Cuckmere Grove Hill Cuckoo Trail
EA name: CUCKMERE GROVE HILL CUCKOO TRAIL (also listed as “RSN0457 CUCKMERE GROVE HILL CUCKOO TRAIL”)
Environment Agency sampling point SO-RSN0457 · 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
- 18 Aug 2026, 09:4551 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 18 since 14 Jan 2025 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 559393, 114553As published, to the nearest 1 m. Open in a map
- River, by its own name
- Cuckmere
- River, by the map
- Cuckmere RiverPlaced on the river its name gives, 6 m from the line.
- Next gauge downstream
- SHERMAN BRIDGE GS 16 km along the river
- Nearest gauge upstream
- COWBEECH GS 2.3 km along the riverCowbeech On the River Cuckmere · 2.3 km along the river
- Why it was sampled
- Monitoring (national agency policy) (18 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
81.5%
Sampled 18 Aug 2026, 51 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:45 | 81.5 | 81.5% |
| 7 Jul 2026, 08:46 | 82.1 | 82.1% |
| 8 Jun 2026, 11:15 | 85.6 | 85.6% |
| 5 May 2026, 11:09 | 93.7 | 93.7% |
| 24 Apr 2026, 13:06 | 105.9 | 105.9% |
| 5 Mar 2026, 11:51 | 96.7 | 96.7% |
| 9 Feb 2026, 11:19 | 99.9 | 99.9% |
| 5 Dec 2025, 12:55 | 94.3 | 94.3% |
| 3 Nov 2025, 12:45 | 93.5 | 93.5% |
| 8 Oct 2025, 12:09 | 80.6 | 80.6% |
| 5 Sep 2025, 12:35 | 88.2 | 88.2% |
| 21 Jul 2025, 12:27 | 87 | 87% |
| 2 Jun 2025, 09:39 | 83.3 | 83.3% |
| 1 May 2025, 09:47 | 90.2 | 90.2% |
| 7 Apr 2025, 09:40 | 95.7 | 95.7% |
| 19 Mar 2025, 10:46 | 100.6 | 100.6% |
| 24 Feb 2025, 14:38 | 96.5 | 96.5% |
| 14 Jan 2025, 15:36 | 96.4 | 96.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.64 mg/l
Sampled 18 Aug 2026, 51 days ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:45 | 7.64 | 7.64 mg/l |
| 7 Jul 2026, 08:46 | 7.89 | 7.89 mg/l |
| 8 Jun 2026, 11:15 | 8.72 | 8.72 mg/l |
| 5 May 2026, 11:09 | 9.71 | 9.71 mg/l |
| 24 Apr 2026, 13:06 | 11.3 | 11.3 mg/l |
| 5 Mar 2026, 11:51 | 11.1 | 11.1 mg/l |
| 9 Feb 2026, 11:19 | 11.7 | 11.7 mg/l |
| 5 Dec 2025, 12:55 | 11.5 | 11.5 mg/l |
| 3 Nov 2025, 12:45 | 10.1 | 10.1 mg/l |
| 5 Sep 2025, 12:35 | 8.87 | 8.87 mg/l |
| 21 Jul 2025, 12:27 | 8.3 | 8.3 mg/l |
| 2 Jun 2025, 09:39 | 8.56 | 8.56 mg/l |
| 1 May 2025, 09:47 | 9.54 | 9.54 mg/l |
| 7 Apr 2025, 09:40 | 11.2 | 11.2 mg/l |
| 19 Mar 2025, 10:46 | 12.3 | 12.3 mg/l |
| 24 Feb 2025, 14:38 | 10.9 | 10.9 mg/l |
| 14 Jan 2025, 15:36 | 12.3 | 12.3 mg/l |
Water temperature
code 0076 · °C
18.3 °C
Sampled 18 Aug 2026, 51 days ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:45 | 18.3 | 18.3 °C |
| 7 Jul 2026, 08:46 | 17.1 | 17.1 °C |
| 8 Jun 2026, 11:15 | 14.4 | 14.4 °C |
| 5 May 2026, 11:09 | 13.6 | 13.6 °C |
| 24 Apr 2026, 13:06 | 12.5 | 12.5 °C |
| 5 Mar 2026, 11:51 | 9.1 | 9.1 °C |
| 9 Feb 2026, 11:19 | 8.5 | 8.5 °C |
| 5 Dec 2025, 12:55 | 6.6 | 6.6 °C |
| 3 Nov 2025, 12:45 | 11.6 | 11.6 °C |
| 5 Sep 2025, 12:35 | 15 | 15 °C |
| 21 Jul 2025, 12:27 | 17.5 | 17.5 °C |
| 2 Jun 2025, 09:39 | 14 | 14 °C |
| 1 May 2025, 09:47 | 12.7 | 12.7 °C |
| 7 Apr 2025, 09:40 | 8.4 | 8.4 °C |
| 19 Mar 2025, 10:46 | 6.5 | 6.5 °C |
| 24 Feb 2025, 14:38 | 9.8 | 9.8 °C |
| 14 Jan 2025, 15:36 | 5 | 5 °C |
pH
code 0061
7.26
Sampled 18 Aug 2026, 51 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:45 | 7.26 | 7.26 |
| 7 Jul 2026, 08:46 | 8.07 | 8.07 |
| 8 Jun 2026, 11:15 | 7.77 | 7.77 |
| 5 May 2026, 11:09 | 7.16 | 7.16 |
| 24 Apr 2026, 13:06 | 7.84 | 7.84 |
| 5 Mar 2026, 11:51 | 7.33 | 7.33 |
| 9 Feb 2026, 11:19 | 7.32 | 7.32 |
| 5 Dec 2025, 12:55 | 7.21 | 7.21 |
| 3 Nov 2025, 12:45 | 7.24 | 7.24 |
| 8 Oct 2025, 12:09 | 7.57 | 7.57 |
| 5 Sep 2025, 12:35 | 7.32 | 7.32 |
| 21 Jul 2025, 12:27 | 7.05 | 7.05 |
| 2 Jun 2025, 09:39 | 7.37 | 7.37 |
| 1 May 2025, 09:47 | 7.27 | 7.27 |
| 7 Apr 2025, 09:40 | 7.32 | 7.32 |
| 19 Mar 2025, 10:46 | 7.37 | 7.37 |
| 24 Feb 2025, 14:38 | 7.29 | 7.29 |
| 14 Jan 2025, 15:36 | 7.2 | 7.2 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 18 Aug 2026, 51 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Jul 2026, 08:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Jun 2026, 11:15 | 0.03 | 0.03 mg/l |
| 5 May 2026, 11:09 | 0.32 | 0.32 mg/l |
| 24 Apr 2026, 13:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Mar 2026, 11:51 | 0.049 | 0.049 mg/l |
| 9 Feb 2026, 11:19 | 0.033 | 0.033 mg/l |
| 5 Dec 2025, 12:55 | 0.03 | 0.03 mg/l |
| 3 Nov 2025, 12:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Oct 2025, 12:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Sep 2025, 12:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Jul 2025, 12:27 | 0.34 | 0.34 mg/l |
| 2 Jun 2025, 09:39 | 0.053 | 0.053 mg/l |
| 1 May 2025, 09:47 | 0.045 | 0.045 mg/l |
| 7 Apr 2025, 09:40 | 0.041 | 0.041 mg/l |
| 19 Mar 2025, 10:46 | 0.053 | 0.053 mg/l |
| 24 Feb 2025, 14:38 | 0.18 | 0.18 mg/l |
| 14 Jan 2025, 15:36 | 0.11 | 0.11 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
7.99 mg/l
Sampled 18 Aug 2026, 51 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:45 | 7.99 | 7.99 mg/l |
| 7 Jul 2026, 08:46 | 13 | 13 mg/l |
| 8 Jun 2026, 11:15 | 5.98 | 5.98 mg/l |
| 5 May 2026, 11:09 | 8.24 | 8.24 mg/l |
| 24 Apr 2026, 13:06 | 5.48 | 5.48 mg/l |
| 5 Mar 2026, 11:51 | 3.09 | 3.09 mg/l |
| 9 Feb 2026, 11:19 | 1.99 | 1.99 mg/l |
| 5 Dec 2025, 12:55 | 2.09 | 2.09 mg/l |
| 3 Nov 2025, 12:45 | 2.49 | 2.49 mg/l |
| 8 Oct 2025, 12:09 | 7.77 | 7.77 mg/l |
| 5 Sep 2025, 12:35 | 5.89 | 5.89 mg/l |
| 21 Jul 2025, 12:27 | 4.04 | 4.04 mg/l |
| 2 Jun 2025, 09:39 | 0.815 | 0.815 mg/l |
| 1 May 2025, 09:47 | 6.97 | 6.97 mg/l |
| 7 Apr 2025, 09:40 | 7.57 | 7.57 mg/l |
| 19 Mar 2025, 10:46 | 5.37 | 5.37 mg/l |
| 24 Feb 2025, 14:38 | 1.18 | 1.18 mg/l |
| 14 Jan 2025, 15:36 | 3.26 | 3.26 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.23 mg/l
Sampled 18 Aug 2026, 51 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:45 | 0.23 | 0.23 mg/l |
| 7 Jul 2026, 08:46 | 0.17 | 0.17 mg/l |
| 8 Jun 2026, 11:15 | 0.14 | 0.14 mg/l |
| 5 May 2026, 11:09 | 0.15 | 0.15 mg/l |
| 24 Apr 2026, 13:06 | 0.054 | 0.054 mg/l |
| 5 Mar 2026, 11:51 | 0.064 | 0.064 mg/l |
| 9 Feb 2026, 11:19 | 0.066 | 0.066 mg/l |
| 5 Dec 2025, 12:55 | 0.074 | 0.074 mg/l |
| 3 Nov 2025, 12:45 | 0.12 | 0.12 mg/l |
| 8 Oct 2025, 12:09 | 0.49 | 0.49 mg/l |
| 5 Sep 2025, 12:35 | 0.43 | 0.43 mg/l |
| 21 Jul 2025, 12:27 | 0.18 | 0.18 mg/l |
| 2 Jun 2025, 09:39 | 0.045 | 0.045 mg/l |
| 1 May 2025, 09:47 | 0.16 | 0.16 mg/l |
| 7 Apr 2025, 09:40 | 0.076 | 0.076 mg/l |
| 19 Mar 2025, 10:46 | 0.09 | 0.09 mg/l |
| 24 Feb 2025, 14:38 | 0.1 | 0.1 mg/l |
| 14 Jan 2025, 15:36 | 0.078 | 0.078 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
506 µS/cm
Sampled 18 Aug 2026, 51 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:45 | 506 | 506 µS/cm |
| 7 Jul 2026, 08:46 | 603 | 603 µS/cm |
| 8 Jun 2026, 11:15 | 334 | 334 µS/cm |
| 5 May 2026, 11:09 | 400 | 400 µS/cm |
| 24 Apr 2026, 13:06 | 333 | 333 µS/cm |
| 5 Mar 2026, 11:51 | 272 | 272 µS/cm |
| 9 Feb 2026, 11:19 | 232 | 232 µS/cm |
| 5 Dec 2025, 12:55 | 251 | 251 µS/cm |
| 3 Nov 2025, 12:45 | 279 | 279 µS/cm |
| 8 Oct 2025, 12:09 | 450 | 450 µS/cm |
| 5 Sep 2025, 12:35 | 342 | 342 µS/cm |
| 21 Jul 2025, 12:27 | 269 | 269 µS/cm |
| 2 Jun 2025, 09:39 | 303 | 303 µS/cm |
| 1 May 2025, 09:47 | 370 | 370 µS/cm |
| 7 Apr 2025, 09:40 | 371 | 371 µS/cm |
| 19 Mar 2025, 10:46 | 335 | 335 µS/cm |
| 24 Feb 2025, 14:38 | 178 | 178 µS/cm |
| 14 Jan 2025, 15:36 | 305 | 305 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 | 18 | Jan 2025 – Aug 2026 | 81.5% 18 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 17 | Jan 2025 – Aug 2026 | 7.64 mg/l 18 Aug 2026 |
| Temperature of Water 0076 | River water | 17 | Jan 2025 – Aug 2026 | 18.3 °C 18 Aug 2026 |
| pH 0061 | River water | 18 | Jan 2025 – Aug 2026 | 7.26 18 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 18 | Jan 2025 – Aug 2026 | below 0.03 mg/l 18 Aug 2026 |
| Nitrate as N 0117 | River water | 18 | Jan 2025 – Aug 2026 | 7.99 mg/l 18 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 18 | Jan 2025 – Aug 2026 | 0.23 mg/l 18 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 18 | Jan 2025 – Aug 2026 | 506 µS/cm 18 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 18 | Jan 2025 – Aug 2026 | 51 mg/l 18 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 17 | Jan 2025 – Aug 2026 | below 0.00019 mg/l 18 Aug 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 16 | Jan 2025 – Aug 2026 | 4 mg/l 18 Aug 2026 |
| Chloride 0172 | River water | 18 | Jan 2025 – Aug 2026 | 63 mg/l 18 Aug 2026 |
| Flow Type 2896 | River water | 9 | Jan 2025 – Jul 2026 | Moderate Flow 7 Jul 2026 |
| LCMS Screen : Semi Quantitative 7299 | River water | 1 | Jul 2026 – Jul 2026 | 1 text result 7 Jul 2026 |
| Nitrite as N 0118 | River water | 18 | Jan 2025 – Aug 2026 | 0.0094 mg/l 18 Aug 2026 |
| Nitrogen, Total as N 9686 | River water | 18 | Jan 2025 – Aug 2026 | 8.7 mg/l 18 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 18 | Jan 2025 – Aug 2026 | 8 mg/l 18 Aug 2026 |
| Phosphorus, Total as P 0348 | River water | 18 | Jan 2025 – Aug 2026 | 0.26 mg/l 18 Aug 2026 |
| Silica, reactive as SiO2 0182 | River water | 18 | Jan 2025 – Aug 2026 | 13 mg/l 18 Aug 2026 |
| Solids, Suspended at 105 C 0135 | River water | 8 | Dec 2025 – Aug 2026 | 4 mg/l 18 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.