Counterdrain A142 Road Bridge Mepal
EA name: COUNTERDRAIN A142 RD.BR.MEPAL
Environment Agency sampling point AN-52M13 · 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
- 2 Sep 2026, 12:0336 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 12 since 4 Oct 2023 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- Pond / lake / reservoir water Planned investigation (local monitoring)
- Where
- National Grid 543640, 281360As published, to the nearest 10 m. Open in a map
- River, by its own name
- Counterdrain
- River, by the map
- Counter DrainPlaced on the river its name gives, 87 m from the line.
- Next gauge downstream
- Welches Dam On the Counter Drain · 5.7 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (12 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
71.1%
Sampled 8 Mar 2024, 2.6 years ago · 6 results banked
Also measured in percentage on another sample material (2GZZ): 6 results, kept apart (see the table).
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Mar 2024, 11:01 | 71.1 | 71.1% |
| 5 Feb 2024, 13:25 | 90 | 90% |
| 4 Jan 2024, 08:56 | 66.8 | 66.8% |
| 6 Dec 2023, 08:51 | 68.8 | 68.8% |
| 6 Nov 2023, 11:18 | 47.8 | 47.8% |
| 4 Oct 2023, 09:16 | 28.3 | 28.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.51 mg/l
Sampled 8 Mar 2024, 2.6 years ago · 6 results banked
Also measured in milligram per litre on another sample material (2GZZ): 6 results, kept apart (see the table).
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Mar 2024, 11:01 | 8.51 | 8.51 mg/l |
| 5 Feb 2024, 13:25 | 10.5 | 10.5 mg/l |
| 4 Jan 2024, 08:56 | 8.02 | 8.02 mg/l |
| 6 Dec 2023, 08:51 | 8.95 | 8.95 mg/l |
| 6 Nov 2023, 11:18 | 5.47 | 5.47 mg/l |
| 4 Oct 2023, 09:16 | 2.86 | 2.86 mg/l |
Water temperature
code 0076 · °C
7.5 °C
Sampled 8 Mar 2024, 2.6 years ago · 6 results banked
Also measured in celsius on another sample material (2GZZ): 6 results, kept apart (see the table).
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Mar 2024, 11:01 | 7.5 | 7.5 °C |
| 5 Feb 2024, 13:25 | 8.7 | 8.7 °C |
| 4 Jan 2024, 08:56 | 7.4 | 7.4 °C |
| 6 Dec 2023, 08:51 | 4.2 | 4.2 °C |
| 6 Nov 2023, 11:18 | 9.3 | 9.3 °C |
| 4 Oct 2023, 09:16 | 14.7 | 14.7 °C |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.22 mg/l
Sampled 8 Mar 2024, 2.6 years ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Mar 2024, 11:01 | 0.22 | 0.22 mg/l |
| 5 Feb 2024, 13:25 | 0.031 | 0.031 mg/l |
| 4 Jan 2024, 08:56 | 0.054 | 0.054 mg/l |
| 6 Dec 2023, 08:51 | 0.18 | 0.18 mg/l |
| 6 Nov 2023, 11:18 | 0.49 | 0.49 mg/l |
| 4 Oct 2023, 09:16 | 0.039 | 0.039 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
6.13 mg/l
Sampled 8 Mar 2024, 2.6 years ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Mar 2024, 11:01 | 6.13 | 6.13 mg/l |
| 5 Feb 2024, 13:25 | 10.9 | 10.9 mg/l |
| 4 Jan 2024, 08:56 | 7.25 | 7.25 mg/l |
| 6 Dec 2023, 08:51 | 13.9 | 13.9 mg/l |
| 6 Nov 2023, 11:18 | 17.7 | 17.7 mg/l |
| 4 Oct 2023, 09:16 | 1.01 | 1.01 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.085 mg/l
Sampled 8 Mar 2024, 2.6 years ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Mar 2024, 11:01 | 0.085 | 0.085 mg/l |
| 5 Feb 2024, 13:25 | 0.074 | 0.074 mg/l |
| 4 Jan 2024, 08:56 | 0.14 | 0.14 mg/l |
| 6 Dec 2023, 08:51 | 0.11 | 0.11 mg/l |
| 6 Nov 2023, 11:18 | <0.01 | below 0.01 mg/l (not detected above this) |
| 4 Oct 2023, 09:16 | <0.01 | below 0.01 mg/l (not detected above this) |
Conductivity
at 25 °C · code 0077 · µS/cm
698 µS/cm
Sampled 8 Mar 2024, 2.6 years ago · 6 results banked
Also measured in microsiemens per centimetre on another sample material (2GZZ): 6 results, kept apart (see the table).
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Mar 2024, 11:01 | 698 | 698 µS/cm |
| 5 Feb 2024, 13:25 | 937 | 937 µS/cm |
| 4 Jan 2024, 08:56 | 512 | 512 µS/cm |
| 6 Dec 2023, 08:51 | 797 | 797 µS/cm |
| 6 Nov 2023, 11:18 | 1972 | 1972 µS/cm |
| 4 Oct 2023, 09:16 | 1668 | 1668 µS/cm |
Everything measured here
25 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 30 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 6 | Oct 2023 – Mar 2024 | 71.1% 8 Mar 2024 |
| Oxygen, Dissolved, % Saturation 9901 | Pond / lake / reservoir water | 6 | Apr 2026 – Sep 2026 | 29.6% 2 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 6 | Oct 2023 – Mar 2024 | 8.51 mg/l 8 Mar 2024 |
| Oxygen, Dissolved as O2 9924 | Pond / lake / reservoir water | 6 | Apr 2026 – Sep 2026 | 2.87 mg/l 2 Sep 2026 |
| Temperature of Water 0076 | River water | 6 | Oct 2023 – Mar 2024 | 7.5 °C 8 Mar 2024 |
| Temperature of Water 0076 | Pond / lake / reservoir water | 6 | Apr 2026 – Sep 2026 | 16.7 °C 2 Sep 2026 |
| pH 0061 | Pond / lake / reservoir water | 6 | Apr 2026 – Sep 2026 | 7.22 2 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 6 | Oct 2023 – Mar 2024 | 0.22 mg/l 8 Mar 2024 |
| Nitrate as N 0117 | River water | 6 | Oct 2023 – Mar 2024 | 6.13 mg/l 8 Mar 2024 |
| Orthophosphate, reactive as P 0180 | River water | 6 | Oct 2023 – Mar 2024 | 0.085 mg/l 8 Mar 2024 |
| Conductivity at 25 C 0077 | River water | 6 | Oct 2023 – Mar 2024 | 698 µS/cm 8 Mar 2024 |
| Conductivity at 25 C 0077 | Pond / lake / reservoir water | 6 | Apr 2026 – Sep 2026 | 1265 µS/cm 2 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 6 | Oct 2023 – Mar 2024 | below 2 mg/l 8 Mar 2024 |
| Chemical Oxygen Demand :- {COD} 0092 | River water | 5 | Oct 2023 – Mar 2024 | 30 mg/l 8 Mar 2024 |
| Chloride 0172 | River water | 6 | Oct 2023 – Mar 2024 | 35 mg/l 8 Mar 2024 |
| Chlorophyll : Acetone Extract 7887 | River water | 6 | Oct 2023 – Mar 2024 | 2.6 µg/l 8 Mar 2024 |
| Nitrite as N 0118 | River water | 6 | Oct 2023 – Mar 2024 | 0.07 mg/l 8 Mar 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 6 | Oct 2023 – Mar 2024 | 6.2 mg/l 8 Mar 2024 |
| Phosphorus, Total as P 0348 | River water | 6 | Oct 2023 – Mar 2024 | 0.16 mg/l 8 Mar 2024 |
| Silica, reactive as SiO2 0182 | River water | 6 | Oct 2023 – Mar 2024 | 7.4 mg/l 8 Mar 2024 |
| Solids, Suspended at 105 C 0135 | River water | 6 | Oct 2023 – Mar 2024 | 35 mg/l 8 Mar 2024 |
| Alkalinity, Dissolved as CaCO3 7867 | Pond / lake / reservoir water | 6 | Apr 2026 – Sep 2026 | 280 mg/l 2 Sep 2026 |
| Ammoniacal Nitrogen, Filtered as N 9993 | Pond / lake / reservoir water | 6 | Apr 2026 – Sep 2026 | below 0.03 mg/l 2 Sep 2026 |
| Chloride, GF/C Filtered 7190 | Pond / lake / reservoir water | 6 | Apr 2026 – Sep 2026 | 180 mg/l 2 Sep 2026 |
| Nitrite, Filtered as N 6485 | Pond / lake / reservoir water | 6 | Apr 2026 – Sep 2026 | below 0.004 mg/l 2 Sep 2026 |
| Nitrogen, Total as N 9686 | Pond / lake / reservoir water | 6 | Apr 2026 – Sep 2026 | 1 mg/l 2 Sep 2026 |
| Nitrogen, Total Oxidised, Filtered as N 9943 | Pond / lake / reservoir water | 6 | Apr 2026 – Sep 2026 | below 0.2 mg/l 2 Sep 2026 |
| Orthophosphate, Filtered as P 9856 | Pond / lake / reservoir water | 6 | Apr 2026 – Sep 2026 | 0.011 mg/l 2 Sep 2026 |
| Phosphorus, Total as P 0348 | Pond / lake / reservoir water | 6 | Apr 2026 – Sep 2026 | 0.031 mg/l 2 Sep 2026 |
| Silicate, Filtered as SiO2 9857 | Pond / lake / reservoir water | 6 | Apr 2026 – Sep 2026 | 3.1 mg/l 2 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.