Allerthorpe Drain near Barmby Moor
EA name: ALLERTHORPE DRAIN NEAR BARMBY MOOR
Environment Agency sampling point NE-SSN1345 · 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
- 11 Sep 2026, 13:2620 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 37 since 12 Jan 2024 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 478052, 448407As published, to the nearest 1 m. Open in a map
- River, by its own name
- Allerthorpe Drain
- River, by the map
- Not placedNo mapped watercourse within 500 m. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (37 samples)
34 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
62.6%
Sampled 25 Feb 2026, 7 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Feb 2026, 13:42 | 62.6 | 62.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.73 mg/l
Sampled 25 Feb 2026, 7 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Feb 2026, 13:42 | 6.73 | 6.73 mg/l |
Water temperature
code 0076 · °C
11.9 °C
Sampled 25 Feb 2026, 7 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Feb 2026, 13:42 | 11.9 | 11.9 °C |
pH
code 0061
7.63
Sampled 25 Feb 2026, 7 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Feb 2026, 13:42 | 7.63 | 7.63 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 25 Feb 2026, 7 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Feb 2026, 13:42 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
7.58 mg/l
Sampled 25 Feb 2026, 7 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Feb 2026, 13:42 | 7.58 | 7.58 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.085 mg/l
Sampled 25 Feb 2026, 7 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Feb 2026, 13:42 | 0.085 | 0.085 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1733 µS/cm
Sampled 25 Feb 2026, 7 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Feb 2026, 13:42 | 1733 | 1733 µS/cm |
Everything measured here
24 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 24 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 1 | Feb 2026 – Feb 2026 | 62.6% 25 Feb 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 1 | Feb 2026 – Feb 2026 | 6.73 mg/l 25 Feb 2026 |
| Temperature of Water 0076 | River water | 1 | Feb 2026 – Feb 2026 | 11.9 °C 25 Feb 2026 |
| pH 0061 | River water | 1 | Feb 2026 – Feb 2026 | 7.63 25 Feb 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 1 | Feb 2026 – Feb 2026 | below 0.03 mg/l 25 Feb 2026 |
| Nitrate as N 0117 | River water | 1 | Feb 2026 – Feb 2026 | 7.58 mg/l 25 Feb 2026 |
| Orthophosphate, reactive as P 0180 | River water | 1 | Feb 2026 – Feb 2026 | 0.085 mg/l 25 Feb 2026 |
| Conductivity at 25 C 0077 | River water | 1 | Feb 2026 – Feb 2026 | 1733 µS/cm 25 Feb 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 1 | Feb 2026 – Feb 2026 | 360 mg/l 25 Feb 2026 |
| Aminomethylphosphonic acid 7125 | River water | 1 | Feb 2026 – Feb 2026 | below 0.1 µg/l 25 Feb 2026 |
| Ammonia un-ionised as N 0119 | River water | 1 | Feb 2026 – Feb 2026 | below 0.00027 mg/l 25 Feb 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 1 | Feb 2026 – Feb 2026 | 7.6 mg/l 25 Feb 2026 |
| Chloride 0172 | River water | 1 | Feb 2026 – Feb 2026 | 290 mg/l 25 Feb 2026 |
| eDNA Report 3047 | River water | 1 | Jan 2025 – Jan 2025 | 1 text result 6 Jan 2025 |
| Flow Type 2896 | River water | 21 | Jul 2024 – Sep 2026 | Dry 11 Sep 2026 |
| Glyphosate 3007 | River water | 1 | Feb 2026 – Feb 2026 | below 0.1 µg/l 25 Feb 2026 |
| Mitochondrial marker : Fish 12S 2857 | River water | 1 | Jan 2025 – Jan 2025 | Present 6 Jan 2025 |
| Nitrite as N 0118 | River water | 1 | Feb 2026 – Feb 2026 | 0.022 mg/l 25 Feb 2026 |
| Nitrogen, Total as N 9686 | River water | 1 | Feb 2026 – Feb 2026 | 8.8 mg/l 25 Feb 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 1 | Feb 2026 – Feb 2026 | 7.6 mg/l 25 Feb 2026 |
| No flow /No sample 7668 | River water | 34 | Jan 2024 – Sep 2026 | No flow/discharge at sampling point 11 Sep 2026 |
| Phosphorus, Total as P 0348 | River water | 1 | Feb 2026 – Feb 2026 | 0.19 mg/l 25 Feb 2026 |
| Silica, reactive as SiO2 0182 | River water | 1 | Feb 2026 – Feb 2026 | 10 mg/l 25 Feb 2026 |
| Solids, Suspended at 105 C 0135 | River water | 1 | Feb 2026 – Feb 2026 | 45 mg/l 25 Feb 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.