River Tiddy at Lambest
EA name: RIVER TIDDY AT LAMBEST (also listed as “RSN1275 RIVER TIDDY AT LAMBEST”)
Environment Agency sampling point SW-RSN1275 · 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
- 17 Dec 2024, 10:2622 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 8 Oct 2026 and had nothing newer.
- Samples banked
- 13 since 11 Jan 2024 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 231060, 63668As published, to the nearest 1 m. Open in a map
- River, by its own name
- Tiddy
- River, by the map
- River TiddyPlaced on the river its name gives, 6 m from the line.
- Next gauge downstream
- Tideford On the River Tiddy · 7.4 km along the river
- Why it was sampled
- Monitoring (national agency policy) (13 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
97.8%
Sampled 17 Dec 2024, 22 months ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2024, 10:26 | 97.8 | 97.8% |
| 3 Dec 2024, 10:48 | 96.5 | 96.5% |
| 11 Nov 2024, 11:57 | 100.8 | 100.8% |
| 21 Oct 2024, 09:50 | 97.4 | 97.4% |
| 18 Sep 2024, 15:10 | 98.1 | 98.1% |
| 27 Aug 2024, 14:05 | 99.2 | 99.2% |
| 8 Jul 2024, 13:06 | 97.3 | 97.3% |
| 5 Jun 2024, 10:37 | 98.3 | 98.3% |
| 1 May 2024, 09:35 | 100.7 | 100.7% |
| 5 Apr 2024, 14:39 | 97.9 | 97.9% |
| 1 Mar 2024, 11:41 | 98.6 | 98.6% |
| 1 Feb 2024, 16:07 | 97.4 | 97.4% |
| 11 Jan 2024, 13:24 | 98.4 | 98.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.9 mg/l
Sampled 17 Dec 2024, 22 months ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2024, 10:26 | 10.9 | 10.9 mg/l |
| 3 Dec 2024, 10:48 | 10.8 | 10.8 mg/l |
| 11 Nov 2024, 11:57 | 10.8 | 10.8 mg/l |
| 21 Oct 2024, 09:50 | 10.5 | 10.5 mg/l |
| 18 Sep 2024, 15:10 | 9.82 | 9.82 mg/l |
| 27 Aug 2024, 14:05 | 9.76 | 9.76 mg/l |
| 8 Jul 2024, 13:06 | 10.1 | 10.1 mg/l |
| 5 Jun 2024, 10:37 | 10.6 | 10.6 mg/l |
| 1 May 2024, 09:35 | 11.5 | 11.5 mg/l |
| 5 Apr 2024, 14:39 | 10.5 | 10.5 mg/l |
| 1 Mar 2024, 11:41 | 11.5 | 11.5 mg/l |
| 1 Feb 2024, 16:07 | 11.1 | 11.1 mg/l |
| 11 Jan 2024, 13:24 | 11.6 | 11.6 mg/l |
Water temperature
code 0076 · °C
10.5 °C
Sampled 17 Dec 2024, 22 months ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2024, 10:26 | 10.5 | 10.5 °C |
| 3 Dec 2024, 10:48 | 10.4 | 10.4 °C |
| 11 Nov 2024, 11:57 | 12.3 | 12.3 °C |
| 21 Oct 2024, 09:50 | 11.9 | 11.9 °C |
| 18 Sep 2024, 15:10 | 15.2 | 15.2 °C |
| 27 Aug 2024, 14:05 | 16 | 16 °C |
| 8 Jul 2024, 13:06 | 13.7 | 13.7 °C |
| 5 Jun 2024, 10:37 | 11.8 | 11.8 °C |
| 1 May 2024, 09:35 | 9.6 | 9.6 °C |
| 5 Apr 2024, 14:39 | 12.1 | 12.1 °C |
| 1 Mar 2024, 11:41 | 8.6 | 8.6 °C |
| 1 Feb 2024, 16:07 | 9.7 | 9.7 °C |
| 11 Jan 2024, 13:24 | 8.2 | 8.2 °C |
pH
code 0061
7.57
Sampled 17 Dec 2024, 22 months ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2024, 10:26 | 7.57 | 7.57 |
| 3 Dec 2024, 10:48 | 7.54 | 7.54 |
| 11 Nov 2024, 11:57 | 7.63 | 7.63 |
| 21 Oct 2024, 09:50 | 7.44 | 7.44 |
| 18 Sep 2024, 15:10 | 7.75 | 7.75 |
| 27 Aug 2024, 14:05 | 7.53 | 7.53 |
| 8 Jul 2024, 13:06 | 8.16 | 8.16 |
| 5 Jun 2024, 10:37 | 7.74 | 7.74 |
| 1 May 2024, 09:35 | 7.6 | 7.6 |
| 5 Apr 2024, 14:39 | 7.42 | 7.42 |
| 1 Mar 2024, 11:41 | 7.51 | 7.51 |
| 1 Feb 2024, 16:07 | 7.54 | 7.54 |
| 11 Jan 2024, 13:24 | 7.52 | 7.52 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.013 mg/l
Sampled 17 Dec 2024, 22 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2024, 10:26 | 0.013 | 0.013 mg/l |
| 11 Nov 2024, 11:57 | 0.004 | 0.004 mg/l |
| 21 Oct 2024, 09:50 | 0.014 | 0.014 mg/l |
| 18 Sep 2024, 15:10 | 0.0061 | 0.0061 mg/l |
| 27 Aug 2024, 14:05 | 0.0089 | 0.0089 mg/l |
| 8 Jul 2024, 13:06 | 0.0094 | 0.0094 mg/l |
| 5 Jun 2024, 10:37 | 0.0093 | 0.0093 mg/l |
| 1 May 2024, 09:35 | 0.066 | 0.066 mg/l |
| 5 Apr 2024, 14:39 | 0.064 | 0.064 mg/l |
| 1 Mar 2024, 11:41 | 0.11 | 0.11 mg/l |
| 1 Feb 2024, 16:07 | 0.019 | 0.019 mg/l |
| 11 Jan 2024, 13:24 | 0.03 | 0.03 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
4.19 mg/l
Sampled 17 Dec 2024, 22 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2024, 10:26 | 4.19 | 4.19 mg/l |
| 11 Nov 2024, 11:57 | 3.9 | 3.9 mg/l |
| 21 Oct 2024, 09:50 | 3.39 | 3.39 mg/l |
| 18 Sep 2024, 15:10 | 3.39 | 3.39 mg/l |
| 27 Aug 2024, 14:05 | 3.4 | 3.4 mg/l |
| 8 Jul 2024, 13:06 | 3.59 | 3.59 mg/l |
| 5 Jun 2024, 10:37 | 3.49 | 3.49 mg/l |
| 1 May 2024, 09:35 | 3.58 | 3.58 mg/l |
| 5 Apr 2024, 14:39 | 3.59 | 3.59 mg/l |
| 1 Mar 2024, 11:41 | 3.79 | 3.79 mg/l |
| 1 Feb 2024, 16:07 | 4.39 | 4.39 mg/l |
| 11 Jan 2024, 13:24 | 4.79 | 4.79 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.019 mg/l
Sampled 17 Dec 2024, 22 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2024, 10:26 | 0.019 | 0.019 mg/l |
| 11 Nov 2024, 11:57 | 0.019 | 0.019 mg/l |
| 21 Oct 2024, 09:50 | 0.017 | 0.017 mg/l |
| 18 Sep 2024, 15:10 | 0.018 | 0.018 mg/l |
| 27 Aug 2024, 14:05 | 0.019 | 0.019 mg/l |
| 8 Jul 2024, 13:06 | 0.022 | 0.022 mg/l |
| 5 Jun 2024, 10:37 | 0.02 | 0.02 mg/l |
| 1 May 2024, 09:35 | 0.028 | 0.028 mg/l |
| 5 Apr 2024, 14:39 | 0.025 | 0.025 mg/l |
| 1 Mar 2024, 11:41 | 0.03 | 0.03 mg/l |
| 1 Feb 2024, 16:07 | 0.021 | 0.021 mg/l |
| 11 Jan 2024, 13:24 | 0.02 | 0.02 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
226 µS/cm
Sampled 17 Dec 2024, 22 months ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2024, 10:26 | 226 | 226 µS/cm |
| 3 Dec 2024, 10:48 | 246 | 246 µS/cm |
| 11 Nov 2024, 11:57 | 229 | 229 µS/cm |
| 21 Oct 2024, 09:50 | 194 | 194 µS/cm |
| 18 Sep 2024, 15:10 | 239 | 239 µS/cm |
| 27 Aug 2024, 14:05 | 245 | 245 µS/cm |
| 8 Jul 2024, 13:06 | 360 | 360 µS/cm |
| 5 Jun 2024, 10:37 | 227 | 227 µS/cm |
| 1 May 2024, 09:35 | 214 | 214 µS/cm |
| 5 Apr 2024, 14:39 | 181 | 181 µS/cm |
| 1 Mar 2024, 11:41 | 199 | 199 µS/cm |
| 1 Feb 2024, 16:07 | 219 | 219 µS/cm |
| 11 Jan 2024, 13:24 | 214 | 214 µS/cm |
Everything measured here
17 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 17 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 13 | Jan 2024 – Dec 2024 | 97.8% 17 Dec 2024 |
| Oxygen, Dissolved as O2 9924 | River water | 13 | Jan 2024 – Dec 2024 | 10.9 mg/l 17 Dec 2024 |
| Temperature of Water 0076 | River water | 13 | Jan 2024 – Dec 2024 | 10.5 °C 17 Dec 2024 |
| pH 0061 | River water | 13 | Jan 2024 – Dec 2024 | 7.57 17 Dec 2024 |
| Ammoniacal Nitrogen as N 0111 | River water | 12 | Jan 2024 – Dec 2024 | 0.013 mg/l 17 Dec 2024 |
| Nitrate as N 0117 | River water | 12 | Jan 2024 – Dec 2024 | 4.19 mg/l 17 Dec 2024 |
| Orthophosphate, reactive as P 0180 | River water | 12 | Jan 2024 – Dec 2024 | 0.019 mg/l 17 Dec 2024 |
| Conductivity at 25 C 0077 | River water | 13 | Jan 2024 – Dec 2024 | 226 µS/cm 17 Dec 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 12 | Jan 2024 – Dec 2024 | 48 mg/l 17 Dec 2024 |
| Ammonia un-ionised as N 0119 | River water | 12 | Jan 2024 – Dec 2024 | 0.00009 mg/l 17 Dec 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 12 | Jan 2024 – Dec 2024 | 0.83 mg/l 17 Dec 2024 |
| Chloride 0172 | River water | 12 | Jan 2024 – Dec 2024 | 19 mg/l 17 Dec 2024 |
| Flow Type 2896 | River water | 6 | Jul 2024 – Dec 2024 | Moderate Flow 17 Dec 2024 |
| Nitrite as N 0118 | River water | 12 | Jan 2024 – Dec 2024 | 0.0063 mg/l 17 Dec 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 12 | Jan 2024 – Dec 2024 | 4.2 mg/l 17 Dec 2024 |
| Phosphorus, Total as P 0348 | River water | 12 | Jan 2024 – Dec 2024 | 0.027 mg/l 17 Dec 2024 |
| Silica, reactive as SiO2 0182 | River water | 12 | Jan 2024 – Dec 2024 | 6.5 mg/l 17 Dec 2024 |
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.