River Waldon at Henscott Bridge
EA name: RIVER WALDON AT HENSCOTT BRIDGE
Environment Agency sampling point SW-72934611 · 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
- 9 Mar 2026, 10:487 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
- 23 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 Planned investigation (local monitoring)
- Where
- National Grid 241510, 108040As published, to the nearest 10 m. Open in a map
- River, by its own name
- Waldon
- River, by the map
- River WaldonPlaced on the river its name gives, 8 m from the line.
- Next gauge downstream
- Rockhay Bridge On the River Torridge · 15 km along the river
- Nearest gauge upstream
- Bradworthy On the River Waldon · 19 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (20 samples)
Planned investigation (national agency policy) (3 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
98%
Sampled 9 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Mar 2026, 10:48 | 98 | 98% |
| 16 Feb 2026, 10:13 | 93.3 | 93.3% |
| 26 Jan 2026, 10:35 | 96.8 | 96.8% |
| 4 Dec 2025, 12:54 | 93.7 | 93.7% |
| 18 Nov 2025, 10:22 | 97.6 | 97.6% |
| 9 Oct 2025, 11:33 | 93.7 | 93.7% |
| 1 Apr 2025, 13:42 | 102.9 | 102.9% |
| 17 Mar 2025, 12:52 | 100.7 | 100.7% |
| 7 Feb 2025, 12:07 | 100 | 100% |
| 2 Jan 2025, 11:03 | 95.6 | 95.6% |
| 11 Dec 2024, 10:53 | 96.9 | 96.9% |
| 27 Nov 2024, 13:42 | 95.9 | 95.9% |
| 15 Oct 2024, 09:48 | 96.3 | 96.3% |
| 2 Sep 2024, 13:46 | 104.7 | 104.7% |
| 7 Aug 2024, 11:26 | 97.2 | 97.2% |
| 12 Jul 2024, 12:13 | 97.8 | 97.8% |
| 7 Jun 2024, 12:10 | 105.5 | 105.5% |
| 26 Mar 2024, 12:15 | 97 | 97% |
| 16 Feb 2024, 11:37 | 96.9 | 96.9% |
| 8 Jan 2024, 14:14 | 98 | 98% |
| 8 Dec 2023, 12:33 | 98.3 | 98.3% |
| 3 Nov 2023, 10:29 | 94.1 | 94.1% |
| 20 Oct 2023, 13:39 | 99.2 | 99.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11 mg/l
Sampled 9 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Mar 2026, 10:48 | 11 | 11 mg/l |
| 16 Feb 2026, 10:13 | 11.1 | 11.1 mg/l |
| 26 Jan 2026, 10:35 | 11.6 | 11.6 mg/l |
| 4 Dec 2025, 12:54 | 11 | 11 mg/l |
| 18 Nov 2025, 10:22 | 11.6 | 11.6 mg/l |
| 9 Oct 2025, 11:33 | 10.1 | 10.1 mg/l |
| 1 Apr 2025, 13:42 | 11.4 | 11.4 mg/l |
| 17 Mar 2025, 12:52 | 12.4 | 12.4 mg/l |
| 7 Feb 2025, 12:07 | 12.8 | 12.8 mg/l |
| 2 Jan 2025, 11:03 | 11.8 | 11.8 mg/l |
| 11 Dec 2024, 10:53 | 11.8 | 11.8 mg/l |
| 27 Nov 2024, 13:42 | 11.1 | 11.1 mg/l |
| 15 Oct 2024, 09:48 | 10.2 | 10.2 mg/l |
| 2 Sep 2024, 13:46 | 10.1 | 10.1 mg/l |
| 7 Aug 2024, 11:26 | 9.53 | 9.53 mg/l |
| 12 Jul 2024, 12:13 | 9.88 | 9.88 mg/l |
| 7 Jun 2024, 12:10 | 11 | 11 mg/l |
| 26 Mar 2024, 12:15 | 11.1 | 11.1 mg/l |
| 16 Feb 2024, 11:37 | 10.9 | 10.9 mg/l |
| 8 Jan 2024, 14:14 | 12.4 | 12.4 mg/l |
| 8 Dec 2023, 12:33 | 11.3 | 11.3 mg/l |
| 3 Nov 2023, 10:29 | 10.4 | 10.4 mg/l |
| 20 Oct 2023, 13:39 | 10.4 | 10.4 mg/l |
Water temperature
code 0076 · °C
10 °C
Sampled 9 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Mar 2026, 10:48 | 10 | 10 °C |
| 16 Feb 2026, 10:13 | 7.8 | 7.8 °C |
| 26 Jan 2026, 10:35 | 7.6 | 7.6 °C |
| 4 Dec 2025, 12:54 | 8.3 | 8.3 °C |
| 18 Nov 2025, 10:22 | 7.9 | 7.9 °C |
| 9 Oct 2025, 11:33 | 11.7 | 11.7 °C |
| 1 Apr 2025, 13:42 | 10.8 | 10.8 °C |
| 17 Mar 2025, 12:52 | 6.4 | 6.4 °C |
| 7 Feb 2025, 12:07 | 4.9 | 4.9 °C |
| 2 Jan 2025, 11:03 | 6.3 | 6.3 °C |
| 11 Dec 2024, 10:53 | 6.9 | 6.9 °C |
| 27 Nov 2024, 13:42 | 9 | 9 °C |
| 15 Oct 2024, 09:48 | 12.5 | 12.5 °C |
| 2 Sep 2024, 13:46 | 17.1 | 17.1 °C |
| 7 Aug 2024, 11:26 | 16.2 | 16.2 °C |
| 12 Jul 2024, 12:13 | 14.8 | 14.8 °C |
| 7 Jun 2024, 12:10 | 13.5 | 13.5 °C |
| 26 Mar 2024, 12:15 | 9.3 | 9.3 °C |
| 16 Feb 2024, 11:37 | 9.9 | 9.9 °C |
| 8 Jan 2024, 14:14 | 5.2 | 5.2 °C |
| 8 Dec 2023, 12:33 | 9.2 | 9.2 °C |
| 3 Nov 2023, 10:29 | 10.8 | 10.8 °C |
| 20 Oct 2023, 13:39 | 13.2 | 13.2 °C |
pH
code 0061
7.44
Sampled 9 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Mar 2026, 10:48 | 7.44 | 7.44 |
| 16 Feb 2026, 10:13 | 7.41 | 7.41 |
| 26 Jan 2026, 10:35 | 7.35 | 7.35 |
| 4 Dec 2025, 12:54 | 7.13 | 7.13 |
| 18 Nov 2025, 10:22 | 7.14 | 7.14 |
| 9 Oct 2025, 11:33 | 7.46 | 7.46 |
| 1 Apr 2025, 13:42 | 8.21 | 8.21 |
| 17 Mar 2025, 12:52 | 7.72 | 7.72 |
| 7 Feb 2025, 12:07 | 7.53 | 7.53 |
| 2 Jan 2025, 11:03 | 7.15 | 7.15 |
| 11 Dec 2024, 10:53 | 7.75 | 7.75 |
| 27 Nov 2024, 13:42 | 7.1 | 7.1 |
| 15 Oct 2024, 09:48 | 7.3 | 7.3 |
| 2 Sep 2024, 13:46 | 7.71 | 7.71 |
| 7 Aug 2024, 11:26 | 7.57 | 7.57 |
| 12 Jul 2024, 12:13 | 7.53 | 7.53 |
| 7 Jun 2024, 12:10 | 7.75 | 7.75 |
| 26 Mar 2024, 12:15 | 7.21 | 7.21 |
| 16 Feb 2024, 11:37 | 7.24 | 7.24 |
| 8 Jan 2024, 14:14 | 7.28 | 7.28 |
| 8 Dec 2023, 12:33 | 7.11 | 7.11 |
| 3 Nov 2023, 10:29 | 7.15 | 7.15 |
| 20 Oct 2023, 13:39 | 7.31 | 7.31 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.061 mg/l
Sampled 9 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Mar 2026, 10:48 | 0.061 | 0.061 mg/l |
| 16 Feb 2026, 10:13 | 0.1 | 0.1 mg/l |
| 26 Jan 2026, 10:35 | 0.051 | 0.051 mg/l |
| 4 Dec 2025, 12:54 | 0.13 | 0.13 mg/l |
| 18 Nov 2025, 10:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Oct 2025, 11:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Apr 2025, 13:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Mar 2025, 12:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Feb 2025, 12:07 | 0.059 | 0.059 mg/l |
| 2 Jan 2025, 11:03 | 0.092 | 0.092 mg/l |
| 11 Dec 2024, 10:53 | 0.033 | 0.033 mg/l |
| 27 Nov 2024, 13:42 | 0.059 | 0.059 mg/l |
| 15 Oct 2024, 09:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Sep 2024, 13:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Aug 2024, 11:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Jul 2024, 12:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Jun 2024, 12:10 | 0.031 | 0.031 mg/l |
| 26 Mar 2024, 12:15 | 0.15 | 0.15 mg/l |
| 16 Feb 2024, 11:37 | 0.058 | 0.058 mg/l |
| 8 Jan 2024, 14:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Dec 2023, 12:33 | 0.042 | 0.042 mg/l |
| 3 Nov 2023, 10:29 | 0.031 | 0.031 mg/l |
| 20 Oct 2023, 13:39 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.58 mg/l
Sampled 9 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Mar 2026, 10:48 | 2.58 | 2.58 mg/l |
| 16 Feb 2026, 10:13 | 2.58 | 2.58 mg/l |
| 26 Jan 2026, 10:35 | 3.49 | 3.49 mg/l |
| 4 Dec 2025, 12:54 | 2.39 | 2.39 mg/l |
| 18 Nov 2025, 10:22 | 4.09 | 4.09 mg/l |
| 9 Oct 2025, 11:33 | 2.89 | 2.89 mg/l |
| 1 Apr 2025, 13:42 | 2 | 2 mg/l |
| 17 Mar 2025, 12:52 | 2.59 | 2.59 mg/l |
| 7 Feb 2025, 12:07 | 3.09 | 3.09 mg/l |
| 2 Jan 2025, 11:03 | 2.38 | 2.38 mg/l |
| 11 Dec 2024, 10:53 | 3.59 | 3.59 mg/l |
| 27 Nov 2024, 13:42 | 2.89 | 2.89 mg/l |
| 15 Oct 2024, 09:48 | 2.79 | 2.79 mg/l |
| 2 Sep 2024, 13:46 | 1.8 | 1.8 mg/l |
| 7 Aug 2024, 11:26 | 2.3 | 2.3 mg/l |
| 12 Jul 2024, 12:13 | 2.89 | 2.89 mg/l |
| 7 Jun 2024, 12:10 | 2.1 | 2.1 mg/l |
| 26 Mar 2024, 12:15 | 1.97 | 1.97 mg/l |
| 16 Feb 2024, 11:37 | 2.79 | 2.79 mg/l |
| 8 Jan 2024, 14:14 | 3.89 | 3.89 mg/l |
| 8 Dec 2023, 12:33 | 3.48 | 3.48 mg/l |
| 3 Nov 2023, 10:29 | 4.19 | 4.19 mg/l |
| 20 Oct 2023, 13:39 | 2.99 | 2.99 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.052 mg/l
Sampled 9 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Mar 2026, 10:48 | 0.052 | 0.052 mg/l |
| 16 Feb 2026, 10:13 | 0.05 | 0.05 mg/l |
| 26 Jan 2026, 10:35 | 0.033 | 0.033 mg/l |
| 4 Dec 2025, 12:54 | 0.066 | 0.066 mg/l |
| 18 Nov 2025, 10:22 | 0.026 | 0.026 mg/l |
| 9 Oct 2025, 11:33 | 0.031 | 0.031 mg/l |
| 1 Apr 2025, 13:42 | 0.04 | 0.04 mg/l |
| 17 Mar 2025, 12:52 | 0.037 | 0.037 mg/l |
| 7 Feb 2025, 12:07 | 0.033 | 0.033 mg/l |
| 2 Jan 2025, 11:03 | 0.054 | 0.054 mg/l |
| 11 Dec 2024, 10:53 | 0.024 | 0.024 mg/l |
| 27 Nov 2024, 13:42 | 0.061 | 0.061 mg/l |
| 15 Oct 2024, 09:48 | 0.054 | 0.054 mg/l |
| 2 Sep 2024, 13:46 | 0.072 | 0.072 mg/l |
| 7 Aug 2024, 11:26 | 0.07 | 0.07 mg/l |
| 12 Jul 2024, 12:13 | 0.067 | 0.067 mg/l |
| 7 Jun 2024, 12:10 | 0.054 | 0.054 mg/l |
| 26 Mar 2024, 12:15 | 0.055 | 0.055 mg/l |
| 16 Feb 2024, 11:37 | 0.047 | 0.047 mg/l |
| 8 Jan 2024, 14:14 | 0.025 | 0.025 mg/l |
| 8 Dec 2023, 12:33 | 0.045 | 0.045 mg/l |
| 3 Nov 2023, 10:29 | 0.036 | 0.036 mg/l |
| 20 Oct 2023, 13:39 | 0.06 | 0.06 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
162 µS/cm
Sampled 9 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Mar 2026, 10:48 | 162 | 162 µS/cm |
| 16 Feb 2026, 10:13 | 162 | 162 µS/cm |
| 26 Jan 2026, 10:35 | 159 | 159 µS/cm |
| 4 Dec 2025, 12:54 | 145 | 145 µS/cm |
| 18 Nov 2025, 10:22 | 180 | 180 µS/cm |
| 9 Oct 2025, 11:33 | 185 | 185 µS/cm |
| 1 Apr 2025, 13:42 | 187 | 187 µS/cm |
| 17 Mar 2025, 12:52 | 180 | 180 µS/cm |
| 7 Feb 2025, 12:07 | 168 | 168 µS/cm |
| 2 Jan 2025, 11:03 | 183 | 183 µS/cm |
| 11 Dec 2024, 10:53 | 174 | 174 µS/cm |
| 27 Nov 2024, 13:42 | 151 | 151 µS/cm |
| 15 Oct 2024, 09:48 | 165 | 165 µS/cm |
| 2 Sep 2024, 13:46 | 203 | 203 µS/cm |
| 7 Aug 2024, 11:26 | 199 | 199 µS/cm |
| 12 Jul 2024, 12:13 | 187 | 187 µS/cm |
| 7 Jun 2024, 12:10 | 198 | 198 µS/cm |
| 26 Mar 2024, 12:15 | 139 | 139 µS/cm |
| 16 Feb 2024, 11:37 | 150 | 150 µS/cm |
| 8 Jan 2024, 14:14 | 175 | 175 µS/cm |
| 8 Dec 2023, 12:33 | 171 | 171 µS/cm |
| 3 Nov 2023, 10:29 | 177 | 177 µS/cm |
| 20 Oct 2023, 13:39 | 180 | 180 µS/cm |
E. coli
confirmed, membrane filtration · code 2348 · per 100 ml
1500 per 100 ml
Sampled 8 Dec 2023, 2.8 years ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Dec 2023, 12:33 | 1500 | 1500 per 100 ml |
| 3 Nov 2023, 10:29 | 1300 | 1300 per 100 ml |
| 20 Oct 2023, 13:39 | 980 | 980 per 100 ml |
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 | 23 | Oct 2023 – Mar 2026 | 98% 9 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Oct 2023 – Mar 2026 | 11 mg/l 9 Mar 2026 |
| Temperature of Water 0076 | River water | 23 | Oct 2023 – Mar 2026 | 10 °C 9 Mar 2026 |
| pH 0061 | River water | 23 | Oct 2023 – Mar 2026 | 7.44 9 Mar 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 23 | Oct 2023 – Mar 2026 | 0.061 mg/l 9 Mar 2026 |
| Nitrate as N 0117 | River water | 23 | Oct 2023 – Mar 2026 | 2.58 mg/l 9 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 23 | Oct 2023 – Mar 2026 | 0.052 mg/l 9 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Oct 2023 – Mar 2026 | 162 µS/cm 9 Mar 2026 |
| Escherichia coli : Confirmed : MF 2348 | River water | 3 | Oct 2023 – Dec 2023 | 1500 per 100 ml 8 Dec 2023 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 23 | Oct 2023 – Mar 2026 | 35 mg/l 9 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 23 | Oct 2023 – Mar 2026 | 0.00031 mg/l 9 Mar 2026 |
| Enterococci: Intestinal: Confirmed: MF 3723 | River water | 3 | Oct 2023 – Dec 2023 | 340 colony forming units / 100ml 8 Dec 2023 |
| Enterococci: Intestinal: Presumptive: MF 3722 | River water | 3 | Oct 2023 – Dec 2023 | 380 colony forming units / 100ml 8 Dec 2023 |
| Nitrite as N 0118 | River water | 23 | Oct 2023 – Mar 2026 | 0.025 mg/l 9 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 23 | Oct 2023 – Mar 2026 | 2.6 mg/l 9 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.