Isfield
EA name: ISFIELD
Environment Agency sampling point SO-F0017601 · 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
- 27 May 2026, 12:194 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
- 29 since 11 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 544452, 117370As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- River OusePlaced by position alone, on a line whose map name differs from its own, 3 m from the line.
- Next gauge downstream
- Anchor Gates On the River Ouse · 1.6 km along the river
- Nearest gauge upstream
- Isfield weir On the River Uck · 3.8 km along the riverGoldbridge On the River Ouse · 6.7 km along the river
- Why it was sampled
- Monitoring (national agency policy) (29 samples)
1 visit found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
92.5%
Sampled 27 May 2026, 4 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 12:19 | 92.5 | 92.5% |
| 20 Apr 2026, 13:45 | 101.7 | 101.7% |
| 4 Mar 2026, 10:28 | 97.3 | 97.3% |
| 12 Feb 2026, 14:07 | 100.5 | 100.5% |
| 4 Dec 2025, 14:45 | 95.2 | 95.2% |
| 5 Nov 2025, 10:55 | 95.3 | 95.3% |
| 3 Oct 2025, 11:10 | 90.5 | 90.5% |
| 3 Sep 2025, 10:25 | 90 | 90% |
| 8 Aug 2025, 14:07 | 94.9 | 94.9% |
| 18 Jul 2025, 13:09 | 91.8 | 91.8% |
| 10 Jun 2025, 11:40 | 93.4 | 93.4% |
| 1 May 2025, 13:21 | 103.3 | 103.3% |
| 1 Apr 2025, 14:35 | 106.9 | 106.9% |
| 6 Mar 2025, 11:58 | 102 | 102% |
| 18 Feb 2025, 13:43 | 101.1 | 101.1% |
| 28 Jan 2025, 12:17 | 95.7 | 95.7% |
| 5 Dec 2024, 14:40 | 96.8 | 96.8% |
| 27 Nov 2024, 12:19 | 93.3 | 93.3% |
| 25 Oct 2024, 11:53 | 100.4 | 100.4% |
| 20 Sep 2024, 11:30 | 90.1 | 90.1% |
| 28 Aug 2024, 12:49 | 95.2 | 95.2% |
| 29 Jul 2024, 13:56 | 97.4 | 97.4% |
| 15 Jul 2024, 10:46 | 94.1 | 94.1% |
| 16 Feb 2024, 13:28 | 95.7 | 95.7% |
| 18 Jan 2024, 13:35 | 98 | 98% |
| 11 Dec 2023, 12:30 | 86.1 | 86.1% |
| 24 Nov 2023, 11:02 | 93.5 | 93.5% |
| 11 Oct 2023, 13:35 | 91.3 | 91.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.52 mg/l
Sampled 27 May 2026, 4 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 12:19 | 8.52 | 8.52 mg/l |
| 20 Apr 2026, 13:45 | 10.8 | 10.8 mg/l |
| 4 Mar 2026, 10:28 | 11.3 | 11.3 mg/l |
| 12 Feb 2026, 14:07 | 11.5 | 11.5 mg/l |
| 4 Dec 2025, 14:45 | 11.3 | 11.3 mg/l |
| 5 Nov 2025, 10:55 | 10.1 | 10.1 mg/l |
| 3 Oct 2025, 11:10 | 9.58 | 9.58 mg/l |
| 3 Sep 2025, 10:25 | 8.73 | 8.73 mg/l |
| 8 Aug 2025, 14:07 | 9.11 | 9.11 mg/l |
| 18 Jul 2025, 13:09 | 8.36 | 8.36 mg/l |
| 10 Jun 2025, 11:40 | 9.33 | 9.33 mg/l |
| 1 May 2025, 13:21 | 10.2 | 10.2 mg/l |
| 1 Apr 2025, 14:35 | 11.7 | 11.7 mg/l |
| 6 Mar 2025, 11:58 | 12.6 | 12.6 mg/l |
| 18 Feb 2025, 13:43 | 13.1 | 13.1 mg/l |
| 28 Jan 2025, 12:17 | 11.5 | 11.5 mg/l |
| 5 Dec 2024, 14:40 | 11 | 11 mg/l |
| 27 Nov 2024, 12:19 | 10.7 | 10.7 mg/l |
| 25 Oct 2024, 11:53 | 10.6 | 10.6 mg/l |
| 20 Sep 2024, 11:30 | 8.83 | 8.83 mg/l |
| 28 Aug 2024, 12:49 | 9.18 | 9.18 mg/l |
| 29 Jul 2024, 13:56 | 9.12 | 9.12 mg/l |
| 15 Jul 2024, 10:46 | 9.34 | 9.34 mg/l |
| 16 Feb 2024, 13:28 | 10.7 | 10.7 mg/l |
| 18 Jan 2024, 13:35 | 13 | 13 mg/l |
| 11 Dec 2023, 12:30 | 10 | 10 mg/l |
| 24 Nov 2023, 11:02 | 10.7 | 10.7 mg/l |
| 11 Oct 2023, 13:35 | 9.14 | 9.14 mg/l |
Water temperature
code 0076 · °C
19.2 °C
Sampled 27 May 2026, 4 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 12:19 | 19.2 | 19.2 °C |
| 20 Apr 2026, 13:45 | 12.4 | 12.4 °C |
| 4 Mar 2026, 10:28 | 8.6 | 8.6 °C |
| 12 Feb 2026, 14:07 | 9.3 | 9.3 °C |
| 4 Dec 2025, 14:45 | 8 | 8 °C |
| 5 Nov 2025, 10:55 | 12.7 | 12.7 °C |
| 3 Oct 2025, 11:10 | 12.7 | 12.7 °C |
| 3 Sep 2025, 10:25 | 16.7 | 16.7 °C |
| 8 Aug 2025, 14:07 | 17.2 | 17.2 °C |
| 18 Jul 2025, 13:09 | 19.8 | 19.8 °C |
| 10 Jun 2025, 11:40 | 15.3 | 15.3 °C |
| 1 May 2025, 13:21 | 16 | 16 °C |
| 1 Apr 2025, 14:35 | 11.3 | 11.3 °C |
| 6 Mar 2025, 11:58 | 6.3 | 6.3 °C |
| 18 Feb 2025, 13:43 | 4.5 | 4.5 °C |
| 28 Jan 2025, 12:17 | 7.5 | 7.5 °C |
| 5 Dec 2024, 14:40 | 9.7 | 9.7 °C |
| 27 Nov 2024, 12:19 | 9.1 | 9.1 °C |
| 25 Oct 2024, 11:53 | 13 | 13 °C |
| 20 Sep 2024, 11:30 | 16.2 | 16.2 °C |
| 28 Aug 2024, 12:49 | 17 | 17 °C |
| 29 Jul 2024, 13:56 | 18.4 | 18.4 °C |
| 15 Jul 2024, 10:46 | 15.6 | 15.6 °C |
| 16 Feb 2024, 13:28 | 10.2 | 10.2 °C |
| 18 Jan 2024, 13:35 | 3.4 | 3.4 °C |
| 11 Dec 2023, 12:30 | 8.7 | 8.7 °C |
| 24 Nov 2023, 11:02 | 9.2 | 9.2 °C |
| 11 Oct 2023, 13:35 | 15.2 | 15.2 °C |
pH
code 0061
7.72
Sampled 27 May 2026, 4 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 12:19 | 7.72 | 7.72 |
| 20 Apr 2026, 13:45 | 8.01 | 8.01 |
| 4 Mar 2026, 10:28 | 7.73 | 7.73 |
| 12 Feb 2026, 14:07 | 7.51 | 7.51 |
| 4 Dec 2025, 14:45 | 7.36 | 7.36 |
| 5 Nov 2025, 10:55 | 7.53 | 7.53 |
| 3 Oct 2025, 11:10 | 7.47 | 7.47 |
| 3 Sep 2025, 10:25 | 7.56 | 7.56 |
| 8 Aug 2025, 14:07 | 7.65 | 7.65 |
| 18 Jul 2025, 13:09 | 7.69 | 7.69 |
| 10 Jun 2025, 11:40 | 7.65 | 7.65 |
| 1 May 2025, 13:21 | 7.66 | 7.66 |
| 1 Apr 2025, 14:35 | 7.87 | 7.87 |
| 6 Mar 2025, 11:58 | 7.65 | 7.65 |
| 18 Feb 2025, 13:43 | 7.64 | 7.64 |
| 28 Jan 2025, 12:17 | 7.42 | 7.42 |
| 5 Dec 2024, 14:40 | 7.29 | 7.29 |
| 27 Nov 2024, 12:19 | 7.38 | 7.38 |
| 25 Oct 2024, 11:53 | 7.66 | 7.66 |
| 20 Sep 2024, 11:30 | 7.61 | 7.61 |
| 28 Aug 2024, 12:49 | 7.56 | 7.56 |
| 29 Jul 2024, 13:56 | 7.63 | 7.63 |
| 15 Jul 2024, 10:46 | 7.65 | 7.65 |
| 16 Feb 2024, 13:28 | 7.41 | 7.41 |
| 18 Jan 2024, 13:35 | 7.61 | 7.61 |
| 11 Dec 2023, 12:30 | 7.32 | 7.32 |
| 24 Nov 2023, 11:02 | 7.55 | 7.55 |
| 11 Oct 2023, 13:35 | 8 | 8 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.056 mg/l
Sampled 27 May 2026, 4 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 12:19 | 0.056 | 0.056 mg/l |
| 20 Apr 2026, 13:45 | 0.011 | 0.011 mg/l |
| 4 Mar 2026, 10:28 | 0.069 | 0.069 mg/l |
| 12 Feb 2026, 14:07 | 0.063 | 0.063 mg/l |
| 4 Dec 2025, 14:45 | 0.059 | 0.059 mg/l |
| 5 Nov 2025, 10:55 | 0.023 | 0.023 mg/l |
| 3 Oct 2025, 11:10 | 0.059 | 0.059 mg/l |
| 3 Sep 2025, 10:25 | 0.055 | 0.055 mg/l |
| 8 Aug 2025, 14:07 | 0.048 | 0.048 mg/l |
| 10 Jun 2025, 11:40 | 0.043 | 0.043 mg/l |
| 1 May 2025, 13:21 | 0.023 | 0.023 mg/l |
| 1 Apr 2025, 14:35 | <0.002 | below 0.002 mg/l (not detected above this) |
| 6 Mar 2025, 11:58 | 0.042 | 0.042 mg/l |
| 18 Feb 2025, 13:43 | 0.051 | 0.051 mg/l |
| 28 Jan 2025, 12:17 | 0.046 | 0.046 mg/l |
| 5 Dec 2024, 14:40 | 0.038 | 0.038 mg/l |
| 27 Nov 2024, 12:19 | 0.05 | 0.05 mg/l |
| 25 Oct 2024, 11:53 | 0.021 | 0.021 mg/l |
| 20 Sep 2024, 11:30 | 0.016 | 0.016 mg/l |
| 28 Aug 2024, 12:49 | 0.017 | 0.017 mg/l |
| 29 Jul 2024, 13:56 | 0.021 | 0.021 mg/l |
| 15 Jul 2024, 10:46 | 0.023 | 0.023 mg/l |
| 16 Feb 2024, 13:28 | 0.046 | 0.046 mg/l |
| 18 Jan 2024, 13:35 | 0.16 | 0.16 mg/l |
| 11 Dec 2023, 12:30 | 1.6 | 1.6 mg/l |
| 24 Nov 2023, 11:02 | 0.074 | 0.074 mg/l |
| 11 Oct 2023, 13:35 | 0.16 | 0.16 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
5.26 mg/l
Sampled 27 May 2026, 4 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 12:19 | 5.26 | 5.26 mg/l |
| 20 Apr 2026, 13:45 | 4.98 | 4.98 mg/l |
| 4 Mar 2026, 10:28 | 2.57 | 2.57 mg/l |
| 12 Feb 2026, 14:07 | 2.18 | 2.18 mg/l |
| 4 Dec 2025, 14:45 | 2.87 | 2.87 mg/l |
| 5 Nov 2025, 10:55 | 3.58 | 3.58 mg/l |
| 3 Oct 2025, 11:10 | 5.15 | 5.15 mg/l |
| 3 Sep 2025, 10:25 | 4.77 | 4.77 mg/l |
| 8 Aug 2025, 14:07 | 3.19 | 3.19 mg/l |
| 10 Jun 2025, 11:40 | 4.17 | 4.17 mg/l |
| 1 May 2025, 13:21 | 4.58 | 4.58 mg/l |
| 1 Apr 2025, 14:35 | 4.38 | 4.38 mg/l |
| 6 Mar 2025, 11:58 | 3.18 | 3.18 mg/l |
| 18 Feb 2025, 13:43 | 3.37 | 3.37 mg/l |
| 28 Jan 2025, 12:17 | 2.18 | 2.18 mg/l |
| 5 Dec 2024, 14:40 | 1.88 | 1.88 mg/l |
| 27 Nov 2024, 12:19 | 1.29 | 1.29 mg/l |
| 25 Oct 2024, 11:53 | 2.48 | 2.48 mg/l |
| 20 Sep 2024, 11:30 | 4.28 | 4.28 mg/l |
| 28 Aug 2024, 12:49 | 3.89 | 3.89 mg/l |
| 29 Jul 2024, 13:56 | 4.48 | 4.48 mg/l |
| 15 Jul 2024, 10:46 | 4.28 | 4.28 mg/l |
| 16 Feb 2024, 13:28 | 2.08 | 2.08 mg/l |
| 18 Jan 2024, 13:35 | 3.36 | 3.36 mg/l |
| 11 Dec 2023, 12:30 | 1.78 | 1.78 mg/l |
| 24 Nov 2023, 11:02 | 2.86 | 2.86 mg/l |
| 11 Oct 2023, 13:35 | 4.26 | 4.26 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.041 mg/l
Sampled 27 May 2026, 4 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 12:19 | 0.041 | 0.041 mg/l |
| 20 Apr 2026, 13:45 | 0.021 | 0.021 mg/l |
| 4 Mar 2026, 10:28 | 0.042 | 0.042 mg/l |
| 12 Feb 2026, 14:07 | 0.053 | 0.053 mg/l |
| 4 Dec 2025, 14:45 | 0.072 | 0.072 mg/l |
| 5 Nov 2025, 10:55 | 0.048 | 0.048 mg/l |
| 3 Oct 2025, 11:10 | 0.022 | 0.022 mg/l |
| 3 Sep 2025, 10:25 | 0.051 | 0.051 mg/l |
| 8 Aug 2025, 14:07 | 0.033 | 0.033 mg/l |
| 10 Jun 2025, 11:40 | 0.052 | 0.052 mg/l |
| 1 May 2025, 13:21 | 0.033 | 0.033 mg/l |
| 1 Apr 2025, 14:35 | 0.028 | 0.028 mg/l |
| 6 Mar 2025, 11:58 | 0.033 | 0.033 mg/l |
| 18 Feb 2025, 13:43 | 0.023 | 0.023 mg/l |
| 28 Jan 2025, 12:17 | 0.061 | 0.061 mg/l |
| 5 Dec 2024, 14:40 | 0.074 | 0.074 mg/l |
| 27 Nov 2024, 12:19 | 0.043 | 0.043 mg/l |
| 25 Oct 2024, 11:53 | 0.055 | 0.055 mg/l |
| 20 Sep 2024, 11:30 | 0.071 | 0.071 mg/l |
| 28 Aug 2024, 12:49 | 0.069 | 0.069 mg/l |
| 29 Jul 2024, 13:56 | 0.12 | 0.12 mg/l |
| 15 Jul 2024, 10:46 | 0.095 | 0.095 mg/l |
| 16 Feb 2024, 13:28 | 0.034 | 0.034 mg/l |
| 18 Jan 2024, 13:35 | 0.029 | 0.029 mg/l |
| 11 Dec 2023, 12:30 | 0.35 | 0.35 mg/l |
| 24 Nov 2023, 11:02 | 0.033 | 0.033 mg/l |
| 11 Oct 2023, 13:35 | 0.092 | 0.092 mg/l |
Turbidity
code 6396 · NTU
26 NTU
Sampled 16 Feb 2024, 2.6 years ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Feb 2024, 13:28 | 26 | 26 NTU |
| 18 Jan 2024, 13:35 | 9.6 | 9.6 NTU |
| 11 Dec 2023, 12:30 | 50 | 50 NTU |
| 24 Nov 2023, 11:02 | 8.7 | 8.7 NTU |
| 11 Oct 2023, 13:35 | 4.2 | 4.2 NTU |
Conductivity
at 25 °C · code 0077 · µS/cm
419 µS/cm
Sampled 27 May 2026, 4 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 12:19 | 419 | 419 µS/cm |
| 20 Apr 2026, 13:45 | 380 | 380 µS/cm |
| 4 Mar 2026, 10:28 | 289 | 289 µS/cm |
| 12 Feb 2026, 14:07 | 250 | 250 µS/cm |
| 4 Dec 2025, 14:45 | 287 | 287 µS/cm |
| 5 Nov 2025, 10:55 | 343 | 343 µS/cm |
| 3 Oct 2025, 11:10 | 457 | 457 µS/cm |
| 3 Sep 2025, 10:25 | 416 | 416 µS/cm |
| 8 Aug 2025, 14:07 | 365 | 365 µS/cm |
| 18 Jul 2025, 13:09 | 355 | 355 µS/cm |
| 10 Jun 2025, 11:40 | 381 | 381 µS/cm |
| 1 May 2025, 13:21 | 374 | 374 µS/cm |
| 1 Apr 2025, 14:35 | 357 | 357 µS/cm |
| 6 Mar 2025, 11:58 | 314 | 314 µS/cm |
| 18 Feb 2025, 13:43 | 326 | 326 µS/cm |
| 28 Jan 2025, 12:17 | 249 | 249 µS/cm |
| 5 Dec 2024, 14:40 | 257 | 257 µS/cm |
| 27 Nov 2024, 12:19 | 185 | 185 µS/cm |
| 25 Oct 2024, 11:53 | 297 | 297 µS/cm |
| 20 Sep 2024, 11:30 | 376 | 376 µS/cm |
| 28 Aug 2024, 12:49 | 352 | 352 µS/cm |
| 29 Jul 2024, 13:56 | 387 | 387 µS/cm |
| 15 Jul 2024, 10:46 | 369 | 369 µS/cm |
| 16 Feb 2024, 13:28 | 254 | 254 µS/cm |
| 18 Jan 2024, 13:35 | 313 | 313 µS/cm |
| 11 Dec 2023, 12:30 | 264 | 264 µS/cm |
| 24 Nov 2023, 11:02 | 303 | 303 µS/cm |
| 11 Oct 2023, 13:35 | 415 | 415 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 | 28 | Oct 2023 – May 2026 | 92.5% 27 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 28 | Oct 2023 – May 2026 | 8.52 mg/l 27 May 2026 |
| Temperature of Water 0076 | River water | 28 | Oct 2023 – May 2026 | 19.2 °C 27 May 2026 |
| pH 0061 | River water | 28 | Oct 2023 – May 2026 | 7.72 27 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 27 | Oct 2023 – May 2026 | 0.056 mg/l 27 May 2026 |
| Nitrate as N 0117 | River water | 27 | Oct 2023 – May 2026 | 5.26 mg/l 27 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 27 | Oct 2023 – May 2026 | 0.041 mg/l 27 May 2026 |
| Turbidity 6396 | River water | 5 | Oct 2023 – Feb 2024 | 26 NTU 16 Feb 2024 |
| Conductivity at 25 C 0077 | River water | 28 | Oct 2023 – May 2026 | 419 µS/cm 27 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 28 | Oct 2023 – May 2026 | 68 mg/l 27 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 27 | Oct 2023 – May 2026 | 0.00106 mg/l 27 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 23 | Jul 2024 – May 2026 | below 1 mg/l 27 May 2026 |
| Chlorophyll : Acetone Extract 7887 | River water | 5 | Oct 2023 – Feb 2024 | 2.5 µg/l 16 Feb 2024 |
| Nitrite as N 0118 | River water | 27 | Oct 2023 – May 2026 | 0.038 mg/l 27 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 27 | Oct 2023 – May 2026 | 5.3 mg/l 27 May 2026 |
| No flow /No sample 7668 | River water | 1 | Jan 2026 – Jan 2026 | No flow/discharge at sampling point 16 Jan 2026 |
| Solids, Suspended at 105 C 0135 | River water | 5 | Oct 2023 – Feb 2024 | 31 mg/l 16 Feb 2024 |
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.