Limb Brook at B4449, near Eynsham
EA name: LIMB BROOK AT B4449, NR EYNSHAM
Environment Agency sampling point TH-PTHR0217 · 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 Aug 2026, 13:0441 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 5 since 29 Apr 2026 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 441933, 207635As published, to the nearest 1 m. Open in a map
- River, by its own name
- Limb Brook
- River, by the map
- Limb BrookPlaced on the river its name gives, 6 m from the line.
- Next gauge downstream
- Kings Lock On the River Thames · 8.0 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (5 samples)
1 visit found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
82.9%
Sampled 28 Jul 2026, 2 months ago · 4 results banked
Every result (4)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Jul 2026, 12:51 | 82.9 | 82.9% |
| 15 Jun 2026, 11:05 | 87.2 | 87.2% |
| 15 May 2026, 10:26 | 86.7 | 86.7% |
| 29 Apr 2026, 11:28 | 92.9 | 92.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.72 mg/l
Sampled 28 Jul 2026, 2 months ago · 4 results banked
Every result (4)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Jul 2026, 12:51 | 7.72 | 7.72 mg/l |
| 15 Jun 2026, 11:05 | 9 | 9 mg/l |
| 15 May 2026, 10:26 | 10.1 | 10.1 mg/l |
| 29 Apr 2026, 11:28 | 10.3 | 10.3 mg/l |
Water temperature
code 0076 · °C
18.7 °C
Sampled 28 Jul 2026, 2 months ago · 4 results banked
Every result (4)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Jul 2026, 12:51 | 18.7 | 18.7 °C |
| 15 Jun 2026, 11:05 | 13.8 | 13.8 °C |
| 15 May 2026, 10:26 | 8.8 | 8.8 °C |
| 29 Apr 2026, 11:28 | 10.7 | 10.7 °C |
pH
code 0061
7.93
Sampled 28 Jul 2026, 2 months ago · 4 results banked
Every result (4)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Jul 2026, 12:51 | 7.93 | 7.93 |
| 15 Jun 2026, 11:05 | 7.83 | 7.83 |
| 15 May 2026, 10:26 | 7.86 | 7.86 |
| 29 Apr 2026, 11:28 | 7.97 | 7.97 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.032 mg/l
Sampled 28 Jul 2026, 2 months ago · 4 results banked
Every result (4)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Jul 2026, 12:51 | 0.032 | 0.032 mg/l |
| 15 Jun 2026, 11:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 May 2026, 10:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Apr 2026, 11:28 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
18 mg/l
Sampled 28 Jul 2026, 2 months ago · 4 results banked
Every result (4)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Jul 2026, 12:51 | 18 | 18 mg/l |
| 15 Jun 2026, 11:05 | 11 | 11 mg/l |
| 15 May 2026, 10:26 | 12 | 12 mg/l |
| 29 Apr 2026, 11:28 | 12 | 12 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.051 mg/l
Sampled 28 Jul 2026, 2 months ago · 4 results banked
Every result (4)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Jul 2026, 12:51 | 0.051 | 0.051 mg/l |
| 15 Jun 2026, 11:05 | 0.051 | 0.051 mg/l |
| 15 May 2026, 10:26 | 0.029 | 0.029 mg/l |
| 29 Apr 2026, 11:28 | 0.024 | 0.024 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
643 µS/cm
Sampled 28 Jul 2026, 2 months ago · 4 results banked
Every result (4)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Jul 2026, 12:51 | 643 | 643 µS/cm |
| 15 Jun 2026, 11:05 | 666 | 666 µS/cm |
| 15 May 2026, 10:26 | 671 | 671 µS/cm |
| 29 Apr 2026, 11:28 | 675 | 675 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 | 4 | Apr 2026 – Jul 2026 | 82.9% 28 Jul 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 4 | Apr 2026 – Jul 2026 | 7.72 mg/l 28 Jul 2026 |
| Temperature of Water 0076 | River water | 4 | Apr 2026 – Jul 2026 | 18.7 °C 28 Jul 2026 |
| pH 0061 | River water | 4 | Apr 2026 – Jul 2026 | 7.93 28 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 4 | Apr 2026 – Jul 2026 | 0.032 mg/l 28 Jul 2026 |
| Nitrate as N 0117 | River water | 4 | Apr 2026 – Jul 2026 | 18 mg/l 28 Jul 2026 |
| Orthophosphate, reactive as P 0180 | River water | 4 | Apr 2026 – Jul 2026 | 0.051 mg/l 28 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 4 | Apr 2026 – Jul 2026 | 643 µS/cm 28 Jul 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 4 | Apr 2026 – Jul 2026 | 240 mg/l 28 Jul 2026 |
| Ammonia un-ionised as N 0119 | River water | 4 | Apr 2026 – Jul 2026 | 0.00094 mg/l 28 Jul 2026 |
| Nitrite as N 0118 | River water | 4 | Apr 2026 – Jul 2026 | 0.036 mg/l 28 Jul 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 4 | Apr 2026 – Jul 2026 | 18 mg/l 28 Jul 2026 |
| No flow /No sample 7668 | River water | 1 | Aug 2026 – Aug 2026 | No flow/discharge at sampling point 21 Aug 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.