Dalton Beck at Seaham
EA name: DALTON BECK AT SEAHAM
Environment Agency sampling point NE-45500125 · 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
- 15 Sep 2026, 11:3016 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 50 since 8 May 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (local monitoring)
- Where
- National Grid 442840, 549770As published, to the nearest 10 m. Open in a map
- River, by its own name
- Dalton Beck
- River, by the map
- An unnamed streamPlaced by position alone (the only river line close by), 5 m from the line.
- Next gauge downstream
- None tracedThe map stops before any gauge.
- Why it was sampled
- Planned investigation (local monitoring) (39 samples)
Environmental monitoring statutory (EU directives) (11 samples)
1 visit found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
103.6%
Sampled 4 Mar 2025, 19 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 15:21 | 103.6 | 103.6% |
| 12 Feb 2025, 10:16 | 101 | 101% |
| 2 Jan 2025, 10:56 | 99.9 | 99.9% |
| 2 Dec 2024, 14:40 | 98.2 | 98.2% |
| 1 Nov 2024, 10:06 | 99.4 | 99.4% |
| 3 Oct 2024, 08:41 | 99.3 | 99.3% |
| 10 Sep 2024, 09:49 | 100 | 100% |
| 5 Aug 2024, 09:14 | 97.9 | 97.9% |
| 4 Jul 2024, 10:04 | 97.7 | 97.7% |
| 3 Jun 2024, 10:00 | 103 | 103% |
| 8 May 2024, 09:38 | 104.3 | 104.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.5 mg/l
Sampled 4 Mar 2025, 19 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 15:21 | 12.5 | 12.5 mg/l |
| 12 Feb 2025, 10:16 | 12.9 | 12.9 mg/l |
| 2 Jan 2025, 10:56 | 13.5 | 13.5 mg/l |
| 2 Dec 2024, 14:40 | 11.7 | 11.7 mg/l |
| 1 Nov 2024, 10:06 | 11.4 | 11.4 mg/l |
| 3 Oct 2024, 08:41 | 11.2 | 11.2 mg/l |
| 10 Sep 2024, 09:49 | 10.7 | 10.7 mg/l |
| 5 Aug 2024, 09:14 | 9.91 | 9.91 mg/l |
| 4 Jul 2024, 10:04 | 10.6 | 10.6 mg/l |
| 3 Jun 2024, 10:00 | 10.8 | 10.8 mg/l |
| 8 May 2024, 09:38 | 11.5 | 11.5 mg/l |
Water temperature
code 0076 · °C
7.2 °C
Sampled 4 Mar 2025, 19 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 15:21 | 7.2 | 7.2 °C |
| 12 Feb 2025, 10:16 | 4.8 | 4.8 °C |
| 2 Jan 2025, 10:56 | 2.7 | 2.7 °C |
| 2 Dec 2024, 14:40 | 7.7 | 7.7 °C |
| 1 Nov 2024, 10:06 | 9.2 | 9.2 °C |
| 3 Oct 2024, 08:41 | 9.8 | 9.8 °C |
| 10 Sep 2024, 09:49 | 12.2 | 12.2 °C |
| 5 Aug 2024, 09:14 | 14.7 | 14.7 °C |
| 4 Jul 2024, 10:04 | 11.7 | 11.7 °C |
| 3 Jun 2024, 10:00 | 13.1 | 13.1 °C |
| 8 May 2024, 09:38 | 11 | 11 °C |
pH
code 0061
8.61
Sampled 4 Mar 2025, 19 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 15:21 | 8.61 | 8.61 |
| 12 Feb 2025, 10:16 | 8.52 | 8.52 |
| 2 Jan 2025, 10:56 | 8.92 | 8.92 |
| 2 Dec 2024, 14:40 | 8.82 | 8.82 |
| 1 Nov 2024, 10:06 | 8.37 | 8.37 |
| 3 Oct 2024, 08:41 | 8.79 | 8.79 |
| 10 Sep 2024, 09:49 | 8.83 | 8.83 |
| 5 Aug 2024, 09:14 | 8.8 | 8.8 |
| 4 Jul 2024, 10:04 | 8.79 | 8.79 |
| 3 Jun 2024, 10:00 | 8.88 | 8.88 |
| 8 May 2024, 09:38 | 8.81 | 8.81 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 4 Mar 2025, 19 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 15:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Feb 2025, 10:16 | 0.053 | 0.053 mg/l |
| 2 Jan 2025, 10:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Dec 2024, 14:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Nov 2024, 10:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Oct 2024, 08:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Sep 2024, 09:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Aug 2024, 09:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Jul 2024, 10:04 | 0.04 | 0.04 mg/l |
| 3 Jun 2024, 10:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 May 2024, 09:38 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.89 mg/l
Sampled 4 Mar 2025, 19 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 15:21 | 2.89 | 2.89 mg/l |
| 12 Feb 2025, 10:16 | 4.29 | 4.29 mg/l |
| 2 Jan 2025, 10:56 | 3.09 | 3.09 mg/l |
| 2 Dec 2024, 14:40 | 2.39 | 2.39 mg/l |
| 1 Nov 2024, 10:06 | 2.7 | 2.7 mg/l |
| 3 Oct 2024, 08:41 | 4.89 | 4.89 mg/l |
| 10 Sep 2024, 09:49 | 3.6 | 3.6 mg/l |
| 5 Aug 2024, 09:14 | 2.49 | 2.49 mg/l |
| 4 Jul 2024, 10:04 | 2.3 | 2.3 mg/l |
| 3 Jun 2024, 10:00 | 4.09 | 4.09 mg/l |
| 8 May 2024, 09:38 | 2.89 | 2.89 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.02 mg/l
Sampled 4 Mar 2025, 19 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 15:21 | 0.02 | 0.02 mg/l |
| 12 Feb 2025, 10:16 | 0.042 | 0.042 mg/l |
| 2 Jan 2025, 10:56 | 0.063 | 0.063 mg/l |
| 1 Nov 2024, 10:06 | 0.11 | 0.11 mg/l |
| 3 Oct 2024, 08:41 | 0.22 | 0.22 mg/l |
| 10 Sep 2024, 09:49 | 0.43 | 0.43 mg/l |
| 5 Aug 2024, 09:14 | 0.12 | 0.12 mg/l |
| 4 Jul 2024, 10:04 | 0.13 | 0.13 mg/l |
| 3 Jun 2024, 10:00 | 0.056 | 0.056 mg/l |
| 8 May 2024, 09:38 | 0.054 | 0.054 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1133 µS/cm
Sampled 4 Mar 2025, 19 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 15:21 | 1133 | 1133 µS/cm |
| 12 Feb 2025, 10:16 | 905 | 905 µS/cm |
| 2 Jan 2025, 10:56 | 1182 | 1182 µS/cm |
| 2 Dec 2024, 14:40 | 1089 | 1089 µS/cm |
| 1 Nov 2024, 10:06 | 1180 | 1180 µS/cm |
| 3 Oct 2024, 08:41 | 821 | 821 µS/cm |
| 10 Sep 2024, 09:49 | 1107 | 1107 µS/cm |
| 5 Aug 2024, 09:14 | 1261 | 1261 µS/cm |
| 4 Jul 2024, 10:04 | 1178 | 1178 µS/cm |
| 3 Jun 2024, 10:00 | 1301 | 1301 µS/cm |
| 8 May 2024, 09:38 | 1318 | 1318 µS/cm |
E. coli
confirmed, membrane filtration · code 2348 · per 100 ml
2000 per 100 ml
Sampled 15 Sep 2026, 16 days ago · 37 results banked
Every result (37)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 11:30 | 2000 | 2000 per 100 ml |
| 9 Sep 2026, 12:50 | 4700 | 4700 per 100 ml |
| 1 Sep 2026, 13:05 | 10000 | 10000 per 100 ml |
| 26 Aug 2026, 12:30 | 28000 | 28000 per 100 ml |
| 19 Aug 2026, 12:25 | 11000 | 11000 per 100 ml |
| 9 Aug 2026, 12:25 | 10000 | 10000 per 100 ml |
| 3 Aug 2026, 12:30 | 23000 | 23000 per 100 ml |
| 28 Jul 2026, 12:30 | 2600 | 2600 per 100 ml |
| 20 Jul 2026, 13:10 | 6300 | 6300 per 100 ml |
| 13 Jul 2026, 11:40 | 2400 | 2400 per 100 ml |
| 2 Jul 2026, 12:30 | 8900 | 8900 per 100 ml |
| 22 Jun 2026, 12:00 | 2200 | 2200 per 100 ml |
| 15 Jun 2026, 10:45 | 3300 | 3300 per 100 ml |
| 8 Jun 2026, 12:05 | 650 | 650 per 100 ml |
| 28 May 2026, 13:25 | >100000 | above 100000 per 100 ml (the most the test can count) |
| 22 May 2026, 12:30 | 230 | 230 per 100 ml |
| 15 May 2026, 12:15 | 540 | 540 per 100 ml |
| 15 Sep 2025, 11:10 | 45000 | 45000 per 100 ml |
| 11 Sep 2025, 11:34 | 17000 | 17000 per 100 ml |
| 7 Sep 2025, 11:45 | 590 | 590 per 100 ml |
| 27 Aug 2025, 11:25 | 36 | 36 per 100 ml |
| 20 Aug 2025, 10:55 | 5900 | 5900 per 100 ml |
| 12 Aug 2025, 11:45 | 470000 | 470000 per 100 ml |
| 5 Aug 2025, 11:17 | 7700 | 7700 per 100 ml |
| 30 Jul 2025, 11:40 | 10000 | 10000 per 100 ml |
| 21 Jul 2025, 11:25 | 1800 | 1800 per 100 ml |
| 15 Jul 2025, 11:20 | >100000 | above 100000 per 100 ml (the most the test can count) |
| 10 Jul 2025, 11:25 | 880 | 880 per 100 ml |
| 4 Jul 2025, 11:20 | 2700 | 2700 per 100 ml |
| 25 Jun 2025, 11:35 | 850 | 850 per 100 ml |
| 21 Jun 2025, 11:20 | 5700 | 5700 per 100 ml |
| 11 Jun 2025, 11:30 | 800 | 800 per 100 ml |
| 3 Jun 2025, 11:40 | 1300 | 1300 per 100 ml |
| 29 May 2025, 11:00 | 4900 | 4900 per 100 ml |
| 20 May 2025, 10:55 | 210 | 210 per 100 ml |
| 16 May 2025, 11:35 | 230 | 230 per 100 ml |
| 9 May 2025, 13:50 | 420 | 420 per 100 ml |
Everything measured here
18 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 18 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 11 | May 2024 – Mar 2025 | 103.6% 4 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 11 | May 2024 – Mar 2025 | 12.5 mg/l 4 Mar 2025 |
| Temperature of Water 0076 | River water | 11 | May 2024 – Mar 2025 | 7.2 °C 4 Mar 2025 |
| pH 0061 | River water | 11 | May 2024 – Mar 2025 | 8.61 4 Mar 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 11 | May 2024 – Mar 2025 | below 0.03 mg/l 4 Mar 2025 |
| Nitrate as N 0117 | River water | 11 | May 2024 – Mar 2025 | 2.89 mg/l 4 Mar 2025 |
| Orthophosphate, reactive as P 0180 | River water | 10 | May 2024 – Mar 2025 | 0.02 mg/l 4 Mar 2025 |
| Conductivity at 25 C 0077 | River water | 11 | May 2024 – Mar 2025 | 1133 µS/cm 4 Mar 2025 |
| Escherichia coli : Confirmed : MF 2348 | River water | 37 | May 2025 – Sep 2026 | 2000 per 100 ml 15 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 11 | May 2024 – Mar 2025 | 280 mg/l 4 Mar 2025 |
| Ammonia un-ionised as N 0119 | River water | 11 | May 2024 – Mar 2025 | below 0.00045 mg/l 4 Mar 2025 |
| Enterococci: Intestinal: Confirmed: MF 3723 | River water | 37 | May 2025 – Sep 2026 | 2000 colony forming units / 100ml 15 Sep 2026 |
| Enterococci: Intestinal: Presumptive: MF 3722 | River water | 37 | May 2025 – Sep 2026 | 2000 colony forming units / 100ml 15 Sep 2026 |
| MST Filtration 4926 | River water | 38 | May 2025 – Sep 2026 | DNA Stored 15 Sep 2026 |
| Nitrite as N 0118 | River water | 11 | May 2024 – Mar 2025 | 0.0062 mg/l 4 Mar 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 11 | May 2024 – Mar 2025 | 2.9 mg/l 4 Mar 2025 |
| No flow /No sample 7668 | River water | 1 | Aug 2026 – Aug 2026 | No flow/discharge at sampling point 14 Aug 2026 |
| Volume of Sample Filtered 4865 | River water | 38 | May 2025 – Sep 2026 | 520 millilitre 15 Sep 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.