River Arun tributary of Farthings Bridge
EA name: R ARUN TRIB FARTHINGS BRIDGE (also listed as “RIVER ARUN TRIBUTARY BOLDINGS BROOK AT FARTHINGS BRIDGE”)
Environment Agency sampling point SO-F0003252 · 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
- 28 May 2026, 09:284 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
- 31 since 27 Jun 2024 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 515900, 130910As published, to the nearest 10 m. Open in a map
- River, by its own name
- tributary of Boldings Brook
- River, by the map
- Boldings BrookOn an unmapped tributary: placed where it joins the river its name gives, 9 m from the line.
- Next gauge downstream
- Alfoldean On the River Arun · 9.3 km along the river
- Why it was sampled
- Monitoring (national agency policy) (31 samples)
1 visit found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
47.4%
Sampled 28 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 09:28 | 47.4 | 47.4% |
| 14 May 2026, 11:23 | 86.1 | 86.1% |
| 21 Apr 2026, 13:03 | 92.2 | 92.2% |
| 9 Apr 2026, 12:40 | 102.6 | 102.6% |
| 23 Mar 2026, 13:10 | 126.3 | 126.3% |
| 13 Mar 2026, 11:02 | 97.9 | 97.9% |
| 24 Feb 2026, 14:11 | 97.2 | 97.2% |
| 6 Feb 2026, 11:12 | 102 | 102% |
| 19 Jan 2026, 13:09 | 102.6 | 102.6% |
| 7 Jan 2026, 14:00 | 97.1 | 97.1% |
| 16 Dec 2025, 12:18 | 95 | 95% |
| 2 Dec 2025, 12:23 | 96.6 | 96.6% |
| 19 Nov 2025, 12:29 | 94.6 | 94.6% |
| 5 Nov 2025, 10:50 | 94.2 | 94.2% |
| 3 Sep 2025, 14:04 | 91.6 | 91.6% |
| 4 Aug 2025, 10:32 | 78.4 | 78.4% |
| 3 Jun 2025, 11:09 | 73.1 | 73.1% |
| 6 May 2025, 11:12 | 71.5 | 71.5% |
| 1 Apr 2025, 14:52 | 134.6 | 134.6% |
| 7 Mar 2025, 13:04 | 111 | 111% |
| 14 Feb 2025, 10:48 | 99.8 | 99.8% |
| 31 Jan 2025, 12:31 | 99.8 | 99.8% |
| 6 Dec 2024, 12:41 | 95.1 | 95.1% |
| 21 Nov 2024, 13:34 | 95.7 | 95.7% |
| 25 Oct 2024, 11:48 | 93.9 | 93.9% |
| 20 Sep 2024, 13:23 | 76.6 | 76.6% |
| 22 Aug 2024, 11:42 | 70.3 | 70.3% |
| 15 Jul 2024, 10:32 | 82.7 | 82.7% |
| 27 Jun 2024, 11:34 | 69.4 | 69.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
4.48 mg/l
Sampled 28 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 09:28 | 4.48 | 4.48 mg/l |
| 14 May 2026, 11:23 | 9.45 | 9.45 mg/l |
| 21 Apr 2026, 13:03 | 9.96 | 9.96 mg/l |
| 9 Apr 2026, 12:40 | 10.6 | 10.6 mg/l |
| 23 Mar 2026, 13:10 | 14.3 | 14.3 mg/l |
| 13 Mar 2026, 11:02 | 11.2 | 11.2 mg/l |
| 24 Feb 2026, 14:11 | 10.9 | 10.9 mg/l |
| 6 Feb 2026, 11:12 | 11.9 | 11.9 mg/l |
| 19 Jan 2026, 13:09 | 12.1 | 12.1 mg/l |
| 7 Jan 2026, 14:00 | 13.1 | 13.1 mg/l |
| 16 Dec 2025, 12:18 | 10.8 | 10.8 mg/l |
| 2 Dec 2025, 12:23 | 11.1 | 11.1 mg/l |
| 19 Nov 2025, 12:29 | 11.9 | 11.9 mg/l |
| 5 Nov 2025, 10:50 | 9.92 | 9.92 mg/l |
| 3 Sep 2025, 14:04 | 8.77 | 8.77 mg/l |
| 4 Aug 2025, 10:32 | 7.53 | 7.53 mg/l |
| 3 Jun 2025, 11:09 | 7.51 | 7.51 mg/l |
| 6 May 2025, 11:12 | 8.04 | 8.04 mg/l |
| 1 Apr 2025, 14:52 | 14.3 | 14.3 mg/l |
| 7 Mar 2025, 13:04 | 12.9 | 12.9 mg/l |
| 14 Feb 2025, 10:48 | 12.9 | 12.9 mg/l |
| 31 Jan 2025, 12:31 | 12.4 | 12.4 mg/l |
| 6 Dec 2024, 12:41 | 11.1 | 11.1 mg/l |
| 21 Nov 2024, 13:34 | 12.2 | 12.2 mg/l |
| 25 Oct 2024, 11:48 | 10 | 10 mg/l |
| 20 Sep 2024, 13:23 | 7.46 | 7.46 mg/l |
| 22 Aug 2024, 11:42 | 6.96 | 6.96 mg/l |
| 15 Jul 2024, 10:32 | 8.12 | 8.12 mg/l |
| 27 Jun 2024, 11:34 | 6.61 | 6.61 mg/l |
Water temperature
code 0076 · °C
17.9 °C
Sampled 28 May 2026, 4 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 09:28 | 17.9 | 17.9 °C |
| 14 May 2026, 11:23 | 11.1 | 11.1 °C |
| 21 Apr 2026, 13:03 | 11.8 | 11.8 °C |
| 9 Apr 2026, 12:40 | 13.9 | 13.9 °C |
| 23 Mar 2026, 13:10 | 9.9 | 9.9 °C |
| 13 Mar 2026, 11:02 | 9.4 | 9.4 °C |
| 24 Feb 2026, 14:11 | 10.3 | 10.3 °C |
| 6 Feb 2026, 11:12 | 8.4 | 8.4 °C |
| 19 Jan 2026, 13:09 | 8 | 8 °C |
| 7 Jan 2026, 14:00 | 2.8 | 2.8 °C |
| 16 Dec 2025, 12:18 | 9.5 | 9.5 °C |
| 2 Dec 2025, 12:23 | 9 | 9 °C |
| 19 Nov 2025, 12:29 | 5.7 | 5.7 °C |
| 5 Nov 2025, 10:50 | 12.9 | 12.9 °C |
| 16 Oct 2025, 12:27 | 12.7 | 12.7 °C |
| 3 Sep 2025, 14:04 | 17.3 | 17.3 °C |
| 4 Aug 2025, 10:32 | 17.2 | 17.2 °C |
| 3 Jun 2025, 11:09 | 14 | 14 °C |
| 6 May 2025, 11:12 | 10.1 | 10.1 °C |
| 1 Apr 2025, 14:52 | 12.5 | 12.5 °C |
| 7 Mar 2025, 13:04 | 8.8 | 8.8 °C |
| 14 Feb 2025, 10:48 | 4.4 | 4.4 °C |
| 31 Jan 2025, 12:31 | 6 | 6 °C |
| 6 Dec 2024, 12:41 | 8.6 | 8.6 °C |
| 21 Nov 2024, 13:34 | 4.9 | 4.9 °C |
| 25 Oct 2024, 11:48 | 12.4 | 12.4 °C |
| 20 Sep 2024, 13:23 | 16.5 | 16.5 °C |
| 22 Aug 2024, 11:42 | 15.7 | 15.7 °C |
| 15 Jul 2024, 10:32 | 16.1 | 16.1 °C |
| 27 Jun 2024, 11:34 | 17.6 | 17.6 °C |
pH
code 0061
7.45
Sampled 28 May 2026, 4 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 09:28 | 7.45 | 7.45 |
| 14 May 2026, 11:23 | 7.86 | 7.86 |
| 21 Apr 2026, 13:03 | 7.93 | 7.93 |
| 9 Apr 2026, 12:40 | 8 | 8 |
| 23 Mar 2026, 13:10 | 8.72 | 8.72 |
| 13 Mar 2026, 11:02 | 7.93 | 7.93 |
| 24 Feb 2026, 14:11 | 7.81 | 7.81 |
| 6 Feb 2026, 11:12 | 7.79 | 7.79 |
| 19 Jan 2026, 13:09 | 7.74 | 7.74 |
| 7 Jan 2026, 14:00 | 7.65 | 7.65 |
| 16 Dec 2025, 12:18 | 7.88 | 7.88 |
| 2 Dec 2025, 12:23 | 7.74 | 7.74 |
| 19 Nov 2025, 12:29 | 7.83 | 7.83 |
| 5 Nov 2025, 10:50 | 7.74 | 7.74 |
| 16 Oct 2025, 12:27 | 7.74 | 7.74 |
| 3 Sep 2025, 14:04 | 7.64 | 7.64 |
| 4 Aug 2025, 10:32 | 7.86 | 7.86 |
| 3 Jun 2025, 11:09 | 7.79 | 7.79 |
| 6 May 2025, 11:12 | 7.73 | 7.73 |
| 1 Apr 2025, 14:52 | 8.57 | 8.57 |
| 7 Mar 2025, 13:04 | 8.1 | 8.1 |
| 14 Feb 2025, 10:48 | 7.85 | 7.85 |
| 31 Jan 2025, 12:31 | 7.79 | 7.79 |
| 6 Dec 2024, 12:41 | 7.52 | 7.52 |
| 21 Nov 2024, 13:34 | 7.71 | 7.71 |
| 25 Oct 2024, 11:48 | 7.8 | 7.8 |
| 20 Sep 2024, 13:23 | 7.67 | 7.67 |
| 22 Aug 2024, 11:42 | 7.84 | 7.84 |
| 15 Jul 2024, 10:32 | 8.13 | 8.13 |
| 27 Jun 2024, 11:34 | 7.66 | 7.66 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.098 mg/l
Sampled 28 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 09:28 | 0.098 | 0.098 mg/l |
| 14 May 2026, 11:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Apr 2026, 13:03 | 0.061 | 0.061 mg/l |
| 9 Apr 2026, 12:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Mar 2026, 13:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Mar 2026, 11:02 | 0.16 | 0.16 mg/l |
| 24 Feb 2026, 14:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Feb 2026, 11:12 | 0.11 | 0.11 mg/l |
| 19 Jan 2026, 13:09 | 0.041 | 0.041 mg/l |
| 7 Jan 2026, 14:00 | 0.15 | 0.15 mg/l |
| 16 Dec 2025, 12:18 | 0.049 | 0.049 mg/l |
| 2 Dec 2025, 12:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Nov 2025, 12:29 | 0.065 | 0.065 mg/l |
| 5 Nov 2025, 10:50 | 0.039 | 0.039 mg/l |
| 16 Oct 2025, 12:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Sep 2025, 14:04 | 0.076 | 0.076 mg/l |
| 4 Aug 2025, 10:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jun 2025, 11:09 | 0.063 | 0.063 mg/l |
| 6 May 2025, 11:12 | 0.14 | 0.14 mg/l |
| 1 Apr 2025, 14:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Mar 2025, 13:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Feb 2025, 10:48 | 0.094 | 0.094 mg/l |
| 31 Jan 2025, 12:31 | 0.051 | 0.051 mg/l |
| 21 Nov 2024, 13:34 | 0.091 | 0.091 mg/l |
| 25 Oct 2024, 11:48 | 0.037 | 0.037 mg/l |
| 20 Sep 2024, 13:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Aug 2024, 11:42 | 0.036 | 0.036 mg/l |
| 15 Jul 2024, 10:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Jun 2024, 11:34 | 0.057 | 0.057 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.512 mg/l
Sampled 28 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 09:28 | 0.512 | 0.512 mg/l |
| 14 May 2026, 11:23 | 0.314 | 0.314 mg/l |
| 21 Apr 2026, 13:03 | 0.532 | 0.532 mg/l |
| 9 Apr 2026, 12:40 | 0.814 | 0.814 mg/l |
| 23 Mar 2026, 13:10 | 1.59 | 1.59 mg/l |
| 13 Mar 2026, 11:02 | 1.88 | 1.88 mg/l |
| 24 Feb 2026, 14:11 | 1.99 | 1.99 mg/l |
| 6 Feb 2026, 11:12 | 1.19 | 1.19 mg/l |
| 19 Jan 2026, 13:09 | 2.79 | 2.79 mg/l |
| 7 Jan 2026, 14:00 | 2.88 | 2.88 mg/l |
| 16 Dec 2025, 12:18 | 3.38 | 3.38 mg/l |
| 2 Dec 2025, 12:23 | 4.39 | 4.39 mg/l |
| 19 Nov 2025, 12:29 | 4.05 | 4.05 mg/l |
| 5 Nov 2025, 10:50 | 6.05 | 6.05 mg/l |
| 16 Oct 2025, 12:27 | 0.431 | 0.431 mg/l |
| 3 Sep 2025, 14:04 | 0.892 | 0.892 mg/l |
| 4 Aug 2025, 10:32 | 0.416 | 0.416 mg/l |
| 3 Jun 2025, 11:09 | 0.459 | 0.459 mg/l |
| 6 May 2025, 11:12 | 0.637 | 0.637 mg/l |
| 1 Apr 2025, 14:52 | 0.993 | 0.993 mg/l |
| 7 Mar 2025, 13:04 | 3.38 | 3.38 mg/l |
| 14 Feb 2025, 10:48 | 3.08 | 3.08 mg/l |
| 31 Jan 2025, 12:31 | 3.28 | 3.28 mg/l |
| 21 Nov 2024, 13:34 | 3.57 | 3.57 mg/l |
| 25 Oct 2024, 11:48 | 3.17 | 3.17 mg/l |
| 20 Sep 2024, 13:23 | 0.674 | 0.674 mg/l |
| 22 Aug 2024, 11:42 | 0.386 | 0.386 mg/l |
| 15 Jul 2024, 10:32 | 0.506 | 0.506 mg/l |
| 27 Jun 2024, 11:34 | 0.483 | 0.483 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.14 mg/l
Sampled 28 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 09:28 | 0.14 | 0.14 mg/l |
| 14 May 2026, 11:23 | 0.099 | 0.099 mg/l |
| 21 Apr 2026, 13:03 | 0.042 | 0.042 mg/l |
| 9 Apr 2026, 12:40 | 0.022 | 0.022 mg/l |
| 23 Mar 2026, 13:10 | 0.044 | 0.044 mg/l |
| 13 Mar 2026, 11:02 | 0.067 | 0.067 mg/l |
| 24 Feb 2026, 14:11 | 0.074 | 0.074 mg/l |
| 6 Feb 2026, 11:12 | 0.091 | 0.091 mg/l |
| 19 Jan 2026, 13:09 | 0.061 | 0.061 mg/l |
| 7 Jan 2026, 14:00 | 0.063 | 0.063 mg/l |
| 16 Dec 2025, 12:18 | 0.064 | 0.064 mg/l |
| 2 Dec 2025, 12:23 | 0.074 | 0.074 mg/l |
| 19 Nov 2025, 12:29 | 0.081 | 0.081 mg/l |
| 5 Nov 2025, 10:50 | 0.063 | 0.063 mg/l |
| 16 Oct 2025, 12:27 | 0.087 | 0.087 mg/l |
| 3 Sep 2025, 14:04 | 0.093 | 0.093 mg/l |
| 4 Aug 2025, 10:32 | 0.23 | 0.23 mg/l |
| 3 Jun 2025, 11:09 | 0.13 | 0.13 mg/l |
| 6 May 2025, 11:12 | 0.11 | 0.11 mg/l |
| 1 Apr 2025, 14:52 | 0.032 | 0.032 mg/l |
| 7 Mar 2025, 13:04 | 0.051 | 0.051 mg/l |
| 14 Feb 2025, 10:48 | 0.087 | 0.087 mg/l |
| 31 Jan 2025, 12:31 | 0.077 | 0.077 mg/l |
| 21 Nov 2024, 13:34 | 0.15 | 0.15 mg/l |
| 25 Oct 2024, 11:48 | 0.092 | 0.092 mg/l |
| 20 Sep 2024, 13:23 | 0.088 | 0.088 mg/l |
| 22 Aug 2024, 11:42 | 0.15 | 0.15 mg/l |
| 15 Jul 2024, 10:32 | 0.091 | 0.091 mg/l |
| 27 Jun 2024, 11:34 | 0.11 | 0.11 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
607 µS/cm
Sampled 28 May 2026, 4 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 09:28 | 607 | 607 µS/cm |
| 14 May 2026, 11:23 | 665 | 665 µS/cm |
| 21 Apr 2026, 13:03 | 640 | 640 µS/cm |
| 9 Apr 2026, 12:40 | 623 | 623 µS/cm |
| 23 Mar 2026, 13:10 | 528 | 528 µS/cm |
| 13 Mar 2026, 11:02 | 377 | 377 µS/cm |
| 24 Feb 2026, 14:11 | 427 | 427 µS/cm |
| 6 Feb 2026, 11:12 | 239 | 239 µS/cm |
| 19 Jan 2026, 13:09 | 408 | 408 µS/cm |
| 7 Jan 2026, 14:00 | 544 | 544 µS/cm |
| 16 Dec 2025, 12:18 | 460 | 460 µS/cm |
| 2 Dec 2025, 12:23 | 459 | 459 µS/cm |
| 19 Nov 2025, 12:29 | 238 | 238 µS/cm |
| 5 Nov 2025, 10:50 | 504 | 504 µS/cm |
| 16 Oct 2025, 12:27 | 733 | 733 µS/cm |
| 3 Sep 2025, 14:04 | 307 | 307 µS/cm |
| 4 Aug 2025, 10:32 | 411 | 411 µS/cm |
| 3 Jun 2025, 11:09 | 590 | 590 µS/cm |
| 6 May 2025, 11:12 | 736 | 736 µS/cm |
| 1 Apr 2025, 14:52 | 676 | 676 µS/cm |
| 7 Mar 2025, 13:04 | 482 | 482 µS/cm |
| 14 Feb 2025, 10:48 | 441 | 441 µS/cm |
| 31 Jan 2025, 12:31 | 397 | 397 µS/cm |
| 6 Dec 2024, 12:41 | 312 | 312 µS/cm |
| 21 Nov 2024, 13:34 | 403 | 403 µS/cm |
| 25 Oct 2024, 11:48 | 425 | 425 µS/cm |
| 20 Sep 2024, 13:23 | 527 | 527 µS/cm |
| 22 Aug 2024, 11:42 | 626 | 626 µS/cm |
| 15 Jul 2024, 10:32 | 563 | 563 µS/cm |
| 27 Jun 2024, 11:34 | 590 | 590 µS/cm |
Everything measured here
14 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 14 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 29 | Jun 2024 – May 2026 | 47.4% 28 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 29 | Jun 2024 – May 2026 | 4.48 mg/l 28 May 2026 |
| Temperature of Water 0076 | River water | 30 | Jun 2024 – May 2026 | 17.9 °C 28 May 2026 |
| pH 0061 | River water | 30 | Jun 2024 – May 2026 | 7.45 28 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 29 | Jun 2024 – May 2026 | 0.098 mg/l 28 May 2026 |
| Nitrate as N 0117 | River water | 29 | Jun 2024 – May 2026 | 0.512 mg/l 28 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 29 | Jun 2024 – May 2026 | 0.14 mg/l 28 May 2026 |
| Conductivity at 25 C 0077 | River water | 30 | Jun 2024 – May 2026 | 607 µS/cm 28 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 29 | Jun 2024 – May 2026 | 120 mg/l 28 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 29 | Jun 2024 – May 2026 | 0.00092 mg/l 28 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 28 | Jun 2024 – May 2026 | 1.9 mg/l 28 May 2026 |
| Nitrite as N 0118 | River water | 29 | Jun 2024 – May 2026 | 0.018 mg/l 28 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 29 | Jun 2024 – May 2026 | 0.53 mg/l 28 May 2026 |
| No flow /No sample 7668 | River water | 1 | Jul 2025 – Jul 2025 | No flow/discharge at sampling point 18 Jul 2025 |
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.