S. Frome Dolphin Bridge
EA name: S. FROME DOLPHIN BR. (also listed as “DOLPHIN BRIDGE D/S FROME S/W.”)
Environment Agency sampling point SW-A1260201 · 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
- 21 Sep 2026, 12:2810 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 51 since 5 Oct 2023 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) · results completed 25 Sep 2026
- Where
- National Grid 377246, 149589As published, to the nearest 1 m. Open in a map
- River, by its own name
- Frome
- River, by the map
- River FromePlaced on the river its name gives, 18 m from the line.
- Next gauge downstream
- Tellisford On the Somerset Frome · 10 km along the river
- Nearest gauge upstream
- FROME RODDEN BRIDGE 3.2 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (44 samples)
Environmental monitoring statutory (EU directives) (7 samples)
Results here were completed a median of 4 days after the sample was taken (4 to 14 days, 26 samples).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
99.2%
Sampled 5 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2024, 11:52 | 99.2 | 99.2% |
| 7 Feb 2024, 10:36 | 83.1 | 83.1% |
| 17 Jan 2024, 11:29 | 94.5 | 94.5% |
| 6 Dec 2023, 14:19 | 99.2 | 99.2% |
| 16 Nov 2023, 11:59 | 97 | 97% |
| 1 Nov 2023, 11:36 | 99.2 | 99.2% |
| 5 Oct 2023, 11:55 | 89.6 | 89.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12 mg/l
Sampled 5 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2024, 11:52 | 12 | 12 mg/l |
| 7 Feb 2024, 10:36 | 9.73 | 9.73 mg/l |
| 17 Jan 2024, 11:29 | 12.2 | 12.2 mg/l |
| 6 Dec 2023, 14:19 | 12.1 | 12.1 mg/l |
| 16 Nov 2023, 11:59 | 11 | 11 mg/l |
| 1 Nov 2023, 11:36 | 10.6 | 10.6 mg/l |
| 5 Oct 2023, 11:55 | 9.09 | 9.09 mg/l |
Water temperature
code 0076 · °C
7.1 °C
Sampled 5 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2024, 11:52 | 7.1 | 7.1 °C |
| 7 Feb 2024, 10:36 | 8.4 | 8.4 °C |
| 17 Jan 2024, 11:29 | 4.4 | 4.4 °C |
| 6 Dec 2023, 14:19 | 6.8 | 6.8 °C |
| 16 Nov 2023, 11:59 | 9.8 | 9.8 °C |
| 1 Nov 2023, 11:36 | 12.4 | 12.4 °C |
| 5 Oct 2023, 11:55 | 14.6 | 14.6 °C |
pH
code 0061
7.88
Sampled 5 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2024, 11:52 | 7.88 | 7.88 |
| 7 Feb 2024, 10:36 | 7.69 | 7.69 |
| 17 Jan 2024, 11:29 | 7.98 | 7.98 |
| 6 Dec 2023, 14:19 | 7.87 | 7.87 |
| 16 Nov 2023, 11:59 | 7.78 | 7.78 |
| 1 Nov 2023, 11:36 | 7.79 | 7.79 |
| 5 Oct 2023, 11:55 | 7.89 | 7.89 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.24 mg/l
Sampled 5 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2024, 11:52 | 0.24 | 0.24 mg/l |
| 7 Feb 2024, 10:36 | 0.19 | 0.19 mg/l |
| 17 Jan 2024, 11:29 | 0.64 | 0.64 mg/l |
| 6 Dec 2023, 14:19 | 0.29 | 0.29 mg/l |
| 16 Nov 2023, 11:59 | 0.46 | 0.46 mg/l |
| 1 Nov 2023, 11:36 | 0.25 | 0.25 mg/l |
| 5 Oct 2023, 11:55 | 0.25 | 0.25 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.88 mg/l
Sampled 5 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2024, 11:52 | 2.88 | 2.88 mg/l |
| 7 Feb 2024, 10:36 | 1.78 | 1.78 mg/l |
| 17 Jan 2024, 11:29 | 6.82 | 6.82 mg/l |
| 6 Dec 2023, 14:19 | 3.46 | 3.46 mg/l |
| 16 Nov 2023, 11:59 | 3.36 | 3.36 mg/l |
| 1 Nov 2023, 11:36 | 2.57 | 2.57 mg/l |
| 5 Oct 2023, 11:55 | 6.52 | 6.52 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.12 mg/l
Sampled 5 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2024, 11:52 | 0.12 | 0.12 mg/l |
| 7 Feb 2024, 10:36 | 0.13 | 0.13 mg/l |
| 17 Jan 2024, 11:29 | 0.14 | 0.14 mg/l |
| 6 Dec 2023, 14:19 | 0.091 | 0.091 mg/l |
| 16 Nov 2023, 11:59 | 0.089 | 0.089 mg/l |
| 1 Nov 2023, 11:36 | 0.11 | 0.11 mg/l |
| 5 Oct 2023, 11:55 | 0.16 | 0.16 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
381 µS/cm
Sampled 5 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2024, 11:52 | 381 | 381 µS/cm |
| 7 Feb 2024, 10:36 | 223 | 223 µS/cm |
| 17 Jan 2024, 11:29 | 545 | 545 µS/cm |
| 6 Dec 2023, 14:19 | 405 | 405 µS/cm |
| 16 Nov 2023, 11:59 | 404 | 404 µS/cm |
| 1 Nov 2023, 11:36 | 347 | 347 µS/cm |
| 5 Oct 2023, 11:55 | 542 | 542 µS/cm |
E. coli
confirmed, membrane filtration · code 2348 · per 100 ml
7400 per 100 ml
Sampled 21 Sep 2026, 10 days ago · 44 results banked
Every result (44)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 12:28 | 7400 | 7400 per 100 ml |
| 15 Sep 2026, 13:57 | 8600 | 8600 per 100 ml |
| 9 Sep 2026, 14:27 | 6800 | 6800 per 100 ml |
| 3 Sep 2026, 12:47 | 2900 | 2900 per 100 ml |
| 21 Aug 2026, 13:13 | 5000 | 5000 per 100 ml |
| 13 Aug 2026, 12:39 | 2800 | 2800 per 100 ml |
| 9 Aug 2026, 13:26 | 3000 | 3000 per 100 ml |
| 7 Aug 2026, 12:29 | 2300 | 2300 per 100 ml |
| 28 Jul 2026, 10:57 | 13000 | 13000 per 100 ml |
| 20 Jul 2026, 11:33 | 6200 | 6200 per 100 ml |
| 14 Jul 2026, 13:37 | 3000 | 3000 per 100 ml |
| 8 Jul 2026, 15:08 | 5700 | 5700 per 100 ml |
| 2 Jul 2026, 10:21 | 17000 | 17000 per 100 ml |
| 26 Jun 2026, 12:30 | 2800 | 2800 per 100 ml |
| 15 Jun 2026, 16:14 | 6200 | 6200 per 100 ml |
| 12 Jun 2026, 13:32 | 3600 | 3600 per 100 ml |
| 7 Jun 2026, 12:49 | 6600 | 6600 per 100 ml |
| 4 Jun 2026, 13:18 | 22000 | 22000 per 100 ml |
| 27 May 2026, 11:09 | 1200 | 1200 per 100 ml |
| 19 May 2026, 11:32 | 6000 | 6000 per 100 ml |
| 24 Sep 2025, 11:00 | 6400 | 6400 per 100 ml |
| 15 Sep 2025, 14:26 | 9600 | 9600 per 100 ml |
| 10 Sep 2025, 14:23 | 22000 | 22000 per 100 ml |
| 2 Sep 2025, 13:55 | 24000 | 24000 per 100 ml |
| 1 Sep 2025, 13:55 | 5500 | 5500 per 100 ml |
| 28 Aug 2025, 10:07 | 4200 | 4200 per 100 ml |
| 17 Aug 2025, 12:26 | 4900 | 4900 per 100 ml |
| 7 Aug 2025, 12:10 | 2600 | 2600 per 100 ml |
| 1 Aug 2025, 13:39 | 3100 | 3100 per 100 ml |
| 23 Jul 2025, 13:56 | 6400 | 6400 per 100 ml |
| 17 Jul 2025, 10:10 | 4400 | 4400 per 100 ml |
| 7 Jul 2025, 15:18 | 11000 | 11000 per 100 ml |
| 1 Jul 2025, 14:31 | 4200 | 4200 per 100 ml |
| 25 Jun 2025, 13:59 | 2100 | 2100 per 100 ml |
| 21 Jun 2025, 10:22 | 2200 | 2200 per 100 ml |
| 12 Jun 2025, 14:00 | 73000 | 73000 per 100 ml |
| 10 Jun 2025, 14:47 | 6500 | 6500 per 100 ml |
| 3 Jun 2025, 13:55 | 7000 | 7000 per 100 ml |
| 2 Jun 2025, 10:21 | 2700 | 2700 per 100 ml |
| 30 May 2025, 09:42 | 2800 | 2800 per 100 ml |
| 28 May 2025, 14:00 | 6100 | 6100 per 100 ml |
| 19 May 2025, 10:02 | 1500 | 1500 per 100 ml |
| 16 May 2025, 09:43 | 1500 | 1500 per 100 ml |
| 1 May 2025, 13:37 | 7400 | 7400 per 100 ml |
Everything measured here
20 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 20 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 7 | Oct 2023 – Mar 2024 | 99.2% 5 Mar 2024 |
| Oxygen, Dissolved as O2 9924 | River water | 7 | Oct 2023 – Mar 2024 | 12 mg/l 5 Mar 2024 |
| Temperature of Water 0076 | River water | 7 | Oct 2023 – Mar 2024 | 7.1 °C 5 Mar 2024 |
| pH 0061 | River water | 7 | Oct 2023 – Mar 2024 | 7.88 5 Mar 2024 |
| Ammoniacal Nitrogen as N 0111 | River water | 7 | Oct 2023 – Mar 2024 | 0.24 mg/l 5 Mar 2024 |
| Nitrate as N 0117 | River water | 7 | Oct 2023 – Mar 2024 | 2.88 mg/l 5 Mar 2024 |
| Orthophosphate, reactive as P 0180 | River water | 7 | Oct 2023 – Mar 2024 | 0.12 mg/l 5 Mar 2024 |
| Conductivity at 25 C 0077 | River water | 7 | Oct 2023 – Mar 2024 | 381 µS/cm 5 Mar 2024 |
| Escherichia coli : Confirmed : MF 2348 | River water | 44 | May 2025 – Sep 2026 | 7400 per 100 ml 21 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 7 | Oct 2023 – Mar 2024 | 140 mg/l 5 Mar 2024 |
| Ammonia un-ionised as N 0119 | River water | 7 | Oct 2023 – Mar 2024 | 0.00269 mg/l 5 Mar 2024 |
| Cadmium, Dissolved 0106 | River water | 2 | Oct 2023 – Jan 2024 | 0.018 µg/l 17 Jan 2024 |
| Calcium, Dissolved 0239 | River water | 2 | Oct 2023 – Jan 2024 | 83 mg/l 17 Jan 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 2 | Oct 2023 – Jan 2024 | 4.6 mg/l 17 Jan 2024 |
| Enterococci: Intestinal: Presumptive: MF 3722 | River water | 44 | May 2025 – Sep 2026 | 490 colony forming units / 100ml 21 Sep 2026 |
| Magnesium, Dissolved 0235 | River water | 2 | Oct 2023 – Jan 2024 | 4.2 mg/l 17 Jan 2024 |
| MST Filtration 4926 | River water | 43 | May 2025 – Sep 2026 | DNA Stored 21 Sep 2026 |
| Nitrite as N 0118 | River water | 7 | Oct 2023 – Mar 2024 | 0.024 mg/l 5 Mar 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 7 | Oct 2023 – Mar 2024 | 2.9 mg/l 5 Mar 2024 |
| Volume of Sample Filtered 4865 | River water | 43 | May 2025 – Sep 2026 | 860 millilitre 21 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.