River Burn Prior to Tavy
EA name: RIVER BURN PRIOR TO TAVY (also listed as “RIVER BURN PRIOR TO RIVER TAVY”)
Environment Agency sampling point SW-81232403 · 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 Jul 2026, 11:003 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 12 since 1 Aug 2025 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 249802, 76175As published, to the nearest 1 m. Open in a map
- River, by its own name
- Burn
- River, by the map
- River BurnPlaced on the river its name gives, 3 m from the line.
- Next gauge downstream
- Tavistock On the River Tavy · 2.5 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (11 samples)
Monitoring (national agency policy) (1 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
98.1%
Sampled 6 Jul 2026, 3 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Jul 2026, 11:00 | 98.1 | 98.1% |
| 2 Jun 2026, 11:00 | 99.7 | 99.7% |
| 8 May 2026, 11:35 | 104.2 | 104.2% |
| 1 Apr 2026, 11:00 | 102.9 | 102.9% |
| 9 Mar 2026, 10:45 | 99.4 | 99.4% |
| 16 Feb 2026, 10:25 | 98.5 | 98.5% |
| 16 Jan 2026, 10:35 | 101.2 | 101.2% |
| 15 Dec 2025, 11:10 | 101.4 | 101.4% |
| 14 Nov 2025, 11:25 | 99.1 | 99.1% |
| 14 Oct 2025, 11:00 | 97.4 | 97.4% |
| 11 Sep 2025, 10:20 | 96.2 | 96.2% |
| 1 Aug 2025, 10:55 | 97.9 | 97.9% |
Water temperature
code 0076 · °C
14.6 °C
Sampled 6 Jul 2026, 3 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Jul 2026, 11:00 | 14.6 | 14.6 °C |
| 2 Jun 2026, 11:00 | 13.8 | 13.8 °C |
| 8 May 2026, 11:35 | 11.7 | 11.7 °C |
| 1 Apr 2026, 11:00 | 10.3 | 10.3 °C |
| 9 Mar 2026, 10:45 | 10.3 | 10.3 °C |
| 16 Feb 2026, 10:25 | 8.7 | 8.7 °C |
| 16 Jan 2026, 10:35 | 8.2 | 8.2 °C |
| 15 Dec 2025, 11:10 | 10.1 | 10.1 °C |
| 14 Nov 2025, 11:25 | 12.7 | 12.7 °C |
| 14 Oct 2025, 11:00 | 12.5 | 12.5 °C |
| 11 Sep 2025, 10:20 | 12.9 | 12.9 °C |
| 1 Aug 2025, 10:55 | 14.6 | 14.6 °C |
pH
code 0061
7.5
Sampled 6 Jul 2026, 3 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Jul 2026, 11:00 | 7.5 | 7.5 |
| 2 Jun 2026, 11:00 | 7.5 | 7.5 |
| 8 May 2026, 11:35 | 7.6 | 7.6 |
| 1 Apr 2026, 11:00 | 7.6 | 7.6 |
| 9 Mar 2026, 10:45 | 7.4 | 7.4 |
| 16 Feb 2026, 10:25 | 7.3 | 7.3 |
| 16 Jan 2026, 10:35 | 6.96 | 6.96 |
| 15 Dec 2025, 11:10 | 7 | 7 |
| 14 Nov 2025, 11:25 | 6.84 | 6.84 |
| 14 Oct 2025, 11:00 | 7.5 | 7.5 |
| 11 Sep 2025, 10:20 | 7.4 | 7.4 |
| 1 Aug 2025, 10:55 | 7.63 | 7.63 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 6 Jul 2026, 3 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Jul 2026, 11:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jun 2026, 11:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 May 2026, 11:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Apr 2026, 11:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Mar 2026, 10:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Feb 2026, 10:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jan 2026, 10:35 | <0.03 | below 0.03 mg/l (not detected above this) |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.018 mg/l
Sampled 6 Jul 2026, 3 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Jul 2026, 11:00 | 0.018 | 0.018 mg/l |
| 2 Jun 2026, 11:00 | 0.019 | 0.019 mg/l |
| 8 May 2026, 11:35 | <0.01 | below 0.01 mg/l (not detected above this) |
| 1 Apr 2026, 11:00 | 0.012 | 0.012 mg/l |
| 9 Mar 2026, 10:45 | 0.012 | 0.012 mg/l |
| 16 Feb 2026, 10:25 | 0.015 | 0.015 mg/l |
| 16 Jan 2026, 10:35 | 0.018 | 0.018 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
139 µS/cm
Sampled 6 Jul 2026, 3 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Jul 2026, 11:00 | 139 | 139 µS/cm |
| 2 Jun 2026, 11:00 | 114 | 114 µS/cm |
| 1 Apr 2026, 11:00 | 124 | 124 µS/cm |
| 9 Mar 2026, 10:45 | 113 | 113 µS/cm |
| 16 Feb 2026, 10:25 | 103 | 103 µS/cm |
| 16 Jan 2026, 10:35 | 106 | 106 µS/cm |
| 15 Dec 2025, 11:10 | 79 | 79 µS/cm |
| 14 Nov 2025, 11:25 | 105 | 105 µS/cm |
| 14 Oct 2025, 11:00 | 123 | 123 µS/cm |
| 11 Sep 2025, 10:20 | 132 | 132 µS/cm |
| 1 Aug 2025, 10:55 | 149 | 149 µS/cm |
Everything measured here
59 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 59 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 12 | Aug 2025 – Jul 2026 | 98.1% 6 Jul 2026 |
| Temperature of Water 0076 | River water | 12 | Aug 2025 – Jul 2026 | 14.6 °C 6 Jul 2026 |
| pH 0061 | River water | 12 | Aug 2025 – Jul 2026 | 7.5 6 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 7 | Jan 2026 – Jul 2026 | below 0.03 mg/l 6 Jul 2026 |
| Orthophosphate, reactive as P 0180 | River water | 7 | Jan 2026 – Jul 2026 | 0.018 mg/l 6 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 11 | Aug 2025 – Jul 2026 | 139 µS/cm 6 Jul 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 7 | Jan 2026 – Jul 2026 | 31 mg/l 6 Jul 2026 |
| Aluminium 6057 | River water | 1 | Aug 2025 – Aug 2025 | below 20 µg/l 1 Aug 2025 |
| Aluminium, Dissolved 6037 | River water | 1 | Aug 2025 – Aug 2025 | below 20 µg/l 1 Aug 2025 |
| Arsenic 6046 | River water | 1 | Aug 2025 – Aug 2025 | 1.8 µg/l 1 Aug 2025 |
| Arsenic, Dissolved 6045 | River water | 1 | Aug 2025 – Aug 2025 | 1.7 µg/l 1 Aug 2025 |
| Barium 6062 | River water | 8 | Aug 2025 – Jul 2026 | below 10 µg/l 6 Jul 2026 |
| Barium, Dissolved 9446 | River water | 12 | Aug 2025 – Jul 2026 | below 10 µg/l 6 Jul 2026 |
| Boron 6059 | River water | 8 | Aug 2025 – Jul 2026 | below 100 µg/l 6 Jul 2026 |
| Boron, Dissolved 9447 | River water | 12 | Aug 2025 – Jul 2026 | below 100 µg/l 6 Jul 2026 |
| Cadmium 0108 | River water | 12 | Aug 2025 – Jul 2026 | 0.062 µg/l 6 Jul 2026 |
| Cadmium, Dissolved 0106 | River water | 12 | Aug 2025 – Jul 2026 | 0.051 µg/l 6 Jul 2026 |
| Calcium 0241 | River water | 8 | Aug 2025 – Jul 2026 | 11 mg/l 6 Jul 2026 |
| Calcium, Dissolved 0239 | River water | 12 | Aug 2025 – Jul 2026 | 11 mg/l 6 Jul 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 12 | Aug 2025 – Jul 2026 | 0.97 mg/l 6 Jul 2026 |
| Chloride 0172 | River water | 7 | Jan 2026 – Jul 2026 | 13 mg/l 6 Jul 2026 |
| Chromium 3164 | River water | 8 | Aug 2025 – Jul 2026 | below 0.5 µg/l 6 Jul 2026 |
| Chromium, Dissolved 3409 | River water | 8 | Aug 2025 – Jul 2026 | below 0.5 µg/l 6 Jul 2026 |
| Copper 6452 | River water | 12 | Aug 2025 – Jul 2026 | 2.3 µg/l 6 Jul 2026 |
| Copper : BLM Bioavailable 4821 | River water | 7 | Jan 2026 – Jul 2026 | 0.55 µg/l 6 Jul 2026 |
| Copper, Dissolved 6450 | River water | 12 | Aug 2025 – Jul 2026 | 2.1 µg/l 6 Jul 2026 |
| Hardness, Total as CaCO3 0158 | River water | 12 | Aug 2025 – Jul 2026 | 43.9 mg/l 6 Jul 2026 |
| Ionic Balance 7044 | River water | 7 | Jan 2026 – Jul 2026 | -2.16% 6 Jul 2026 |
| Iron 6051 | River water | 8 | Aug 2025 – Jul 2026 | 100 µg/l 6 Jul 2026 |
| Iron, Dissolved 6460 | River water | 12 | Aug 2025 – Jul 2026 | 66 µg/l 6 Jul 2026 |
| Lead 0050 | River water | 11 | Sep 2025 – Jul 2026 | 0.1 µg/l 6 Jul 2026 |
| Lead : BLM Bioavailable 3377 | River water | 7 | Jan 2026 – Jul 2026 | 0.05 µg/l 6 Jul 2026 |
| Lead, Dissolved 0052 | River water | 12 | Aug 2025 – Jul 2026 | below 0.1 µg/l 6 Jul 2026 |
| Lithium 6064 | River water | 8 | Aug 2025 – Jul 2026 | below 100 µg/l 6 Jul 2026 |
| Lithium, Dissolved 4201 | River water | 12 | Aug 2025 – Jul 2026 | below 100 µg/l 6 Jul 2026 |
| Magnesium 0237 | River water | 8 | Aug 2025 – Jul 2026 | 3.9 mg/l 6 Jul 2026 |
| Magnesium, Dissolved 0235 | River water | 12 | Aug 2025 – Jul 2026 | 4 mg/l 6 Jul 2026 |
| Manganese 6050 | River water | 8 | Aug 2025 – Jul 2026 | below 10 µg/l 6 Jul 2026 |
| Manganese : BLM Bioavailable 4820 | River water | 7 | Jan 2026 – Jul 2026 | 1.7 µg/l 6 Jul 2026 |
| Manganese, Dissolved 6458 | River water | 12 | Aug 2025 – Jul 2026 | below 10 µg/l 6 Jul 2026 |
| Nickel 6462 | River water | 11 | Sep 2025 – Jul 2026 | 3.1 µg/l 6 Jul 2026 |
| Nickel : BLM Bioavailable 3878 | River water | 7 | Jan 2026 – Jul 2026 | 2.3 µg/l 6 Jul 2026 |
| Nickel, Dissolved 3410 | River water | 12 | Aug 2025 – Jul 2026 | 2.9 µg/l 6 Jul 2026 |
| Nitrite as N 0118 | River water | 7 | Jan 2026 – Jul 2026 | below 0.004 mg/l 6 Jul 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 7 | Jan 2026 – Jul 2026 | 1.1 mg/l 6 Jul 2026 |
| pH : In Situ 3169 | River water | 1 | Dec 2025 – Dec 2025 | 6.86 15 Dec 2025 |
| Potassium 0211 | River water | 8 | Aug 2025 – Jul 2026 | 1.1 mg/l 6 Jul 2026 |
| Potassium, Dissolved 0209 | River water | 12 | Aug 2025 – Jul 2026 | 1.2 mg/l 6 Jul 2026 |
| Silica, reactive as SiO2 0182 | River water | 7 | Jan 2026 – Jul 2026 | 7.7 mg/l 6 Jul 2026 |
| Sodium 0207 | River water | 8 | Aug 2025 – Jul 2026 | 8.3 mg/l 6 Jul 2026 |
| Sodium, Dissolved 0205 | River water | 12 | Aug 2025 – Jul 2026 | 8.5 mg/l 6 Jul 2026 |
| Solids, Suspended at 105 C 0135 | River water | 12 | Aug 2025 – Jul 2026 | below 3 mg/l 6 Jul 2026 |
| Strontium 6063 | River water | 8 | Aug 2025 – Jul 2026 | 34 µg/l 6 Jul 2026 |
| Strontium, Filtered 6693 | River water | 12 | Aug 2025 – Jul 2026 | 35 µg/l 6 Jul 2026 |
| Sulphate as SO4 0183 | River water | 8 | Aug 2025 – Jul 2026 | 12 mg/l 6 Jul 2026 |
| Sulphate, Dissolved as SO4 7859 | River water | 12 | Aug 2025 – Jul 2026 | 12 mg/l 6 Jul 2026 |
| Zinc 6455 | River water | 12 | Aug 2025 – Jul 2026 | 17 µg/l 6 Jul 2026 |
| Zinc : BLM Bioavailable 4822 | River water | 7 | Jan 2026 – Jul 2026 | 15 µg/l 6 Jul 2026 |
| Zinc, Dissolved 3408 | River water | 12 | Aug 2025 – Jul 2026 | 15 µg/l 6 Jul 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.