Mother Drain at Balby Carr
EA name: MOTHER DRAIN AT BALBY CARR
Environment Agency sampling point MD-37499950 · 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 Jul 2026, 09:353 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 27 since 2 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 458850, 400660As published, to the nearest 10 m. Open in a map
- River, by its own name
- Mother Drain
- River, by the map
- Mother DrainPlaced on the river its name gives, 23 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Why it was sampled
- Environmental monitoring statutory (EU directives) (24 samples)
Monitoring (national agency policy) (3 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
60.2%
Sampled 6 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 07:43 | 60.2 | 60.2% |
| 13 Feb 2026, 13:00 | 65.8 | 65.8% |
| 22 Jan 2026, 08:49 | 71.1 | 71.1% |
| 2 Dec 2025, 08:48 | 78.5 | 78.5% |
| 13 Nov 2025, 07:21 | 72.6 | 72.6% |
| 30 Oct 2025, 13:46 | 80.4 | 80.4% |
| 10 Sep 2025, 17:24 | 76.2 | 76.2% |
| 8 Aug 2025, 12:26 | 75.1 | 75.1% |
| 3 Jul 2025, 11:24 | 71.2 | 71.2% |
| 19 Jun 2025, 08:16 | 65 | 65% |
| 12 May 2025, 08:02 | 68 | 68% |
| 23 Apr 2025, 12:39 | 87.2 | 87.2% |
| 4 Mar 2025, 11:31 | 87.5 | 87.5% |
| 5 Feb 2025, 08:14 | 76.8 | 76.8% |
| 16 Jan 2025, 13:15 | 78.5 | 78.5% |
| 3 Dec 2024, 08:25 | 69.8 | 69.8% |
| 4 Nov 2024, 08:09 | 73.8 | 73.8% |
| 1 Oct 2024, 07:22 | 62.4 | 62.4% |
| 5 Sep 2024, 08:16 | 76.8 | 76.8% |
| 8 Aug 2024, 13:45 | 83.2 | 83.2% |
| 5 Jul 2024, 07:22 | 58.2 | 58.2% |
| 14 Jun 2024, 07:32 | 67.9 | 67.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.77 mg/l
Sampled 6 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 07:43 | 6.77 | 6.77 mg/l |
| 13 Feb 2026, 13:00 | 7.67 | 7.67 mg/l |
| 22 Jan 2026, 08:49 | 8.15 | 8.15 mg/l |
| 2 Dec 2025, 08:48 | 8.78 | 8.78 mg/l |
| 13 Nov 2025, 07:21 | 7.55 | 7.55 mg/l |
| 30 Oct 2025, 13:46 | 8.45 | 8.45 mg/l |
| 10 Sep 2025, 17:24 | 7.31 | 7.31 mg/l |
| 8 Aug 2025, 12:26 | 7.12 | 7.12 mg/l |
| 3 Jul 2025, 11:24 | 6.55 | 6.55 mg/l |
| 19 Jun 2025, 08:16 | 6.04 | 6.04 mg/l |
| 12 May 2025, 08:02 | 6.97 | 6.97 mg/l |
| 23 Apr 2025, 12:39 | 8.73 | 8.73 mg/l |
| 4 Mar 2025, 11:31 | 9.61 | 9.61 mg/l |
| 5 Feb 2025, 08:14 | 8.86 | 8.86 mg/l |
| 16 Jan 2025, 13:15 | 8.89 | 8.89 mg/l |
| 3 Dec 2024, 08:25 | 7.72 | 7.72 mg/l |
| 4 Nov 2024, 08:09 | 7.74 | 7.74 mg/l |
| 1 Oct 2024, 07:22 | 6.5 | 6.5 mg/l |
| 5 Sep 2024, 08:16 | 7.43 | 7.43 mg/l |
| 8 Aug 2024, 13:45 | 7.78 | 7.78 mg/l |
| 5 Jul 2024, 07:22 | 5.78 | 5.78 mg/l |
| 14 Jun 2024, 07:32 | 6.9 | 6.9 mg/l |
Water temperature
code 0076 · °C
10.1 °C
Sampled 6 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 07:43 | 10.1 | 10.1 °C |
| 13 Feb 2026, 13:00 | 8.6 | 8.6 °C |
| 22 Jan 2026, 08:49 | 9.3 | 9.3 °C |
| 2 Dec 2025, 08:48 | 10.3 | 10.3 °C |
| 13 Nov 2025, 07:21 | 13.5 | 13.5 °C |
| 30 Oct 2025, 13:46 | 13 | 13 °C |
| 10 Sep 2025, 17:24 | 17.2 | 17.2 °C |
| 8 Aug 2025, 12:26 | 17.8 | 17.8 °C |
| 3 Jul 2025, 11:24 | 19.3 | 19.3 °C |
| 19 Jun 2025, 08:16 | 18.8 | 18.8 °C |
| 12 May 2025, 08:02 | 14.1 | 14.1 °C |
| 23 Apr 2025, 12:39 | 15.2 | 15.2 °C |
| 4 Mar 2025, 11:31 | 11.1 | 11.1 °C |
| 5 Feb 2025, 08:14 | 9 | 9 °C |
| 16 Jan 2025, 13:15 | 9.8 | 9.8 °C |
| 3 Dec 2024, 08:25 | 10.8 | 10.8 °C |
| 4 Nov 2024, 08:09 | 13.1 | 13.1 °C |
| 1 Oct 2024, 07:22 | 13.4 | 13.4 °C |
| 5 Sep 2024, 08:16 | 16.8 | 16.8 °C |
| 8 Aug 2024, 13:45 | 18.5 | 18.5 °C |
| 5 Jul 2024, 07:22 | 15.6 | 15.6 °C |
| 14 Jun 2024, 07:32 | 14.5 | 14.5 °C |
pH
code 0061
7.39
Sampled 2 Jul 2026, 3 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 09:35 | 7.39 | 7.39 |
| 14 Apr 2026, 14:39 | 7.93 | 7.93 |
| 6 Mar 2026, 07:43 | 7.36 | 7.36 |
| 13 Feb 2026, 13:00 | 7.36 | 7.36 |
| 22 Jan 2026, 08:49 | 7.43 | 7.43 |
| 2 Dec 2025, 08:48 | 7.44 | 7.44 |
| 13 Nov 2025, 07:21 | 7.38 | 7.38 |
| 30 Oct 2025, 13:46 | 7.24 | 7.24 |
| 10 Sep 2025, 17:24 | 7.43 | 7.43 |
| 8 Aug 2025, 12:26 | 7.4 | 7.4 |
| 3 Jul 2025, 11:24 | 7.38 | 7.38 |
| 19 Jun 2025, 08:16 | 7.53 | 7.53 |
| 12 May 2025, 08:02 | 7.67 | 7.67 |
| 23 Apr 2025, 12:39 | 7.58 | 7.58 |
| 4 Mar 2025, 11:31 | 7.6 | 7.6 |
| 5 Feb 2025, 08:14 | 7.63 | 7.63 |
| 16 Jan 2025, 13:15 | 7.7 | 7.7 |
| 3 Dec 2024, 08:25 | 7.56 | 7.56 |
| 4 Nov 2024, 08:09 | 7.67 | 7.67 |
| 1 Oct 2024, 07:22 | 7.58 | 7.58 |
| 5 Sep 2024, 08:16 | 7.6 | 7.6 |
| 8 Aug 2024, 13:45 | 7.76 | 7.76 |
| 5 Jul 2024, 07:22 | 7.6 | 7.6 |
| 14 Jun 2024, 07:32 | 7.66 | 7.66 |
| 2 Apr 2024, 08:00 | 7.52 | 7.52 |
| 12 Jan 2024, 08:28 | 7.61 | 7.61 |
| 2 Oct 2023, 08:42 | 7.51 | 7.51 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.43 mg/l
Sampled 6 Mar 2026, 7 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 07:43 | 0.43 | 0.43 mg/l |
| 13 Feb 2026, 13:00 | 1.5 | 1.5 mg/l |
| 22 Jan 2026, 08:49 | 0.74 | 0.74 mg/l |
| 2 Dec 2025, 08:48 | 0.082 | 0.082 mg/l |
| 13 Nov 2025, 07:21 | 0.53 | 0.53 mg/l |
| 30 Oct 2025, 13:46 | 0.084 | 0.084 mg/l |
| 10 Sep 2025, 17:24 | 0.053 | 0.053 mg/l |
| 8 Aug 2025, 12:26 | 0.056 | 0.056 mg/l |
| 3 Jul 2025, 11:24 | 0.08 | 0.08 mg/l |
| 19 Jun 2025, 08:16 | 0.055 | 0.055 mg/l |
| 12 May 2025, 08:02 | 0.14 | 0.14 mg/l |
| 4 Mar 2025, 11:31 | 0.68 | 0.68 mg/l |
| 5 Feb 2025, 08:14 | 0.28 | 0.28 mg/l |
| 16 Jan 2025, 13:15 | 0.51 | 0.51 mg/l |
| 4 Nov 2024, 08:09 | 0.15 | 0.15 mg/l |
| 1 Oct 2024, 07:22 | 0.74 | 0.74 mg/l |
| 5 Sep 2024, 08:16 | 0.15 | 0.15 mg/l |
| 8 Aug 2024, 13:45 | 0.045 | 0.045 mg/l |
| 5 Jul 2024, 07:22 | 0.078 | 0.078 mg/l |
| 14 Jun 2024, 07:32 | 0.25 | 0.25 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
22.7 mg/l
Sampled 6 Mar 2026, 7 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 07:43 | 22.7 | 22.7 mg/l |
| 13 Feb 2026, 13:00 | 8.1 | 8.1 mg/l |
| 22 Jan 2026, 08:49 | 14.1 | 14.1 mg/l |
| 2 Dec 2025, 08:48 | 9.46 | 9.46 mg/l |
| 13 Nov 2025, 07:21 | 10.7 | 10.7 mg/l |
| 30 Oct 2025, 13:46 | 17.9 | 17.9 mg/l |
| 10 Sep 2025, 17:24 | 15 | 15 mg/l |
| 8 Aug 2025, 12:26 | 13.9 | 13.9 mg/l |
| 3 Jul 2025, 11:24 | 12.8 | 12.8 mg/l |
| 19 Jun 2025, 08:16 | 13.8 | 13.8 mg/l |
| 12 May 2025, 08:02 | 11.8 | 11.8 mg/l |
| 4 Mar 2025, 11:31 | 16.8 | 16.8 mg/l |
| 5 Feb 2025, 08:14 | 13.6 | 13.6 mg/l |
| 16 Jan 2025, 13:15 | 11.4 | 11.4 mg/l |
| 3 Dec 2024, 08:25 | 8.39 | 8.39 mg/l |
| 4 Nov 2024, 08:09 | 13.9 | 13.9 mg/l |
| 1 Oct 2024, 07:22 | 5.37 | 5.37 mg/l |
| 5 Sep 2024, 08:16 | 9.88 | 9.88 mg/l |
| 8 Aug 2024, 13:45 | 9.94 | 9.94 mg/l |
| 5 Jul 2024, 07:22 | 11.8 | 11.8 mg/l |
| 14 Jun 2024, 07:32 | 13.7 | 13.7 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.083 mg/l
Sampled 6 Mar 2026, 7 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 07:43 | 0.083 | 0.083 mg/l |
| 13 Feb 2026, 13:00 | 0.056 | 0.056 mg/l |
| 22 Jan 2026, 08:49 | 0.056 | 0.056 mg/l |
| 2 Dec 2025, 08:48 | 0.058 | 0.058 mg/l |
| 13 Nov 2025, 07:21 | 0.058 | 0.058 mg/l |
| 30 Oct 2025, 13:46 | 0.08 | 0.08 mg/l |
| 10 Sep 2025, 17:24 | 0.12 | 0.12 mg/l |
| 8 Aug 2025, 12:26 | 0.16 | 0.16 mg/l |
| 3 Jul 2025, 11:24 | 0.26 | 0.26 mg/l |
| 19 Jun 2025, 08:16 | 0.39 | 0.39 mg/l |
| 12 May 2025, 08:02 | 0.23 | 0.23 mg/l |
| 4 Mar 2025, 11:31 | 0.13 | 0.13 mg/l |
| 5 Feb 2025, 08:14 | 0.14 | 0.14 mg/l |
| 16 Jan 2025, 13:15 | 0.77 | 0.77 mg/l |
| 4 Nov 2024, 08:09 | 0.3 | 0.3 mg/l |
| 1 Oct 2024, 07:22 | 0.27 | 0.27 mg/l |
| 5 Sep 2024, 08:16 | 1.6 | 1.6 mg/l |
| 8 Aug 2024, 13:45 | 2 | 2 mg/l |
| 5 Jul 2024, 07:22 | 0.95 | 0.95 mg/l |
| 14 Jun 2024, 07:32 | 0.21 | 0.21 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1258 µS/cm
Sampled 6 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 07:43 | 1258 | 1258 µS/cm |
| 13 Feb 2026, 13:00 | 814 | 814 µS/cm |
| 22 Jan 2026, 08:49 | 919 | 919 µS/cm |
| 2 Dec 2025, 08:48 | 1028 | 1028 µS/cm |
| 13 Nov 2025, 07:21 | 890 | 890 µS/cm |
| 30 Oct 2025, 13:46 | 1192 | 1192 µS/cm |
| 10 Sep 2025, 17:24 | 1311 | 1311 µS/cm |
| 8 Aug 2025, 12:26 | 1248 | 1248 µS/cm |
| 3 Jul 2025, 11:24 | 970 | 970 µS/cm |
| 19 Jun 2025, 08:16 | 1360 | 1360 µS/cm |
| 12 May 2025, 08:02 | 1287 | 1287 µS/cm |
| 23 Apr 2025, 12:39 | 1088 | 1088 µS/cm |
| 4 Mar 2025, 11:31 | 1241 | 1241 µS/cm |
| 5 Feb 2025, 08:14 | 1266 | 1266 µS/cm |
| 16 Jan 2025, 13:15 | 1096 | 1096 µS/cm |
| 3 Dec 2024, 08:25 | 1202 | 1202 µS/cm |
| 4 Nov 2024, 08:09 | 1074 | 1074 µS/cm |
| 1 Oct 2024, 07:22 | 504 | 504 µS/cm |
| 5 Sep 2024, 08:16 | 1076 | 1076 µS/cm |
| 8 Aug 2024, 13:45 | 1281 | 1281 µS/cm |
| 5 Jul 2024, 07:22 | 1150 | 1150 µS/cm |
| 14 Jun 2024, 07:32 | 1125 | 1125 µS/cm |
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 | 22 | Jun 2024 – Mar 2026 | 60.2% 6 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Jun 2024 – Mar 2026 | 6.77 mg/l 6 Mar 2026 |
| Temperature of Water 0076 | River water | 22 | Jun 2024 – Mar 2026 | 10.1 °C 6 Mar 2026 |
| pH 0061 | River water | 27 | Oct 2023 – Jul 2026 | 7.39 2 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 20 | Jun 2024 – Mar 2026 | 0.43 mg/l 6 Mar 2026 |
| Nitrate as N 0117 | River water | 21 | Jun 2024 – Mar 2026 | 22.7 mg/l 6 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 20 | Jun 2024 – Mar 2026 | 0.083 mg/l 6 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 22 | Jun 2024 – Mar 2026 | 1258 µS/cm 6 Mar 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 21 | Jun 2024 – Mar 2026 | 150 mg/l 6 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 20 | Jun 2024 – Mar 2026 | 0.00184 mg/l 6 Mar 2026 |
| Cadmium, Dissolved 0106 | River water | 2 | Oct 2023 – Jan 2024 | 0.077 µg/l 12 Jan 2024 |
| Calcium, Dissolved 0239 | River water | 12 | Oct 2023 – Jul 2026 | 160 mg/l 2 Jul 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 10 | Oct 2023 – Jul 2026 | 4.7 mg/l 2 Jul 2026 |
| Lead : BLM Bioavailable 3377 | River water | 10 | Oct 2023 – Jul 2026 | 0.04 µg/l 2 Jul 2026 |
| Lead, Dissolved 0052 | River water | 12 | Oct 2023 – Jul 2026 | 0.21 µg/l 2 Jul 2026 |
| Magnesium, Dissolved 0235 | River water | 2 | Oct 2023 – Jan 2024 | 36 mg/l 12 Jan 2024 |
| Nickel : BLM Bioavailable 3878 | River water | 10 | Oct 2023 – Jul 2026 | 0.68 µg/l 2 Jul 2026 |
| Nickel, Dissolved 3410 | River water | 12 | Oct 2023 – Jul 2026 | 2.8 µg/l 2 Jul 2026 |
| Nitrite as N 0118 | River water | 21 | Jun 2024 – Mar 2026 | 0.29 mg/l 6 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Jun 2024 – Mar 2026 | 23 mg/l 6 Mar 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.