Upstream of Weak Rhinefield Bridge, River Blackwater
EA name: U/S WEAK RHINEFIELD BRIDGE,R.BLACKWATER (also listed as “BLACK WATER U/S WEAK RHINEFIELD BRIDGE.”)
Environment Agency sampling point SO-G0006583 · 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 Aug 2026, 13:0259 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 32 since 7 Nov 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 426688, 104595As published, to the nearest 1 m. Open in a map
- River, by its own name
- Black Water
- River, by the map
- Black WaterPlaced on the river its name gives, 0 m from the line.
- Next gauge downstream
- Brockenhurst On the Lymington · 8.0 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (20 samples)
Planned investigation (national agency policy) (12 samples)
4 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
91.4%
Sampled 3 Jun 2026, 4 months ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Jun 2026, 12:02 | 91.4 | 91.4% |
| 1 May 2026, 11:16 | 81.7 | 81.7% |
| 16 Apr 2026, 11:33 | 96.5 | 96.5% |
| 6 Mar 2026, 08:09 | 93 | 93% |
| 18 Feb 2026, 13:18 | 97.7 | 97.7% |
| 22 Jan 2026, 10:23 | 91.6 | 91.6% |
| 4 Dec 2025, 14:28 | 93.9 | 93.9% |
| 13 Nov 2025, 15:33 | 91.6 | 91.6% |
| 14 Oct 2025, 12:40 | 80.7 | 80.7% |
| 1 Sep 2025, 12:44 | 80.6 | 80.6% |
| 2 Jun 2025, 11:31 | 69 | 69% |
| 7 May 2025, 11:25 | 84.4 | 84.4% |
| 8 Apr 2025, 13:47 | 101.1 | 101.1% |
| 10 Mar 2025, 13:52 | 99.7 | 99.7% |
| 18 Feb 2025, 16:27 | 94.7 | 94.7% |
| 22 Jan 2025, 12:28 | 96.4 | 96.4% |
| 5 Dec 2024, 09:59 | 91.4 | 91.4% |
| 14 Nov 2024, 10:48 | 90.8 | 90.8% |
| 30 Oct 2024, 08:53 | 89.5 | 89.5% |
| 3 Sep 2024, 12:42 | 78.5 | 78.5% |
| 6 Aug 2024, 14:43 | 77.9 | 77.9% |
| 11 Jul 2024, 13:26 | 96.8 | 96.8% |
| 6 Jun 2024, 14:44 | 93.4 | 93.4% |
| 1 Mar 2024, 14:36 | 99.5 | 99.5% |
| 8 Jan 2024, 14:59 | 94.6 | 94.6% |
| 7 Nov 2023, 13:51 | 94.2 | 94.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.23 mg/l
Sampled 3 Jun 2026, 4 months ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Jun 2026, 12:02 | 9.23 | 9.23 mg/l |
| 1 May 2026, 11:16 | 8.57 | 8.57 mg/l |
| 16 Apr 2026, 11:33 | 10.4 | 10.4 mg/l |
| 6 Mar 2026, 08:09 | 11 | 11 mg/l |
| 18 Feb 2026, 13:18 | 12.3 | 12.3 mg/l |
| 22 Jan 2026, 10:23 | 10.8 | 10.8 mg/l |
| 4 Dec 2025, 14:28 | 11.1 | 11.1 mg/l |
| 13 Nov 2025, 15:33 | 9.69 | 9.69 mg/l |
| 14 Oct 2025, 12:40 | 8.54 | 8.54 mg/l |
| 1 Sep 2025, 12:44 | 7.99 | 7.99 mg/l |
| 2 Jun 2025, 11:31 | 7 | 7 mg/l |
| 7 May 2025, 11:25 | 9.35 | 9.35 mg/l |
| 8 Apr 2025, 13:47 | 11.1 | 11.1 mg/l |
| 10 Mar 2025, 13:52 | 11.3 | 11.3 mg/l |
| 18 Feb 2025, 16:27 | 12.3 | 12.3 mg/l |
| 22 Jan 2025, 12:28 | 12.5 | 12.5 mg/l |
| 5 Dec 2024, 09:59 | 10.3 | 10.3 mg/l |
| 14 Nov 2024, 10:48 | 10.5 | 10.5 mg/l |
| 30 Oct 2024, 08:53 | 9.6 | 9.6 mg/l |
| 3 Sep 2024, 12:42 | 7.52 | 7.52 mg/l |
| 6 Aug 2024, 14:43 | 7.34 | 7.34 mg/l |
| 11 Jul 2024, 13:26 | 9.25 | 9.25 mg/l |
| 6 Jun 2024, 14:44 | 9.41 | 9.41 mg/l |
| 1 Mar 2024, 14:36 | 11.8 | 11.8 mg/l |
| 8 Jan 2024, 14:59 | 12.5 | 12.5 mg/l |
| 7 Nov 2023, 13:51 | 11 | 11 mg/l |
Water temperature
code 0076 · °C
14.8 °C
Sampled 3 Jun 2026, 4 months ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Jun 2026, 12:02 | 14.8 | 14.8 °C |
| 1 May 2026, 11:16 | 13.1 | 13.1 °C |
| 16 Apr 2026, 11:33 | 11.9 | 11.9 °C |
| 6 Mar 2026, 08:09 | 7.9 | 7.9 °C |
| 18 Feb 2026, 13:18 | 5.6 | 5.6 °C |
| 22 Jan 2026, 10:23 | 8.1 | 8.1 °C |
| 4 Dec 2025, 14:28 | 8 | 8 °C |
| 13 Nov 2025, 15:33 | 12.7 | 12.7 °C |
| 14 Oct 2025, 12:40 | 12.7 | 12.7 °C |
| 1 Sep 2025, 12:44 | 15.7 | 15.7 °C |
| 2 Jun 2025, 11:31 | 14.6 | 14.6 °C |
| 7 May 2025, 11:25 | 10.7 | 10.7 °C |
| 8 Apr 2025, 13:47 | 11 | 11 °C |
| 10 Mar 2025, 13:52 | 9.8 | 9.8 °C |
| 18 Feb 2025, 16:27 | 4.4 | 4.4 °C |
| 22 Jan 2025, 12:28 | 4.5 | 4.5 °C |
| 5 Dec 2024, 09:59 | 10 | 10 °C |
| 14 Nov 2024, 10:48 | 9.1 | 9.1 °C |
| 30 Oct 2024, 08:53 | 12.1 | 12.1 °C |
| 3 Sep 2024, 12:42 | 17.3 | 17.3 °C |
| 6 Aug 2024, 14:43 | 18.1 | 18.1 °C |
| 11 Jul 2024, 13:26 | 17.4 | 17.4 °C |
| 6 Jun 2024, 14:44 | 14.9 | 14.9 °C |
| 1 Mar 2024, 14:36 | 8 | 8 °C |
| 8 Jan 2024, 14:59 | 3.5 | 3.5 °C |
| 7 Nov 2023, 13:51 | 8.6 | 8.6 °C |
pH
code 0061
6.67
Sampled 3 Jun 2026, 4 months ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Jun 2026, 12:02 | 6.67 | 6.67 |
| 1 May 2026, 11:16 | 6.87 | 6.87 |
| 16 Apr 2026, 11:33 | 6.85 | 6.85 |
| 6 Mar 2026, 08:09 | 6.56 | 6.56 |
| 18 Feb 2026, 13:18 | 6.46 | 6.46 |
| 22 Jan 2026, 10:23 | 6.09 | 6.09 |
| 4 Dec 2025, 14:28 | 5.93 | 5.93 |
| 13 Nov 2025, 15:33 | 6.2 | 6.2 |
| 14 Oct 2025, 12:40 | 6.48 | 6.48 |
| 1 Sep 2025, 12:44 | 6.9 | 6.9 |
| 2 Jun 2025, 11:31 | 7.15 | 7.15 |
| 7 May 2025, 11:25 | 6.83 | 6.83 |
| 8 Apr 2025, 13:47 | 7.25 | 7.25 |
| 10 Mar 2025, 13:52 | 6.98 | 6.98 |
| 18 Feb 2025, 16:27 | 8.47 | 8.47 |
| 22 Jan 2025, 12:28 | 7.29 | 7.29 |
| 5 Dec 2024, 09:59 | 6.33 | 6.33 |
| 14 Nov 2024, 10:48 | 7.22 | 7.22 |
| 30 Oct 2024, 08:53 | 6.66 | 6.66 |
| 3 Sep 2024, 12:42 | 7.01 | 7.01 |
| 6 Aug 2024, 14:43 | 7.18 | 7.18 |
| 11 Jul 2024, 13:26 | 7.06 | 7.06 |
| 6 Jun 2024, 14:44 | 7.38 | 7.38 |
| 1 Mar 2024, 14:36 | 6.36 | 6.36 |
| 8 Jan 2024, 14:59 | 6.46 | 6.46 |
| 7 Nov 2023, 13:51 | 6.78 | 6.78 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.021 mg/l
Sampled 3 Jun 2026, 4 months ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Jun 2026, 12:02 | 0.021 | 0.021 mg/l |
| 1 May 2026, 11:16 | 0.01 | 0.01 mg/l |
| 16 Apr 2026, 11:33 | 0.0021 | 0.0021 mg/l |
| 6 Mar 2026, 08:09 | 0.0024 | 0.0024 mg/l |
| 18 Feb 2026, 13:18 | 0.0055 | 0.0055 mg/l |
| 22 Jan 2026, 10:23 | 0.0056 | 0.0056 mg/l |
| 4 Dec 2025, 14:28 | 0.0031 | 0.0031 mg/l |
| 13 Nov 2025, 15:33 | <0.002 | below 0.002 mg/l (not detected above this) |
| 14 Oct 2025, 12:40 | <0.002 | below 0.002 mg/l (not detected above this) |
| 1 Sep 2025, 12:44 | 0.022 | 0.022 mg/l |
| 2 Jun 2025, 11:31 | 0.037 | 0.037 mg/l |
| 7 May 2025, 11:25 | 0.007 | 0.007 mg/l |
| 8 Apr 2025, 13:47 | <0.002 | below 0.002 mg/l (not detected above this) |
| 10 Mar 2025, 13:52 | 0.0073 | 0.0073 mg/l |
| 18 Feb 2025, 16:27 | 0.014 | 0.014 mg/l |
| 22 Jan 2025, 12:28 | 0.021 | 0.021 mg/l |
| 5 Dec 2024, 09:59 | 0.0056 | 0.0056 mg/l |
| 14 Nov 2024, 10:48 | 0.0042 | 0.0042 mg/l |
| 30 Oct 2024, 08:53 | 0.0093 | 0.0093 mg/l |
| 3 Sep 2024, 12:42 | 0.01 | 0.01 mg/l |
| 6 Aug 2024, 14:43 | 0.023 | 0.023 mg/l |
| 11 Jul 2024, 13:26 | 0.014 | 0.014 mg/l |
| 6 Jun 2024, 14:44 | 0.022 | 0.022 mg/l |
| 1 Mar 2024, 14:36 | 0.0081 | 0.0081 mg/l |
| 8 Jan 2024, 14:59 | 0.016 | 0.016 mg/l |
| 7 Nov 2023, 13:51 | 0.0081 | 0.0081 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.128 mg/l
Sampled 3 Jun 2026, 4 months ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Jun 2026, 12:02 | 0.128 | 0.128 mg/l |
| 1 May 2026, 11:16 | 0.011 | 0.011 mg/l |
| 16 Apr 2026, 11:33 | 0.014 | 0.014 mg/l |
| 6 Mar 2026, 08:09 | 0.035 | 0.035 mg/l |
| 18 Feb 2026, 13:18 | 0.05 | 0.05 mg/l |
| 22 Jan 2026, 10:23 | 0.109 | 0.109 mg/l |
| 4 Dec 2025, 14:28 | 0.159 | 0.159 mg/l |
| 13 Nov 2025, 15:33 | 0.179 | 0.179 mg/l |
| 14 Oct 2025, 12:40 | 0.02 | 0.02 mg/l |
| 1 Sep 2025, 12:44 | 0.148 | 0.148 mg/l |
| 2 Jun 2025, 11:31 | 0.0442 | 0.0442 mg/l |
| 7 May 2025, 11:25 | 0.0544 | 0.0544 mg/l |
| 8 Apr 2025, 13:47 | 0.0307 | 0.0307 mg/l |
| 10 Mar 2025, 13:52 | 0.082 | 0.082 mg/l |
| 18 Feb 2025, 16:27 | 0.0989 | 0.0989 mg/l |
| 22 Jan 2025, 12:28 | 0.109 | 0.109 mg/l |
| 5 Dec 2024, 09:59 | 0.0641 | 0.0641 mg/l |
| 14 Nov 2024, 10:48 | 0.0438 | 0.0438 mg/l |
| 30 Oct 2024, 08:53 | 0.0416 | 0.0416 mg/l |
| 3 Sep 2024, 12:42 | 0.0569 | 0.0569 mg/l |
| 6 Aug 2024, 14:43 | 0.0572 | 0.0572 mg/l |
| 11 Jul 2024, 13:26 | 0.0575 | 0.0575 mg/l |
| 6 Jun 2024, 14:44 | 0.0969 | 0.0969 mg/l |
| 1 Mar 2024, 14:36 | 0.07 | 0.07 mg/l |
| 8 Jan 2024, 14:59 | 0.109 | 0.109 mg/l |
| 7 Nov 2023, 13:51 | 0.08 | 0.08 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.0047 mg/l
Sampled 3 Jun 2026, 4 months ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Jun 2026, 12:02 | 0.0047 | 0.0047 mg/l |
| 1 May 2026, 11:16 | 0.0041 | 0.0041 mg/l |
| 16 Apr 2026, 11:33 | 0.002 | 0.002 mg/l |
| 6 Mar 2026, 08:09 | 0.0041 | 0.0041 mg/l |
| 18 Feb 2026, 13:18 | 0.0059 | 0.0059 mg/l |
| 22 Jan 2026, 10:23 | 0.0045 | 0.0045 mg/l |
| 4 Dec 2025, 14:28 | 0.0058 | 0.0058 mg/l |
| 13 Nov 2025, 15:33 | 0.0042 | 0.0042 mg/l |
| 14 Oct 2025, 12:40 | 0.0011 | 0.0011 mg/l |
| 1 Sep 2025, 12:44 | 0.0045 | 0.0045 mg/l |
| 2 Jun 2025, 11:31 | 0.004 | 0.004 mg/l |
| 7 May 2025, 11:25 | 0.0036 | 0.0036 mg/l |
| 8 Apr 2025, 13:47 | 0.004 | 0.004 mg/l |
| 10 Mar 2025, 13:52 | 0.0033 | 0.0033 mg/l |
| 18 Feb 2025, 16:27 | 0.0037 | 0.0037 mg/l |
| 22 Jan 2025, 12:28 | 0.0037 | 0.0037 mg/l |
| 5 Dec 2024, 09:59 | 0.011 | 0.011 mg/l |
| 14 Nov 2024, 10:48 | 0.0039 | 0.0039 mg/l |
| 30 Oct 2024, 08:53 | 0.0072 | 0.0072 mg/l |
| 3 Sep 2024, 12:42 | 0.005 | 0.005 mg/l |
| 6 Aug 2024, 14:43 | 0.0048 | 0.0048 mg/l |
| 11 Jul 2024, 13:26 | 0.0044 | 0.0044 mg/l |
| 6 Jun 2024, 14:44 | 0.0055 | 0.0055 mg/l |
| 1 Mar 2024, 14:36 | 0.0037 | 0.0037 mg/l |
| 8 Jan 2024, 14:59 | 0.0033 | 0.0033 mg/l |
| 7 Nov 2023, 13:51 | 0.0043 | 0.0043 mg/l |
Turbidity
code 6396 · NTU
4.3 NTU
Sampled 6 Mar 2026, 7 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 08:09 | 4.3 | 4.3 NTU |
| 18 Feb 2026, 13:18 | 5.1 | 5.1 NTU |
| 22 Jan 2026, 10:23 | 5.5 | 5.5 NTU |
| 4 Dec 2025, 14:28 | 17 | 17 NTU |
| 13 Nov 2025, 15:33 | 3.4 | 3.4 NTU |
| 14 Oct 2025, 12:40 | 2.2 | 2.2 NTU |
| 2 Jun 2025, 11:31 | 6.5 | 6.5 NTU |
| 7 May 2025, 11:25 | 5.7 | 5.7 NTU |
| 8 Apr 2025, 13:47 | 5.6 | 5.6 NTU |
| 10 Mar 2025, 13:52 | 6.3 | 6.3 NTU |
| 18 Feb 2025, 16:27 | 4.4 | 4.4 NTU |
| 22 Jan 2025, 12:28 | 4.1 | 4.1 NTU |
| 5 Dec 2024, 09:59 | 22 | 22 NTU |
| 14 Nov 2024, 10:48 | 6.7 | 6.7 NTU |
| 30 Oct 2024, 08:53 | 6 | 6 NTU |
| 3 Sep 2024, 12:42 | 6.7 | 6.7 NTU |
| 6 Aug 2024, 14:43 | 12 | 12 NTU |
| 11 Jul 2024, 13:26 | 7.2 | 7.2 NTU |
| 6 Jun 2024, 14:44 | 9.7 | 9.7 NTU |
| 1 May 2024, 10:09 | 6.1 | 6.1 NTU |
| 9 Apr 2024, 14:19 | 6.9 | 6.9 NTU |
Conductivity
at 25 °C · code 0077 · µS/cm
131 µS/cm
Sampled 3 Jun 2026, 4 months ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Jun 2026, 12:02 | 131 | 131 µS/cm |
| 1 May 2026, 11:16 | 131 | 131 µS/cm |
| 16 Apr 2026, 11:33 | 124 | 124 µS/cm |
| 6 Mar 2026, 08:09 | 101 | 101 µS/cm |
| 18 Feb 2026, 13:18 | 93 | 93 µS/cm |
| 22 Jan 2026, 10:23 | 104 | 104 µS/cm |
| 4 Dec 2025, 14:28 | 117 | 117 µS/cm |
| 13 Nov 2025, 15:33 | 157 | 157 µS/cm |
| 14 Oct 2025, 12:40 | 191 | 191 µS/cm |
| 1 Sep 2025, 12:44 | 161 | 161 µS/cm |
| 2 Jun 2025, 11:31 | 136 | 136 µS/cm |
| 7 May 2025, 11:25 | 143 | 143 µS/cm |
| 8 Apr 2025, 13:47 | 137 | 137 µS/cm |
| 10 Mar 2025, 13:52 | 122 | 122 µS/cm |
| 18 Feb 2025, 16:27 | 128 | 128 µS/cm |
| 22 Jan 2025, 12:28 | 121 | 121 µS/cm |
| 5 Dec 2024, 09:59 | 91 | 91 µS/cm |
| 14 Nov 2024, 10:48 | 123 | 123 µS/cm |
| 30 Oct 2024, 08:53 | 118 | 118 µS/cm |
| 3 Sep 2024, 12:42 | 146 | 146 µS/cm |
| 6 Aug 2024, 14:43 | 153 | 153 µS/cm |
| 11 Jul 2024, 13:26 | 134 | 134 µS/cm |
| 6 Jun 2024, 14:44 | 125 | 125 µS/cm |
| 1 Mar 2024, 14:36 | 80 | 80 µS/cm |
| 8 Jan 2024, 14:59 | 99 | 99 µS/cm |
| 7 Nov 2023, 13:51 | 104 | 104 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 | 26 | Nov 2023 – Jun 2026 | 91.4% 3 Jun 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 26 | Nov 2023 – Jun 2026 | 9.23 mg/l 3 Jun 2026 |
| Temperature of Water 0076 | River water | 26 | Nov 2023 – Jun 2026 | 14.8 °C 3 Jun 2026 |
| pH 0061 | River water | 26 | Nov 2023 – Jun 2026 | 6.67 3 Jun 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 26 | Nov 2023 – Jun 2026 | 0.021 mg/l 3 Jun 2026 |
| Nitrate as N 0117 | River water | 26 | Nov 2023 – Jun 2026 | 0.128 mg/l 3 Jun 2026 |
| Orthophosphate, reactive as P 0180 | River water | 26 | Nov 2023 – Jun 2026 | 0.0047 mg/l 3 Jun 2026 |
| Turbidity 6396 | River water | 21 | Apr 2024 – Mar 2026 | 4.3 NTU 6 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 26 | Nov 2023 – Jun 2026 | 131 µS/cm 3 Jun 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 25 | Nov 2023 – Jun 2026 | 14 mg/l 3 Jun 2026 |
| Ammonia un-ionised as N 0119 | River water | 26 | Nov 2023 – Jun 2026 | 0.00003 mg/l 3 Jun 2026 |
| BOD : 5 Day ATU 0085 | River water | 25 | Nov 2023 – Jun 2026 | below 3 mg/l 3 Jun 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 26 | Nov 2023 – Jun 2026 | 14 mg/l 3 Jun 2026 |
| Nitrite as N 0118 | River water | 26 | Nov 2023 – Jun 2026 | 0.0022 mg/l 3 Jun 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 26 | Nov 2023 – Jun 2026 | 0.13 mg/l 3 Jun 2026 |
| No flow /No sample 7668 | River water | 4 | Jul 2025 – Aug 2026 | No flow/discharge at sampling point 3 Aug 2026 |
| Solids, Suspended at 105 C 0135 | River water | 26 | Nov 2023 – Jun 2026 | 8.1 mg/l 3 Jun 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.