River Bollin at Ashley Bridge
EA name: RIVER BOLLIN AT ASHLEY BRIDGE
Environment Agency sampling point NW-88002568 · 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
- 30 Apr 2026, 11:435 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 30 Sep 2026 and had nothing newer.
- Samples banked
- 32 since 20 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 376993, 385690As published, to the nearest 1 m. Open in a map
- River, by its own name
- Bollin
- River, by the map
- River BollinPlaced on the river its name gives, 13 m from the line.
- Next gauge downstream
- Bollington Mill On the River Bollin · 6.7 km along the river (the path rests on a repair to the map)
- Nearest gauge upstream
- Stanneylands On the Dean · 15 km along the riverWilmslow On the River Bollin · 15 km along the river
- Why it was sampled
- Monitoring (national agency policy) (20 samples)
Environmental monitoring statutory (EU directives) (12 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
102.9%
Sampled 30 Apr 2026, 5 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 11:43 | 102.9 | 102.9% |
| 10 Mar 2026, 12:33 | 99.3 | 99.3% |
| 3 Feb 2026, 10:16 | 96.3 | 96.3% |
| 6 Jan 2026, 11:28 | 97.3 | 97.3% |
| 15 Dec 2025, 14:40 | 97.9 | 97.9% |
| 21 Nov 2025, 14:34 | 100.5 | 100.5% |
| 9 Oct 2025, 12:38 | 93.9 | 93.9% |
| 18 Sep 2025, 10:15 | 91 | 91% |
| 27 Aug 2025, 11:38 | 92.7 | 92.7% |
| 21 Jul 2025, 13:26 | 96.8 | 96.8% |
| 25 Jun 2025, 09:05 | 88.5 | 88.5% |
| 14 May 2025, 12:14 | 93.5 | 93.5% |
| 12 May 2025, 10:41 | 88.6 | 88.6% |
| 24 Apr 2025, 12:05 | 98.2 | 98.2% |
| 2 Apr 2025, 14:58 | 125.7 | 125.7% |
| 20 Mar 2024, 09:03 | 90.4 | 90.4% |
| 22 Feb 2024, 11:22 | 97.1 | 97.1% |
| 16 Jan 2024, 14:31 | 96.7 | 96.7% |
| 6 Dec 2023, 14:09 | 97.4 | 97.4% |
| 24 Nov 2023, 09:06 | 95.4 | 95.4% |
| 20 Oct 2023, 08:28 | 93.7 | 93.7% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.9 mg/l
Sampled 30 Apr 2026, 5 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 11:43 | 10.9 | 10.9 mg/l |
| 10 Mar 2026, 12:33 | 11.4 | 11.4 mg/l |
| 3 Feb 2026, 10:16 | 11.9 | 11.9 mg/l |
| 6 Jan 2026, 11:28 | 13.6 | 13.6 mg/l |
| 15 Dec 2025, 14:40 | 11.2 | 11.2 mg/l |
| 21 Nov 2025, 14:34 | 12.7 | 12.7 mg/l |
| 9 Oct 2025, 12:38 | 9.89 | 9.89 mg/l |
| 18 Sep 2025, 10:15 | 9.33 | 9.33 mg/l |
| 27 Aug 2025, 11:38 | 8.97 | 8.97 mg/l |
| 21 Jul 2025, 13:26 | 9.17 | 9.17 mg/l |
| 25 Jun 2025, 09:05 | 8.64 | 8.64 mg/l |
| 14 May 2025, 12:14 | 9.52 | 9.52 mg/l |
| 12 May 2025, 10:41 | 9.07 | 9.07 mg/l |
| 24 Apr 2025, 12:05 | 10.6 | 10.6 mg/l |
| 2 Apr 2025, 14:58 | 13.6 | 13.6 mg/l |
| 20 Mar 2024, 09:03 | 10 | 10 mg/l |
| 22 Feb 2024, 11:22 | 11.5 | 11.5 mg/l |
| 16 Jan 2024, 14:31 | 12.8 | 12.8 mg/l |
| 6 Dec 2023, 14:09 | 12.6 | 12.6 mg/l |
| 24 Nov 2023, 09:06 | 11 | 11 mg/l |
| 20 Oct 2023, 08:28 | 9.76 | 9.76 mg/l |
Water temperature
code 0076 · °C
12.8 °C
Sampled 30 Apr 2026, 5 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 11:43 | 12.8 | 12.8 °C |
| 10 Mar 2026, 12:33 | 9.3 | 9.3 °C |
| 3 Feb 2026, 10:16 | 6.3 | 6.3 °C |
| 6 Jan 2026, 11:28 | 1.6 | 1.6 °C |
| 15 Dec 2025, 14:40 | 9.5 | 9.5 °C |
| 21 Nov 2025, 14:34 | 5.3 | 5.3 °C |
| 9 Oct 2025, 12:38 | 12.9 | 12.9 °C |
| 18 Sep 2025, 10:15 | 14.1 | 14.1 °C |
| 27 Aug 2025, 11:38 | 16.8 | 16.8 °C |
| 21 Jul 2025, 13:26 | 17.8 | 17.8 °C |
| 25 Jun 2025, 09:05 | 16.4 | 16.4 °C |
| 14 May 2025, 12:14 | 14.4 | 14.4 °C |
| 12 May 2025, 10:41 | 14.2 | 14.2 °C |
| 24 Apr 2025, 12:05 | 12 | 12 °C |
| 2 Apr 2025, 14:58 | 11.8 | 11.8 °C |
| 20 Mar 2024, 09:03 | 10.6 | 10.6 °C |
| 22 Feb 2024, 11:22 | 8 | 8 °C |
| 16 Jan 2024, 14:31 | 3.5 | 3.5 °C |
| 6 Dec 2023, 14:09 | 4.5 | 4.5 °C |
| 24 Nov 2023, 09:06 | 9.2 | 9.2 °C |
| 20 Oct 2023, 08:28 | 13.4 | 13.4 °C |
pH
code 0061
8.17
Sampled 30 Apr 2026, 5 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 11:43 | 8.17 | 8.17 |
| 10 Mar 2026, 12:33 | 8.09 | 8.09 |
| 3 Feb 2026, 10:16 | 8.11 | 8.11 |
| 6 Jan 2026, 11:28 | 8.14 | 8.14 |
| 15 Dec 2025, 14:40 | 7.68 | 7.68 |
| 21 Nov 2025, 14:34 | 8.07 | 8.07 |
| 9 Oct 2025, 12:38 | 7.87 | 7.87 |
| 18 Sep 2025, 10:15 | 8.07 | 8.07 |
| 27 Aug 2025, 11:38 | 8.22 | 8.22 |
| 21 Jul 2025, 13:26 | 8.09 | 8.09 |
| 25 Jun 2025, 09:05 | <2 | below 2 (not detected above this) |
| 14 May 2025, 12:14 | 8.09 | 8.09 |
| 12 May 2025, 10:41 | 7.98 | 7.98 |
| 24 Apr 2025, 12:05 | 8.1 | 8.1 |
| 2 Apr 2025, 14:58 | 8.56 | 8.56 |
| 20 Mar 2024, 09:03 | 7.8 | 7.8 |
| 22 Feb 2024, 11:22 | 7.74 | 7.74 |
| 16 Jan 2024, 14:31 | 8.15 | 8.15 |
| 6 Dec 2023, 14:09 | 7.83 | 7.83 |
| 24 Nov 2023, 09:06 | 8 | 8 |
| 20 Oct 2023, 08:28 | 7.83 | 7.83 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 30 Apr 2026, 5 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 11:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Mar 2026, 12:33 | 0.063 | 0.063 mg/l |
| 3 Feb 2026, 10:16 | 0.15 | 0.15 mg/l |
| 6 Jan 2026, 11:28 | 0.56 | 0.56 mg/l |
| 15 Dec 2025, 14:40 | 0.51 | 0.51 mg/l |
| 21 Nov 2025, 14:34 | 0.24 | 0.24 mg/l |
| 9 Oct 2025, 12:38 | 0.045 | 0.045 mg/l |
| 18 Sep 2025, 10:15 | 0.075 | 0.075 mg/l |
| 27 Aug 2025, 11:38 | 0.034 | 0.034 mg/l |
| 21 Jul 2025, 13:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Jun 2025, 09:05 | 0.068 | 0.068 mg/l |
| 14 May 2025, 12:14 | 0.082 | 0.082 mg/l |
| 12 May 2025, 10:41 | 0.1 | 0.1 mg/l |
| 24 Apr 2025, 12:05 | 0.096 | 0.096 mg/l |
| 20 Mar 2024, 09:03 | 0.59 | 0.59 mg/l |
| 22 Feb 2024, 11:22 | 0.27 | 0.27 mg/l |
| 16 Jan 2024, 14:31 | 0.73 | 0.73 mg/l |
| 6 Dec 2023, 14:09 | 0.2 | 0.2 mg/l |
| 24 Nov 2023, 09:06 | 0.19 | 0.19 mg/l |
| 20 Oct 2023, 08:28 | 0.21 | 0.21 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
5.27 mg/l
Sampled 30 Apr 2026, 5 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 11:43 | 5.27 | 5.27 mg/l |
| 10 Mar 2026, 12:33 | 3.57 | 3.57 mg/l |
| 3 Feb 2026, 10:16 | 3.36 | 3.36 mg/l |
| 6 Jan 2026, 11:28 | 4.44 | 4.44 mg/l |
| 15 Dec 2025, 14:40 | 1.25 | 1.25 mg/l |
| 21 Nov 2025, 14:34 | 2.45 | 2.45 mg/l |
| 9 Oct 2025, 12:38 | 3.77 | 3.77 mg/l |
| 18 Sep 2025, 10:15 | 2.36 | 2.36 mg/l |
| 27 Aug 2025, 11:38 | 3.39 | 3.39 mg/l |
| 21 Jul 2025, 13:26 | 4.28 | 4.28 mg/l |
| 25 Jun 2025, 09:05 | 3.46 | 3.46 mg/l |
| 14 May 2025, 12:14 | 5.35 | 5.35 mg/l |
| 12 May 2025, 10:41 | 5.74 | 5.74 mg/l |
| 24 Apr 2025, 12:05 | 5.52 | 5.52 mg/l |
| 20 Mar 2024, 09:03 | 4.44 | 4.44 mg/l |
| 22 Feb 2024, 11:22 | 1.67 | 1.67 mg/l |
| 16 Jan 2024, 14:31 | 4.74 | 4.74 mg/l |
| 6 Dec 2023, 14:09 | 2.86 | 2.86 mg/l |
| 24 Nov 2023, 09:06 | 4.23 | 4.23 mg/l |
| 20 Oct 2023, 08:28 | 2.86 | 2.86 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.11 mg/l
Sampled 30 Apr 2026, 5 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 11:43 | 0.11 | 0.11 mg/l |
| 10 Mar 2026, 12:33 | 0.11 | 0.11 mg/l |
| 3 Feb 2026, 10:16 | 0.072 | 0.072 mg/l |
| 6 Jan 2026, 11:28 | 0.085 | 0.085 mg/l |
| 15 Dec 2025, 14:40 | 0.13 | 0.13 mg/l |
| 21 Nov 2025, 14:34 | 0.07 | 0.07 mg/l |
| 9 Oct 2025, 12:38 | 0.12 | 0.12 mg/l |
| 18 Sep 2025, 10:15 | 0.11 | 0.11 mg/l |
| 27 Aug 2025, 11:38 | 0.16 | 0.16 mg/l |
| 21 Jul 2025, 13:26 | 0.14 | 0.14 mg/l |
| 25 Jun 2025, 09:05 | 0.15 | 0.15 mg/l |
| 14 May 2025, 12:14 | 0.2 | 0.2 mg/l |
| 12 May 2025, 10:41 | 0.19 | 0.19 mg/l |
| 24 Apr 2025, 12:05 | 0.15 | 0.15 mg/l |
| 20 Mar 2024, 09:03 | 0.42 | 0.42 mg/l |
| 22 Feb 2024, 11:22 | 0.12 | 0.12 mg/l |
| 16 Jan 2024, 14:31 | 0.44 | 0.44 mg/l |
| 6 Dec 2023, 14:09 | 0.21 | 0.21 mg/l |
| 24 Nov 2023, 09:06 | 0.31 | 0.31 mg/l |
| 20 Oct 2023, 08:28 | 0.36 | 0.36 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
529 µS/cm
Sampled 30 Apr 2026, 5 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 11:43 | 529 | 529 µS/cm |
| 10 Mar 2026, 12:33 | 461 | 461 µS/cm |
| 3 Feb 2026, 10:16 | 399 | 399 µS/cm |
| 6 Jan 2026, 11:28 | 585 | 585 µS/cm |
| 15 Dec 2025, 14:40 | 249 | 249 µS/cm |
| 21 Nov 2025, 14:34 | 387 | 387 µS/cm |
| 9 Oct 2025, 12:38 | 480 | 480 µS/cm |
| 18 Sep 2025, 10:15 | 356 | 356 µS/cm |
| 27 Aug 2025, 11:38 | 618 | 618 µS/cm |
| 21 Jul 2025, 13:26 | 514 | 514 µS/cm |
| 25 Jun 2025, 09:05 | 477 | 477 µS/cm |
| 14 May 2025, 12:14 | 564 | 564 µS/cm |
| 12 May 2025, 10:41 | 567 | 567 µS/cm |
| 24 Apr 2025, 12:05 | 554 | 554 µS/cm |
| 2 Apr 2025, 14:58 | 528 | 528 µS/cm |
| 20 Mar 2024, 09:03 | 411 | 411 µS/cm |
| 22 Feb 2024, 11:22 | 274 | 274 µS/cm |
| 16 Jan 2024, 14:31 | 683 | 683 µS/cm |
| 6 Dec 2023, 14:09 | 403 | 403 µS/cm |
| 24 Nov 2023, 09:06 | 366 | 366 µS/cm |
| 20 Oct 2023, 08:28 | 345 | 345 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 | 21 | Oct 2023 – Apr 2026 | 102.9% 30 Apr 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 21 | Oct 2023 – Apr 2026 | 10.9 mg/l 30 Apr 2026 |
| Temperature of Water 0076 | River water | 21 | Oct 2023 – Apr 2026 | 12.8 °C 30 Apr 2026 |
| pH 0061 | River water | 21 | Oct 2023 – Apr 2026 | 8.17 30 Apr 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 20 | Oct 2023 – Apr 2026 | below 0.03 mg/l 30 Apr 2026 |
| Nitrate as N 0117 | River water | 20 | Oct 2023 – Apr 2026 | 5.27 mg/l 30 Apr 2026 |
| Orthophosphate, reactive as P 0180 | River water | 20 | Oct 2023 – Apr 2026 | 0.11 mg/l 30 Apr 2026 |
| Conductivity at 25 C 0077 | River water | 21 | Oct 2023 – Apr 2026 | 529 µS/cm 30 Apr 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 20 | Oct 2023 – Apr 2026 | 130 mg/l 30 Apr 2026 |
| Ammonia un-ionised as N 0119 | River water | 20 | Oct 2023 – Apr 2026 | below 0.00067 mg/l 30 Apr 2026 |
| BOD : 5 Day ATU 0085 | River water | 26 | Feb 2024 – Apr 2026 | 1.4 mg/l 30 Apr 2026 |
| Chloride 0172 | River water | 11 | May 2025 – Mar 2026 | 39 mg/l 10 Mar 2026 |
| Chlorophyll : Acetone Extract 7887 | River water | 6 | Apr 2025 – Mar 2026 | 2.8 µg/l 10 Mar 2026 |
| Nitrite as N 0118 | River water | 20 | Oct 2023 – Apr 2026 | 0.029 mg/l 30 Apr 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 20 | Oct 2023 – Apr 2026 | 5.3 mg/l 30 Apr 2026 |
| Solids, Suspended at 105 C 0135 | River water | 11 | May 2025 – Mar 2026 | 7.6 mg/l 10 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.