River Roch above the confluence with Stanney Bk
EA name: RIVER ROCH PTC STANNEY BK
Environment Agency sampling point NW-88002167 · 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
- 24 Mar 2026, 11:107 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone). Not sampled since, as far as the archive shows: the Environment Agency was asked up to 24 Oct 2026 and had nothing newer.
- Samples banked
- 12 since 7 Apr 2025 Imported periods: 1 Oct 2023 – 24 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives)
- Where
- National Grid 390857, 414040As published, to the nearest 1 m. Open in a map
- River, by its own name
- Roch
- River, by the map
- River RochPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- Rochdale On the River Roch · 4.3 km along the river
- Nearest gauge upstream
- Albert Royds Bridge On the River Roch · 0.5 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (12 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
100.4%
Sampled 24 Mar 2026, 7 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 11:10 | 100.4 | 100.4% |
| 24 Feb 2026, 13:05 | 100.2 | 100.2% |
| 29 Jan 2026, 11:48 | 99.5 | 99.5% |
| 9 Dec 2025, 14:11 | 100.1 | 100.1% |
| 17 Nov 2025, 11:44 | 103.1 | 103.1% |
| 30 Oct 2025, 09:35 | 100.2 | 100.2% |
| 25 Sep 2025, 11:15 | 100.4 | 100.4% |
| 14 Aug 2025, 10:21 | 98.3 | 98.3% |
| 10 Jul 2025, 09:20 | 95.1 | 95.1% |
| 27 Jun 2025, 12:03 | 103.5 | 103.5% |
| 13 May 2025, 11:44 | 103.1 | 103.1% |
| 7 Apr 2025, 14:54 | 117.8 | 117.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.5 mg/l
Sampled 24 Mar 2026, 7 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 11:10 | 11.5 | 11.5 mg/l |
| 24 Feb 2026, 13:05 | 11.7 | 11.7 mg/l |
| 29 Jan 2026, 11:48 | 12.5 | 12.5 mg/l |
| 9 Dec 2025, 14:11 | 11.4 | 11.4 mg/l |
| 17 Nov 2025, 11:44 | 12.5 | 12.5 mg/l |
| 30 Oct 2025, 09:35 | 11.6 | 11.6 mg/l |
| 25 Sep 2025, 11:15 | 11.1 | 11.1 mg/l |
| 14 Aug 2025, 10:21 | 9.38 | 9.38 mg/l |
| 10 Jul 2025, 09:20 | 9.56 | 9.56 mg/l |
| 27 Jun 2025, 12:03 | 10.4 | 10.4 mg/l |
| 13 May 2025, 11:44 | 10.5 | 10.5 mg/l |
| 7 Apr 2025, 14:54 | 12.8 | 12.8 mg/l |
Water temperature
code 0076 · °C
9.2 °C
Sampled 24 Mar 2026, 7 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 11:10 | 9.2 | 9.2 °C |
| 24 Feb 2026, 13:05 | 8.6 | 8.6 °C |
| 29 Jan 2026, 11:48 | 5.5 | 5.5 °C |
| 9 Dec 2025, 14:11 | 9.7 | 9.7 °C |
| 17 Nov 2025, 11:44 | 7.1 | 7.1 °C |
| 30 Oct 2025, 09:35 | 8.9 | 8.9 °C |
| 25 Sep 2025, 11:15 | 10.8 | 10.8 °C |
| 14 Aug 2025, 10:21 | 17.5 | 17.5 °C |
| 10 Jul 2025, 09:20 | 15 | 15 °C |
| 27 Jun 2025, 12:03 | 15.2 | 15.2 °C |
| 13 May 2025, 11:44 | 14.2 | 14.2 °C |
| 7 Apr 2025, 14:54 | 11.6 | 11.6 °C |
pH
code 0061
7.62
Sampled 24 Mar 2026, 7 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 11:10 | 7.62 | 7.62 |
| 24 Feb 2026, 13:05 | 7.55 | 7.55 |
| 29 Jan 2026, 11:48 | 7.58 | 7.58 |
| 9 Dec 2025, 14:11 | 7.41 | 7.41 |
| 17 Nov 2025, 11:44 | 7.62 | 7.62 |
| 30 Oct 2025, 09:35 | 7.82 | 7.82 |
| 25 Sep 2025, 11:15 | 7.61 | 7.61 |
| 14 Aug 2025, 10:21 | 7.7 | 7.7 |
| 10 Jul 2025, 09:20 | 7.69 | 7.69 |
| 27 Jun 2025, 12:03 | 7.88 | 7.88 |
| 13 May 2025, 11:44 | 7.9 | 7.9 |
| 7 Apr 2025, 14:54 | 8.64 | 8.64 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.054 mg/l
Sampled 24 Mar 2026, 7 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 11:10 | 0.054 | 0.054 mg/l |
| 24 Feb 2026, 13:05 | 0.04 | 0.04 mg/l |
| 29 Jan 2026, 11:48 | 0.049 | 0.049 mg/l |
| 9 Dec 2025, 14:11 | 0.073 | 0.073 mg/l |
| 17 Nov 2025, 11:44 | 0.034 | 0.034 mg/l |
| 30 Oct 2025, 09:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Sep 2025, 11:15 | 0.036 | 0.036 mg/l |
| 14 Aug 2025, 10:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Jul 2025, 09:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Jun 2025, 12:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 May 2025, 11:44 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Apr 2025, 14:54 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.817 mg/l
Sampled 24 Mar 2026, 7 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 11:10 | 0.817 | 0.817 mg/l |
| 24 Feb 2026, 13:05 | 0.995 | 0.995 mg/l |
| 29 Jan 2026, 11:48 | 0.934 | 0.934 mg/l |
| 9 Dec 2025, 14:11 | 0.916 | 0.916 mg/l |
| 17 Nov 2025, 11:44 | 1.2 | 1.2 mg/l |
| 30 Oct 2025, 09:35 | 0.973 | 0.973 mg/l |
| 25 Sep 2025, 11:15 | 0.975 | 0.975 mg/l |
| 14 Aug 2025, 10:21 | 0.456 | 0.456 mg/l |
| 10 Jul 2025, 09:20 | 0.455 | 0.455 mg/l |
| 27 Jun 2025, 12:03 | 0.505 | 0.505 mg/l |
| 13 May 2025, 11:44 | 0.549 | 0.549 mg/l |
| 7 Apr 2025, 14:54 | 0.296 | 0.296 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.02 mg/l
Sampled 24 Mar 2026, 7 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 11:10 | 0.02 | 0.02 mg/l |
| 24 Feb 2026, 13:05 | 0.022 | 0.022 mg/l |
| 29 Jan 2026, 11:48 | 0.019 | 0.019 mg/l |
| 9 Dec 2025, 14:11 | 0.044 | 0.044 mg/l |
| 17 Nov 2025, 11:44 | 0.032 | 0.032 mg/l |
| 30 Oct 2025, 09:35 | 0.023 | 0.023 mg/l |
| 25 Sep 2025, 11:15 | 0.029 | 0.029 mg/l |
| 14 Aug 2025, 10:21 | 0.016 | 0.016 mg/l |
| 10 Jul 2025, 09:20 | 0.02 | 0.02 mg/l |
| 27 Jun 2025, 12:03 | 0.018 | 0.018 mg/l |
| 13 May 2025, 11:44 | 0.021 | 0.021 mg/l |
| 7 Apr 2025, 14:54 | <0.01 | below 0.01 mg/l (not detected above this) |
Conductivity
at 25 °C · code 0077 · µS/cm
307 µS/cm
Sampled 24 Mar 2026, 7 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 11:10 | 307 | 307 µS/cm |
| 24 Feb 2026, 13:05 | 226 | 226 µS/cm |
| 29 Jan 2026, 11:48 | 258 | 258 µS/cm |
| 9 Dec 2025, 14:11 | 166 | 166 µS/cm |
| 17 Nov 2025, 11:44 | 223 | 223 µS/cm |
| 30 Oct 2025, 09:35 | 256 | 256 µS/cm |
| 25 Sep 2025, 11:15 | 130 | 130 µS/cm |
| 14 Aug 2025, 10:21 | 314 | 314 µS/cm |
| 10 Jul 2025, 09:20 | 311 | 311 µS/cm |
| 27 Jun 2025, 12:03 | 305 | 305 µS/cm |
| 13 May 2025, 11:44 | 312 | 312 µS/cm |
| 7 Apr 2025, 14:54 | 313 | 313 µS/cm |
Everything measured here
15 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 15 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 12 | Apr 2025 – Mar 2026 | 100.4% 24 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 12 | Apr 2025 – Mar 2026 | 11.5 mg/l 24 Mar 2026 |
| Temperature of Water 0076 | River water | 12 | Apr 2025 – Mar 2026 | 9.2 °C 24 Mar 2026 |
| pH 0061 | River water | 12 | Apr 2025 – Mar 2026 | 7.62 24 Mar 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 12 | Apr 2025 – Mar 2026 | 0.054 mg/l 24 Mar 2026 |
| Nitrate as N 0117 | River water | 12 | Apr 2025 – Mar 2026 | 0.817 mg/l 24 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 12 | Apr 2025 – Mar 2026 | 0.02 mg/l 24 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 12 | Apr 2025 – Mar 2026 | 307 µS/cm 24 Mar 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 12 | Apr 2025 – Mar 2026 | 72 mg/l 24 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 12 | Apr 2025 – Mar 2026 | 0.00039 mg/l 24 Mar 2026 |
| BOD : 5 Day ATU 0085 | River water | 12 | Apr 2025 – Mar 2026 | 1.9 mg/l 24 Mar 2026 |
| Chloride 0172 | River water | 12 | Apr 2025 – Mar 2026 | 26 mg/l 24 Mar 2026 |
| Nitrite as N 0118 | River water | 12 | Apr 2025 – Mar 2026 | 0.013 mg/l 24 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 12 | Apr 2025 – Mar 2026 | 0.83 mg/l 24 Mar 2026 |
| Solids, Suspended at 105 C 0135 | River water | 12 | Apr 2025 – Mar 2026 | 7 mg/l 24 Mar 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.