Corf Copse, Caul Bourne tributary
EA name: CORF COPSE, CAUL BOURNE TRIB
Environment Agency sampling point SO-Y0004525 · 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
- 24 Mar 2026, 12:206 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
- 25 since 8 Apr 2024 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 441982, 89733As published, to the nearest 1 m. Open in a map
- River, by its own name
- Corf Copse
- River, by the map
- An unnamed streamPlaced by position alone (the only river line close by), 2 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Why it was sampled
- Planned investigation (local monitoring) (25 samples)
4 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
95.4%
Sampled 24 Mar 2026, 6 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 12:20 | 95.4 | 95.4% |
| 25 Feb 2026, 12:34 | 96.7 | 96.7% |
| 22 Jan 2026, 11:49 | 98.3 | 98.3% |
| 9 Dec 2025, 11:47 | 94 | 94% |
| 11 Nov 2025, 11:32 | 93 | 93% |
| 24 Oct 2025, 11:18 | 93.7 | 93.7% |
| 24 Sep 2025, 15:03 | 76.6 | 76.6% |
| 9 May 2025, 10:32 | 70.8 | 70.8% |
| 1 Apr 2025, 10:37 | 104.7 | 104.7% |
| 3 Mar 2025, 11:09 | 99 | 99% |
| 4 Feb 2025, 10:34 | 98.3 | 98.3% |
| 16 Jan 2025, 11:48 | 97.5 | 97.5% |
| 16 Dec 2024, 11:17 | 94.6 | 94.6% |
| 6 Dec 2024, 09:57 | 95.1 | 95.1% |
| 26 Nov 2024, 10:17 | 95 | 95% |
| 30 Oct 2024, 10:20 | 89.7 | 89.7% |
| 30 Sep 2024, 10:32 | 93.8 | 93.8% |
| 26 Jul 2024, 09:31 | 74.2 | 74.2% |
| 12 Jun 2024, 11:45 | 86.4 | 86.4% |
| 30 May 2024, 09:43 | 88.9 | 88.9% |
| 8 Apr 2024, 10:42 | 94.3 | 94.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.7 mg/l
Sampled 24 Mar 2026, 6 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 12:20 | 10.7 | 10.7 mg/l |
| 25 Feb 2026, 12:34 | 10.8 | 10.8 mg/l |
| 22 Jan 2026, 11:49 | 11.4 | 11.4 mg/l |
| 9 Dec 2025, 11:47 | 10.3 | 10.3 mg/l |
| 11 Nov 2025, 11:32 | 9.78 | 9.78 mg/l |
| 24 Oct 2025, 11:18 | 10.1 | 10.1 mg/l |
| 24 Sep 2025, 15:03 | 8.12 | 8.12 mg/l |
| 9 May 2025, 10:32 | 7.98 | 7.98 mg/l |
| 1 Apr 2025, 10:37 | 12.2 | 12.2 mg/l |
| 3 Mar 2025, 11:09 | 12.4 | 12.4 mg/l |
| 4 Feb 2025, 10:34 | 11.7 | 11.7 mg/l |
| 16 Jan 2025, 11:48 | 12 | 12 mg/l |
| 16 Dec 2024, 11:17 | 10.8 | 10.8 mg/l |
| 6 Dec 2024, 09:57 | 10.9 | 10.9 mg/l |
| 26 Nov 2024, 10:17 | 10.9 | 10.9 mg/l |
| 30 Oct 2024, 10:20 | 9.34 | 9.34 mg/l |
| 30 Sep 2024, 10:32 | 9.5 | 9.5 mg/l |
| 26 Jul 2024, 09:31 | 7.37 | 7.37 mg/l |
| 12 Jun 2024, 11:45 | 9.25 | 9.25 mg/l |
| 30 May 2024, 09:43 | 9.37 | 9.37 mg/l |
Water temperature
code 0076 · °C
10 °C
Sampled 24 Mar 2026, 6 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 12:20 | 10 | 10 °C |
| 25 Feb 2026, 12:34 | 10.3 | 10.3 °C |
| 22 Jan 2026, 11:49 | 8.7 | 8.7 °C |
| 9 Dec 2025, 11:47 | 11.2 | 11.2 °C |
| 11 Nov 2025, 11:32 | 13 | 13 °C |
| 24 Oct 2025, 11:18 | 11.9 | 11.9 °C |
| 24 Sep 2025, 15:03 | 12.6 | 12.6 °C |
| 9 May 2025, 10:32 | 10 | 10 °C |
| 1 Apr 2025, 10:37 | 8.6 | 8.6 °C |
| 3 Mar 2025, 11:09 | 5.6 | 5.6 °C |
| 4 Feb 2025, 10:34 | 7.7 | 7.7 °C |
| 16 Jan 2025, 11:48 | 6.5 | 6.5 °C |
| 16 Dec 2024, 11:17 | 9.6 | 9.6 °C |
| 6 Dec 2024, 09:57 | 9.3 | 9.3 °C |
| 26 Nov 2024, 10:17 | 9.2 | 9.2 °C |
| 30 Oct 2024, 10:20 | 13.4 | 13.4 °C |
| 30 Sep 2024, 10:32 | 14.7 | 14.7 °C |
| 26 Jul 2024, 09:31 | 15.6 | 15.6 °C |
| 12 Jun 2024, 11:45 | 12.2 | 12.2 °C |
| 30 May 2024, 09:43 | 12.9 | 12.9 °C |
pH
code 0061
8.13
Sampled 24 Mar 2026, 6 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 12:20 | 8.13 | 8.13 |
| 25 Feb 2026, 12:34 | 8.27 | 8.27 |
| 22 Jan 2026, 11:49 | 7.9 | 7.9 |
| 9 Dec 2025, 11:47 | 7.64 | 7.64 |
| 11 Nov 2025, 11:32 | 7.84 | 7.84 |
| 24 Oct 2025, 11:18 | 7.83 | 7.83 |
| 24 Sep 2025, 15:03 | 7.97 | 7.97 |
| 9 May 2025, 10:32 | 8.04 | 8.04 |
| 1 Apr 2025, 10:37 | 8.52 | 8.52 |
| 3 Mar 2025, 11:09 | 8.25 | 8.25 |
| 4 Feb 2025, 10:34 | 8.04 | 8.04 |
| 16 Jan 2025, 11:48 | 8.41 | 8.41 |
| 16 Dec 2024, 11:17 | 8.09 | 8.09 |
| 6 Dec 2024, 09:57 | 7.85 | 7.85 |
| 26 Nov 2024, 10:17 | 7.66 | 7.66 |
| 30 Oct 2024, 10:20 | 8.07 | 8.07 |
| 30 Sep 2024, 10:32 | 7.99 | 7.99 |
| 26 Jul 2024, 09:31 | 8.12 | 8.12 |
| 12 Jun 2024, 11:45 | 8.31 | 8.31 |
| 30 May 2024, 09:43 | 8.44 | 8.44 |
| 8 Apr 2024, 10:42 | 8.25 | 8.25 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 24 Mar 2026, 6 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 12:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Feb 2026, 12:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Jan 2026, 11:49 | 0.086 | 0.086 mg/l |
| 9 Dec 2025, 11:47 | 0.045 | 0.045 mg/l |
| 11 Nov 2025, 11:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Oct 2025, 11:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Sep 2025, 15:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 May 2025, 10:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Apr 2025, 10:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Mar 2025, 11:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Feb 2025, 10:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jan 2025, 11:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Dec 2024, 11:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Dec 2024, 09:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 Oct 2024, 10:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 Sep 2024, 10:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Jul 2024, 09:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Jun 2024, 11:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 May 2024, 09:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Apr 2024, 10:42 | 1.6 | 1.6 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
8 mg/l
Sampled 24 Mar 2026, 6 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 12:20 | 8 | 8 mg/l |
| 25 Feb 2026, 12:34 | 5.08 | 5.08 mg/l |
| 22 Jan 2026, 11:49 | 4.39 | 4.39 mg/l |
| 9 Dec 2025, 11:47 | 2.39 | 2.39 mg/l |
| 11 Nov 2025, 11:32 | 6.49 | 6.49 mg/l |
| 24 Oct 2025, 11:18 | 14 | 14 mg/l |
| 24 Sep 2025, 15:03 | 13 | 13 mg/l |
| 9 May 2025, 10:32 | 8.39 | 8.39 mg/l |
| 1 Apr 2025, 10:37 | 12 | 12 mg/l |
| 3 Mar 2025, 11:09 | 7.29 | 7.29 mg/l |
| 4 Feb 2025, 10:34 | 5.49 | 5.49 mg/l |
| 16 Jan 2025, 11:48 | 6.09 | 6.09 mg/l |
| 16 Dec 2024, 11:17 | 6.28 | 6.28 mg/l |
| 6 Dec 2024, 09:57 | 0.966 | 0.966 mg/l |
| 30 Oct 2024, 10:20 | 4.09 | 4.09 mg/l |
| 30 Sep 2024, 10:32 | 13 | 13 mg/l |
| 26 Jul 2024, 09:31 | 1.8 | 1.8 mg/l |
| 12 Jun 2024, 11:45 | 1.6 | 1.6 mg/l |
| 30 May 2024, 09:43 | 2.6 | 2.6 mg/l |
| 8 Apr 2024, 10:42 | 3.35 | 3.35 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.095 mg/l
Sampled 24 Mar 2026, 6 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 12:20 | 0.095 | 0.095 mg/l |
| 25 Feb 2026, 12:34 | 0.093 | 0.093 mg/l |
| 22 Jan 2026, 11:49 | 0.11 | 0.11 mg/l |
| 9 Dec 2025, 11:47 | 0.14 | 0.14 mg/l |
| 11 Nov 2025, 11:32 | 0.08 | 0.08 mg/l |
| 24 Oct 2025, 11:18 | 0.062 | 0.062 mg/l |
| 24 Sep 2025, 15:03 | 0.071 | 0.071 mg/l |
| 9 May 2025, 10:32 | 0.093 | 0.093 mg/l |
| 1 Apr 2025, 10:37 | 0.052 | 0.052 mg/l |
| 3 Mar 2025, 11:09 | 0.035 | 0.035 mg/l |
| 4 Feb 2025, 10:34 | 0.046 | 0.046 mg/l |
| 16 Jan 2025, 11:48 | 0.051 | 0.051 mg/l |
| 16 Dec 2024, 11:17 | 0.052 | 0.052 mg/l |
| 6 Dec 2024, 09:57 | <0.01 | below 0.01 mg/l (not detected above this) |
| 30 Oct 2024, 10:20 | 0.074 | 0.074 mg/l |
| 30 Sep 2024, 10:32 | 0.11 | 0.11 mg/l |
| 26 Jul 2024, 09:31 | 0.25 | 0.25 mg/l |
| 12 Jun 2024, 11:45 | 0.088 | 0.088 mg/l |
| 30 May 2024, 09:43 | 0.1 | 0.1 mg/l |
| 8 Apr 2024, 10:42 | 0.23 | 0.23 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
597 µS/cm
Sampled 24 Mar 2026, 6 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Mar 2026, 12:20 | 597 | 597 µS/cm |
| 25 Feb 2026, 12:34 | 539 | 539 µS/cm |
| 22 Jan 2026, 11:49 | 450 | 450 µS/cm |
| 9 Dec 2025, 11:47 | 352 | 352 µS/cm |
| 11 Nov 2025, 11:32 | 508 | 508 µS/cm |
| 24 Oct 2025, 11:18 | 571 | 571 µS/cm |
| 24 Sep 2025, 15:03 | 611 | 611 µS/cm |
| 9 May 2025, 10:32 | 594 | 594 µS/cm |
| 1 Apr 2025, 10:37 | 664 | 664 µS/cm |
| 3 Mar 2025, 11:09 | 618 | 618 µS/cm |
| 4 Feb 2025, 10:34 | 466 | 466 µS/cm |
| 16 Jan 2025, 11:48 | 656 | 656 µS/cm |
| 16 Dec 2024, 11:17 | 622 | 622 µS/cm |
| 6 Dec 2024, 09:57 | 470 | 470 µS/cm |
| 26 Nov 2024, 10:17 | 390 | 390 µS/cm |
| 30 Oct 2024, 10:20 | 605 | 605 µS/cm |
| 30 Sep 2024, 10:32 | 431 | 431 µS/cm |
| 26 Jul 2024, 09:31 | 479 | 479 µS/cm |
| 12 Jun 2024, 11:45 | 539 | 539 µS/cm |
| 30 May 2024, 09:43 | 613 | 613 µS/cm |
| 8 Apr 2024, 10:42 | 632 | 632 µS/cm |
Everything measured here
20 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 20 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 21 | Apr 2024 – Mar 2026 | 95.4% 24 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 20 | May 2024 – Mar 2026 | 10.7 mg/l 24 Mar 2026 |
| Temperature of Water 0076 | River water | 20 | May 2024 – Mar 2026 | 10 °C 24 Mar 2026 |
| pH 0061 | River water | 21 | Apr 2024 – Mar 2026 | 8.13 24 Mar 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 20 | Apr 2024 – Mar 2026 | below 0.03 mg/l 24 Mar 2026 |
| Nitrate as N 0117 | River water | 20 | Apr 2024 – Mar 2026 | 8 mg/l 24 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 20 | Apr 2024 – Mar 2026 | 0.095 mg/l 24 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 21 | Apr 2024 – Mar 2026 | 597 µS/cm 24 Mar 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 16 | Sep 2024 – Mar 2026 | 170 mg/l 24 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 19 | May 2024 – Mar 2026 | below 0.00055 mg/l 24 Mar 2026 |
| BOD : 5 Day ATU 0085 | River water | 19 | Apr 2024 – Mar 2026 | 1.5 mg/l 24 Mar 2026 |
| Nitrite as N 0118 | River water | 20 | Apr 2024 – Mar 2026 | below 0.004 mg/l 24 Mar 2026 |
| Nitrogen, Kjeldahl as N 0114 | River water | 19 | Apr 2024 – Mar 2026 | 0.7 mg/l 24 Mar 2026 |
| Nitrogen, Organic as N 0113 | River water | 18 | Apr 2024 – Mar 2026 | 0.67 mg/l 24 Mar 2026 |
| Nitrogen, Total as N 9686 | River water | 19 | Apr 2024 – Mar 2026 | 8.7 mg/l 24 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 20 | Apr 2024 – Mar 2026 | 8 mg/l 24 Mar 2026 |
| No flow /No sample 7668 | River water | 4 | Aug 2024 – Aug 2025 | No flow/discharge at sampling point 13 Aug 2025 |
| Phosphate :- {TIP} 0192 | River water | 20 | Apr 2024 – Mar 2026 | 0.087 mg/l 24 Mar 2026 |
| Phosphorus, Total as P 0348 | River water | 19 | Apr 2024 – Mar 2026 | 0.12 mg/l 24 Mar 2026 |
| Solids, Suspended at 105 C 0135 | River water | 19 | Apr 2024 – Mar 2026 | 7.7 mg/l 24 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.