River Lea upstream of Madeley Etw
EA name: RIVER LEA U/S MADELEY ETW
Environment Agency sampling point NW-88000644 · 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
- 29 May 2026, 14:404 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 17 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 376901, 345203As published, to the nearest 1 m. Open in a map
- River, by its own name
- Lea
- River, by the map
- River LeaPlaced on the river its name gives, 11 m from the line.
- Next gauge downstream
- Shrewbridge On the River Weaver · 20 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 · %
83.3%
Sampled 29 May 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:40 | 83.3 | 83.3% |
| 22 Apr 2026, 09:24 | 100.1 | 100.1% |
| 20 Mar 2026, 09:02 | 97.3 | 97.3% |
| 27 Feb 2026, 09:35 | 97.2 | 97.2% |
| 22 Jan 2026, 15:35 | 97.8 | 97.8% |
| 4 Dec 2025, 12:54 | 96 | 96% |
| 3 Nov 2025, 13:28 | 82.6 | 82.6% |
| 8 Oct 2025, 11:17 | 84.6 | 84.6% |
| 18 Sep 2025, 10:25 | 90.2 | 90.2% |
| 18 Aug 2025, 11:59 | 71 | 71% |
| 11 Jul 2025, 09:37 | 67.5 | 67.5% |
| 20 Jun 2025, 12:07 | 82.8 | 82.8% |
| 12 May 2025, 11:07 | 94.2 | 94.2% |
| 22 Apr 2025, 12:28 | 97.7 | 97.7% |
| 21 Mar 2024, 13:08 | 95.3 | 95.3% |
| 20 Feb 2024, 09:38 | 96.1 | 96.1% |
| 22 Jan 2024, 10:18 | 92.8 | 92.8% |
| 21 Dec 2023, 13:01 | 93.3 | 93.3% |
| 28 Nov 2023, 09:56 | 94.8 | 94.8% |
| 17 Oct 2023, 11:16 | 93.8 | 93.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.79 mg/l
Sampled 29 May 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:40 | 7.79 | 7.79 mg/l |
| 22 Apr 2026, 09:24 | 11.1 | 11.1 mg/l |
| 20 Mar 2026, 09:02 | 11.2 | 11.2 mg/l |
| 27 Feb 2026, 09:35 | 11.3 | 11.3 mg/l |
| 22 Jan 2026, 15:35 | 11.6 | 11.6 mg/l |
| 4 Dec 2025, 12:54 | 11.5 | 11.5 mg/l |
| 3 Nov 2025, 13:28 | 9 | 9 mg/l |
| 8 Oct 2025, 11:17 | 8.97 | 8.97 mg/l |
| 18 Sep 2025, 10:25 | 9.27 | 9.27 mg/l |
| 18 Aug 2025, 11:59 | 7.03 | 7.03 mg/l |
| 11 Jul 2025, 09:37 | 6.53 | 6.53 mg/l |
| 20 Jun 2025, 12:07 | 7.8 | 7.8 mg/l |
| 12 May 2025, 11:07 | 9.45 | 9.45 mg/l |
| 22 Apr 2025, 12:28 | 10.4 | 10.4 mg/l |
| 21 Mar 2024, 13:08 | 10.6 | 10.6 mg/l |
| 20 Feb 2024, 09:38 | 11.2 | 11.2 mg/l |
| 22 Jan 2024, 10:18 | 11.4 | 11.4 mg/l |
| 21 Dec 2023, 13:01 | 10.8 | 10.8 mg/l |
| 28 Nov 2023, 09:56 | 11.7 | 11.7 mg/l |
| 17 Oct 2023, 11:16 | 10.6 | 10.6 mg/l |
Water temperature
code 0076 · °C
18.5 °C
Sampled 29 May 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:40 | 18.5 | 18.5 °C |
| 22 Apr 2026, 09:24 | 10.5 | 10.5 °C |
| 20 Mar 2026, 09:02 | 9.1 | 9.1 °C |
| 27 Feb 2026, 09:35 | 8.8 | 8.8 °C |
| 22 Jan 2026, 15:35 | 7.9 | 7.9 °C |
| 4 Dec 2025, 12:54 | 7.5 | 7.5 °C |
| 3 Nov 2025, 13:28 | 11.4 | 11.4 °C |
| 8 Oct 2025, 11:17 | 12.6 | 12.6 °C |
| 18 Sep 2025, 10:25 | 14 | 14 °C |
| 18 Aug 2025, 11:59 | 15.7 | 15.7 °C |
| 11 Jul 2025, 09:37 | 16.8 | 16.8 °C |
| 20 Jun 2025, 12:07 | 18.1 | 18.1 °C |
| 12 May 2025, 11:07 | 15.1 | 15.1 °C |
| 22 Apr 2025, 12:28 | 12.6 | 12.6 °C |
| 21 Mar 2024, 13:08 | 10.5 | 10.5 °C |
| 20 Feb 2024, 09:38 | 8.5 | 8.5 °C |
| 22 Jan 2024, 10:18 | 6.5 | 6.5 °C |
| 21 Dec 2023, 13:01 | 9 | 9 °C |
| 28 Nov 2023, 09:56 | 6.4 | 6.4 °C |
| 17 Oct 2023, 11:16 | 10 | 10 °C |
pH
code 0061
7.74
Sampled 29 May 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:40 | 7.74 | 7.74 |
| 22 Apr 2026, 09:24 | 7.7 | 7.7 |
| 20 Mar 2026, 09:02 | 7.85 | 7.85 |
| 27 Feb 2026, 09:35 | 7.94 | 7.94 |
| 22 Jan 2026, 15:35 | 8 | 8 |
| 4 Dec 2025, 12:54 | 7.85 | 7.85 |
| 3 Nov 2025, 13:28 | 7.74 | 7.74 |
| 8 Oct 2025, 11:17 | 7.79 | 7.79 |
| 18 Sep 2025, 10:25 | 7.89 | 7.89 |
| 18 Aug 2025, 11:59 | 7.55 | 7.55 |
| 11 Jul 2025, 09:37 | 7.48 | 7.48 |
| 20 Jun 2025, 12:07 | 7.83 | 7.83 |
| 12 May 2025, 11:07 | 8.04 | 8.04 |
| 22 Apr 2025, 12:28 | 8.19 | 8.19 |
| 21 Mar 2024, 13:08 | 7.97 | 7.97 |
| 20 Feb 2024, 09:38 | 7.68 | 7.68 |
| 22 Jan 2024, 10:18 | 7.69 | 7.69 |
| 21 Dec 2023, 13:01 | 7.9 | 7.9 |
| 28 Nov 2023, 09:56 | 7.87 | 7.87 |
| 17 Oct 2023, 11:16 | 7.83 | 7.83 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.32 mg/l
Sampled 29 May 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:40 | 0.32 | 0.32 mg/l |
| 22 Apr 2026, 09:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Mar 2026, 09:02 | 0.064 | 0.064 mg/l |
| 27 Feb 2026, 09:35 | 0.14 | 0.14 mg/l |
| 22 Jan 2026, 15:35 | 0.44 | 0.44 mg/l |
| 4 Dec 2025, 12:54 | 0.12 | 0.12 mg/l |
| 3 Nov 2025, 13:28 | 0.059 | 0.059 mg/l |
| 8 Oct 2025, 11:17 | 0.069 | 0.069 mg/l |
| 18 Sep 2025, 10:25 | 0.1 | 0.1 mg/l |
| 18 Aug 2025, 11:59 | 0.089 | 0.089 mg/l |
| 11 Jul 2025, 09:37 | 0.26 | 0.26 mg/l |
| 20 Jun 2025, 12:07 | 0.06 | 0.06 mg/l |
| 12 May 2025, 11:07 | 0.041 | 0.041 mg/l |
| 22 Apr 2025, 12:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Mar 2024, 13:08 | 0.21 | 0.21 mg/l |
| 20 Feb 2024, 09:38 | 0.35 | 0.35 mg/l |
| 22 Jan 2024, 10:18 | 1.3 | 1.3 mg/l |
| 21 Dec 2023, 13:01 | 0.22 | 0.22 mg/l |
| 28 Nov 2023, 09:56 | 0.1 | 0.1 mg/l |
| 17 Oct 2023, 11:16 | 0.097 | 0.097 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
6.46 mg/l
Sampled 29 May 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:40 | 6.46 | 6.46 mg/l |
| 22 Apr 2026, 09:24 | 6.17 | 6.17 mg/l |
| 20 Mar 2026, 09:02 | 6.67 | 6.67 mg/l |
| 27 Feb 2026, 09:35 | 6.54 | 6.54 mg/l |
| 22 Jan 2026, 15:35 | 8.09 | 8.09 mg/l |
| 4 Dec 2025, 12:54 | 9.83 | 9.83 mg/l |
| 3 Nov 2025, 13:28 | 6.25 | 6.25 mg/l |
| 8 Oct 2025, 11:17 | 6.16 | 6.16 mg/l |
| 18 Sep 2025, 10:25 | 4.56 | 4.56 mg/l |
| 18 Aug 2025, 11:59 | 7.45 | 7.45 mg/l |
| 11 Jul 2025, 09:37 | 6.71 | 6.71 mg/l |
| 20 Jun 2025, 12:07 | 7.05 | 7.05 mg/l |
| 12 May 2025, 11:07 | 7.26 | 7.26 mg/l |
| 22 Apr 2025, 12:28 | 7.16 | 7.16 mg/l |
| 21 Mar 2024, 13:08 | 4.44 | 4.44 mg/l |
| 20 Feb 2024, 09:38 | 4.66 | 4.66 mg/l |
| 22 Jan 2024, 10:18 | 4.62 | 4.62 mg/l |
| 21 Dec 2023, 13:01 | 5.45 | 5.45 mg/l |
| 28 Nov 2023, 09:56 | 4.47 | 4.47 mg/l |
| 17 Oct 2023, 11:16 | 5.66 | 5.66 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.12 mg/l
Sampled 29 May 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:40 | 0.12 | 0.12 mg/l |
| 22 Apr 2026, 09:24 | 0.019 | 0.019 mg/l |
| 20 Mar 2026, 09:02 | 0.075 | 0.075 mg/l |
| 27 Feb 2026, 09:35 | 0.1 | 0.1 mg/l |
| 22 Jan 2026, 15:35 | 0.15 | 0.15 mg/l |
| 4 Dec 2025, 12:54 | 0.094 | 0.094 mg/l |
| 3 Nov 2025, 13:28 | 0.085 | 0.085 mg/l |
| 8 Oct 2025, 11:17 | 0.073 | 0.073 mg/l |
| 18 Sep 2025, 10:25 | 0.078 | 0.078 mg/l |
| 18 Aug 2025, 11:59 | 0.021 | 0.021 mg/l |
| 11 Jul 2025, 09:37 | 0.017 | 0.017 mg/l |
| 20 Jun 2025, 12:07 | 0.036 | 0.036 mg/l |
| 12 May 2025, 11:07 | <0.01 | below 0.01 mg/l (not detected above this) |
| 22 Apr 2025, 12:28 | <0.01 | below 0.01 mg/l (not detected above this) |
| 21 Mar 2024, 13:08 | 0.11 | 0.11 mg/l |
| 20 Feb 2024, 09:38 | 0.16 | 0.16 mg/l |
| 22 Jan 2024, 10:18 | 0.14 | 0.14 mg/l |
| 21 Dec 2023, 13:01 | 0.12 | 0.12 mg/l |
| 28 Nov 2023, 09:56 | 0.1 | 0.1 mg/l |
| 17 Oct 2023, 11:16 | 0.14 | 0.14 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
670 µS/cm
Sampled 29 May 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:40 | 670 | 670 µS/cm |
| 22 Apr 2026, 09:24 | 641 | 641 µS/cm |
| 20 Mar 2026, 09:02 | 604 | 604 µS/cm |
| 27 Feb 2026, 09:35 | 563 | 563 µS/cm |
| 22 Jan 2026, 15:35 | 530 | 530 µS/cm |
| 4 Dec 2025, 12:54 | 556 | 556 µS/cm |
| 3 Nov 2025, 13:28 | 658 | 658 µS/cm |
| 8 Oct 2025, 11:17 | 655 | 655 µS/cm |
| 18 Sep 2025, 10:25 | 606 | 606 µS/cm |
| 18 Aug 2025, 11:59 | 644 | 644 µS/cm |
| 11 Jul 2025, 09:37 | 606 | 606 µS/cm |
| 20 Jun 2025, 12:07 | 655 | 655 µS/cm |
| 12 May 2025, 11:07 | 665 | 665 µS/cm |
| 22 Apr 2025, 12:28 | 628 | 628 µS/cm |
| 21 Mar 2024, 13:08 | 535 | 535 µS/cm |
| 20 Feb 2024, 09:38 | 472 | 472 µS/cm |
| 22 Jan 2024, 10:18 | 565 | 565 µS/cm |
| 21 Dec 2023, 13:01 | 572 | 572 µS/cm |
| 28 Nov 2023, 09:56 | 525 | 525 µS/cm |
| 17 Oct 2023, 11:16 | 573 | 573 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 | 20 | Oct 2023 – May 2026 | 83.3% 29 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 20 | Oct 2023 – May 2026 | 7.79 mg/l 29 May 2026 |
| Temperature of Water 0076 | River water | 20 | Oct 2023 – May 2026 | 18.5 °C 29 May 2026 |
| pH 0061 | River water | 20 | Oct 2023 – May 2026 | 7.74 29 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 20 | Oct 2023 – May 2026 | 0.32 mg/l 29 May 2026 |
| Nitrate as N 0117 | River water | 20 | Oct 2023 – May 2026 | 6.46 mg/l 29 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 20 | Oct 2023 – May 2026 | 0.12 mg/l 29 May 2026 |
| Conductivity at 25 C 0077 | River water | 20 | Oct 2023 – May 2026 | 670 µS/cm 29 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 20 | Oct 2023 – May 2026 | 250 mg/l 29 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 20 | Oct 2023 – May 2026 | 0.00604 mg/l 29 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 27 | Feb 2024 – May 2026 | below 3 mg/l 29 May 2026 |
| Chloride 0172 | River water | 12 | Apr 2025 – Mar 2026 | 28 mg/l 20 Mar 2026 |
| Nitrite as N 0118 | River water | 20 | Oct 2023 – May 2026 | 0.14 mg/l 29 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 20 | Oct 2023 – May 2026 | 6.6 mg/l 29 May 2026 |
| Solids, Suspended at 105 C 0135 | River water | 12 | Apr 2025 – Mar 2026 | 7.2 mg/l 20 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.