Manchester Ship Canal at Irlam Locks
EA name: MANCHESTER SHIP CANAL AT IRLAM LOCKS
Environment Agency sampling point NW-88002440 · 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
- 31 Jul 2026, 10:482 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 34 since 5 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- Canal water Monitoring (national agency policy)
- Where
- National Grid 372840, 394204As published, to the nearest 1 m. Open in a map
- River, by its own name
- Manchester Ship Canal
- River, by the map
- Manchester Ship CanalPlaced on the river its name gives, 25 m from the line. A canal or a line with no direction: not followed.
- Next gauge downstream
- Not known
- Why it was sampled
- Environmental monitoring statutory (EU directives) (28 samples)
Monitoring (national agency policy) (6 samples)
Everything measured here
21 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 21 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | Canal water | 32 | Oct 2023 – Jul 2026 | 87.7% 31 Jul 2026 |
| Oxygen, Dissolved as O2 9924 | Canal water | 32 | Oct 2023 – Jul 2026 | 8 mg/l 31 Jul 2026 |
| Temperature of Water 0076 | Canal water | 32 | Oct 2023 – Jul 2026 | 19.7 °C 31 Jul 2026 |
| pH 0061 | Canal water | 32 | Oct 2023 – Jul 2026 | 7.15 31 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | Canal water | 32 | Oct 2023 – Jul 2026 | 0.33 mg/l 31 Jul 2026 |
| Nitrate as N 0117 | Canal water | 32 | Oct 2023 – Jul 2026 | 9.27 mg/l 31 Jul 2026 |
| Orthophosphate, reactive as P 0180 | Canal water | 32 | Oct 2023 – Jul 2026 | 1.6 mg/l 31 Jul 2026 |
| Conductivity at 25 C 0077 | Canal water | 32 | Oct 2023 – Jul 2026 | 581 µS/cm 31 Jul 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | Canal water | 32 | Oct 2023 – Jul 2026 | 84 mg/l 31 Jul 2026 |
| Ammonia un-ionised as N 0119 | Canal water | 32 | Oct 2023 – Jul 2026 | 0.00178 mg/l 31 Jul 2026 |
| BOD : 5 Day ATU 0085 | Canal water | 28 | Oct 2023 – Jul 2026 | below 5 mg/l 31 Jul 2026 |
| Cadmium, Dissolved 0106 | Canal water | 6 | Oct 2023 – Mar 2024 | 0.015 µg/l 7 Mar 2024 |
| Calcium, Dissolved 0239 | Canal water | 6 | Oct 2023 – Mar 2024 | 42 mg/l 7 Mar 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | Canal water | 6 | Oct 2023 – Mar 2024 | 6.1 mg/l 7 Mar 2024 |
| Chloride 0172 | Canal water | 32 | Oct 2023 – Jul 2026 | 60 mg/l 31 Jul 2026 |
| Chloroform :- {Trichloromethane} 3373 | Canal water | 28 | Nov 2023 – Jul 2026 | 0.52 µg/l 31 Jul 2026 |
| Chlorophyll : Acetone Extract 7887 | Canal water | 31 | Oct 2023 – Jul 2026 | 60 µg/l 31 Jul 2026 |
| Magnesium, Dissolved 0235 | Canal water | 6 | Oct 2023 – Mar 2024 | 6.4 mg/l 7 Mar 2024 |
| Nitrite as N 0118 | Canal water | 32 | Oct 2023 – Jul 2026 | 0.13 mg/l 31 Jul 2026 |
| Nitrogen, Total Oxidised as N 0116 | Canal water | 32 | Oct 2023 – Jul 2026 | 9.4 mg/l 31 Jul 2026 |
| Solids, Suspended at 105 C 0135 | Canal water | 32 | Oct 2023 – Jul 2026 | 8.6 mg/l 31 Jul 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.