Melbourn Brook Road Culvert Meldreth
EA name: MELBOURN BK.RD.CULVERT MELDRETH
Environment Agency sampling point AN-30M21 · 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
- 13 Aug 2026, 09:3649 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 28 since 6 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (national agency policy)
- Where
- National Grid 537800, 246800As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- Not placedGrid reference only to 100 m and no line carries the name it gives, so position alone cannot choose. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Planned investigation (national agency policy) (15 samples)
Planned investigation (local monitoring) (7 samples)
Monitoring (national agency policy) (6 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
91.1%
Sampled 13 Aug 2026, 49 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 09:36 | 91.1 | 91.1% |
| 6 Jul 2026, 11:15 | 92.4 | 92.4% |
| 10 Jun 2026, 10:42 | 97.4 | 97.4% |
| 15 May 2026, 11:22 | 99.8 | 99.8% |
| 13 Apr 2026, 08:53 | 97.6 | 97.6% |
| 10 Mar 2026, 08:27 | 97 | 97% |
| 9 Feb 2026, 08:32 | 95.9 | 95.9% |
| 13 Jan 2026, 11:00 | 95.5 | 95.5% |
| 4 Dec 2025, 12:44 | 91.6 | 91.6% |
| 10 Nov 2025, 08:28 | 90.7 | 90.7% |
| 2 Oct 2025, 09:02 | 94.5 | 94.5% |
| 9 Apr 2025, 09:26 | 101.9 | 101.9% |
| 4 Mar 2025, 08:57 | 98.9 | 98.9% |
| 5 Feb 2025, 09:40 | 92.9 | 92.9% |
| 3 Jan 2025, 11:46 | 96.2 | 96.2% |
| 2 Dec 2024, 09:03 | 92.7 | 92.7% |
| 7 Nov 2024, 08:57 | 98.4 | 98.4% |
| 7 Oct 2024, 09:12 | 96.7 | 96.7% |
| 3 Sep 2024, 09:28 | 93.6 | 93.6% |
| 2 Aug 2024, 09:10 | 97.8 | 97.8% |
| 10 Jul 2024, 10:12 | 95.5 | 95.5% |
| 5 Jun 2024, 07:53 | 94.2 | 94.2% |
| 8 Mar 2024, 12:29 | 96.9 | 96.9% |
| 1 Feb 2024, 08:49 | 78.8 | 78.8% |
| 4 Jan 2024, 08:07 | 94.9 | 94.9% |
| 4 Dec 2023, 08:13 | 89 | 89% |
| 1 Nov 2023, 08:32 | 93.9 | 93.9% |
| 6 Oct 2023, 09:46 | 95.2 | 95.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.46 mg/l
Sampled 13 Aug 2026, 49 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 09:36 | 8.46 | 8.46 mg/l |
| 6 Jul 2026, 11:15 | 8.52 | 8.52 mg/l |
| 10 Jun 2026, 10:42 | 9.99 | 9.99 mg/l |
| 15 May 2026, 11:22 | 11.1 | 11.1 mg/l |
| 13 Apr 2026, 08:53 | 11.4 | 11.4 mg/l |
| 10 Mar 2026, 08:27 | 10.8 | 10.8 mg/l |
| 9 Feb 2026, 08:32 | 10.9 | 10.9 mg/l |
| 13 Jan 2026, 11:00 | 10.7 | 10.7 mg/l |
| 4 Dec 2025, 12:44 | 10.5 | 10.5 mg/l |
| 10 Nov 2025, 08:28 | 9.71 | 9.71 mg/l |
| 2 Oct 2025, 09:02 | 9.93 | 9.93 mg/l |
| 9 Apr 2025, 09:26 | 11.6 | 11.6 mg/l |
| 4 Mar 2025, 08:57 | 11.5 | 11.5 mg/l |
| 5 Feb 2025, 09:40 | 11.1 | 11.1 mg/l |
| 3 Jan 2025, 11:46 | 11.3 | 11.3 mg/l |
| 2 Dec 2024, 09:03 | 10.2 | 10.2 mg/l |
| 7 Nov 2024, 08:57 | 10.6 | 10.6 mg/l |
| 7 Oct 2024, 09:12 | 10.1 | 10.1 mg/l |
| 3 Sep 2024, 09:28 | 9.27 | 9.27 mg/l |
| 2 Aug 2024, 09:10 | 10.1 | 10.1 mg/l |
| 10 Jul 2024, 10:12 | 9.77 | 9.77 mg/l |
| 5 Jun 2024, 07:53 | 10.6 | 10.6 mg/l |
| 8 Mar 2024, 12:29 | 10.8 | 10.8 mg/l |
| 1 Feb 2024, 08:49 | 9.25 | 9.25 mg/l |
| 4 Jan 2024, 08:07 | 10.7 | 10.7 mg/l |
| 4 Dec 2023, 08:13 | 10.1 | 10.1 mg/l |
| 1 Nov 2023, 08:32 | 9.83 | 9.83 mg/l |
| 6 Oct 2023, 09:46 | 9.62 | 9.62 mg/l |
Water temperature
code 0076 · °C
18.8 °C
Sampled 13 Aug 2026, 49 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 09:36 | 18.8 | 18.8 °C |
| 6 Jul 2026, 11:15 | 19.2 | 19.2 °C |
| 10 Jun 2026, 10:42 | 14.1 | 14.1 °C |
| 15 May 2026, 11:22 | 10.7 | 10.7 °C |
| 13 Apr 2026, 08:53 | 8.4 | 8.4 °C |
| 10 Mar 2026, 08:27 | 10.4 | 10.4 °C |
| 9 Feb 2026, 08:32 | 9.7 | 9.7 °C |
| 13 Jan 2026, 11:00 | 10.1 | 10.1 °C |
| 4 Dec 2025, 12:44 | 9.4 | 9.4 °C |
| 10 Nov 2025, 08:28 | 12.2 | 12.2 °C |
| 2 Oct 2025, 09:02 | 13 | 13 °C |
| 9 Apr 2025, 09:26 | 9.7 | 9.7 °C |
| 4 Mar 2025, 08:57 | 8.8 | 8.8 °C |
| 5 Feb 2025, 09:40 | 7.7 | 7.7 °C |
| 3 Jan 2025, 11:46 | 8.2 | 8.2 °C |
| 2 Dec 2024, 09:03 | 10.9 | 10.9 °C |
| 7 Nov 2024, 08:57 | 11.9 | 11.9 °C |
| 7 Oct 2024, 09:12 | 13.2 | 13.2 °C |
| 3 Sep 2024, 09:28 | 15.7 | 15.7 °C |
| 2 Aug 2024, 09:10 | 13.9 | 13.9 °C |
| 10 Jul 2024, 10:12 | 14.2 | 14.2 °C |
| 5 Jun 2024, 07:53 | 10.1 | 10.1 °C |
| 8 Mar 2024, 12:29 | 10.4 | 10.4 °C |
| 1 Feb 2024, 08:49 | 8.3 | 8.3 °C |
| 4 Jan 2024, 08:07 | 9.8 | 9.8 °C |
| 4 Dec 2023, 08:13 | 9.9 | 9.9 °C |
| 1 Nov 2023, 08:32 | 13.2 | 13.2 °C |
| 6 Oct 2023, 09:46 | 14.8 | 14.8 °C |
pH
code 0061
7.83
Sampled 13 Aug 2026, 49 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 09:36 | 7.83 | 7.83 |
| 6 Jul 2026, 11:15 | 7.95 | 7.95 |
| 10 Jun 2026, 10:42 | 7.92 | 7.92 |
| 15 May 2026, 11:22 | 8.06 | 8.06 |
| 13 Apr 2026, 08:53 | 8.63 | 8.63 |
| 10 Mar 2026, 08:27 | 7.92 | 7.92 |
| 9 Feb 2026, 08:32 | 8.09 | 8.09 |
| 13 Jan 2026, 11:00 | 7.83 | 7.83 |
| 4 Dec 2025, 12:44 | 7.75 | 7.75 |
| 10 Nov 2025, 08:28 | 7.96 | 7.96 |
| 2 Oct 2025, 09:02 | 8.04 | 8.04 |
| 9 Apr 2025, 09:26 | 7.9 | 7.9 |
| 4 Mar 2025, 08:57 | 7.76 | 7.76 |
| 5 Feb 2025, 09:40 | 8.07 | 8.07 |
| 3 Jan 2025, 11:46 | 7.72 | 7.72 |
| 2 Dec 2024, 09:03 | 7.78 | 7.78 |
| 7 Nov 2024, 08:57 | 7.88 | 7.88 |
| 7 Oct 2024, 09:12 | 7.78 | 7.78 |
| 3 Sep 2024, 09:28 | 7.82 | 7.82 |
| 2 Aug 2024, 09:10 | 7.89 | 7.89 |
| 10 Jul 2024, 10:12 | 7.91 | 7.91 |
| 5 Jun 2024, 07:53 | 7.97 | 7.97 |
| 8 Mar 2024, 12:29 | 7.76 | 7.76 |
| 1 Feb 2024, 08:49 | 7.96 | 7.96 |
| 4 Jan 2024, 08:07 | 7.85 | 7.85 |
| 4 Dec 2023, 08:13 | 7.82 | 7.82 |
| 1 Nov 2023, 08:32 | 7.82 | 7.82 |
| 6 Oct 2023, 09:46 | 7.77 | 7.77 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.032 mg/l
Sampled 13 Aug 2026, 49 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 09:36 | 0.032 | 0.032 mg/l |
| 6 Jul 2026, 11:15 | 0.051 | 0.051 mg/l |
| 10 Jun 2026, 10:42 | 0.062 | 0.062 mg/l |
| 15 May 2026, 11:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Apr 2026, 08:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Mar 2026, 08:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Feb 2026, 08:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Jan 2026, 11:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Dec 2025, 12:44 | 0.036 | 0.036 mg/l |
| 10 Nov 2025, 08:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Oct 2025, 09:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Apr 2025, 09:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Mar 2025, 08:57 | 0.058 | 0.058 mg/l |
| 5 Feb 2025, 09:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jan 2025, 11:46 | 0.039 | 0.039 mg/l |
| 2 Dec 2024, 09:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Nov 2024, 08:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Oct 2024, 09:12 | 0.061 | 0.061 mg/l |
| 3 Sep 2024, 09:28 | 0.033 | 0.033 mg/l |
| 2 Aug 2024, 09:10 | 0.038 | 0.038 mg/l |
| 10 Jul 2024, 10:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Jun 2024, 07:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Mar 2024, 12:29 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Feb 2024, 08:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Jan 2024, 08:07 | 0.043 | 0.043 mg/l |
| 4 Dec 2023, 08:13 | 0.071 | 0.071 mg/l |
| 1 Nov 2023, 08:32 | 0.031 | 0.031 mg/l |
| 6 Oct 2023, 09:46 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
11 mg/l
Sampled 13 Aug 2026, 49 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 09:36 | 11 | 11 mg/l |
| 6 Jul 2026, 11:15 | 9.89 | 9.89 mg/l |
| 10 Jun 2026, 10:42 | 11.9 | 11.9 mg/l |
| 15 May 2026, 11:22 | 14 | 14 mg/l |
| 13 Apr 2026, 08:53 | 15 | 15 mg/l |
| 10 Mar 2026, 08:27 | 13 | 13 mg/l |
| 9 Feb 2026, 08:32 | 13 | 13 mg/l |
| 13 Jan 2026, 11:00 | 9.97 | 9.97 mg/l |
| 4 Dec 2025, 12:44 | 10.9 | 10.9 mg/l |
| 10 Nov 2025, 08:28 | 8.49 | 8.49 mg/l |
| 2 Oct 2025, 09:02 | 12 | 12 mg/l |
| 9 Apr 2025, 09:26 | 13 | 13 mg/l |
| 4 Mar 2025, 08:57 | 12 | 12 mg/l |
| 5 Feb 2025, 09:40 | 14 | 14 mg/l |
| 3 Jan 2025, 11:46 | 11 | 11 mg/l |
| 7 Nov 2024, 08:57 | 13 | 13 mg/l |
| 7 Oct 2024, 09:12 | 10.9 | 10.9 mg/l |
| 3 Sep 2024, 09:28 | 13.9 | 13.9 mg/l |
| 2 Aug 2024, 09:10 | 14 | 14 mg/l |
| 10 Jul 2024, 10:12 | 14 | 14 mg/l |
| 5 Jun 2024, 07:53 | 14 | 14 mg/l |
| 8 Mar 2024, 12:29 | 14 | 14 mg/l |
| 1 Feb 2024, 08:49 | 15 | 15 mg/l |
| 4 Jan 2024, 08:07 | 9.87 | 9.87 mg/l |
| 4 Dec 2023, 08:13 | 13.9 | 13.9 mg/l |
| 1 Nov 2023, 08:32 | 12.9 | 12.9 mg/l |
| 6 Oct 2023, 09:46 | 15 | 15 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
above 2.5 mg/l (the most the test can count)
Sampled 13 Aug 2026, 49 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 09:36 | >2.5 | above 2.5 mg/l (the most the test can count) |
| 6 Jul 2026, 11:15 | 3 | 3 mg/l |
| 10 Jun 2026, 10:42 | 2.2 | 2.2 mg/l |
| 15 May 2026, 11:22 | 0.5 | 0.5 mg/l |
| 13 Apr 2026, 08:53 | 0.073 | 0.073 mg/l |
| 10 Mar 2026, 08:27 | 0.72 | 0.72 mg/l |
| 9 Feb 2026, 08:32 | 0.87 | 0.87 mg/l |
| 13 Jan 2026, 11:00 | 0.8 | 0.8 mg/l |
| 4 Dec 2025, 12:44 | 1.5 | 1.5 mg/l |
| 10 Nov 2025, 08:28 | 0.22 | 0.22 mg/l |
| 2 Oct 2025, 09:02 | 0.52 | 0.52 mg/l |
| 9 Apr 2025, 09:26 | 0.56 | 0.56 mg/l |
| 4 Mar 2025, 08:57 | 0.51 | 0.51 mg/l |
| 5 Feb 2025, 09:40 | 0.049 | 0.049 mg/l |
| 3 Jan 2025, 11:46 | 0.62 | 0.62 mg/l |
| 2 Dec 2024, 09:03 | 0.7 | 0.7 mg/l |
| 7 Nov 2024, 08:57 | 0.47 | 0.47 mg/l |
| 7 Oct 2024, 09:12 | 0.78 | 0.78 mg/l |
| 3 Sep 2024, 09:28 | 1.9 | 1.9 mg/l |
| 2 Aug 2024, 09:10 | 0.13 | 0.13 mg/l |
| 10 Jul 2024, 10:12 | 0.54 | 0.54 mg/l |
| 5 Jun 2024, 07:53 | 0.056 | 0.056 mg/l |
| 8 Mar 2024, 12:29 | 0.39 | 0.39 mg/l |
| 1 Feb 2024, 08:49 | 0.35 | 0.35 mg/l |
| 4 Jan 2024, 08:07 | 0.54 | 0.54 mg/l |
| 4 Dec 2023, 08:13 | 0.57 | 0.57 mg/l |
| 1 Nov 2023, 08:32 | 1.1 | 1.1 mg/l |
| 6 Oct 2023, 09:46 | 2.1 | 2.1 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
840 µS/cm
Sampled 13 Aug 2026, 49 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 09:36 | 840 | 840 µS/cm |
| 6 Jul 2026, 11:15 | 899 | 899 µS/cm |
| 10 Jun 2026, 10:42 | 875 | 875 µS/cm |
| 15 May 2026, 11:22 | 874 | 874 µS/cm |
| 13 Apr 2026, 08:53 | 883 | 883 µS/cm |
| 10 Mar 2026, 08:27 | 897 | 897 µS/cm |
| 9 Feb 2026, 08:32 | 900 | 900 µS/cm |
| 13 Jan 2026, 11:00 | 853 | 853 µS/cm |
| 4 Dec 2025, 12:44 | 825 | 825 µS/cm |
| 10 Nov 2025, 08:28 | 733 | 733 µS/cm |
| 2 Oct 2025, 09:02 | 822 | 822 µS/cm |
| 9 Apr 2025, 09:26 | 829 | 829 µS/cm |
| 4 Mar 2025, 08:57 | 848 | 848 µS/cm |
| 5 Feb 2025, 09:40 | 852 | 852 µS/cm |
| 3 Jan 2025, 11:46 | 853 | 853 µS/cm |
| 2 Dec 2024, 09:03 | 844 | 844 µS/cm |
| 7 Nov 2024, 08:57 | 838 | 838 µS/cm |
| 7 Oct 2024, 09:12 | 859 | 859 µS/cm |
| 3 Sep 2024, 09:28 | 883 | 883 µS/cm |
| 2 Aug 2024, 09:10 | 852 | 852 µS/cm |
| 10 Jul 2024, 10:12 | 832 | 832 µS/cm |
| 5 Jun 2024, 07:53 | 830 | 830 µS/cm |
| 8 Mar 2024, 12:29 | 886 | 886 µS/cm |
| 1 Feb 2024, 08:49 | 880 | 880 µS/cm |
| 4 Jan 2024, 08:07 | 914 | 914 µS/cm |
| 4 Dec 2023, 08:13 | 940 | 940 µS/cm |
| 1 Nov 2023, 08:32 | 889 | 889 µS/cm |
| 6 Oct 2023, 09:46 | 906 | 906 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 | 28 | Oct 2023 – Aug 2026 | 91.1% 13 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 28 | Oct 2023 – Aug 2026 | 8.46 mg/l 13 Aug 2026 |
| Temperature of Water 0076 | River water | 28 | Oct 2023 – Aug 2026 | 18.8 °C 13 Aug 2026 |
| pH 0061 | River water | 28 | Oct 2023 – Aug 2026 | 7.83 13 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 28 | Oct 2023 – Aug 2026 | 0.032 mg/l 13 Aug 2026 |
| Nitrate as N 0117 | River water | 27 | Oct 2023 – Aug 2026 | 11 mg/l 13 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 28 | Oct 2023 – Aug 2026 | above 2.5 mg/l 13 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 28 | Oct 2023 – Aug 2026 | 840 µS/cm 13 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 28 | Oct 2023 – Aug 2026 | 240 mg/l 13 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 28 | Oct 2023 – Aug 2026 | 0.00076 mg/l 13 Aug 2026 |
| Nitrite as N 0118 | River water | 27 | Oct 2023 – Aug 2026 | 0.033 mg/l 13 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 28 | Oct 2023 – Aug 2026 | 11 mg/l 13 Aug 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.