Culm at Langlands
EA name: CULM AT LANGLANDS (also listed as “RSN0263 CULM AT LANGLANDS”)
Environment Agency sampling point SW-RSN0263 · 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
- 3 Dec 2024, 13:4423 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 26 Oct 2026 and had nothing newer.
- Samples banked
- 15 since 23 Oct 2023 Imported periods: 1 Oct 2023 – 26 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 305497, 111643As published, to the nearest 1 m. Open in a map
- River, by its own name
- Culm
- River, by the map
- River CulmPlaced on the river its name gives, 7 m from the line.
- Next gauge downstream
- Woodmill On the River Culm · 8.3 km along the river
- Nearest gauge upstream
- Culmstock On the River Culm · 6.5 km along the river
- Why it was sampled
- Monitoring (national agency policy) (15 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
97.4%
Sampled 3 Dec 2024, 23 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 13:44 | 97.4 | 97.4% |
| 7 Nov 2024, 11:14 | 97.6 | 97.6% |
| 16 Oct 2024, 12:22 | 95.8 | 95.8% |
| 3 Sep 2024, 11:33 | 94.3 | 94.3% |
| 29 Aug 2024, 14:00 | 102.7 | 102.7% |
| 9 Jul 2024, 12:46 | 94.8 | 94.8% |
| 10 Jun 2024, 11:50 | 102.3 | 102.3% |
| 9 May 2024, 15:30 | 105 | 105% |
| 25 Apr 2024, 08:47 | 94 | 94% |
| 6 Mar 2024, 11:10 | 97 | 97% |
| 1 Feb 2024, 10:37 | 96 | 96% |
| 9 Jan 2024, 13:25 | 98.5 | 98.5% |
| 11 Dec 2023, 12:54 | 98.3 | 98.3% |
| 24 Nov 2023, 13:53 | 97.9 | 97.9% |
| 23 Oct 2023, 11:34 | 95.4 | 95.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.5 mg/l
Sampled 3 Dec 2024, 23 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 13:44 | 11.5 | 11.5 mg/l |
| 7 Nov 2024, 11:14 | 10.3 | 10.3 mg/l |
| 16 Oct 2024, 12:22 | 9.87 | 9.87 mg/l |
| 3 Sep 2024, 11:33 | 9.28 | 9.28 mg/l |
| 29 Aug 2024, 14:00 | 10.1 | 10.1 mg/l |
| 9 Jul 2024, 12:46 | 9.55 | 9.55 mg/l |
| 10 Jun 2024, 11:50 | 10.6 | 10.6 mg/l |
| 9 May 2024, 15:30 | 10.4 | 10.4 mg/l |
| 25 Apr 2024, 08:47 | 11 | 11 mg/l |
| 6 Mar 2024, 11:10 | 12.1 | 12.1 mg/l |
| 1 Feb 2024, 10:37 | 11.7 | 11.7 mg/l |
| 9 Jan 2024, 13:25 | 12.9 | 12.9 mg/l |
| 11 Dec 2023, 12:54 | 11.3 | 11.3 mg/l |
| 24 Nov 2023, 13:53 | 11.1 | 11.1 mg/l |
| 23 Oct 2023, 11:34 | 10.4 | 10.4 mg/l |
Water temperature
code 0076 · °C
7.9 °C
Sampled 3 Dec 2024, 23 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 13:44 | 7.9 | 7.9 °C |
| 7 Nov 2024, 11:14 | 12.7 | 12.7 °C |
| 16 Oct 2024, 12:22 | 13.9 | 13.9 °C |
| 3 Sep 2024, 11:33 | 16 | 16 °C |
| 29 Aug 2024, 14:00 | 16.1 | 16.1 °C |
| 9 Jul 2024, 12:46 | 14.9 | 14.9 °C |
| 10 Jun 2024, 11:50 | 13.7 | 13.7 °C |
| 9 May 2024, 15:30 | 15.8 | 15.8 °C |
| 25 Apr 2024, 08:47 | 8.3 | 8.3 °C |
| 6 Mar 2024, 11:10 | 5.7 | 5.7 °C |
| 1 Feb 2024, 10:37 | 6.9 | 6.9 °C |
| 9 Jan 2024, 13:25 | 3.9 | 3.9 °C |
| 11 Dec 2023, 12:54 | 9.2 | 9.2 °C |
| 24 Nov 2023, 13:53 | 9.9 | 9.9 °C |
| 23 Oct 2023, 11:34 | 11.5 | 11.5 °C |
pH
code 0061
7.77
Sampled 3 Dec 2024, 23 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 13:44 | 7.77 | 7.77 |
| 7 Nov 2024, 11:14 | 7.81 | 7.81 |
| 16 Oct 2024, 12:22 | 7.34 | 7.34 |
| 3 Sep 2024, 11:33 | 7.74 | 7.74 |
| 29 Aug 2024, 14:00 | 7.88 | 7.88 |
| 9 Jul 2024, 12:46 | 7.56 | 7.56 |
| 10 Jun 2024, 11:50 | 7.97 | 7.97 |
| 9 May 2024, 15:30 | 7.84 | 7.84 |
| 25 Apr 2024, 08:47 | 7.56 | 7.56 |
| 6 Mar 2024, 11:10 | 7.52 | 7.52 |
| 1 Feb 2024, 10:37 | 7.73 | 7.73 |
| 9 Jan 2024, 13:25 | 7.86 | 7.86 |
| 11 Dec 2023, 12:54 | 7.45 | 7.45 |
| 24 Nov 2023, 13:53 | 7.64 | 7.64 |
| 23 Oct 2023, 11:34 | 7.82 | 7.82 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.045 mg/l
Sampled 3 Dec 2024, 23 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 13:44 | 0.045 | 0.045 mg/l |
| 7 Nov 2024, 11:14 | 0.046 | 0.046 mg/l |
| 16 Oct 2024, 12:22 | 0.05 | 0.05 mg/l |
| 3 Sep 2024, 11:33 | 0.045 | 0.045 mg/l |
| 29 Aug 2024, 14:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Jul 2024, 12:46 | 0.085 | 0.085 mg/l |
| 10 Jun 2024, 11:50 | 0.033 | 0.033 mg/l |
| 9 May 2024, 15:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Apr 2024, 08:47 | 0.044 | 0.044 mg/l |
| 6 Mar 2024, 11:10 | 0.11 | 0.11 mg/l |
| 1 Feb 2024, 10:37 | 0.26 | 0.26 mg/l |
| 9 Jan 2024, 13:25 | 0.052 | 0.052 mg/l |
| 11 Dec 2023, 12:54 | 0.042 | 0.042 mg/l |
| 24 Nov 2023, 13:53 | 0.077 | 0.077 mg/l |
| 23 Oct 2023, 11:34 | 0.1 | 0.1 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.49 mg/l
Sampled 3 Dec 2024, 23 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 13:44 | 2.49 | 2.49 mg/l |
| 7 Nov 2024, 11:14 | 3.08 | 3.08 mg/l |
| 16 Oct 2024, 12:22 | 1.59 | 1.59 mg/l |
| 3 Sep 2024, 11:33 | 2.88 | 2.88 mg/l |
| 29 Aug 2024, 14:00 | 3.59 | 3.59 mg/l |
| 9 Jul 2024, 12:46 | 2.38 | 2.38 mg/l |
| 10 Jun 2024, 11:50 | 3.78 | 3.78 mg/l |
| 9 May 2024, 15:30 | 3.18 | 3.18 mg/l |
| 25 Apr 2024, 08:47 | 3.78 | 3.78 mg/l |
| 6 Mar 2024, 11:10 | 2.29 | 2.29 mg/l |
| 1 Feb 2024, 10:37 | 3.48 | 3.48 mg/l |
| 9 Jan 2024, 13:25 | 2.89 | 2.89 mg/l |
| 11 Dec 2023, 12:54 | 2.19 | 2.19 mg/l |
| 24 Nov 2023, 13:53 | 2.88 | 2.88 mg/l |
| 23 Oct 2023, 11:34 | 2.68 | 2.68 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.07 mg/l
Sampled 3 Dec 2024, 23 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 13:44 | 0.07 | 0.07 mg/l |
| 7 Nov 2024, 11:14 | 0.09 | 0.09 mg/l |
| 16 Oct 2024, 12:22 | 0.17 | 0.17 mg/l |
| 3 Sep 2024, 11:33 | 0.11 | 0.11 mg/l |
| 29 Aug 2024, 14:00 | 0.097 | 0.097 mg/l |
| 9 Jul 2024, 12:46 | 0.1 | 0.1 mg/l |
| 10 Jun 2024, 11:50 | 0.078 | 0.078 mg/l |
| 9 May 2024, 15:30 | 0.075 | 0.075 mg/l |
| 25 Apr 2024, 08:47 | 0.075 | 0.075 mg/l |
| 6 Mar 2024, 11:10 | 0.068 | 0.068 mg/l |
| 1 Feb 2024, 10:37 | 0.08 | 0.08 mg/l |
| 9 Jan 2024, 13:25 | 0.064 | 0.064 mg/l |
| 11 Dec 2023, 12:54 | 0.086 | 0.086 mg/l |
| 24 Nov 2023, 13:53 | 0.084 | 0.084 mg/l |
| 23 Oct 2023, 11:34 | 0.12 | 0.12 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
234 µS/cm
Sampled 3 Dec 2024, 23 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 13:44 | 234 | 234 µS/cm |
| 7 Nov 2024, 11:14 | 270 | 270 µS/cm |
| 16 Oct 2024, 12:22 | 156 | 156 µS/cm |
| 3 Sep 2024, 11:33 | 257 | 257 µS/cm |
| 29 Aug 2024, 14:00 | 282 | 282 µS/cm |
| 9 Jul 2024, 12:46 | 183 | 183 µS/cm |
| 10 Jun 2024, 11:50 | 280 | 280 µS/cm |
| 9 May 2024, 15:30 | 247 | 247 µS/cm |
| 25 Apr 2024, 08:47 | 266 | 266 µS/cm |
| 6 Mar 2024, 11:10 | 213 | 213 µS/cm |
| 1 Feb 2024, 10:37 | 267 | 267 µS/cm |
| 9 Jan 2024, 13:25 | 237 | 237 µS/cm |
| 11 Dec 2023, 12:54 | 208 | 208 µS/cm |
| 24 Nov 2023, 13:53 | 260 | 260 µS/cm |
| 23 Oct 2023, 11:34 | 241 | 241 µS/cm |
Everything measured here
18 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 18 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 15 | Oct 2023 – Dec 2024 | 97.4% 3 Dec 2024 |
| Oxygen, Dissolved as O2 9924 | River water | 15 | Oct 2023 – Dec 2024 | 11.5 mg/l 3 Dec 2024 |
| Temperature of Water 0076 | River water | 15 | Oct 2023 – Dec 2024 | 7.9 °C 3 Dec 2024 |
| pH 0061 | River water | 15 | Oct 2023 – Dec 2024 | 7.77 3 Dec 2024 |
| Ammoniacal Nitrogen as N 0111 | River water | 15 | Oct 2023 – Dec 2024 | 0.045 mg/l 3 Dec 2024 |
| Nitrate as N 0117 | River water | 15 | Oct 2023 – Dec 2024 | 2.49 mg/l 3 Dec 2024 |
| Orthophosphate, reactive as P 0180 | River water | 15 | Oct 2023 – Dec 2024 | 0.07 mg/l 3 Dec 2024 |
| Conductivity at 25 C 0077 | River water | 15 | Oct 2023 – Dec 2024 | 234 µS/cm 3 Dec 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 15 | Oct 2023 – Dec 2024 | 71 mg/l 3 Dec 2024 |
| Ammonia un-ionised as N 0119 | River water | 15 | Oct 2023 – Dec 2024 | 0.00042 mg/l 3 Dec 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 15 | Oct 2023 – Dec 2024 | 5.3 mg/l 3 Dec 2024 |
| Chloride 0172 | River water | 15 | Oct 2023 – Dec 2024 | 15 mg/l 3 Dec 2024 |
| Flow Type 2896 | River water | 6 | Jul 2024 – Dec 2024 | Moderate Flow 3 Dec 2024 |
| Nitrite as N 0118 | River water | 15 | Oct 2023 – Dec 2024 | 0.013 mg/l 3 Dec 2024 |
| Nitrogen, Total as N 9686 | River water | 15 | Oct 2023 – Dec 2024 | 3.3 mg/l 3 Dec 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 15 | Oct 2023 – Dec 2024 | 2.5 mg/l 3 Dec 2024 |
| Phosphorus, Total as P 0348 | River water | 15 | Oct 2023 – Dec 2024 | 0.1 mg/l 3 Dec 2024 |
| Silica, reactive as SiO2 0182 | River water | 15 | Oct 2023 – Dec 2024 | 11 mg/l 3 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.