Overdale Brook at Derwent confluence
EA name: OVERDALE BROOK AT DERWENT CONFLUENCE
Environment Agency sampling point MD-53175681 · 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
- 30 Oct 2024, 10:4023 months 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 30 Sep 2026 and had nothing newer.
- Samples banked
- 1 since 30 Oct 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (local monitoring)
- Where
- National Grid 420384, 382526As published, to the nearest 1 m. Open in a map
- River, by its own name
- Overdale Brook
- River, by the map
- Overdale BrookPlaced on the river its name gives, 7 m from the line.
- Next gauge downstream
- Mytham Bridge On the River Derwent · 0.9 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (1 samples)
Main measurements, river water
pH
code 0061
7.8
Sampled 30 Oct 2024, 23 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Oct 2024, 10:40 | 7.8 | 7.8 |
Everything measured here
26 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 26 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| pH 0061 | River water | 1 | Oct 2024 – Oct 2024 | 7.8 30 Oct 2024 |
| Barium, Dissolved 9446 | River water | 1 | Oct 2024 – Oct 2024 | 13 µg/l 30 Oct 2024 |
| Boron, Dissolved 9447 | River water | 1 | Oct 2024 – Oct 2024 | below 100 µg/l 30 Oct 2024 |
| Cadmium 0108 | River water | 1 | Oct 2024 – Oct 2024 | below 0.1 µg/l 30 Oct 2024 |
| Cadmium, Dissolved 0106 | River water | 1 | Oct 2024 – Oct 2024 | below 0.1 µg/l 30 Oct 2024 |
| Calcium, Dissolved 0239 | River water | 1 | Oct 2024 – Oct 2024 | 14 mg/l 30 Oct 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 1 | Oct 2024 – Oct 2024 | 3.1 mg/l 30 Oct 2024 |
| Copper 6452 | River water | 1 | Oct 2024 – Oct 2024 | 1.1 µg/l 30 Oct 2024 |
| Copper, Dissolved 6450 | River water | 1 | Oct 2024 – Oct 2024 | below 1 µg/l 30 Oct 2024 |
| Hardness, Total as CaCO3 0158 | River water | 1 | Oct 2024 – Oct 2024 | 53.5 mg/l 30 Oct 2024 |
| Iron, Dissolved 6460 | River water | 1 | Oct 2024 – Oct 2024 | 150 µg/l 30 Oct 2024 |
| Lead 0050 | River water | 1 | Oct 2024 – Oct 2024 | below 2 µg/l 30 Oct 2024 |
| Lead, Dissolved 0052 | River water | 1 | Oct 2024 – Oct 2024 | below 2 µg/l 30 Oct 2024 |
| Lithium, Dissolved 4201 | River water | 1 | Oct 2024 – Oct 2024 | below 100 µg/l 30 Oct 2024 |
| Magnesium, Dissolved 0235 | River water | 1 | Oct 2024 – Oct 2024 | 4.5 mg/l 30 Oct 2024 |
| Manganese, Dissolved 6458 | River water | 1 | Oct 2024 – Oct 2024 | below 10 µg/l 30 Oct 2024 |
| National Grid Reference : Whole : Field report 7434 | River water | 1 | Oct 2024 – Oct 2024 | 1 unitless value 30 Oct 2024 |
| Nickel 6462 | River water | 1 | Oct 2024 – Oct 2024 | 1.9 µg/l 30 Oct 2024 |
| Nickel, Dissolved 3410 | River water | 1 | Oct 2024 – Oct 2024 | 1.8 µg/l 30 Oct 2024 |
| Potassium, Dissolved 0209 | River water | 1 | Oct 2024 – Oct 2024 | 1.4 mg/l 30 Oct 2024 |
| Sodium, Dissolved 0205 | River water | 1 | Oct 2024 – Oct 2024 | 7.2 mg/l 30 Oct 2024 |
| Solids, Suspended at 105 C 0135 | River water | 1 | Oct 2024 – Oct 2024 | below 3 mg/l 30 Oct 2024 |
| Strontium, Filtered 6693 | River water | 1 | Oct 2024 – Oct 2024 | 38 µg/l 30 Oct 2024 |
| Sulphate, Dissolved as SO4 7859 | River water | 1 | Oct 2024 – Oct 2024 | 18 mg/l 30 Oct 2024 |
| Zinc 6455 | River water | 1 | Oct 2024 – Oct 2024 | below 5 µg/l 30 Oct 2024 |
| Zinc, Dissolved 3408 | River water | 1 | Oct 2024 – Oct 2024 | below 5 µg/l 30 Oct 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.