River Carey at Halwill Bridge Quoditch
EA name: RIVER CAREY AT HALWILL BRIDGE QUODITCH (also listed as “RIVER CAREY AT HALWILL BRIDGE - QUODITCH”)
Environment Agency sampling point SW-81281177 · 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
- 21 May 2026, 12:324 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
- 28 since 20 Jun 2024 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 242031, 98482As published, to the nearest 1 m. Open in a map
- River, by its own name
- Carey
- River, by the map
- River CareyPlaced on the river its name gives, 42 m from the line.
- Next gauge downstream
- Polson Bridge On the River Tamar · 21 km along the river
- Why it was sampled
- Monitoring (national agency policy) (28 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
102%
Sampled 21 May 2026, 4 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 12:32 | 102 | 102% |
| 5 May 2026, 14:33 | 98.3 | 98.3% |
| 17 Apr 2026, 11:28 | 99.3 | 99.3% |
| 19 Mar 2026, 13:25 | 94.4 | 94.4% |
| 2 Mar 2026, 12:16 | 94.1 | 94.1% |
| 19 Feb 2026, 10:52 | 98 | 98% |
| 3 Feb 2026, 14:11 | 98.5 | 98.5% |
| 30 Jan 2026, 12:45 | 98 | 98% |
| 13 Jan 2026, 11:15 | 98 | 98% |
| 15 Dec 2025, 10:34 | 96.2 | 96.2% |
| 2 Dec 2025, 12:54 | 97.5 | 97.5% |
| 28 Nov 2025, 11:15 | 94.5 | 94.5% |
| 12 Nov 2025, 10:33 | 94.1 | 94.1% |
| 2 Oct 2025, 12:09 | 94.6 | 94.6% |
| 4 Sep 2025, 11:39 | 92 | 92% |
| 18 Aug 2025, 11:41 | 72.3 | 72.3% |
| 21 Jul 2025, 10:22 | 87.4 | 87.4% |
| 9 Jun 2025, 11:18 | 93.7 | 93.7% |
| 27 May 2025, 11:14 | 90.1 | 90.1% |
| 16 Apr 2025, 11:08 | 94.9 | 94.9% |
| 21 Mar 2025, 13:05 | 101.2 | 101.2% |
| 5 Feb 2025, 10:45 | 98.5 | 98.5% |
| 20 Jan 2025, 12:51 | 98.1 | 98.1% |
| 11 Dec 2024, 13:39 | 98.4 | 98.4% |
| 22 Oct 2024, 11:24 | 95.9 | 95.9% |
| 27 Sep 2024, 13:26 | 95 | 95% |
| 17 Jul 2024, 13:40 | 97.3 | 97.3% |
| 20 Jun 2024, 11:23 | 92.9 | 92.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.6 mg/l
Sampled 21 May 2026, 4 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 12:32 | 10.6 | 10.6 mg/l |
| 5 May 2026, 14:33 | 10.5 | 10.5 mg/l |
| 17 Apr 2026, 11:28 | 10.9 | 10.9 mg/l |
| 19 Mar 2026, 13:25 | 10.9 | 10.9 mg/l |
| 2 Mar 2026, 12:16 | 10.8 | 10.8 mg/l |
| 19 Feb 2026, 10:52 | 12.2 | 12.2 mg/l |
| 3 Feb 2026, 14:11 | 11.8 | 11.8 mg/l |
| 30 Jan 2026, 12:45 | 11.9 | 11.9 mg/l |
| 13 Jan 2026, 11:15 | 11.6 | 11.6 mg/l |
| 15 Dec 2025, 10:34 | 11 | 11 mg/l |
| 2 Dec 2025, 12:54 | 11.4 | 11.4 mg/l |
| 28 Nov 2025, 11:15 | 10.9 | 10.9 mg/l |
| 12 Nov 2025, 10:33 | 10 | 10 mg/l |
| 2 Oct 2025, 12:09 | 10.2 | 10.2 mg/l |
| 4 Sep 2025, 11:39 | 9.44 | 9.44 mg/l |
| 18 Aug 2025, 11:41 | 7.13 | 7.13 mg/l |
| 21 Jul 2025, 10:22 | 9.08 | 9.08 mg/l |
| 9 Jun 2025, 11:18 | 10 | 10 mg/l |
| 27 May 2025, 11:14 | 9.54 | 9.54 mg/l |
| 16 Apr 2025, 11:08 | 11.4 | 11.4 mg/l |
| 21 Mar 2025, 13:05 | 11.4 | 11.4 mg/l |
| 5 Feb 2025, 10:45 | 12.5 | 12.5 mg/l |
| 20 Jan 2025, 12:51 | 12.2 | 12.2 mg/l |
| 11 Dec 2024, 13:39 | 12.1 | 12.1 mg/l |
| 22 Oct 2024, 11:24 | 10.5 | 10.5 mg/l |
| 27 Sep 2024, 13:26 | 10.2 | 10.2 mg/l |
| 17 Jul 2024, 13:40 | 9.98 | 9.98 mg/l |
| 20 Jun 2024, 11:23 | 9.61 | 9.61 mg/l |
Water temperature
code 0076 · °C
13.4 °C
Sampled 21 May 2026, 4 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 12:32 | 13.4 | 13.4 °C |
| 5 May 2026, 14:33 | 12.3 | 12.3 °C |
| 17 Apr 2026, 11:28 | 11 | 11 °C |
| 19 Mar 2026, 13:25 | 9 | 9 °C |
| 2 Mar 2026, 12:16 | 9.3 | 9.3 °C |
| 19 Feb 2026, 10:52 | 6.1 | 6.1 °C |
| 3 Feb 2026, 14:11 | 7.6 | 7.6 °C |
| 30 Jan 2026, 12:45 | 6.9 | 6.9 °C |
| 13 Jan 2026, 11:15 | 7.8 | 7.8 °C |
| 15 Dec 2025, 10:34 | 9.3 | 9.3 °C |
| 2 Dec 2025, 12:54 | 8.5 | 8.5 °C |
| 28 Nov 2025, 11:15 | 8.9 | 8.9 °C |
| 12 Nov 2025, 10:33 | 12.3 | 12.3 °C |
| 2 Oct 2025, 12:09 | 12 | 12 °C |
| 4 Sep 2025, 11:39 | 14.1 | 14.1 °C |
| 18 Aug 2025, 11:41 | 15.9 | 15.9 °C |
| 21 Jul 2025, 10:22 | 13.5 | 13.5 °C |
| 9 Jun 2025, 11:18 | 12.2 | 12.2 °C |
| 27 May 2025, 11:14 | 12.7 | 12.7 °C |
| 16 Apr 2025, 11:08 | 7.5 | 7.5 °C |
| 21 Mar 2025, 13:05 | 10.1 | 10.1 °C |
| 5 Feb 2025, 10:45 | 5.1 | 5.1 °C |
| 20 Jan 2025, 12:51 | 6.1 | 6.1 °C |
| 11 Dec 2024, 13:39 | 6.3 | 6.3 °C |
| 22 Oct 2024, 11:24 | 11.2 | 11.2 °C |
| 27 Sep 2024, 13:26 | 11.9 | 11.9 °C |
| 17 Jul 2024, 13:40 | 14.1 | 14.1 °C |
| 20 Jun 2024, 11:23 | 13.7 | 13.7 °C |
pH
code 0061
7.38
Sampled 21 May 2026, 4 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 12:32 | 7.38 | 7.38 |
| 5 May 2026, 14:33 | 7.36 | 7.36 |
| 17 Apr 2026, 11:28 | 7.46 | 7.46 |
| 19 Mar 2026, 13:25 | 7.36 | 7.36 |
| 2 Mar 2026, 12:16 | 7.36 | 7.36 |
| 19 Feb 2026, 10:52 | 7.3 | 7.3 |
| 3 Feb 2026, 14:11 | 7.38 | 7.38 |
| 30 Jan 2026, 12:45 | 7.52 | 7.52 |
| 13 Jan 2026, 11:15 | 7.33 | 7.33 |
| 15 Dec 2025, 10:34 | 7.17 | 7.17 |
| 2 Dec 2025, 12:54 | 7.27 | 7.27 |
| 28 Nov 2025, 11:15 | 7.22 | 7.22 |
| 12 Nov 2025, 10:33 | 6.64 | 6.64 |
| 2 Oct 2025, 12:09 | 7.59 | 7.59 |
| 4 Sep 2025, 11:39 | 7.39 | 7.39 |
| 18 Aug 2025, 11:41 | 7.52 | 7.52 |
| 21 Jul 2025, 10:22 | 7.88 | 7.88 |
| 9 Jun 2025, 11:18 | 7.35 | 7.35 |
| 27 May 2025, 11:14 | 7.56 | 7.56 |
| 16 Apr 2025, 11:08 | 6.61 | 6.61 |
| 21 Mar 2025, 13:05 | 7.61 | 7.61 |
| 5 Feb 2025, 10:45 | 7.39 | 7.39 |
| 20 Jan 2025, 12:51 | 7.28 | 7.28 |
| 11 Dec 2024, 13:39 | 7.27 | 7.27 |
| 22 Oct 2024, 11:24 | 7.23 | 7.23 |
| 27 Sep 2024, 13:26 | 7.08 | 7.08 |
| 17 Jul 2024, 13:40 | 7.31 | 7.31 |
| 20 Jun 2024, 11:23 | 7.63 | 7.63 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 21 May 2026, 4 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 12:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 May 2026, 14:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Apr 2026, 11:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Mar 2026, 13:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Mar 2026, 12:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Feb 2026, 10:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Feb 2026, 14:11 | 0.044 | 0.044 mg/l |
| 30 Jan 2026, 12:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Jan 2026, 11:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Dec 2025, 10:34 | 0.15 | 0.15 mg/l |
| 2 Dec 2025, 12:54 | 0.042 | 0.042 mg/l |
| 28 Nov 2025, 11:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Nov 2025, 10:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Oct 2025, 12:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Sep 2025, 11:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Aug 2025, 11:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Jul 2025, 10:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Jun 2025, 11:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 May 2025, 11:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Apr 2025, 11:08 | 0.035 | 0.035 mg/l |
| 21 Mar 2025, 13:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Feb 2025, 10:45 | 0.064 | 0.064 mg/l |
| 20 Jan 2025, 12:51 | 0.052 | 0.052 mg/l |
| 11 Dec 2024, 13:39 | 0.061 | 0.061 mg/l |
| 22 Oct 2024, 11:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Sep 2024, 13:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jul 2024, 13:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jun 2024, 11:23 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.356 mg/l
Sampled 21 May 2026, 4 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 12:32 | 0.356 | 0.356 mg/l |
| 5 May 2026, 14:33 | 0.486 | 0.486 mg/l |
| 17 Apr 2026, 11:28 | 0.456 | 0.456 mg/l |
| 19 Mar 2026, 13:25 | 0.616 | 0.616 mg/l |
| 2 Mar 2026, 12:16 | 0.476 | 0.476 mg/l |
| 19 Feb 2026, 10:52 | 0.466 | 0.466 mg/l |
| 3 Feb 2026, 14:11 | 0.736 | 0.736 mg/l |
| 30 Jan 2026, 12:45 | 0.566 | 0.566 mg/l |
| 13 Jan 2026, 11:15 | 0.556 | 0.556 mg/l |
| 15 Dec 2025, 10:34 | 0.396 | 0.396 mg/l |
| 2 Dec 2025, 12:54 | 0.626 | 0.626 mg/l |
| 28 Nov 2025, 11:15 | 0.606 | 0.606 mg/l |
| 12 Nov 2025, 10:33 | 0.486 | 0.486 mg/l |
| 2 Oct 2025, 12:09 | 0.816 | 0.816 mg/l |
| 4 Sep 2025, 11:39 | 0.946 | 0.946 mg/l |
| 18 Aug 2025, 11:41 | 0.386 | 0.386 mg/l |
| 21 Jul 2025, 10:22 | 0.616 | 0.616 mg/l |
| 9 Jun 2025, 11:18 | 0.596 | 0.596 mg/l |
| 27 May 2025, 11:14 | 0.646 | 0.646 mg/l |
| 16 Apr 2025, 11:08 | 0.816 | 0.816 mg/l |
| 21 Mar 2025, 13:05 | 0.886 | 0.886 mg/l |
| 5 Feb 2025, 10:45 | 0.956 | 0.956 mg/l |
| 20 Jan 2025, 12:51 | 0.956 | 0.956 mg/l |
| 11 Dec 2024, 13:39 | 1.3 | 1.3 mg/l |
| 22 Oct 2024, 11:24 | 0.955 | 0.955 mg/l |
| 27 Sep 2024, 13:26 | 0.276 | 0.276 mg/l |
| 17 Jul 2024, 13:40 | 0.436 | 0.436 mg/l |
| 20 Jun 2024, 11:23 | 0.986 | 0.986 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.021 mg/l
Sampled 21 May 2026, 4 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 12:32 | 0.021 | 0.021 mg/l |
| 5 May 2026, 14:33 | 0.015 | 0.015 mg/l |
| 17 Apr 2026, 11:28 | 0.02 | 0.02 mg/l |
| 19 Mar 2026, 13:25 | 0.028 | 0.028 mg/l |
| 2 Mar 2026, 12:16 | 0.027 | 0.027 mg/l |
| 19 Feb 2026, 10:52 | 0.022 | 0.022 mg/l |
| 3 Feb 2026, 14:11 | 0.015 | 0.015 mg/l |
| 30 Jan 2026, 12:45 | 0.014 | 0.014 mg/l |
| 13 Jan 2026, 11:15 | 0.016 | 0.016 mg/l |
| 15 Dec 2025, 10:34 | 0.11 | 0.11 mg/l |
| 2 Dec 2025, 12:54 | 0.022 | 0.022 mg/l |
| 28 Nov 2025, 11:15 | 0.026 | 0.026 mg/l |
| 12 Nov 2025, 10:33 | 0.015 | 0.015 mg/l |
| 2 Oct 2025, 12:09 | 0.011 | 0.011 mg/l |
| 4 Sep 2025, 11:39 | 0.013 | 0.013 mg/l |
| 18 Aug 2025, 11:41 | <0.01 | below 0.01 mg/l (not detected above this) |
| 21 Jul 2025, 10:22 | 0.012 | 0.012 mg/l |
| 9 Jun 2025, 11:18 | 0.018 | 0.018 mg/l |
| 27 May 2025, 11:14 | 0.011 | 0.011 mg/l |
| 16 Apr 2025, 11:08 | 0.014 | 0.014 mg/l |
| 21 Mar 2025, 13:05 | <0.01 | below 0.01 mg/l (not detected above this) |
| 5 Feb 2025, 10:45 | 0.015 | 0.015 mg/l |
| 20 Jan 2025, 12:51 | <0.01 | below 0.01 mg/l (not detected above this) |
| 11 Dec 2024, 13:39 | <0.01 | below 0.01 mg/l (not detected above this) |
| 22 Oct 2024, 11:24 | 0.014 | 0.014 mg/l |
| 27 Sep 2024, 13:26 | 0.035 | 0.035 mg/l |
| 17 Jul 2024, 13:40 | 0.021 | 0.021 mg/l |
| 20 Jun 2024, 11:23 | 0.014 | 0.014 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
167 µS/cm
Sampled 21 May 2026, 4 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 12:32 | 167 | 167 µS/cm |
| 5 May 2026, 14:33 | 155 | 155 µS/cm |
| 17 Apr 2026, 11:28 | 168 | 168 µS/cm |
| 19 Mar 2026, 13:25 | 154 | 154 µS/cm |
| 2 Mar 2026, 12:16 | 138 | 138 µS/cm |
| 19 Feb 2026, 10:52 | 124 | 124 µS/cm |
| 3 Feb 2026, 14:11 | 149 | 149 µS/cm |
| 30 Jan 2026, 12:45 | 128 | 128 µS/cm |
| 13 Jan 2026, 11:15 | 162 | 162 µS/cm |
| 15 Dec 2025, 10:34 | 120 | 120 µS/cm |
| 2 Dec 2025, 12:54 | 156 | 156 µS/cm |
| 28 Nov 2025, 11:15 | 160 | 160 µS/cm |
| 12 Nov 2025, 10:33 | 131 | 131 µS/cm |
| 2 Oct 2025, 12:09 | 204 | 204 µS/cm |
| 4 Sep 2025, 11:39 | 194 | 194 µS/cm |
| 18 Aug 2025, 11:41 | 263 | 263 µS/cm |
| 21 Jul 2025, 10:22 | 244 | 244 µS/cm |
| 9 Jun 2025, 11:18 | 161 | 161 µS/cm |
| 27 May 2025, 11:14 | 212 | 212 µS/cm |
| 16 Apr 2025, 11:08 | 106 | 106 µS/cm |
| 21 Mar 2025, 13:05 | 186 | 186 µS/cm |
| 5 Feb 2025, 10:45 | 171 | 171 µS/cm |
| 20 Jan 2025, 12:51 | 174 | 174 µS/cm |
| 11 Dec 2024, 13:39 | 170 | 170 µS/cm |
| 22 Oct 2024, 11:24 | 157 | 157 µS/cm |
| 27 Sep 2024, 13:26 | 136 | 136 µS/cm |
| 17 Jul 2024, 13:40 | 140 | 140 µS/cm |
| 20 Jun 2024, 11:23 | 196 | 196 µS/cm |
Everything measured here
13 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 13 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 28 | Jun 2024 – May 2026 | 102% 21 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 28 | Jun 2024 – May 2026 | 10.6 mg/l 21 May 2026 |
| Temperature of Water 0076 | River water | 28 | Jun 2024 – May 2026 | 13.4 °C 21 May 2026 |
| pH 0061 | River water | 28 | Jun 2024 – May 2026 | 7.38 21 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 28 | Jun 2024 – May 2026 | below 0.03 mg/l 21 May 2026 |
| Nitrate as N 0117 | River water | 28 | Jun 2024 – May 2026 | 0.356 mg/l 21 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 28 | Jun 2024 – May 2026 | 0.021 mg/l 21 May 2026 |
| Conductivity at 25 C 0077 | River water | 28 | Jun 2024 – May 2026 | 167 µS/cm 21 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 28 | Jun 2024 – May 2026 | 43 mg/l 21 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 28 | Jun 2024 – May 2026 | below 0.00017 mg/l 21 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 26 | Jun 2024 – May 2026 | 1.2 mg/l 21 May 2026 |
| Nitrite as N 0118 | River water | 28 | Jun 2024 – May 2026 | below 0.004 mg/l 21 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 28 | Jun 2024 – May 2026 | 0.36 mg/l 21 May 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.