Marsham SWR downstream of Tribs- Cliffend
EA name: MARSHAM SWR DS TRIBS- CLIFFEND (also listed as “MARSHAM SEWER DOWNSTREAM CONFLUENCE WITH TRIBUTARIES AT CLIFFEND”)
Environment Agency sampling point SO-E0001604 · 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
- 20 Mar 2026, 07:436 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
- 30 since 17 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives)
- Where
- National Grid 588824, 113578As published, to the nearest 1 m. Open in a map
- River, by its own name
- Marsham Sewer
- River, by the map
- Marsham SewerPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- None tracedThe map stops before any gauge.
- Why it was sampled
- Monitoring (national agency policy) (18 samples)
Environmental monitoring statutory (EU directives) (12 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
90.8%
Sampled 20 Mar 2026, 6 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 07:43 | 90.8 | 90.8% |
| 3 Feb 2026, 11:04 | 95.2 | 95.2% |
| 7 Jan 2026, 13:06 | 93.9 | 93.9% |
| 3 Dec 2025, 08:48 | 91.6 | 91.6% |
| 7 Nov 2025, 08:06 | 82.1 | 82.1% |
| 1 Oct 2025, 13:06 | 64.5 | 64.5% |
| 12 Sep 2025, 08:33 | 63.5 | 63.5% |
| 13 Aug 2025, 12:01 | 44.5 | 44.5% |
| 2 Jul 2025, 09:06 | 35.2 | 35.2% |
| 4 Jun 2025, 09:10 | 51.9 | 51.9% |
| 13 May 2025, 13:17 | 75.5 | 75.5% |
| 22 Apr 2025, 09:55 | 73.7 | 73.7% |
| 19 Mar 2025, 12:15 | 106.3 | 106.3% |
| 25 Feb 2025, 13:17 | 96.8 | 96.8% |
| 20 Jan 2025, 13:01 | 93.3 | 93.3% |
| 5 Dec 2024, 13:07 | 91.1 | 91.1% |
| 19 Nov 2024, 11:33 | 87.5 | 87.5% |
| 18 Oct 2024, 13:21 | 89.2 | 89.2% |
| 16 Sep 2024, 14:17 | 74.2 | 74.2% |
| 27 Aug 2024, 11:32 | 67.1 | 67.1% |
| 16 Jul 2024, 14:46 | 84.2 | 84.2% |
| 27 Jun 2024, 13:09 | 80.2 | 80.2% |
| 20 May 2024, 14:50 | 94.7 | 94.7% |
| 18 Apr 2024, 15:02 | 109.9 | 109.9% |
| 20 Mar 2024, 09:25 | 97.3 | 97.3% |
| 20 Feb 2024, 10:31 | 95.3 | 95.3% |
| 16 Jan 2024, 13:36 | 95.5 | 95.5% |
| 5 Dec 2023, 11:14 | 92.5 | 92.5% |
| 20 Nov 2023, 14:08 | 91.4 | 91.4% |
| 17 Oct 2023, 10:22 | 68.4 | 68.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11 mg/l
Sampled 20 Mar 2026, 6 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 07:43 | 11 | 11 mg/l |
| 3 Feb 2026, 11:04 | 11.5 | 11.5 mg/l |
| 7 Jan 2026, 13:06 | 12.1 | 12.1 mg/l |
| 3 Dec 2025, 08:48 | 10.6 | 10.6 mg/l |
| 7 Nov 2025, 08:06 | 8.53 | 8.53 mg/l |
| 1 Oct 2025, 13:06 | 6.67 | 6.67 mg/l |
| 12 Sep 2025, 08:33 | 6.57 | 6.57 mg/l |
| 13 Aug 2025, 12:01 | 4.19 | 4.19 mg/l |
| 2 Jul 2025, 09:06 | 3.26 | 3.26 mg/l |
| 4 Jun 2025, 09:10 | 5.35 | 5.35 mg/l |
| 13 May 2025, 13:17 | 7.63 | 7.63 mg/l |
| 22 Apr 2025, 09:55 | 8.23 | 8.23 mg/l |
| 19 Mar 2025, 12:15 | 12.6 | 12.6 mg/l |
| 25 Feb 2025, 13:17 | 11.2 | 11.2 mg/l |
| 20 Jan 2025, 13:01 | 11.8 | 11.8 mg/l |
| 5 Dec 2024, 13:07 | 10.2 | 10.2 mg/l |
| 19 Nov 2024, 11:33 | 9.86 | 9.86 mg/l |
| 18 Oct 2024, 13:21 | 9.17 | 9.17 mg/l |
| 16 Sep 2024, 14:17 | 7.29 | 7.29 mg/l |
| 27 Aug 2024, 11:32 | 6.34 | 6.34 mg/l |
| 16 Jul 2024, 14:46 | 8.15 | 8.15 mg/l |
| 27 Jun 2024, 13:09 | 7.59 | 7.59 mg/l |
| 20 May 2024, 14:50 | 9.46 | 9.46 mg/l |
| 18 Apr 2024, 15:02 | 11.9 | 11.9 mg/l |
| 20 Mar 2024, 09:25 | 10.9 | 10.9 mg/l |
| 20 Feb 2024, 10:31 | 11 | 11 mg/l |
| 16 Jan 2024, 13:36 | 12.6 | 12.6 mg/l |
| 5 Dec 2023, 11:14 | 10.9 | 10.9 mg/l |
| 20 Nov 2023, 14:08 | 9.99 | 9.99 mg/l |
| 17 Oct 2023, 10:22 | 7.56 | 7.56 mg/l |
Water temperature
code 0076 · °C
7.1 °C
Sampled 20 Mar 2026, 6 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 07:43 | 7.1 | 7.1 °C |
| 3 Feb 2026, 11:04 | 7.2 | 7.2 °C |
| 7 Jan 2026, 13:06 | 4.7 | 4.7 °C |
| 3 Dec 2025, 08:48 | 8.9 | 8.9 °C |
| 7 Nov 2025, 08:06 | 13.5 | 13.5 °C |
| 1 Oct 2025, 13:06 | 13.7 | 13.7 °C |
| 12 Sep 2025, 08:33 | 13.7 | 13.7 °C |
| 13 Aug 2025, 12:01 | 18.1 | 18.1 °C |
| 2 Jul 2025, 09:06 | 19 | 19 °C |
| 4 Jun 2025, 09:10 | 13.9 | 13.9 °C |
| 13 May 2025, 13:17 | 14.8 | 14.8 °C |
| 22 Apr 2025, 09:55 | 10.4 | 10.4 °C |
| 19 Mar 2025, 12:15 | 7.9 | 7.9 °C |
| 25 Feb 2025, 13:17 | 8.9 | 8.9 °C |
| 20 Jan 2025, 13:01 | 5.4 | 5.4 °C |
| 5 Dec 2024, 13:07 | 10.4 | 10.4 °C |
| 19 Nov 2024, 11:33 | 10 | 10 °C |
| 18 Oct 2024, 13:21 | 14 | 14 °C |
| 16 Sep 2024, 14:17 | 16.1 | 16.1 °C |
| 27 Aug 2024, 11:32 | 18 | 18 °C |
| 16 Jul 2024, 14:46 | 16.8 | 16.8 °C |
| 27 Jun 2024, 13:09 | 17.9 | 17.9 °C |
| 20 May 2024, 14:50 | 15.3 | 15.3 °C |
| 18 Apr 2024, 15:02 | 11.8 | 11.8 °C |
| 20 Mar 2024, 09:25 | 10.2 | 10.2 °C |
| 20 Feb 2024, 10:31 | 9 | 9 °C |
| 16 Jan 2024, 13:36 | 3.6 | 3.6 °C |
| 5 Dec 2023, 11:14 | 8 | 8 °C |
| 20 Nov 2023, 14:08 | 11.3 | 11.3 °C |
| 17 Oct 2023, 10:22 | 10.8 | 10.8 °C |
pH
code 0061
7.26
Sampled 20 Mar 2026, 6 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 07:43 | 7.26 | 7.26 |
| 3 Feb 2026, 11:04 | 7.36 | 7.36 |
| 7 Jan 2026, 13:06 | 7.1 | 7.1 |
| 3 Dec 2025, 08:48 | 7.24 | 7.24 |
| 7 Nov 2025, 08:06 | 7.11 | 7.11 |
| 1 Oct 2025, 13:06 | 7.31 | 7.31 |
| 12 Sep 2025, 08:33 | 7.38 | 7.38 |
| 13 Aug 2025, 12:01 | 7.05 | 7.05 |
| 2 Jul 2025, 09:06 | 7.01 | 7.01 |
| 4 Jun 2025, 09:10 | 6.87 | 6.87 |
| 13 May 2025, 13:17 | 7.06 | 7.06 |
| 22 Apr 2025, 09:55 | 7.1 | 7.1 |
| 19 Mar 2025, 12:15 | 7.42 | 7.42 |
| 25 Feb 2025, 13:17 | 7.55 | 7.55 |
| 20 Jan 2025, 13:01 | 7.26 | 7.26 |
| 5 Dec 2024, 13:07 | 7.11 | 7.11 |
| 19 Nov 2024, 11:33 | 7.52 | 7.52 |
| 18 Oct 2024, 13:21 | 7.52 | 7.52 |
| 16 Sep 2024, 14:17 | 7.49 | 7.49 |
| 27 Aug 2024, 11:32 | 7.35 | 7.35 |
| 16 Jul 2024, 14:46 | 7.31 | 7.31 |
| 27 Jun 2024, 13:09 | 7.59 | 7.59 |
| 20 May 2024, 14:50 | 7.63 | 7.63 |
| 18 Apr 2024, 15:02 | 7.32 | 7.32 |
| 20 Mar 2024, 09:25 | 7.94 | 7.94 |
| 20 Feb 2024, 10:31 | 7.26 | 7.26 |
| 16 Jan 2024, 13:36 | 7.73 | 7.73 |
| 5 Dec 2023, 11:14 | 7.22 | 7.22 |
| 20 Nov 2023, 14:08 | 7.54 | 7.54 |
| 17 Oct 2023, 10:22 | 7.11 | 7.11 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.096 mg/l
Sampled 20 Mar 2026, 6 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 07:43 | 0.096 | 0.096 mg/l |
| 3 Feb 2026, 11:04 | 0.086 | 0.086 mg/l |
| 7 Jan 2026, 13:06 | 1.4 | 1.4 mg/l |
| 3 Dec 2025, 08:48 | 0.041 | 0.041 mg/l |
| 7 Nov 2025, 08:06 | 0.033 | 0.033 mg/l |
| 1 Oct 2025, 13:06 | 0.14 | 0.14 mg/l |
| 12 Sep 2025, 08:33 | 0.048 | 0.048 mg/l |
| 13 Aug 2025, 12:01 | 0.16 | 0.16 mg/l |
| 2 Jul 2025, 09:06 | 0.15 | 0.15 mg/l |
| 4 Jun 2025, 09:10 | 0.095 | 0.095 mg/l |
| 13 May 2025, 13:17 | 0.12 | 0.12 mg/l |
| 22 Apr 2025, 09:55 | 0.29 | 0.29 mg/l |
| 19 Mar 2025, 12:15 | 0.12 | 0.12 mg/l |
| 25 Feb 2025, 13:17 | 0.041 | 0.041 mg/l |
| 20 Jan 2025, 13:01 | 0.26 | 0.26 mg/l |
| 5 Dec 2024, 13:07 | 0.094 | 0.094 mg/l |
| 19 Nov 2024, 11:33 | 0.28 | 0.28 mg/l |
| 18 Oct 2024, 13:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Sep 2024, 14:17 | 0.1 | 0.1 mg/l |
| 27 Aug 2024, 11:32 | 0.19 | 0.19 mg/l |
| 16 Jul 2024, 14:46 | 0.03 | 0.03 mg/l |
| 27 Jun 2024, 13:09 | 0.07 | 0.07 mg/l |
| 20 May 2024, 14:50 | 0.049 | 0.049 mg/l |
| 18 Apr 2024, 15:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Mar 2024, 09:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Feb 2024, 10:31 | 0.032 | 0.032 mg/l |
| 16 Jan 2024, 13:36 | 0.1 | 0.1 mg/l |
| 5 Dec 2023, 11:14 | 0.037 | 0.037 mg/l |
| 20 Nov 2023, 14:08 | 0.071 | 0.071 mg/l |
| 17 Oct 2023, 10:22 | 0.06 | 0.06 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.67 mg/l
Sampled 20 Mar 2026, 6 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 07:43 | 2.67 | 2.67 mg/l |
| 3 Feb 2026, 11:04 | 1.99 | 1.99 mg/l |
| 7 Jan 2026, 13:06 | 2.77 | 2.77 mg/l |
| 3 Dec 2025, 08:48 | 1.49 | 1.49 mg/l |
| 7 Nov 2025, 08:06 | 2.19 | 2.19 mg/l |
| 1 Oct 2025, 13:06 | 9.25 | 9.25 mg/l |
| 12 Sep 2025, 08:33 | 4.28 | 4.28 mg/l |
| 13 Aug 2025, 12:01 | 11.9 | 11.9 mg/l |
| 2 Jul 2025, 09:06 | 8.54 | 8.54 mg/l |
| 4 Jun 2025, 09:10 | 6.23 | 6.23 mg/l |
| 13 May 2025, 13:17 | 6.29 | 6.29 mg/l |
| 22 Apr 2025, 09:55 | 5.8 | 5.8 mg/l |
| 19 Mar 2025, 12:15 | 4.76 | 4.76 mg/l |
| 25 Feb 2025, 13:17 | 1.99 | 1.99 mg/l |
| 20 Jan 2025, 13:01 | 3.86 | 3.86 mg/l |
| 19 Nov 2024, 11:33 | 1.67 | 1.67 mg/l |
| 18 Oct 2024, 13:21 | 1.49 | 1.49 mg/l |
| 16 Sep 2024, 14:17 | 9.37 | 9.37 mg/l |
| 27 Aug 2024, 11:32 | 6.58 | 6.58 mg/l |
| 16 Jul 2024, 14:46 | 4.17 | 4.17 mg/l |
| 27 Jun 2024, 13:09 | 6.13 | 6.13 mg/l |
| 20 May 2024, 14:50 | 4.97 | 4.97 mg/l |
| 18 Apr 2024, 15:02 | 4.19 | 4.19 mg/l |
| 20 Mar 2024, 09:25 | 2.49 | 2.49 mg/l |
| 20 Feb 2024, 10:31 | 2.09 | 2.09 mg/l |
| 16 Jan 2024, 13:36 | 4.08 | 4.08 mg/l |
| 5 Dec 2023, 11:14 | 1.39 | 1.39 mg/l |
| 20 Nov 2023, 14:08 | 1.49 | 1.49 mg/l |
| 17 Oct 2023, 10:22 | 8.76 | 8.76 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.052 mg/l
Sampled 20 Mar 2026, 6 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 07:43 | 0.052 | 0.052 mg/l |
| 3 Feb 2026, 11:04 | 0.023 | 0.023 mg/l |
| 7 Jan 2026, 13:06 | 0.039 | 0.039 mg/l |
| 3 Dec 2025, 08:48 | 0.033 | 0.033 mg/l |
| 7 Nov 2025, 08:06 | 0.032 | 0.032 mg/l |
| 1 Oct 2025, 13:06 | 0.05 | 0.05 mg/l |
| 12 Sep 2025, 08:33 | 0.051 | 0.051 mg/l |
| 13 Aug 2025, 12:01 | 0.059 | 0.059 mg/l |
| 2 Jul 2025, 09:06 | 0.074 | 0.074 mg/l |
| 4 Jun 2025, 09:10 | 0.11 | 0.11 mg/l |
| 13 May 2025, 13:17 | 0.15 | 0.15 mg/l |
| 22 Apr 2025, 09:55 | 0.14 | 0.14 mg/l |
| 19 Mar 2025, 12:15 | 0.048 | 0.048 mg/l |
| 25 Feb 2025, 13:17 | 0.036 | 0.036 mg/l |
| 20 Jan 2025, 13:01 | 0.051 | 0.051 mg/l |
| 5 Dec 2024, 13:07 | 0.072 | 0.072 mg/l |
| 19 Nov 2024, 11:33 | 0.11 | 0.11 mg/l |
| 18 Oct 2024, 13:21 | 0.037 | 0.037 mg/l |
| 16 Sep 2024, 14:17 | 0.089 | 0.089 mg/l |
| 27 Aug 2024, 11:32 | 0.12 | 0.12 mg/l |
| 16 Jul 2024, 14:46 | 0.087 | 0.087 mg/l |
| 27 Jun 2024, 13:09 | 0.15 | 0.15 mg/l |
| 20 May 2024, 14:50 | 0.059 | 0.059 mg/l |
| 18 Apr 2024, 15:02 | 0.043 | 0.043 mg/l |
| 20 Mar 2024, 09:25 | 0.027 | 0.027 mg/l |
| 20 Feb 2024, 10:31 | 0.034 | 0.034 mg/l |
| 16 Jan 2024, 13:36 | 0.042 | 0.042 mg/l |
| 5 Dec 2023, 11:14 | 0.047 | 0.047 mg/l |
| 20 Nov 2023, 14:08 | 0.036 | 0.036 mg/l |
| 17 Oct 2023, 10:22 | 0.074 | 0.074 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
403 µS/cm
Sampled 20 Mar 2026, 6 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 07:43 | 403 | 403 µS/cm |
| 3 Feb 2026, 11:04 | 364 | 364 µS/cm |
| 7 Jan 2026, 13:06 | 648 | 648 µS/cm |
| 3 Dec 2025, 08:48 | 354 | 354 µS/cm |
| 7 Nov 2025, 08:06 | 388 | 388 µS/cm |
| 1 Oct 2025, 13:06 | 799 | 799 µS/cm |
| 12 Sep 2025, 08:33 | 476 | 476 µS/cm |
| 13 Aug 2025, 12:01 | 823 | 823 µS/cm |
| 2 Jul 2025, 09:06 | 756 | 756 µS/cm |
| 4 Jun 2025, 09:10 | 585 | 585 µS/cm |
| 13 May 2025, 13:17 | 514 | 514 µS/cm |
| 22 Apr 2025, 09:55 | 513 | 513 µS/cm |
| 19 Mar 2025, 12:15 | 468 | 468 µS/cm |
| 25 Feb 2025, 13:17 | 352 | 352 µS/cm |
| 20 Jan 2025, 13:01 | 431 | 431 µS/cm |
| 5 Dec 2024, 13:07 | 313 | 313 µS/cm |
| 19 Nov 2024, 11:33 | 340 | 340 µS/cm |
| 18 Oct 2024, 13:21 | 341 | 341 µS/cm |
| 16 Sep 2024, 14:17 | 582 | 582 µS/cm |
| 27 Aug 2024, 11:32 | 550 | 550 µS/cm |
| 16 Jul 2024, 14:46 | 492 | 492 µS/cm |
| 27 Jun 2024, 13:09 | 597 | 597 µS/cm |
| 20 May 2024, 14:50 | 469 | 469 µS/cm |
| 18 Apr 2024, 15:02 | 427 | 427 µS/cm |
| 20 Mar 2024, 09:25 | 551 | 551 µS/cm |
| 20 Feb 2024, 10:31 | 368 | 368 µS/cm |
| 16 Jan 2024, 13:36 | 478 | 478 µS/cm |
| 5 Dec 2023, 11:14 | 332 | 332 µS/cm |
| 20 Nov 2023, 14:08 | 319 | 319 µS/cm |
| 17 Oct 2023, 10:22 | 560 | 560 µS/cm |
Everything measured here
13 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 13 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 30 | Oct 2023 – Mar 2026 | 90.8% 20 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 30 | Oct 2023 – Mar 2026 | 11 mg/l 20 Mar 2026 |
| Temperature of Water 0076 | River water | 30 | Oct 2023 – Mar 2026 | 7.1 °C 20 Mar 2026 |
| pH 0061 | River water | 30 | Oct 2023 – Mar 2026 | 7.26 20 Mar 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 30 | Oct 2023 – Mar 2026 | 0.096 mg/l 20 Mar 2026 |
| Nitrate as N 0117 | River water | 29 | Oct 2023 – Mar 2026 | 2.67 mg/l 20 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 30 | Oct 2023 – Mar 2026 | 0.052 mg/l 20 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 30 | Oct 2023 – Mar 2026 | 403 µS/cm 20 Mar 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 30 | Oct 2023 – Mar 2026 | 53 mg/l 20 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 30 | Oct 2023 – Mar 2026 | 0.00026 mg/l 20 Mar 2026 |
| BOD : 5 Day ATU 0085 | River water | 14 | Feb 2024 – Mar 2025 | 1.9 mg/l 19 Mar 2025 |
| Nitrite as N 0118 | River water | 30 | Oct 2023 – Mar 2026 | 0.027 mg/l 20 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 29 | Oct 2023 – Mar 2026 | 2.7 mg/l 20 Mar 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.