River Thurne Martham Broad
EA name: R.THURNE MARTHAM BROAD
Environment Agency sampling point AN-THR060 · 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 Jul 2026, 11:492 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 32 since 10 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 645900, 320400As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Thurne
- River, by the map
- River ThurnePlaced on the river its name gives, 147 m from the line.
- Next gauge downstream
- Repps On the River Thurne · 6.0 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (29 samples)
Environmental monitoring statutory (EU directives) (3 samples)
2 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
78.8%
Sampled 22 Jul 2026, 2 months ago · 13 results banked
Also measured in percentage on another sample material (2GZZ): 15 results, kept apart (see the table).
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 11:49 | 78.8 | 78.8% |
| 15 Jun 2026, 13:12 | 80.5 | 80.5% |
| 24 Apr 2026, 14:32 | 114.2 | 114.2% |
| 18 Mar 2026, 13:03 | 110.9 | 110.9% |
| 21 Jan 2026, 11:52 | 95.1 | 95.1% |
| 27 Nov 2025, 12:31 | 91.5 | 91.5% |
| 22 Oct 2025, 12:15 | 74.4 | 74.4% |
| 18 Sep 2025, 12:49 | 80 | 80% |
| 20 Aug 2025, 12:39 | 71.2 | 71.2% |
| 23 Jul 2025, 11:49 | 48.9 | 48.9% |
| 17 Jun 2025, 12:23 | 93 | 93% |
| 22 May 2025, 14:08 | 118.2 | 118.2% |
| 24 Apr 2025, 13:00 | 115.7 | 115.7% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.23 mg/l
Sampled 22 Jul 2026, 2 months ago · 13 results banked
Also measured in milligram per litre on another sample material (2GZZ): 15 results, kept apart (see the table).
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 11:49 | 7.23 | 7.23 mg/l |
| 15 Jun 2026, 13:12 | 7.38 | 7.38 mg/l |
| 24 Apr 2026, 14:32 | 11.6 | 11.6 mg/l |
| 18 Mar 2026, 13:03 | 12 | 12 mg/l |
| 21 Jan 2026, 11:52 | 11.6 | 11.6 mg/l |
| 27 Nov 2025, 12:31 | 11.2 | 11.2 mg/l |
| 22 Oct 2025, 12:15 | 7.66 | 7.66 mg/l |
| 18 Sep 2025, 12:49 | 7.73 | 7.73 mg/l |
| 20 Aug 2025, 12:39 | 6.52 | 6.52 mg/l |
| 23 Jul 2025, 11:49 | 4.32 | 4.32 mg/l |
| 17 Jun 2025, 12:23 | 8.02 | 8.02 mg/l |
| 22 May 2025, 14:08 | 10.9 | 10.9 mg/l |
| 24 Apr 2025, 13:00 | 11.6 | 11.6 mg/l |
Water temperature
code 0076 · °C
18.6 °C
Sampled 22 Jul 2026, 2 months ago · 13 results banked
Also measured in celsius on another sample material (2GZZ): 15 results, kept apart (see the table).
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 11:49 | 18.6 | 18.6 °C |
| 15 Jun 2026, 13:12 | 18.6 | 18.6 °C |
| 24 Apr 2026, 14:32 | 13.9 | 13.9 °C |
| 18 Mar 2026, 13:03 | 11 | 11 °C |
| 21 Jan 2026, 11:52 | 6 | 6 °C |
| 27 Nov 2025, 12:31 | 5.9 | 5.9 °C |
| 22 Oct 2025, 12:15 | 12.8 | 12.8 °C |
| 18 Sep 2025, 12:49 | 16.2 | 16.2 °C |
| 20 Aug 2025, 12:39 | 18.8 | 18.8 °C |
| 23 Jul 2025, 11:49 | 20.6 | 20.6 °C |
| 17 Jun 2025, 12:23 | 21.7 | 21.7 °C |
| 22 May 2025, 14:08 | 17.8 | 17.8 °C |
| 24 Apr 2025, 13:00 | 14.3 | 14.3 °C |
pH
code 0061
7.65
Sampled 22 Jul 2026, 2 months ago · 13 results banked
Also measured in ph units on another sample material (2GZZ): 15 results, kept apart (see the table).
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 11:49 | 7.65 | 7.65 |
| 15 Jun 2026, 13:12 | 7.76 | 7.76 |
| 24 Apr 2026, 14:32 | 8.17 | 8.17 |
| 18 Mar 2026, 13:03 | 8.1 | 8.1 |
| 21 Jan 2026, 11:52 | 7.75 | 7.75 |
| 27 Nov 2025, 12:31 | 7.72 | 7.72 |
| 22 Oct 2025, 12:15 | 7.58 | 7.58 |
| 18 Sep 2025, 12:49 | 7.8 | 7.8 |
| 20 Aug 2025, 12:39 | 7.61 | 7.61 |
| 23 Jul 2025, 11:49 | 7.52 | 7.52 |
| 17 Jun 2025, 12:23 | 7.85 | 7.85 |
| 22 May 2025, 14:08 | 8.14 | 8.14 |
| 24 Apr 2025, 13:00 | 8.12 | 8.12 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 22 Jul 2026, 2 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 11:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jun 2026, 13:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Apr 2026, 14:32 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
below 0.196 mg/l (not detected above this)
Sampled 22 Jul 2026, 2 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 11:49 | <0.196 | below 0.196 mg/l (not detected above this) |
| 15 Jun 2026, 13:12 | <0.196 | below 0.196 mg/l (not detected above this) |
| 24 Apr 2026, 14:32 | <0.196 | below 0.196 mg/l (not detected above this) |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
below 0.01 mg/l (not detected above this)
Sampled 22 Jul 2026, 2 months ago · 3 results banked
Also measured in milligram per litre on another sample material (2GZZ): 2 results, kept apart (see the table).
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 11:49 | <0.01 | below 0.01 mg/l (not detected above this) |
| 15 Jun 2026, 13:12 | <0.01 | below 0.01 mg/l (not detected above this) |
| 24 Apr 2026, 14:32 | <0.01 | below 0.01 mg/l (not detected above this) |
Conductivity
at 25 °C · code 0077 · µS/cm
5771 µS/cm
Sampled 22 Jul 2026, 2 months ago · 13 results banked
Also measured in microsiemens per centimetre on another sample material (2GZZ): 15 results, kept apart (see the table).
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 11:49 | 5771 | 5771 µS/cm |
| 15 Jun 2026, 13:12 | 6540 | 6540 µS/cm |
| 24 Apr 2026, 14:32 | 5972 | 5972 µS/cm |
| 18 Mar 2026, 13:03 | 5022 | 5022 µS/cm |
| 21 Jan 2026, 11:52 | 5585 | 5585 µS/cm |
| 27 Nov 2025, 12:31 | 6222 | 6222 µS/cm |
| 22 Oct 2025, 12:15 | 10130 | 10130 µS/cm |
| 18 Sep 2025, 12:49 | 5353 | 5353 µS/cm |
| 20 Aug 2025, 12:39 | 5509 | 5509 µS/cm |
| 23 Jul 2025, 11:49 | 5501 | 5501 µS/cm |
| 17 Jun 2025, 12:23 | 6139 | 6139 µS/cm |
| 22 May 2025, 14:08 | 8059 | 8059 µS/cm |
| 24 Apr 2025, 13:00 | 6057 | 6057 µS/cm |
Everything measured here
28 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 45 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 13 | Apr 2025 – Jul 2026 | 78.8% 22 Jul 2026 |
| Oxygen, Dissolved, % Saturation 9901 | Pond / lake / reservoir water | 15 | Oct 2023 – Mar 2025 | 122.4% 21 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 13 | Apr 2025 – Jul 2026 | 7.23 mg/l 22 Jul 2026 |
| Oxygen, Dissolved as O2 9924 | Pond / lake / reservoir water | 15 | Oct 2023 – Mar 2025 | 13.2 mg/l 21 Mar 2025 |
| Temperature of Water 0076 | River water | 13 | Apr 2025 – Jul 2026 | 18.6 °C 22 Jul 2026 |
| Temperature of Water 0076 | Pond / lake / reservoir water | 15 | Oct 2023 – Mar 2025 | 11.2 °C 21 Mar 2025 |
| pH 0061 | River water | 13 | Apr 2025 – Jul 2026 | 7.65 22 Jul 2026 |
| pH 0061 | Pond / lake / reservoir water | 15 | Oct 2023 – Mar 2025 | 8.11 21 Mar 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 3 | Apr 2026 – Jul 2026 | below 0.03 mg/l 22 Jul 2026 |
| Nitrate as N 0117 | River water | 3 | Apr 2026 – Jul 2026 | below 0.196 mg/l 22 Jul 2026 |
| Orthophosphate, reactive as P 0180 | River water | 3 | Apr 2026 – Jul 2026 | below 0.01 mg/l 22 Jul 2026 |
| Orthophosphate, reactive as P 0180 | Pond / lake / reservoir water | 2 | Oct 2023 – Feb 2024 | below 0.01 mg/l 28 Feb 2024 |
| Conductivity at 25 C 0077 | River water | 13 | Apr 2025 – Jul 2026 | 5771 µS/cm 22 Jul 2026 |
| Conductivity at 25 C 0077 | Pond / lake / reservoir water | 15 | Oct 2023 – Mar 2025 | 5343 µS/cm 21 Mar 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 3 | Apr 2026 – Jul 2026 | 140 mg/l 22 Jul 2026 |
| Alkalinity, Dissolved as CaCO3 7867 | River water | 3 | Apr 2026 – Jul 2026 | 140 mg/l 22 Jul 2026 |
| Ammonia un-ionised as N 0119 | River water | 3 | Apr 2026 – Jul 2026 | below 0.00047 mg/l 22 Jul 2026 |
| Ammoniacal Nitrogen, Filtered as N 9993 | River water | 13 | Apr 2025 – Jul 2026 | below 0.03 mg/l 22 Jul 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 3 | Apr 2026 – Jul 2026 | 12 mg/l 22 Jul 2026 |
| Chloride 0172 | River water | 13 | Apr 2025 – Jul 2026 | 1700 mg/l 22 Jul 2026 |
| Chloride, GF/C Filtered 7190 | River water | 3 | Apr 2026 – Jul 2026 | 1700 mg/l 22 Jul 2026 |
| Chlorophyll : Acetone Extract 7887 | River water | 10 | Apr 2025 – Jul 2026 | 7.1 µg/l 22 Jul 2026 |
| Nitrite as N 0118 | River water | 3 | Apr 2026 – Jul 2026 | below 0.004 mg/l 22 Jul 2026 |
| Nitrite, Filtered as N 6485 | River water | 3 | Apr 2026 – Jul 2026 | below 0.004 mg/l 22 Jul 2026 |
| Nitrogen, Total as N 9686 | River water | 3 | Apr 2026 – Jul 2026 | 1.1 mg/l 22 Jul 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 3 | Apr 2026 – Jul 2026 | below 0.2 mg/l 22 Jul 2026 |
| Nitrogen, Total Oxidised, Filtered as N 9943 | River water | 13 | Apr 2025 – Jul 2026 | below 0.2 mg/l 22 Jul 2026 |
| No flow /No sample 7668 | River water | 2 | Dec 2025 – Feb 2026 | No flow/discharge at sampling point 20 Feb 2026 |
| Orthophosphate, Filtered as P 9856 | River water | 13 | Apr 2025 – Jul 2026 | 0.0044 mg/l 22 Jul 2026 |
| Phosphorus, Total as P 0348 | River water | 13 | Apr 2025 – Jul 2026 | 0.015 mg/l 22 Jul 2026 |
| Silicate, Filtered as SiO2 9857 | River water | 13 | Apr 2025 – Jul 2026 | 6.2 mg/l 22 Jul 2026 |
| Solids, non-volatile at 500 C 0143 | River water | 13 | Apr 2025 – Jul 2026 | below 20 mg/l 22 Jul 2026 |
| Solids, Suspended at 105 C 0135 | River water | 13 | Apr 2025 – Jul 2026 | 3.5 mg/l 22 Jul 2026 |
| Transparency 0067 | River water | 13 | Apr 2025 – Jul 2026 | 1.3 metre 22 Jul 2026 |
| Ammoniacal Nitrogen, Filtered as N 9993 | Pond / lake / reservoir water | 15 | Oct 2023 – Mar 2025 | below 0.03 mg/l 21 Mar 2025 |
| Chloride 0172 | Pond / lake / reservoir water | 15 | Oct 2023 – Mar 2025 | 1500 mg/l 21 Mar 2025 |
| Chlorophyll : Acetone Extract 7887 | Pond / lake / reservoir water | 14 | Oct 2023 – Mar 2025 | 15 µg/l 21 Mar 2025 |
| Nitrogen, Total as N 9686 | Pond / lake / reservoir water | 2 | Oct 2023 – Feb 2024 | 2.4 mg/l 28 Feb 2024 |
| Nitrogen, Total Oxidised, Filtered as N 9943 | Pond / lake / reservoir water | 15 | Oct 2023 – Mar 2025 | 0.37 mg/l 21 Mar 2025 |
| Orthophosphate, Filtered as P 9856 | Pond / lake / reservoir water | 15 | Oct 2023 – Mar 2025 | 0.0039 mg/l 21 Mar 2025 |
| Phosphorus, Total as P 0348 | Pond / lake / reservoir water | 15 | Oct 2023 – Mar 2025 | below 0.01 mg/l 21 Mar 2025 |
| Silicate, Filtered as SiO2 9857 | Pond / lake / reservoir water | 15 | Oct 2023 – Mar 2025 | 5.5 mg/l 21 Mar 2025 |
| Solids, non-volatile at 500 C 0143 | Pond / lake / reservoir water | 17 | Oct 2023 – Mar 2025 | below 20 mg/l 21 Mar 2025 |
| Solids, Suspended at 105 C 0135 | Pond / lake / reservoir water | 17 | Oct 2023 – Mar 2025 | 4.1 mg/l 21 Mar 2025 |
| Transparency 0067 | Pond / lake / reservoir water | 14 | Oct 2023 – Mar 2025 | 1.1 metre 21 Mar 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.