River Arun New Bridge
EA name: R ARUN NEW BRIDGE (also listed as “RIVER ARUN AT NEW BRIDGE”)
Environment Agency sampling point SO-F0002789 · 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
- 22 May 2026, 11:544 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
- 24 since 25 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 506900, 126000As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Arun
- River, by the map
- River ArunPlaced on the river its name gives, 28 m from the line.
- Next gauge downstream
- New Bridge On the River Arun · 0.1 km along the river
- Nearest gauge upstream
- Drungewick On the River Lox · 8.2 km along the riverAlfoldean On the River Arun · 17 km along the river
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
1 visit found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
97.8%
Sampled 22 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 May 2026, 11:54 | 97.8 | 97.8% |
| 8 Apr 2026, 11:14 | 91 | 91% |
| 13 Mar 2026, 14:15 | 97 | 97% |
| 4 Feb 2026, 12:15 | 91.2 | 91.2% |
| 1 Dec 2025, 13:03 | 96.3 | 96.3% |
| 7 Nov 2025, 13:15 | 92.7 | 92.7% |
| 23 Oct 2025, 14:57 | 87.3 | 87.3% |
| 8 Sep 2025, 11:34 | 82.7 | 82.7% |
| 11 Aug 2025, 10:28 | 82.7 | 82.7% |
| 22 Jul 2025, 14:24 | 83.5 | 83.5% |
| 25 Jun 2025, 14:24 | 102 | 102% |
| 2 May 2025, 12:49 | 107.8 | 107.8% |
| 1 Apr 2025, 11:15 | 100.3 | 100.3% |
| 6 Mar 2025, 11:46 | 99.9 | 99.9% |
| 17 Feb 2025, 15:11 | 98.2 | 98.2% |
| 20 Jan 2025, 11:53 | 99.2 | 99.2% |
| 6 Dec 2024, 14:08 | 90 | 90% |
| 19 Nov 2024, 14:35 | 91.5 | 91.5% |
| 15 Oct 2024, 12:01 | 81.6 | 81.6% |
| 27 Sep 2024, 12:09 | 87.5 | 87.5% |
| 17 Sep 2024, 12:07 | 89.6 | 89.6% |
| 18 Jul 2024, 11:10 | 89.2 | 89.2% |
| 25 Jun 2024, 11:51 | 96.8 | 96.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.61 mg/l
Sampled 22 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 May 2026, 11:54 | 9.61 | 9.61 mg/l |
| 8 Apr 2026, 11:14 | 9.94 | 9.94 mg/l |
| 13 Mar 2026, 14:15 | 11 | 11 mg/l |
| 4 Feb 2026, 12:15 | 11 | 11 mg/l |
| 1 Dec 2025, 13:03 | 11.4 | 11.4 mg/l |
| 7 Nov 2025, 13:15 | 9.66 | 9.66 mg/l |
| 23 Oct 2025, 14:57 | 9.28 | 9.28 mg/l |
| 8 Sep 2025, 11:34 | 8.04 | 8.04 mg/l |
| 11 Aug 2025, 10:28 | 7.94 | 7.94 mg/l |
| 22 Jul 2025, 14:24 | 7.63 | 7.63 mg/l |
| 25 Jun 2025, 14:24 | 9.02 | 9.02 mg/l |
| 2 May 2025, 12:49 | 10.3 | 10.3 mg/l |
| 1 Apr 2025, 11:15 | 11.1 | 11.1 mg/l |
| 6 Mar 2025, 11:46 | 12.3 | 12.3 mg/l |
| 17 Feb 2025, 15:11 | 12.6 | 12.6 mg/l |
| 20 Jan 2025, 11:53 | 12.7 | 12.7 mg/l |
| 6 Dec 2024, 14:08 | 10.3 | 10.3 mg/l |
| 19 Nov 2024, 14:35 | 10.6 | 10.6 mg/l |
| 15 Oct 2024, 12:01 | 8.81 | 8.81 mg/l |
| 27 Sep 2024, 12:09 | 8.94 | 8.94 mg/l |
| 17 Sep 2024, 12:07 | 9.36 | 9.36 mg/l |
| 18 Jul 2024, 11:10 | 8.49 | 8.49 mg/l |
| 25 Jun 2024, 11:51 | 8.89 | 8.89 mg/l |
Water temperature
code 0076 · °C
16.1 °C
Sampled 22 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 May 2026, 11:54 | 16.1 | 16.1 °C |
| 8 Apr 2026, 11:14 | 11.3 | 11.3 °C |
| 13 Mar 2026, 14:15 | 9.8 | 9.8 °C |
| 4 Feb 2026, 12:15 | 7.2 | 7.2 °C |
| 1 Dec 2025, 13:03 | 8.1 | 8.1 °C |
| 7 Nov 2025, 13:15 | 13.4 | 13.4 °C |
| 23 Oct 2025, 14:57 | 12.5 | 12.5 °C |
| 8 Sep 2025, 11:34 | 16.6 | 16.6 °C |
| 11 Aug 2025, 10:28 | 17.2 | 17.2 °C |
| 22 Jul 2025, 14:24 | 19.6 | 19.6 °C |
| 25 Jun 2025, 14:24 | 21.3 | 21.3 °C |
| 2 May 2025, 12:49 | 17.5 | 17.5 °C |
| 1 Apr 2025, 11:15 | 10.9 | 10.9 °C |
| 6 Mar 2025, 11:46 | 6.5 | 6.5 °C |
| 17 Feb 2025, 15:11 | 4.9 | 4.9 °C |
| 20 Jan 2025, 11:53 | 5 | 5 °C |
| 6 Dec 2024, 14:08 | 9.3 | 9.3 °C |
| 19 Nov 2024, 14:35 | 8.7 | 8.7 °C |
| 15 Oct 2024, 12:01 | 11.8 | 11.8 °C |
| 27 Sep 2024, 12:09 | 14.3 | 14.3 °C |
| 17 Sep 2024, 12:07 | 13.3 | 13.3 °C |
| 18 Jul 2024, 11:10 | 17.6 | 17.6 °C |
| 25 Jun 2024, 11:51 | 19.4 | 19.4 °C |
pH
code 0061
7.69
Sampled 22 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 May 2026, 11:54 | 7.69 | 7.69 |
| 8 Apr 2026, 11:14 | 7.94 | 7.94 |
| 13 Mar 2026, 14:15 | 7.86 | 7.86 |
| 4 Feb 2026, 12:15 | 7.44 | 7.44 |
| 1 Dec 2025, 13:03 | 7.67 | 7.67 |
| 7 Nov 2025, 13:15 | 7.3 | 7.3 |
| 23 Oct 2025, 14:57 | 7.49 | 7.49 |
| 8 Sep 2025, 11:34 | 7.55 | 7.55 |
| 11 Aug 2025, 10:28 | 7.5 | 7.5 |
| 22 Jul 2025, 14:24 | 7.46 | 7.46 |
| 25 Jun 2025, 14:24 | 7.62 | 7.62 |
| 2 May 2025, 12:49 | 7.92 | 7.92 |
| 1 Apr 2025, 11:15 | 8.02 | 8.02 |
| 6 Mar 2025, 11:46 | 7.83 | 7.83 |
| 17 Feb 2025, 15:11 | 7.98 | 7.98 |
| 20 Jan 2025, 11:53 | 7.77 | 7.77 |
| 6 Dec 2024, 14:08 | 7.82 | 7.82 |
| 19 Nov 2024, 14:35 | 7.59 | 7.59 |
| 15 Oct 2024, 12:01 | 7.29 | 7.29 |
| 27 Sep 2024, 12:09 | 7.56 | 7.56 |
| 17 Sep 2024, 12:07 | 7.57 | 7.57 |
| 18 Jul 2024, 11:10 | 7.6 | 7.6 |
| 25 Jun 2024, 11:51 | 7.6 | 7.6 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.058 mg/l
Sampled 22 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 May 2026, 11:54 | 0.058 | 0.058 mg/l |
| 8 Apr 2026, 11:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Mar 2026, 14:15 | 0.052 | 0.052 mg/l |
| 4 Feb 2026, 12:15 | 0.063 | 0.063 mg/l |
| 1 Dec 2025, 13:03 | 0.036 | 0.036 mg/l |
| 7 Nov 2025, 13:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Oct 2025, 14:57 | 0.043 | 0.043 mg/l |
| 8 Sep 2025, 11:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Aug 2025, 10:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Jul 2025, 14:24 | 0.052 | 0.052 mg/l |
| 25 Jun 2025, 14:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 May 2025, 12:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Apr 2025, 11:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Mar 2025, 11:46 | 0.096 | 0.096 mg/l |
| 17 Feb 2025, 15:11 | 0.058 | 0.058 mg/l |
| 20 Jan 2025, 11:53 | 0.079 | 0.079 mg/l |
| 19 Nov 2024, 14:35 | 0.081 | 0.081 mg/l |
| 15 Oct 2024, 12:01 | 0.061 | 0.061 mg/l |
| 27 Sep 2024, 12:09 | 0.081 | 0.081 mg/l |
| 17 Sep 2024, 12:07 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Jul 2024, 11:10 | 0.064 | 0.064 mg/l |
| 25 Jun 2024, 11:51 | 0.034 | 0.034 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
17.9 mg/l
Sampled 22 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 May 2026, 11:54 | 17.9 | 17.9 mg/l |
| 8 Apr 2026, 11:14 | 8.18 | 8.18 mg/l |
| 13 Mar 2026, 14:15 | 3.88 | 3.88 mg/l |
| 4 Feb 2026, 12:15 | 2.09 | 2.09 mg/l |
| 1 Dec 2025, 13:03 | 5.19 | 5.19 mg/l |
| 7 Nov 2025, 13:15 | 6.78 | 6.78 mg/l |
| 23 Oct 2025, 14:57 | 8.26 | 8.26 mg/l |
| 8 Sep 2025, 11:34 | 6.38 | 6.38 mg/l |
| 11 Aug 2025, 10:28 | 13 | 13 mg/l |
| 22 Jul 2025, 14:24 | 31.9 | 31.9 mg/l |
| 25 Jun 2025, 14:24 | 23 | 23 mg/l |
| 2 May 2025, 12:49 | 13 | 13 mg/l |
| 1 Apr 2025, 11:15 | 11 | 11 mg/l |
| 6 Mar 2025, 11:46 | 6.44 | 6.44 mg/l |
| 17 Feb 2025, 15:11 | 6.95 | 6.95 mg/l |
| 20 Jan 2025, 11:53 | 8.15 | 8.15 mg/l |
| 19 Nov 2024, 14:35 | 11.9 | 11.9 mg/l |
| 15 Oct 2024, 12:01 | 2.77 | 2.77 mg/l |
| 27 Sep 2024, 12:09 | 6.75 | 6.75 mg/l |
| 17 Sep 2024, 12:07 | 15 | 15 mg/l |
| 18 Jul 2024, 11:10 | 3.97 | 3.97 mg/l |
| 25 Jun 2024, 11:51 | 14.9 | 14.9 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.088 mg/l
Sampled 22 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 May 2026, 11:54 | 0.088 | 0.088 mg/l |
| 8 Apr 2026, 11:14 | 0.055 | 0.055 mg/l |
| 13 Mar 2026, 14:15 | 0.066 | 0.066 mg/l |
| 4 Feb 2026, 12:15 | 0.064 | 0.064 mg/l |
| 1 Dec 2025, 13:03 | 0.063 | 0.063 mg/l |
| 7 Nov 2025, 13:15 | 0.068 | 0.068 mg/l |
| 23 Oct 2025, 14:57 | 0.1 | 0.1 mg/l |
| 8 Sep 2025, 11:34 | 0.096 | 0.096 mg/l |
| 11 Aug 2025, 10:28 | 0.094 | 0.094 mg/l |
| 22 Jul 2025, 14:24 | 0.14 | 0.14 mg/l |
| 25 Jun 2025, 14:24 | 0.099 | 0.099 mg/l |
| 2 May 2025, 12:49 | 0.038 | 0.038 mg/l |
| 1 Apr 2025, 11:15 | 0.031 | 0.031 mg/l |
| 6 Mar 2025, 11:46 | 0.053 | 0.053 mg/l |
| 17 Feb 2025, 15:11 | 0.066 | 0.066 mg/l |
| 20 Jan 2025, 11:53 | 0.078 | 0.078 mg/l |
| 19 Nov 2024, 14:35 | 0.2 | 0.2 mg/l |
| 15 Oct 2024, 12:01 | 0.16 | 0.16 mg/l |
| 27 Sep 2024, 12:09 | 0.13 | 0.13 mg/l |
| 17 Sep 2024, 12:07 | 0.15 | 0.15 mg/l |
| 18 Jul 2024, 11:10 | 0.13 | 0.13 mg/l |
| 25 Jun 2024, 11:51 | 0.14 | 0.14 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
674 µS/cm
Sampled 22 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 May 2026, 11:54 | 674 | 674 µS/cm |
| 8 Apr 2026, 11:14 | 490 | 490 µS/cm |
| 13 Mar 2026, 14:15 | 359 | 359 µS/cm |
| 4 Feb 2026, 12:15 | 236 | 236 µS/cm |
| 1 Dec 2025, 13:03 | 389 | 389 µS/cm |
| 7 Nov 2025, 13:15 | 435 | 435 µS/cm |
| 23 Oct 2025, 14:57 | 455 | 455 µS/cm |
| 8 Sep 2025, 11:34 | 461 | 461 µS/cm |
| 11 Aug 2025, 10:28 | 619 | 619 µS/cm |
| 22 Jul 2025, 14:24 | 981 | 981 µS/cm |
| 25 Jun 2025, 14:24 | 872 | 872 µS/cm |
| 2 May 2025, 12:49 | 620 | 620 µS/cm |
| 1 Apr 2025, 11:15 | 555 | 555 µS/cm |
| 6 Mar 2025, 11:46 | 392 | 392 µS/cm |
| 17 Feb 2025, 15:11 | 422 | 422 µS/cm |
| 20 Jan 2025, 11:53 | 428 | 428 µS/cm |
| 6 Dec 2024, 14:08 | 267 | 267 µS/cm |
| 19 Nov 2024, 14:35 | 525 | 525 µS/cm |
| 15 Oct 2024, 12:01 | 239 | 239 µS/cm |
| 27 Sep 2024, 12:09 | 365 | 365 µS/cm |
| 17 Sep 2024, 12:07 | 593 | 593 µS/cm |
| 18 Jul 2024, 11:10 | 355 | 355 µS/cm |
| 25 Jun 2024, 11:51 | 626 | 626 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 | 23 | Jun 2024 – May 2026 | 97.8% 22 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Jun 2024 – May 2026 | 9.61 mg/l 22 May 2026 |
| Temperature of Water 0076 | River water | 23 | Jun 2024 – May 2026 | 16.1 °C 22 May 2026 |
| pH 0061 | River water | 23 | Jun 2024 – May 2026 | 7.69 22 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 22 | Jun 2024 – May 2026 | 0.058 mg/l 22 May 2026 |
| Nitrate as N 0117 | River water | 22 | Jun 2024 – May 2026 | 17.9 mg/l 22 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 22 | Jun 2024 – May 2026 | 0.088 mg/l 22 May 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Jun 2024 – May 2026 | 674 µS/cm 22 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 22 | Jun 2024 – May 2026 | 74 mg/l 22 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 22 | Jun 2024 – May 2026 | 0.00082 mg/l 22 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 22 | Jun 2024 – May 2026 | below 3 mg/l 22 May 2026 |
| Nitrite as N 0118 | River water | 22 | Jun 2024 – May 2026 | 0.073 mg/l 22 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 22 | Jun 2024 – May 2026 | 18 mg/l 22 May 2026 |
| No flow /No sample 7668 | River water | 1 | Jan 2026 – Jan 2026 | No flow/discharge at sampling point 9 Jan 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.