River Irwell at Radcliffe Bridge
EA name: RIVER IRWELL AT RADCLIFFE BRIDGE
Environment Agency sampling point NW-88022192 · Freshwater - rivers · listed as open (“open” does not mean it is sampled now)
These are samples taken on a date, not live readings of the river. Results reach the Environment Agency's archive days to months after the sample is taken, so the newest here may be weeks or months old. FloodRadar does not grade them.
Where and when
- Last sampled
- 8 Oct 2026, 13:2917 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 12 since 9 Oct 2023 Imported periods: 1 Oct 2023 – 25 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives) · results completed 17 Oct 2026
- Where
- National Grid 378612, 406946As published, to the nearest 1 m. Open in a map
- River, by its own name
- Irwell
- River, by the map
- River IrwellPlaced on the river its name gives, 4 m from the line.
- Next gauge downstream
- Kearsley On the River Irwell · 6.3 km along the river
- Nearest gauge upstream
- Pioneer Mills On the River Irwell · 0.6 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (8 samples)
Planned investigation (local monitoring) (4 samples)
Results here were completed a median of 12 days after the sample was taken (9 to 15 days, 3 samples).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
102.1%
Sampled 8 Oct 2026, 17 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Oct 2026, 13:29 | 102.1 | 102.1% |
| 4 Aug 2026, 12:07 | 98.7 | 98.7% |
| 1 Jul 2026, 09:55 | 93.8 | 93.8% |
| 10 Jun 2026, 09:03 | 95.6 | 95.6% |
| 6 May 2026, 11:43 | 104.5 | 104.5% |
| 13 Apr 2026, 14:01 | 118.1 | 118.1% |
| 12 Mar 2024, 10:14 | 96 | 96% |
| 1 Feb 2024, 11:26 | 101.3 | 101.3% |
| 4 Jan 2024, 09:49 | 98.6 | 98.6% |
| 6 Dec 2023, 10:28 | 98.1 | 98.1% |
| 6 Nov 2023, 11:38 | 98 | 98% |
| 9 Oct 2023, 11:52 | 94.7 | 94.7% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.9 mg/l
Sampled 8 Oct 2026, 17 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Oct 2026, 13:29 | 10.9 | 10.9 mg/l |
| 4 Aug 2026, 12:07 | 9.24 | 9.24 mg/l |
| 1 Jul 2026, 09:55 | 9.04 | 9.04 mg/l |
| 10 Jun 2026, 09:03 | 10.1 | 10.1 mg/l |
| 6 May 2026, 11:43 | 11.4 | 11.4 mg/l |
| 13 Apr 2026, 14:01 | 13.3 | 13.3 mg/l |
| 12 Mar 2024, 10:14 | 11.3 | 11.3 mg/l |
| 1 Feb 2024, 11:26 | 12.6 | 12.6 mg/l |
| 4 Jan 2024, 09:49 | 11.7 | 11.7 mg/l |
| 6 Dec 2023, 10:28 | 12.7 | 12.7 mg/l |
| 6 Nov 2023, 11:38 | 11.2 | 11.2 mg/l |
| 9 Oct 2023, 11:52 | 9.65 | 9.65 mg/l |
Water temperature
code 0076 · °C
12.4 °C
Sampled 8 Oct 2026, 17 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Oct 2026, 13:29 | 12.4 | 12.4 °C |
| 4 Aug 2026, 12:07 | 18.4 | 18.4 °C |
| 1 Jul 2026, 09:55 | 17 | 17 °C |
| 10 Jun 2026, 09:03 | 12.7 | 12.7 °C |
| 6 May 2026, 11:43 | 11.5 | 11.5 °C |
| 13 Apr 2026, 14:01 | 9.9 | 9.9 °C |
| 12 Mar 2024, 10:14 | 8 | 8 °C |
| 1 Feb 2024, 11:26 | 6 | 6 °C |
| 4 Jan 2024, 09:49 | 7.7 | 7.7 °C |
| 6 Dec 2023, 10:28 | 4.4 | 4.4 °C |
| 6 Nov 2023, 11:38 | 9.5 | 9.5 °C |
| 9 Oct 2023, 11:52 | 14.4 | 14.4 °C |
pH
code 0061
7.85
Sampled 8 Oct 2026, 17 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Oct 2026, 13:29 | 7.85 | 7.85 |
| 4 Aug 2026, 12:07 | 7.77 | 7.77 |
| 1 Jul 2026, 09:55 | 7.7 | 7.7 |
| 10 Jun 2026, 09:03 | 7.77 | 7.77 |
| 6 May 2026, 11:43 | 8 | 8 |
| 13 Apr 2026, 14:01 | 8.45 | 8.45 |
| 12 Mar 2024, 10:14 | 7.46 | 7.46 |
| 1 Feb 2024, 11:26 | 7.7 | 7.7 |
| 4 Jan 2024, 09:49 | 7.58 | 7.58 |
| 6 Dec 2023, 10:28 | 7.63 | 7.63 |
| 6 Nov 2023, 11:38 | 7.96 | 7.96 |
| 9 Oct 2023, 11:52 | 7.7 | 7.7 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.074 mg/l
Sampled 8 Oct 2026, 17 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Oct 2026, 13:29 | 0.074 | 0.074 mg/l |
| 4 Aug 2026, 12:07 | 0.066 | 0.066 mg/l |
| 1 Jul 2026, 09:55 | 0.099 | 0.099 mg/l |
| 10 Jun 2026, 09:03 | 0.13 | 0.13 mg/l |
| 6 May 2026, 11:43 | 0.059 | 0.059 mg/l |
| 13 Apr 2026, 14:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Mar 2024, 10:14 | 0.092 | 0.092 mg/l |
| 1 Feb 2024, 11:26 | 0.14 | 0.14 mg/l |
| 4 Jan 2024, 09:49 | 0.19 | 0.19 mg/l |
| 6 Dec 2023, 10:28 | 0.086 | 0.086 mg/l |
| 6 Nov 2023, 11:38 | 0.31 | 0.31 mg/l |
| 9 Oct 2023, 11:52 | 0.089 | 0.089 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
5.04 mg/l
Sampled 8 Oct 2026, 17 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Oct 2026, 13:29 | 5.04 | 5.04 mg/l |
| 4 Aug 2026, 12:07 | 5.44 | 5.44 mg/l |
| 1 Jul 2026, 09:55 | 3.46 | 3.46 mg/l |
| 10 Jun 2026, 09:03 | 4.15 | 4.15 mg/l |
| 6 May 2026, 11:43 | 4.58 | 4.58 mg/l |
| 13 Apr 2026, 14:01 | 3.18 | 3.18 mg/l |
| 12 Mar 2024, 10:14 | 5.09 | 5.09 mg/l |
| 1 Feb 2024, 11:26 | 1.78 | 1.78 mg/l |
| 4 Jan 2024, 09:49 | 1.28 | 1.28 mg/l |
| 6 Dec 2023, 10:28 | 2.28 | 2.28 mg/l |
| 6 Nov 2023, 11:38 | 1.07 | 1.07 mg/l |
| 9 Oct 2023, 11:52 | 2.77 | 2.77 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.076 mg/l
Sampled 8 Oct 2026, 17 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Oct 2026, 13:29 | 0.076 | 0.076 mg/l |
| 4 Aug 2026, 12:07 | 0.082 | 0.082 mg/l |
| 1 Jul 2026, 09:55 | 0.063 | 0.063 mg/l |
| 10 Jun 2026, 09:03 | 0.061 | 0.061 mg/l |
| 6 May 2026, 11:43 | 0.067 | 0.067 mg/l |
| 13 Apr 2026, 14:01 | 0.077 | 0.077 mg/l |
| 12 Mar 2024, 10:14 | 0.13 | 0.13 mg/l |
| 1 Feb 2024, 11:26 | 0.055 | 0.055 mg/l |
| 4 Jan 2024, 09:49 | 0.064 | 0.064 mg/l |
| 6 Dec 2023, 10:28 | 0.05 | 0.05 mg/l |
| 6 Nov 2023, 11:38 | 0.071 | 0.071 mg/l |
| 9 Oct 2023, 11:52 | 0.04 | 0.04 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
407 µS/cm
Sampled 8 Oct 2026, 17 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Oct 2026, 13:29 | 407 | 407 µS/cm |
| 4 Aug 2026, 12:07 | 426 | 426 µS/cm |
| 1 Jul 2026, 09:55 | 369 | 369 µS/cm |
| 10 Jun 2026, 09:03 | 159 | 159 µS/cm |
| 6 May 2026, 11:43 | 399 | 399 µS/cm |
| 13 Apr 2026, 14:01 | 314 | 314 µS/cm |
| 12 Mar 2024, 10:14 | 437 | 437 µS/cm |
| 1 Feb 2024, 11:26 | 224 | 224 µS/cm |
| 4 Jan 2024, 09:49 | 188 | 188 µS/cm |
| 6 Dec 2023, 10:28 | 285 | 285 µS/cm |
| 6 Nov 2023, 11:38 | 166 | 166 µS/cm |
| 9 Oct 2023, 11:52 | 279 | 279 µS/cm |
Everything measured here
16 determinands, each kept by its code, unit and sample material: results in different units or on different materials are never mixed. A “below” result is under the laboratory's detection limit, not zero.
Show all 16 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 12 | Oct 2023 – Oct 2026 | 102.1% 8 Oct 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 12 | Oct 2023 – Oct 2026 | 10.9 mg/l 8 Oct 2026 |
| Temperature of Water 0076 | River water | 12 | Oct 2023 – Oct 2026 | 12.4 °C 8 Oct 2026 |
| pH 0061 | River water | 12 | Oct 2023 – Oct 2026 | 7.85 8 Oct 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 12 | Oct 2023 – Oct 2026 | 0.074 mg/l 8 Oct 2026 |
| Nitrate as N 0117 | River water | 12 | Oct 2023 – Oct 2026 | 5.04 mg/l 8 Oct 2026 |
| Orthophosphate, reactive as P 0180 | River water | 12 | Oct 2023 – Oct 2026 | 0.076 mg/l 8 Oct 2026 |
| Conductivity at 25 C 0077 | River water | 12 | Oct 2023 – Oct 2026 | 407 µS/cm 8 Oct 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 12 | Oct 2023 – Oct 2026 | 79 mg/l 8 Oct 2026 |
| Ammonia un-ionised as N 0119 | River water | 12 | Oct 2023 – Oct 2026 | 0.00115 mg/l 8 Oct 2026 |
| BOD : 5 Day ATU 0085 | River water | 12 | Oct 2023 – Oct 2026 | below 3 mg/l 8 Oct 2026 |
| Chloride 0172 | River water | 12 | Oct 2023 – Oct 2026 | 33 mg/l 8 Oct 2026 |
| Nitrite as N 0118 | River water | 12 | Oct 2023 – Oct 2026 | 0.065 mg/l 8 Oct 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 12 | Oct 2023 – Oct 2026 | 5.1 mg/l 8 Oct 2026 |
| Pentachlorophenol 1085 | River water | 2 | Nov 2023 – Mar 2024 | below 0.02 µg/l 12 Mar 2024 |
| Solids, Suspended at 105 C 0135 | River water | 12 | Oct 2023 – Oct 2026 | below 3 mg/l 8 Oct 2026 |
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.