River Tamar at Tamerton Bridge
EA name: RIVER TAMAR AT TAMERTON BRIDGE (also listed as “RIVER TAMAR AT TAMERTON BRIDGE BELOW NORTH TAMERTON STW”)
Environment Agency sampling point SW-91210131 · 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
- 6 Oct 2026, 12:3420 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 20 since 2 Oct 2023 Imported periods: 1 Oct 2023 – 26 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives) · results completed 9 Oct 2026
- Where
- National Grid 231822, 97405As published, to the nearest 1 m. Open in a map
- River, by its own name
- Tamar
- River, by the map
- River TamarPlaced on the river its name gives, 17 m from the line.
- Next gauge downstream
- Polson Bridge On the River Tamar · 17 km along the river
- Nearest gauge upstream
- Crowford Bridge On the River Tamar · 4.6 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (14 samples)
Planned investigation (local monitoring) (6 samples)
Results here were completed a median of 4 days after the sample was taken (2 to 16 days, 7 samples).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
92.8%
Sampled 6 Oct 2026, 20 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Oct 2026, 12:34 | 92.8 | 92.8% |
| 18 Sep 2026, 09:47 | 87.4 | 87.4% |
| 28 Aug 2026, 09:30 | 73.3 | 73.3% |
| 14 Jul 2026, 09:28 | 80.8 | 80.8% |
| 4 Jun 2026, 12:32 | 94.4 | 94.4% |
| 8 May 2026, 12:57 | 99.3 | 99.3% |
| 20 Apr 2026, 10:19 | 97.1 | 97.1% |
| 3 Dec 2024, 11:04 | 94.7 | 94.7% |
| 5 Nov 2024, 11:11 | 94.2 | 94.2% |
| 14 Oct 2024, 13:35 | 92 | 92% |
| 4 Sep 2024, 10:08 | 92.1 | 92.1% |
| 1 Aug 2024, 11:01 | 93.1 | 93.1% |
| 5 Jul 2024, 09:24 | 89.5 | 89.5% |
| 6 Jun 2024, 11:42 | 99.5 | 99.5% |
| 6 Mar 2024, 13:50 | 94.6 | 94.6% |
| 7 Feb 2024, 11:39 | 87.6 | 87.6% |
| 3 Jan 2024, 12:36 | 92.4 | 92.4% |
| 6 Dec 2023, 13:46 | 93.8 | 93.8% |
| 13 Nov 2023, 15:49 | 91.3 | 91.3% |
| 2 Oct 2023, 11:00 | 90.2 | 90.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.46 mg/l
Sampled 6 Oct 2026, 20 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Oct 2026, 12:34 | 9.46 | 9.46 mg/l |
| 18 Sep 2026, 09:47 | 8.81 | 8.81 mg/l |
| 28 Aug 2026, 09:30 | 7.1 | 7.1 mg/l |
| 14 Jul 2026, 09:28 | 7.29 | 7.29 mg/l |
| 4 Jun 2026, 12:32 | 9.43 | 9.43 mg/l |
| 8 May 2026, 12:57 | 10.2 | 10.2 mg/l |
| 20 Apr 2026, 10:19 | 10.9 | 10.9 mg/l |
| 3 Dec 2024, 11:04 | 11.2 | 11.2 mg/l |
| 5 Nov 2024, 11:11 | 10.3 | 10.3 mg/l |
| 14 Oct 2024, 13:35 | 9.92 | 9.92 mg/l |
| 4 Sep 2024, 10:08 | 9.05 | 9.05 mg/l |
| 1 Aug 2024, 11:01 | 8.6 | 8.6 mg/l |
| 5 Jul 2024, 09:24 | 8.92 | 8.92 mg/l |
| 6 Jun 2024, 11:42 | 10.1 | 10.1 mg/l |
| 6 Mar 2024, 13:50 | 11.4 | 11.4 mg/l |
| 7 Feb 2024, 11:39 | 9.92 | 9.92 mg/l |
| 3 Jan 2024, 12:36 | 10.6 | 10.6 mg/l |
| 6 Dec 2023, 13:46 | 11.5 | 11.5 mg/l |
| 13 Nov 2023, 15:49 | 9.91 | 9.91 mg/l |
| 2 Oct 2023, 11:00 | 8.96 | 8.96 mg/l |
Water temperature
code 0076 · °C
14.4 °C
Sampled 6 Oct 2026, 20 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Oct 2026, 12:34 | 14.4 | 14.4 °C |
| 18 Sep 2026, 09:47 | 14.9 | 14.9 °C |
| 28 Aug 2026, 09:30 | 16.8 | 16.8 °C |
| 14 Jul 2026, 09:28 | 20.3 | 20.3 °C |
| 4 Jun 2026, 12:32 | 15.3 | 15.3 °C |
| 8 May 2026, 12:57 | 14.1 | 14.1 °C |
| 20 Apr 2026, 10:19 | 10.1 | 10.1 °C |
| 3 Dec 2024, 11:04 | 8.1 | 8.1 °C |
| 5 Nov 2024, 11:11 | 11.4 | 11.4 °C |
| 14 Oct 2024, 13:35 | 11.9 | 11.9 °C |
| 4 Sep 2024, 10:08 | 16.1 | 16.1 °C |
| 1 Aug 2024, 11:01 | 19.1 | 19.1 °C |
| 5 Jul 2024, 09:24 | 15.4 | 15.4 °C |
| 6 Jun 2024, 11:42 | 14.7 | 14.7 °C |
| 6 Mar 2024, 13:50 | 7.3 | 7.3 °C |
| 7 Feb 2024, 11:39 | 9.8 | 9.8 °C |
| 3 Jan 2024, 12:36 | 9.2 | 9.2 °C |
| 6 Dec 2023, 13:46 | 6.5 | 6.5 °C |
| 13 Nov 2023, 15:49 | 11.6 | 11.6 °C |
| 2 Oct 2023, 11:00 | 15.6 | 15.6 °C |
pH
code 0061
7.65
Sampled 6 Oct 2026, 20 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Oct 2026, 12:34 | 7.65 | 7.65 |
| 18 Sep 2026, 09:47 | 7.47 | 7.47 |
| 28 Aug 2026, 09:30 | 7.3 | 7.3 |
| 14 Jul 2026, 09:28 | 7.58 | 7.58 |
| 4 Jun 2026, 12:32 | 7.53 | 7.53 |
| 8 May 2026, 12:57 | 7.63 | 7.63 |
| 20 Apr 2026, 10:19 | 7.63 | 7.63 |
| 3 Dec 2024, 11:04 | 7.24 | 7.24 |
| 5 Nov 2024, 11:11 | 7.5 | 7.5 |
| 14 Oct 2024, 13:35 | 7.24 | 7.24 |
| 4 Sep 2024, 10:08 | 7.81 | 7.81 |
| 1 Aug 2024, 11:01 | 7.74 | 7.74 |
| 5 Jul 2024, 09:24 | 7.62 | 7.62 |
| 6 Jun 2024, 11:42 | 7.92 | 7.92 |
| 6 Mar 2024, 13:50 | 7.28 | 7.28 |
| 7 Feb 2024, 11:39 | 7.25 | 7.25 |
| 3 Jan 2024, 12:36 | 7.24 | 7.24 |
| 6 Dec 2023, 13:46 | 7.13 | 7.13 |
| 13 Nov 2023, 15:49 | 7.25 | 7.25 |
| 2 Oct 2023, 11:00 | 7.43 | 7.43 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 6 Oct 2026, 20 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Oct 2026, 12:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Sep 2026, 09:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Aug 2026, 09:30 | 0.23 | 0.23 mg/l |
| 14 Jul 2026, 09:28 | 0.034 | 0.034 mg/l |
| 4 Jun 2026, 12:32 | 0.059 | 0.059 mg/l |
| 8 May 2026, 12:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Apr 2026, 10:19 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Dec 2024, 11:04 | 0.035 | 0.035 mg/l |
| 5 Nov 2024, 11:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Oct 2024, 13:35 | 0.04 | 0.04 mg/l |
| 4 Sep 2024, 10:08 | 0.033 | 0.033 mg/l |
| 1 Aug 2024, 11:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Jul 2024, 09:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Jun 2024, 11:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Mar 2024, 13:50 | 0.099 | 0.099 mg/l |
| 7 Feb 2024, 11:39 | 0.11 | 0.11 mg/l |
| 3 Jan 2024, 12:36 | 0.07 | 0.07 mg/l |
| 6 Dec 2023, 13:46 | 0.048 | 0.048 mg/l |
| 13 Nov 2023, 15:49 | 0.085 | 0.085 mg/l |
| 2 Oct 2023, 11:00 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.49 mg/l
Sampled 6 Oct 2026, 20 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Oct 2026, 12:34 | 1.49 | 1.49 mg/l |
| 18 Sep 2026, 09:47 | 1.59 | 1.59 mg/l |
| 28 Aug 2026, 09:30 | 1.94 | 1.94 mg/l |
| 14 Jul 2026, 09:28 | 0.474 | 0.474 mg/l |
| 4 Jun 2026, 12:32 | 0.931 | 0.931 mg/l |
| 8 May 2026, 12:57 | 1.09 | 1.09 mg/l |
| 20 Apr 2026, 10:19 | 0.995 | 0.995 mg/l |
| 3 Dec 2024, 11:04 | 2.19 | 2.19 mg/l |
| 5 Nov 2024, 11:11 | 1.9 | 1.9 mg/l |
| 14 Oct 2024, 13:35 | 1.49 | 1.49 mg/l |
| 4 Sep 2024, 10:08 | 0.516 | 0.516 mg/l |
| 1 Aug 2024, 11:01 | 1.3 | 1.3 mg/l |
| 5 Jul 2024, 09:24 | 0.566 | 0.566 mg/l |
| 6 Jun 2024, 11:42 | 1.29 | 1.29 mg/l |
| 6 Mar 2024, 13:50 | 2.08 | 2.08 mg/l |
| 7 Feb 2024, 11:39 | 1.09 | 1.09 mg/l |
| 3 Jan 2024, 12:36 | 1.68 | 1.68 mg/l |
| 6 Dec 2023, 13:46 | 2.79 | 2.79 mg/l |
| 13 Nov 2023, 15:49 | 1.39 | 1.39 mg/l |
| 2 Oct 2023, 11:00 | 1.49 | 1.49 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.059 mg/l
Sampled 6 Oct 2026, 20 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Oct 2026, 12:34 | 0.059 | 0.059 mg/l |
| 18 Sep 2026, 09:47 | 0.072 | 0.072 mg/l |
| 28 Aug 2026, 09:30 | 0.072 | 0.072 mg/l |
| 14 Jul 2026, 09:28 | 0.025 | 0.025 mg/l |
| 4 Jun 2026, 12:32 | 0.045 | 0.045 mg/l |
| 8 May 2026, 12:57 | 0.054 | 0.054 mg/l |
| 20 Apr 2026, 10:19 | 0.035 | 0.035 mg/l |
| 5 Nov 2024, 11:11 | 0.039 | 0.039 mg/l |
| 14 Oct 2024, 13:35 | 0.091 | 0.091 mg/l |
| 4 Sep 2024, 10:08 | 0.036 | 0.036 mg/l |
| 1 Aug 2024, 11:01 | 0.047 | 0.047 mg/l |
| 5 Jul 2024, 09:24 | 0.019 | 0.019 mg/l |
| 6 Jun 2024, 11:42 | 0.044 | 0.044 mg/l |
| 6 Mar 2024, 13:50 | 0.047 | 0.047 mg/l |
| 3 Jan 2024, 12:36 | 0.047 | 0.047 mg/l |
| 6 Dec 2023, 13:46 | 0.037 | 0.037 mg/l |
| 13 Nov 2023, 15:49 | 0.051 | 0.051 mg/l |
| 2 Oct 2023, 11:00 | 0.052 | 0.052 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
216 µS/cm
Sampled 6 Oct 2026, 20 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Oct 2026, 12:34 | 216 | 216 µS/cm |
| 18 Sep 2026, 09:47 | 240 | 240 µS/cm |
| 28 Aug 2026, 09:30 | 263 | 263 µS/cm |
| 14 Jul 2026, 09:28 | 249 | 249 µS/cm |
| 4 Jun 2026, 12:32 | 220 | 220 µS/cm |
| 8 May 2026, 12:57 | 215 | 215 µS/cm |
| 20 Apr 2026, 10:19 | 198 | 198 µS/cm |
| 3 Dec 2024, 11:04 | 174 | 174 µS/cm |
| 5 Nov 2024, 11:11 | 198 | 198 µS/cm |
| 14 Oct 2024, 13:35 | 174 | 174 µS/cm |
| 4 Sep 2024, 10:08 | 250 | 250 µS/cm |
| 1 Aug 2024, 11:01 | 212 | 212 µS/cm |
| 5 Jul 2024, 09:24 | 250 | 250 µS/cm |
| 6 Jun 2024, 11:42 | 235 | 235 µS/cm |
| 6 Mar 2024, 13:50 | 182 | 182 µS/cm |
| 7 Feb 2024, 11:39 | 135 | 135 µS/cm |
| 3 Jan 2024, 12:36 | 173 | 173 µS/cm |
| 6 Dec 2023, 13:46 | 195 | 195 µS/cm |
| 13 Nov 2023, 15:49 | 171 | 171 µS/cm |
| 2 Oct 2023, 11:00 | 216 | 216 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 | 20 | Oct 2023 – Oct 2026 | 92.8% 6 Oct 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 20 | Oct 2023 – Oct 2026 | 9.46 mg/l 6 Oct 2026 |
| Temperature of Water 0076 | River water | 20 | Oct 2023 – Oct 2026 | 14.4 °C 6 Oct 2026 |
| pH 0061 | River water | 20 | Oct 2023 – Oct 2026 | 7.65 6 Oct 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 20 | Oct 2023 – Oct 2026 | below 0.03 mg/l 6 Oct 2026 |
| Nitrate as N 0117 | River water | 20 | Oct 2023 – Oct 2026 | 1.49 mg/l 6 Oct 2026 |
| Orthophosphate, reactive as P 0180 | River water | 18 | Oct 2023 – Oct 2026 | 0.059 mg/l 6 Oct 2026 |
| Conductivity at 25 C 0077 | River water | 20 | Oct 2023 – Oct 2026 | 216 µS/cm 6 Oct 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 20 | Oct 2023 – Oct 2026 | 46 mg/l 6 Oct 2026 |
| Ammonia un-ionised as N 0119 | River water | 20 | Oct 2023 – Oct 2026 | below 0.00034 mg/l 6 Oct 2026 |
| Nitrite as N 0118 | River water | 20 | Oct 2023 – Oct 2026 | 0.011 mg/l 6 Oct 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 20 | Oct 2023 – Oct 2026 | 1.5 mg/l 6 Oct 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.