36 mASD 29m 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 Nar 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 Nar above Setchey Bridge on the river map. Streams without a gauge are not counted here.
Below Setchey Bridge, its water next reaches King's Lynn, a gauge on River Great Ouse, 8.2 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.
None of the storm overflows FloodRadar holds is traced upstream of Setchey 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.
Within 3 km of one of the Nar’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: © 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.
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.
12 sampling points on the River Nar and the streams that join it above Setchey Bridge, and below it. 7 have a sample from the last 12 months; 11 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) |
|---|---|---|---|---|
| River Nar B1145 Road Bridge Mileham | River Nar | 25 km | 3 Apr 2025 · 18 months ago | Oxygen 88.2%Temp 8.6 °CpH 7.78Ammonia 0.032 mg/l |
| River Nar Litcham Road Bridge | River Nar | 23 km | 7 Sep 2026 · 31 days ago | Oxygen 47.6%Temp 16.8 °CpH 7.84Ammonia below 0.03 mg/l |
| River Nar West Lexham Road Bridge | River Nar | 17 km | 3 Aug 2026 · 2 months ago | Oxygen 84.1%Temp 20.5 °CpH 7.74Ammonia 0.035 mg/l |
| River Nar Castle Acre Road Bridge | River Nar | 13 km | 3 Aug 2026 · 2 months ago | Oxygen 74.7%Temp 14.5 °CpH 7.33Ammonia below 0.03 mg/l |
| River Nar Fulmer Lane Castle Acre Common | River Nar | 10 km | 5 Mar 2024 · 2.6 years ago | Oxygen 94.6%Temp 8.1 °CpH 7.58Ammonia below 0.03 mg/l |
| West Acre Road Bridge | River Nar | 6.7 km | 5 Dec 2024 · 22 months ago | Oxygen 90.3%Temp 8.6 °CpH 7.99Ammonia 0.048 mg/l |
| River Nar West Acre Road Bridge | River Nar | 6.6 km | 1 Oct 2026 · 7 days ago | Oxygen 97.9%Temp 13.7 °CpH 8.17Ammonia below 0.03 mg/l |
| River Nar Narborough Road Bridge | River Nar | 2.8 km | Last sampled 26 Jan 2000, before the imported period |
| Sampling point | Watercourse (map) | Above the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| River Nar Marham Gauging Station | River Nar | 9.8 km | 16 Mar 2026 · 7 months ago | Oxygen 99.3%Temp 7.8 °CpH 8.22Ammonia below 0.03 mg/l |
| River Nar Highbridge Wormegay Blackboro End | River Nar | 3.6 km | 2 Sep 2026 · 36 days ago | Oxygen 66.1%Temp 15.9 °CpH 8.07Ammonia below 0.03 mg/l |
| Sampling point | Watercourse (map) | Below the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| River Nar By-Pass Bridge Kings Lynn | River Nar | 6.2 km | 24 Feb 2026 · 7 months ago | Oxygen 88.6%Temp 10.2 °CpH 7.98Ammonia 0.076 mg/l |
| River Nar Sluice at Great Ouse confluence | River Nar | 7.7 km | 5 Feb 2025 · 20 months ago |
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.
FloodRadar helper · beta