River Lew at Hatherleigh Bridge
EA name: RIVER LEW AT HATHERLEIGH BRIDGE (also listed as “R.LEW @ H'LEIGH BR U/S H'LEIGH STW (ALT DATA ON URN WSTW3127A)”)
Environment Agency sampling point SW-72930819 · 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
- 2 Sep 2026, 10:5029 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 22 since 2 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (local monitoring)
- Where
- National Grid 254058, 104185As published, to the nearest 1 m. Open in a map
- River, by its own name
- Lew
- River, by the map
- River LewPlaced on the river its name gives, 1 m from the line.
- Next gauge downstream
- Dolton On the River Torridge · 10 km along the river
- Nearest gauge upstream
- Gribbleford Bridge On the River Lew · 4.9 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (22 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
66.5%
Sampled 2 Sep 2026, 29 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 10:50 | 66.5 | 66.5% |
| 10 Aug 2026, 14:37 | 84.9 | 84.9% |
| 13 Jul 2026, 09:57 | 76.1 | 76.1% |
| 22 Jun 2026, 10:33 | 95.7 | 95.7% |
| 8 May 2026, 14:13 | 103 | 103% |
| 16 Apr 2026, 09:06 | 98.3 | 98.3% |
| 31 Mar 2025, 10:12 | 100.3 | 100.3% |
| 7 Feb 2025, 10:12 | 99.4 | 99.4% |
| 3 Jan 2025, 12:01 | 97.6 | 97.6% |
| 10 Dec 2024, 09:53 | 97.2 | 97.2% |
| 26 Nov 2024, 13:08 | 98 | 98% |
| 14 Oct 2024, 09:50 | 99.2 | 99.2% |
| 2 Sep 2024, 09:25 | 102.4 | 102.4% |
| 6 Aug 2024, 10:13 | 97.2 | 97.2% |
| 2 Jul 2024, 09:47 | 102.4 | 102.4% |
| 5 Jun 2024, 09:49 | 99.6 | 99.6% |
| 8 Mar 2024, 13:23 | 100.3 | 100.3% |
| 1 Feb 2024, 11:43 | 97.2 | 97.2% |
| 2 Jan 2024, 09:56 | 97.4 | 97.4% |
| 5 Dec 2023, 07:30 | 97.4 | 97.4% |
| 8 Nov 2023, 14:16 | 97.9 | 97.9% |
| 2 Oct 2023, 11:06 | 96.6 | 96.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.63 mg/l
Sampled 2 Sep 2026, 29 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 10:50 | 6.63 | 6.63 mg/l |
| 10 Aug 2026, 14:37 | 7.82 | 7.82 mg/l |
| 13 Jul 2026, 09:57 | 7.08 | 7.08 mg/l |
| 22 Jun 2026, 10:33 | 8.94 | 8.94 mg/l |
| 8 May 2026, 14:13 | 10.9 | 10.9 mg/l |
| 16 Apr 2026, 09:06 | 10.8 | 10.8 mg/l |
| 31 Mar 2025, 10:12 | 11.7 | 11.7 mg/l |
| 7 Feb 2025, 10:12 | 12.9 | 12.9 mg/l |
| 3 Jan 2025, 12:01 | 12.8 | 12.8 mg/l |
| 10 Dec 2024, 09:53 | 11.6 | 11.6 mg/l |
| 26 Nov 2024, 13:08 | 11.4 | 11.4 mg/l |
| 14 Oct 2024, 09:50 | 10.7 | 10.7 mg/l |
| 2 Sep 2024, 09:25 | 10.1 | 10.1 mg/l |
| 6 Aug 2024, 10:13 | 9.41 | 9.41 mg/l |
| 2 Jul 2024, 09:47 | 10.4 | 10.4 mg/l |
| 5 Jun 2024, 09:49 | 10.5 | 10.5 mg/l |
| 8 Mar 2024, 13:23 | 12.2 | 12.2 mg/l |
| 1 Feb 2024, 11:43 | 11.6 | 11.6 mg/l |
| 2 Jan 2024, 09:56 | 10.9 | 10.9 mg/l |
| 5 Dec 2023, 07:30 | 11.8 | 11.8 mg/l |
| 8 Nov 2023, 14:16 | 10.8 | 10.8 mg/l |
| 2 Oct 2023, 11:06 | 9.63 | 9.63 mg/l |
Water temperature
code 0076 · °C
15.4 °C
Sampled 2 Sep 2026, 29 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 10:50 | 15.4 | 15.4 °C |
| 10 Aug 2026, 14:37 | 19.2 | 19.2 °C |
| 13 Jul 2026, 09:57 | 18.7 | 18.7 °C |
| 22 Jun 2026, 10:33 | 18.5 | 18.5 °C |
| 8 May 2026, 14:13 | 12.8 | 12.8 °C |
| 16 Apr 2026, 09:06 | 11 | 11 °C |
| 31 Mar 2025, 10:12 | 8.7 | 8.7 °C |
| 7 Feb 2025, 10:12 | 4.3 | 4.3 °C |
| 3 Jan 2025, 12:01 | 3.9 | 3.9 °C |
| 10 Dec 2024, 09:53 | 7.5 | 7.5 °C |
| 26 Nov 2024, 13:08 | 8.8 | 8.8 °C |
| 14 Oct 2024, 09:50 | 11.7 | 11.7 °C |
| 2 Sep 2024, 09:25 | 16 | 16 °C |
| 6 Aug 2024, 10:13 | 16.8 | 16.8 °C |
| 2 Jul 2024, 09:47 | 14.6 | 14.6 °C |
| 5 Jun 2024, 09:49 | 12.9 | 12.9 °C |
| 8 Mar 2024, 13:23 | 7 | 7 °C |
| 1 Feb 2024, 11:43 | 7.7 | 7.7 °C |
| 2 Jan 2024, 09:56 | 10.3 | 10.3 °C |
| 5 Dec 2023, 07:30 | 7.1 | 7.1 °C |
| 8 Nov 2023, 14:16 | 11 | 11 °C |
| 2 Oct 2023, 11:06 | 15.4 | 15.4 °C |
pH
code 0061
7.59
Sampled 2 Sep 2026, 29 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 10:50 | 7.59 | 7.59 |
| 10 Aug 2026, 14:37 | 7.35 | 7.35 |
| 13 Jul 2026, 09:57 | 7.43 | 7.43 |
| 22 Jun 2026, 10:33 | 7.58 | 7.58 |
| 8 May 2026, 14:13 | 7.74 | 7.74 |
| 16 Apr 2026, 09:06 | 7.61 | 7.61 |
| 31 Mar 2025, 10:12 | 7.74 | 7.74 |
| 7 Feb 2025, 10:12 | 7.51 | 7.51 |
| 3 Jan 2025, 12:01 | 7.4 | 7.4 |
| 10 Dec 2024, 09:53 | 7.21 | 7.21 |
| 26 Nov 2024, 13:08 | 7.2 | 7.2 |
| 14 Oct 2024, 09:50 | 8.96 | 8.96 |
| 2 Sep 2024, 09:25 | 8.12 | 8.12 |
| 6 Aug 2024, 10:13 | 8.07 | 8.07 |
| 2 Jul 2024, 09:47 | 7.76 | 7.76 |
| 5 Jun 2024, 09:49 | 7.74 | 7.74 |
| 8 Mar 2024, 13:23 | 7.44 | 7.44 |
| 1 Feb 2024, 11:43 | 7.48 | 7.48 |
| 2 Jan 2024, 09:56 | 7.65 | 7.65 |
| 5 Dec 2023, 07:30 | 7.68 | 7.68 |
| 8 Nov 2023, 14:16 | 7.09 | 7.09 |
| 2 Oct 2023, 11:06 | 7.5 | 7.5 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.12 mg/l
Sampled 10 Aug 2026, 52 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 14:37 | 0.12 | 0.12 mg/l |
| 13 Jul 2026, 09:57 | 0.031 | 0.031 mg/l |
| 22 Jun 2026, 10:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 May 2026, 14:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Apr 2026, 09:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 31 Mar 2025, 10:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Feb 2025, 10:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jan 2025, 12:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Dec 2024, 09:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Nov 2024, 13:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Oct 2024, 09:50 | 0.084 | 0.084 mg/l |
| 2 Sep 2024, 09:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Aug 2024, 10:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jul 2024, 09:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Jun 2024, 09:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Mar 2024, 13:23 | 0.06 | 0.06 mg/l |
| 1 Feb 2024, 11:43 | 0.036 | 0.036 mg/l |
| 2 Jan 2024, 09:56 | 0.1 | 0.1 mg/l |
| 5 Dec 2023, 07:30 | 0.11 | 0.11 mg/l |
| 8 Nov 2023, 14:16 | 0.076 | 0.076 mg/l |
| 2 Oct 2023, 11:06 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.293 mg/l
Sampled 10 Aug 2026, 52 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 14:37 | 0.293 | 0.293 mg/l |
| 13 Jul 2026, 09:57 | 0.396 | 0.396 mg/l |
| 22 Jun 2026, 10:33 | 0.856 | 0.856 mg/l |
| 8 May 2026, 14:13 | 0.766 | 0.766 mg/l |
| 16 Apr 2026, 09:06 | 0.836 | 0.836 mg/l |
| 31 Mar 2025, 10:12 | 0.696 | 0.696 mg/l |
| 7 Feb 2025, 10:12 | 1.4 | 1.4 mg/l |
| 3 Jan 2025, 12:01 | 1.4 | 1.4 mg/l |
| 10 Dec 2024, 09:53 | 1.7 | 1.7 mg/l |
| 26 Nov 2024, 13:08 | 1.7 | 1.7 mg/l |
| 14 Oct 2024, 09:50 | 0.613 | 0.613 mg/l |
| 2 Sep 2024, 09:25 | 0.606 | 0.606 mg/l |
| 6 Aug 2024, 10:13 | 0.626 | 0.626 mg/l |
| 2 Jul 2024, 09:47 | 0.646 | 0.646 mg/l |
| 5 Jun 2024, 09:49 | 1.1 | 1.1 mg/l |
| 8 Mar 2024, 13:23 | 1.59 | 1.59 mg/l |
| 1 Feb 2024, 11:43 | 1.49 | 1.49 mg/l |
| 2 Jan 2024, 09:56 | 1.29 | 1.29 mg/l |
| 5 Dec 2023, 07:30 | 0.746 | 0.746 mg/l |
| 8 Nov 2023, 14:16 | 0.914 | 0.914 mg/l |
| 2 Oct 2023, 11:06 | 1.1 | 1.1 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.03 mg/l
Sampled 10 Aug 2026, 52 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 14:37 | 0.03 | 0.03 mg/l |
| 13 Jul 2026, 09:57 | 0.034 | 0.034 mg/l |
| 22 Jun 2026, 10:33 | 0.036 | 0.036 mg/l |
| 8 May 2026, 14:13 | 0.043 | 0.043 mg/l |
| 16 Apr 2026, 09:06 | 0.028 | 0.028 mg/l |
| 31 Mar 2025, 10:12 | 0.013 | 0.013 mg/l |
| 7 Feb 2025, 10:12 | 0.02 | 0.02 mg/l |
| 3 Jan 2025, 12:01 | 0.02 | 0.02 mg/l |
| 10 Dec 2024, 09:53 | 0.015 | 0.015 mg/l |
| 26 Nov 2024, 13:08 | 0.024 | 0.024 mg/l |
| 14 Oct 2024, 09:50 | 0.085 | 0.085 mg/l |
| 2 Sep 2024, 09:25 | 0.022 | 0.022 mg/l |
| 6 Aug 2024, 10:13 | 0.028 | 0.028 mg/l |
| 2 Jul 2024, 09:47 | 0.022 | 0.022 mg/l |
| 5 Jun 2024, 09:49 | 0.032 | 0.032 mg/l |
| 8 Mar 2024, 13:23 | 0.025 | 0.025 mg/l |
| 1 Feb 2024, 11:43 | 0.033 | 0.033 mg/l |
| 2 Jan 2024, 09:56 | 0.029 | 0.029 mg/l |
| 5 Dec 2023, 07:30 | 0.033 | 0.033 mg/l |
| 8 Nov 2023, 14:16 | 0.025 | 0.025 mg/l |
| 2 Oct 2023, 11:06 | 0.024 | 0.024 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
436 µS/cm
Sampled 2 Sep 2026, 29 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 10:50 | 436 | 436 µS/cm |
| 10 Aug 2026, 14:37 | 241 | 241 µS/cm |
| 13 Jul 2026, 09:57 | 185 | 185 µS/cm |
| 22 Jun 2026, 10:33 | 178 | 178 µS/cm |
| 8 May 2026, 14:13 | 164 | 164 µS/cm |
| 16 Apr 2026, 09:06 | 147 | 147 µS/cm |
| 31 Mar 2025, 10:12 | 166 | 166 µS/cm |
| 7 Feb 2025, 10:12 | 140 | 140 µS/cm |
| 3 Jan 2025, 12:01 | 153 | 153 µS/cm |
| 10 Dec 2024, 09:53 | 140 | 140 µS/cm |
| 26 Nov 2024, 13:08 | 123 | 123 µS/cm |
| 14 Oct 2024, 09:50 | 129 | 129 µS/cm |
| 2 Sep 2024, 09:25 | 198 | 198 µS/cm |
| 6 Aug 2024, 10:13 | 177 | 177 µS/cm |
| 2 Jul 2024, 09:47 | 193 | 193 µS/cm |
| 5 Jun 2024, 09:49 | 168 | 168 µS/cm |
| 8 Mar 2024, 13:23 | 137 | 137 µS/cm |
| 1 Feb 2024, 11:43 | 152 | 152 µS/cm |
| 2 Jan 2024, 09:56 | 129 | 129 µS/cm |
| 5 Dec 2023, 07:30 | 104 | 104 µS/cm |
| 8 Nov 2023, 14:16 | 129 | 129 µS/cm |
| 2 Oct 2023, 11:06 | 156 | 156 µS/cm |
Everything measured here
12 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 12 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 22 | Oct 2023 – Sep 2026 | 66.5% 2 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Oct 2023 – Sep 2026 | 6.63 mg/l 2 Sep 2026 |
| Temperature of Water 0076 | River water | 22 | Oct 2023 – Sep 2026 | 15.4 °C 2 Sep 2026 |
| pH 0061 | River water | 22 | Oct 2023 – Sep 2026 | 7.59 2 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 21 | Oct 2023 – Aug 2026 | 0.12 mg/l 10 Aug 2026 |
| Nitrate as N 0117 | River water | 21 | Oct 2023 – Aug 2026 | 0.293 mg/l 10 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 21 | Oct 2023 – Aug 2026 | 0.03 mg/l 10 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 22 | Oct 2023 – Sep 2026 | 436 µS/cm 2 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 20 | Oct 2023 – Aug 2026 | 76 mg/l 10 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 21 | Oct 2023 – Aug 2026 | 0.00098 mg/l 10 Aug 2026 |
| Nitrite as N 0118 | River water | 21 | Oct 2023 – Aug 2026 | 0.017 mg/l 10 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Oct 2023 – Aug 2026 | 0.31 mg/l 10 Aug 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.