River Cam Bottisham Lock
EA name: R.CAM BOTTISHAM LOCK
Environment Agency sampling point AN-33M09 · 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
- 5 Mar 2026, 13:077 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 30 Sep 2026 and had nothing newer.
- Samples banked
- 23 since 12 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 (local monitoring)
- Where
- National Grid 550819, 265683As published, to the nearest 1 m. Open in a map
- River, by its own name
- Cam
- River, by the map
- River CamPlaced on the river its name gives, 4 m from the line.
- Next gauge downstream
- Soham Lode On the River Great Ouse · 12 km along the river
- Nearest gauge upstream
- Cambridge Baits Bite On the River Cam · 4.4 km along the river
- Why it was sampled
- Planned investigation (national agency policy) (10 samples)
Planned investigation (local monitoring) (7 samples)
Monitoring (national agency policy) (6 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
95.9%
Sampled 5 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 13:07 | 95.9 | 95.9% |
| 10 Feb 2026, 09:50 | 96.9 | 96.9% |
| 22 Jan 2026, 09:28 | 92.4 | 92.4% |
| 9 Dec 2025, 12:18 | 92.7 | 92.7% |
| 18 Nov 2025, 14:17 | 79.4 | 79.4% |
| 10 Oct 2025, 08:58 | 80.9 | 80.9% |
| 1 Apr 2025, 10:00 | 97.5 | 97.5% |
| 12 Mar 2025, 10:41 | 93.5 | 93.5% |
| 12 Feb 2025, 10:43 | 98.9 | 98.9% |
| 10 Jan 2025, 10:00 | 99.3 | 99.3% |
| 11 Dec 2024, 10:06 | 95.2 | 95.2% |
| 6 Nov 2024, 09:49 | 86.6 | 86.6% |
| 24 Oct 2024, 10:17 | 90.9 | 90.9% |
| 6 Sep 2024, 09:41 | 80.7 | 80.7% |
| 9 Aug 2024, 09:03 | 84.7 | 84.7% |
| 18 Jul 2024, 09:47 | 92.7 | 92.7% |
| 7 Jun 2024, 08:39 | 89.7 | 89.7% |
| 12 Mar 2024, 14:55 | 98.3 | 98.3% |
| 8 Feb 2024, 09:27 | 97.7 | 97.7% |
| 17 Jan 2024, 15:08 | 98 | 98% |
| 19 Dec 2023, 09:34 | 94.7 | 94.7% |
| 10 Nov 2023, 09:40 | 92.3 | 92.3% |
| 12 Oct 2023, 09:36 | 77.3 | 77.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.5 mg/l
Sampled 5 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 13:07 | 10.5 | 10.5 mg/l |
| 10 Feb 2026, 09:50 | 11.3 | 11.3 mg/l |
| 22 Jan 2026, 09:28 | 10.8 | 10.8 mg/l |
| 9 Dec 2025, 12:18 | 10.2 | 10.2 mg/l |
| 18 Nov 2025, 14:17 | 8.99 | 8.99 mg/l |
| 10 Oct 2025, 08:58 | 8.19 | 8.19 mg/l |
| 1 Apr 2025, 10:00 | 10.7 | 10.7 mg/l |
| 12 Mar 2025, 10:41 | 10.8 | 10.8 mg/l |
| 12 Feb 2025, 10:43 | 12.3 | 12.3 mg/l |
| 10 Jan 2025, 10:00 | 13.2 | 13.2 mg/l |
| 11 Dec 2024, 10:06 | 11.5 | 11.5 mg/l |
| 6 Nov 2024, 09:49 | 9.19 | 9.19 mg/l |
| 24 Oct 2024, 10:17 | 9.6 | 9.6 mg/l |
| 6 Sep 2024, 09:41 | 7.56 | 7.56 mg/l |
| 9 Aug 2024, 09:03 | 7.87 | 7.87 mg/l |
| 18 Jul 2024, 09:47 | 8.83 | 8.83 mg/l |
| 7 Jun 2024, 08:39 | 8.98 | 8.98 mg/l |
| 12 Mar 2024, 14:55 | 11.2 | 11.2 mg/l |
| 8 Feb 2024, 09:27 | 11.7 | 11.7 mg/l |
| 17 Jan 2024, 15:08 | 12.9 | 12.9 mg/l |
| 19 Dec 2023, 09:34 | 10.7 | 10.7 mg/l |
| 10 Nov 2023, 09:40 | 10.5 | 10.5 mg/l |
| 12 Oct 2023, 09:36 | 7.47 | 7.47 mg/l |
Water temperature
code 0076 · °C
11.4 °C
Sampled 5 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 13:07 | 11.4 | 11.4 °C |
| 10 Feb 2026, 09:50 | 8.4 | 8.4 °C |
| 22 Jan 2026, 09:28 | 8.5 | 8.5 °C |
| 9 Dec 2025, 12:18 | 10.8 | 10.8 °C |
| 18 Nov 2025, 14:17 | 9.8 | 9.8 °C |
| 10 Oct 2025, 08:58 | 14.7 | 14.7 °C |
| 1 Apr 2025, 10:00 | 11.2 | 11.2 °C |
| 12 Mar 2025, 10:41 | 9.1 | 9.1 °C |
| 12 Feb 2025, 10:43 | 5.9 | 5.9 °C |
| 10 Jan 2025, 10:00 | 3.4 | 3.4 °C |
| 11 Dec 2024, 10:06 | 7.2 | 7.2 °C |
| 6 Nov 2024, 09:49 | 12.6 | 12.6 °C |
| 24 Oct 2024, 10:17 | 12.8 | 12.8 °C |
| 6 Sep 2024, 09:41 | 18.4 | 18.4 °C |
| 9 Aug 2024, 09:03 | 18.8 | 18.8 °C |
| 18 Jul 2024, 09:47 | 17.6 | 17.6 °C |
| 7 Jun 2024, 08:39 | 15.2 | 15.2 °C |
| 12 Mar 2024, 14:55 | 9.5 | 9.5 °C |
| 8 Feb 2024, 09:27 | 7.4 | 7.4 °C |
| 17 Jan 2024, 15:08 | 3.9 | 3.9 °C |
| 19 Dec 2023, 09:34 | 9.9 | 9.9 °C |
| 10 Nov 2023, 09:40 | 9.7 | 9.7 °C |
| 12 Oct 2023, 09:36 | 16.9 | 16.9 °C |
pH
code 0061
7.85
Sampled 5 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 13:07 | 7.85 | 7.85 |
| 10 Feb 2026, 09:50 | 7.95 | 7.95 |
| 22 Jan 2026, 09:28 | 7.77 | 7.77 |
| 9 Dec 2025, 12:18 | 7.65 | 7.65 |
| 18 Nov 2025, 14:17 | 7.64 | 7.64 |
| 10 Oct 2025, 08:58 | 7.76 | 7.76 |
| 1 Apr 2025, 10:00 | 8.1 | 8.1 |
| 12 Mar 2025, 10:41 | 8.05 | 8.05 |
| 12 Feb 2025, 10:43 | 8.16 | 8.16 |
| 10 Jan 2025, 10:00 | 7.93 | 7.93 |
| 11 Dec 2024, 10:06 | 8.02 | 8.02 |
| 6 Nov 2024, 09:49 | 7.75 | 7.75 |
| 24 Oct 2024, 10:17 | 7.71 | 7.71 |
| 6 Sep 2024, 09:41 | 7.67 | 7.67 |
| 9 Aug 2024, 09:03 | 7.96 | 7.96 |
| 18 Jul 2024, 09:47 | 7.87 | 7.87 |
| 7 Jun 2024, 08:39 | 7.82 | 7.82 |
| 12 Mar 2024, 14:55 | 7.9 | 7.9 |
| 8 Feb 2024, 09:27 | 8.05 | 8.05 |
| 17 Jan 2024, 15:08 | 8.11 | 8.11 |
| 19 Dec 2023, 09:34 | 7.89 | 7.89 |
| 10 Nov 2023, 09:40 | 7.83 | 7.83 |
| 12 Oct 2023, 09:36 | 7.71 | 7.71 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.047 mg/l
Sampled 5 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 13:07 | 0.047 | 0.047 mg/l |
| 10 Feb 2026, 09:50 | 0.29 | 0.29 mg/l |
| 22 Jan 2026, 09:28 | 0.3 | 0.3 mg/l |
| 9 Dec 2025, 12:18 | 0.074 | 0.074 mg/l |
| 18 Nov 2025, 14:17 | 0.097 | 0.097 mg/l |
| 10 Oct 2025, 08:58 | 0.04 | 0.04 mg/l |
| 1 Apr 2025, 10:00 | 0.072 | 0.072 mg/l |
| 12 Mar 2025, 10:41 | 1.8 | 1.8 mg/l |
| 12 Feb 2025, 10:43 | 0.061 | 0.061 mg/l |
| 10 Jan 2025, 10:00 | 0.057 | 0.057 mg/l |
| 11 Dec 2024, 10:06 | 0.24 | 0.24 mg/l |
| 6 Nov 2024, 09:49 | 0.072 | 0.072 mg/l |
| 24 Oct 2024, 10:17 | 0.037 | 0.037 mg/l |
| 6 Sep 2024, 09:41 | 0.067 | 0.067 mg/l |
| 9 Aug 2024, 09:03 | 0.035 | 0.035 mg/l |
| 18 Jul 2024, 09:47 | 0.051 | 0.051 mg/l |
| 7 Jun 2024, 08:39 | 0.056 | 0.056 mg/l |
| 12 Mar 2024, 14:55 | 0.073 | 0.073 mg/l |
| 8 Feb 2024, 09:27 | 0.17 | 0.17 mg/l |
| 17 Jan 2024, 15:08 | 0.16 | 0.16 mg/l |
| 19 Dec 2023, 09:34 | 0.078 | 0.078 mg/l |
| 10 Nov 2023, 09:40 | 0.2 | 0.2 mg/l |
| 12 Oct 2023, 09:36 | 0.057 | 0.057 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
13 mg/l
Sampled 5 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 13:07 | 13 | 13 mg/l |
| 10 Feb 2026, 09:50 | 13.9 | 13.9 mg/l |
| 22 Jan 2026, 09:28 | 13.9 | 13.9 mg/l |
| 9 Dec 2025, 12:18 | 12.9 | 12.9 mg/l |
| 18 Nov 2025, 14:17 | 10.8 | 10.8 mg/l |
| 10 Oct 2025, 08:58 | 15 | 15 mg/l |
| 1 Apr 2025, 10:00 | 13.9 | 13.9 mg/l |
| 12 Mar 2025, 10:41 | 13.9 | 13.9 mg/l |
| 12 Feb 2025, 10:43 | 12 | 12 mg/l |
| 10 Jan 2025, 10:00 | 13 | 13 mg/l |
| 11 Dec 2024, 10:06 | 12.9 | 12.9 mg/l |
| 6 Nov 2024, 09:49 | 13.9 | 13.9 mg/l |
| 24 Oct 2024, 10:17 | 13 | 13 mg/l |
| 6 Sep 2024, 09:41 | 13.9 | 13.9 mg/l |
| 9 Aug 2024, 09:03 | 13.9 | 13.9 mg/l |
| 18 Jul 2024, 09:47 | 9.96 | 9.96 mg/l |
| 7 Jun 2024, 08:39 | 14 | 14 mg/l |
| 12 Mar 2024, 14:55 | 9.93 | 9.93 mg/l |
| 17 Jan 2024, 15:08 | 12.9 | 12.9 mg/l |
| 19 Dec 2023, 09:34 | 12.9 | 12.9 mg/l |
| 10 Nov 2023, 09:40 | 11.9 | 11.9 mg/l |
| 12 Oct 2023, 09:36 | 13 | 13 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.15 mg/l
Sampled 5 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 13:07 | 0.15 | 0.15 mg/l |
| 10 Feb 2026, 09:50 | 0.12 | 0.12 mg/l |
| 22 Jan 2026, 09:28 | 0.16 | 0.16 mg/l |
| 9 Dec 2025, 12:18 | 0.28 | 0.28 mg/l |
| 18 Nov 2025, 14:17 | 0.28 | 0.28 mg/l |
| 10 Oct 2025, 08:58 | 0.5 | 0.5 mg/l |
| 1 Apr 2025, 10:00 | 0.12 | 0.12 mg/l |
| 12 Mar 2025, 10:41 | 0.14 | 0.14 mg/l |
| 12 Feb 2025, 10:43 | 0.12 | 0.12 mg/l |
| 10 Jan 2025, 10:00 | 0.11 | 0.11 mg/l |
| 11 Dec 2024, 10:06 | 0.14 | 0.14 mg/l |
| 6 Nov 2024, 09:49 | 0.28 | 0.28 mg/l |
| 24 Oct 2024, 10:17 | 0.26 | 0.26 mg/l |
| 6 Sep 2024, 09:41 | 0.25 | 0.25 mg/l |
| 9 Aug 2024, 09:03 | 0.25 | 0.25 mg/l |
| 18 Jul 2024, 09:47 | 0.23 | 0.23 mg/l |
| 7 Jun 2024, 08:39 | 0.2 | 0.2 mg/l |
| 12 Mar 2024, 14:55 | 0.12 | 0.12 mg/l |
| 8 Feb 2024, 09:27 | 0.16 | 0.16 mg/l |
| 17 Jan 2024, 15:08 | 0.13 | 0.13 mg/l |
| 19 Dec 2023, 09:34 | 0.14 | 0.14 mg/l |
| 10 Nov 2023, 09:40 | 0.15 | 0.15 mg/l |
| 12 Oct 2023, 09:36 | 0.33 | 0.33 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
901 µS/cm
Sampled 5 Mar 2026, 7 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 13:07 | 901 | 901 µS/cm |
| 10 Feb 2026, 09:50 | 826 | 826 µS/cm |
| 22 Jan 2026, 09:28 | 895 | 895 µS/cm |
| 9 Dec 2025, 12:18 | 879 | 879 µS/cm |
| 18 Nov 2025, 14:17 | 831 | 831 µS/cm |
| 10 Oct 2025, 08:58 | 1007 | 1007 µS/cm |
| 1 Apr 2025, 10:00 | 868 | 868 µS/cm |
| 12 Mar 2025, 10:41 | 917 | 917 µS/cm |
| 12 Feb 2025, 10:43 | 839 | 839 µS/cm |
| 10 Jan 2025, 10:00 | 834 | 834 µS/cm |
| 11 Dec 2024, 10:06 | 754 | 754 µS/cm |
| 6 Nov 2024, 09:49 | 919 | 919 µS/cm |
| 24 Oct 2024, 10:17 | 886 | 886 µS/cm |
| 6 Sep 2024, 09:41 | 895 | 895 µS/cm |
| 9 Aug 2024, 09:03 | 905 | 905 µS/cm |
| 18 Jul 2024, 09:47 | 778 | 778 µS/cm |
| 7 Jun 2024, 08:39 | 883 | 883 µS/cm |
| 12 Mar 2024, 14:55 | 850 | 850 µS/cm |
| 8 Feb 2024, 09:27 | 746 | 746 µS/cm |
| 17 Jan 2024, 15:08 | 934 | 934 µS/cm |
| 19 Dec 2023, 09:34 | 914 | 914 µS/cm |
| 10 Nov 2023, 09:40 | 917 | 917 µS/cm |
| 12 Oct 2023, 09:36 | 970 | 970 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 | 23 | Oct 2023 – Mar 2026 | 95.9% 5 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Oct 2023 – Mar 2026 | 10.5 mg/l 5 Mar 2026 |
| Temperature of Water 0076 | River water | 23 | Oct 2023 – Mar 2026 | 11.4 °C 5 Mar 2026 |
| pH 0061 | River water | 23 | Oct 2023 – Mar 2026 | 7.85 5 Mar 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 23 | Oct 2023 – Mar 2026 | 0.047 mg/l 5 Mar 2026 |
| Nitrate as N 0117 | River water | 22 | Oct 2023 – Mar 2026 | 13 mg/l 5 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 23 | Oct 2023 – Mar 2026 | 0.15 mg/l 5 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Oct 2023 – Mar 2026 | 901 µS/cm 5 Mar 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 23 | Oct 2023 – Mar 2026 | 260 mg/l 5 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 23 | Oct 2023 – Mar 2026 | 0.00068 mg/l 5 Mar 2026 |
| Nitrite as N 0118 | River water | 22 | Oct 2023 – Mar 2026 | 0.031 mg/l 5 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 22 | Oct 2023 – Mar 2026 | 13 mg/l 5 Mar 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.