Non-Tidal Trent at Gunthorpe Lock

EA name: NON-TIDAL TRENT AT GUNTHORPE LOCK
Environment Agency sampling point MD-RTN0015 · 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
8 Jul 2024, 13:162.3 years ago · time as the Environment Agency records it (UK clock time; the source gives no time zone). Not sampled since, as far as the archive shows: the Environment Agency was asked up to 27 Oct 2026 and had nothing newer.
Samples banked
4 since 24 Oct 2023 Imported periods: 1 Oct 2023 – 27 Oct 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Monitoring (national agency policy)
Where
National Grid 468860, 343769As published, to the nearest 1 m. Open in a map
River, by its own name
Non Tidal Trent
River, by the map
River TrentPlaced on a river whose name partly matches its own, 30 m from the line.
Next gauge downstream
Farndon On the River Trent · 16 km along the river
Nearest gauge upstream
Lowdham Grange On the Cocker Beck · 6.4 km along the riverColwick On the River Trent · 12 km along the river
Why it was sampled
Monitoring (national agency policy) (4 samples)

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

101.9%

Sampled 8 Jul 2024, 2.3 years ago · 4 results banked

708090100110%202420252026no sample published after Jul 202424 Oct 2023, 11:03: 78.7%4 Jan 2024, 10:36: 82.1%8 Apr 2024, 12:59: 100.9%8 Jul 2024, 13:16: 101.9%
Every result (4)
SampledResult as publishedReads as
8 Jul 2024, 13:16101.9 101.9%
8 Apr 2024, 12:59100.9 100.9%
4 Jan 2024, 10:3682.1 82.1%
24 Oct 2023, 11:0378.7 78.7%

Dissolved oxygen

as O2 · code 9924 · mg/l

9.56 mg/l

Sampled 8 Jul 2024, 2.3 years ago · 4 results banked

891011mg/l202420252026no sample published after Jul 202424 Oct 2023, 11:03: 8.58 mg/l4 Jan 2024, 10:36: 10 mg/l8 Apr 2024, 12:59: 10.7 mg/l8 Jul 2024, 13:16: 9.56 mg/l
Every result (4)
SampledResult as publishedReads as
8 Jul 2024, 13:169.56 9.56 mg/l
8 Apr 2024, 12:5910.7 10.7 mg/l
4 Jan 2024, 10:3610 10 mg/l
24 Oct 2023, 11:038.58 8.58 mg/l

Water temperature

code 0076 · °C

18.3 °C

Sampled 8 Jul 2024, 2.3 years ago · 4 results banked

5101520°C202420252026no sample published after Jul 202424 Oct 2023, 11:03: 11.4 °C4 Jan 2024, 10:36: 6.8 °C8 Apr 2024, 12:59: 12.5 °C8 Jul 2024, 13:16: 18.3 °C
Every result (4)
SampledResult as publishedReads as
8 Jul 2024, 13:1618.3 18.3 °C
8 Apr 2024, 12:5912.5 12.5 °C
4 Jan 2024, 10:366.8 6.8 °C
24 Oct 2023, 11:0311.4 11.4 °C

pH

code 0061

8.17

Sampled 8 Jul 2024, 2.3 years ago · 4 results banked

7.47.67.888.28.4202420252026no sample published after Jul 202424 Oct 2023, 11:03: 7.554 Jan 2024, 10:36: 7.778 Apr 2024, 12:59: 8.238 Jul 2024, 13:16: 8.17
Every result (4)
SampledResult as publishedReads as
8 Jul 2024, 13:168.17 8.17
8 Apr 2024, 12:598.23 8.23
4 Jan 2024, 10:367.77 7.77
24 Oct 2023, 11:037.55 7.55

Conductivity

at 25 °C · code 0077 · µS/cm

927 µS/cm

Sampled 8 Jul 2024, 2.3 years ago · 4 results banked

4006008001000µS/cm202420252026no sample published after Jul 202424 Oct 2023, 11:03: 466 µS/cm4 Jan 2024, 10:36: 503 µS/cm8 Apr 2024, 12:59: 592 µS/cm8 Jul 2024, 13:16: 927 µS/cm
Every result (4)
SampledResult as publishedReads as
8 Jul 2024, 13:16927 927 µS/cm
8 Apr 2024, 12:59592 592 µS/cm
4 Jan 2024, 10:36503 503 µS/cm
24 Oct 2023, 11:03466 466 µS/cm

Everything measured here

5 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 5 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 4 Oct 2023 – Jul 2024 101.9% 8 Jul 2024
Oxygen, Dissolved as O2 9924 River water 4 Oct 2023 – Jul 2024 9.56 mg/l 8 Jul 2024
Temperature of Water 0076 River water 4 Oct 2023 – Jul 2024 18.3 °C 8 Jul 2024
pH 0061 River water 4 Oct 2023 – Jul 2024 8.17 8 Jul 2024
Conductivity at 25 C 0077 River water 4 Oct 2023 – Jul 2024 927 µS/cm 8 Jul 2024

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.