Darleyford Stream upstream of Phoenix Mine Adit
EA name: DARLEYFORD STREAM U/S PHOENIX MINE ADIT (also listed as “DARLEYFORD STREAM ABOVE PHOENIX MINE ADIT”)
Environment Agency sampling point SW-91253464 · 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
- 24 Aug 2026, 12:3645 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 3 since 23 Dec 2025 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 226437, 72396As published, to the nearest 1 m. Open in a map
- River, by its own name
- Darleyford Stream
- River, by the map
- An unnamed streamPlaced by position alone (the only river line close by), 29 m from the line.
- Next gauge downstream
- Pillaton On the River Lynher · 20 km along the river
- Why it was sampled
- Monitoring (national agency policy) (2 samples)
Planned investigation (local monitoring) (1 samples)
2 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
96.4%
Sampled 23 Dec 2025, 9 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 23 Dec 2025, 11:55 | 96.4 | 96.4% |
Water temperature
code 0076 · °C
11.1 °C
Sampled 23 Dec 2025, 9 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 23 Dec 2025, 11:55 | 11.1 | 11.1 °C |
pH
code 0061
5.43
Sampled 23 Dec 2025, 9 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 23 Dec 2025, 11:55 | 5.43 | 5.43 |
Conductivity
at 25 °C · code 0077 · µS/cm
72 µS/cm
Sampled 23 Dec 2025, 9 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 23 Dec 2025, 11:55 | 72 | 72 µS/cm |
Everything measured here
15 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 15 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 1 | Dec 2025 – Dec 2025 | 96.4% 23 Dec 2025 |
| Temperature of Water 0076 | River water | 1 | Dec 2025 – Dec 2025 | 11.1 °C 23 Dec 2025 |
| pH 0061 | River water | 1 | Dec 2025 – Dec 2025 | 5.43 23 Dec 2025 |
| Conductivity at 25 C 0077 | River water | 1 | Dec 2025 – Dec 2025 | 72 µS/cm 23 Dec 2025 |
| Aluminium, Dissolved 6037 | River water | 1 | Dec 2025 – Dec 2025 | 170 µg/l 23 Dec 2025 |
| Cadmium, Dissolved 0106 | River water | 1 | Dec 2025 – Dec 2025 | 0.26 µg/l 23 Dec 2025 |
| Calcium, Dissolved 0239 | River water | 1 | Dec 2025 – Dec 2025 | 3.1 mg/l 23 Dec 2025 |
| Chromium, Dissolved 3409 | River water | 1 | Dec 2025 – Dec 2025 | below 0.5 µg/l 23 Dec 2025 |
| Copper, Dissolved 6450 | River water | 1 | Dec 2025 – Dec 2025 | 660 µg/l 23 Dec 2025 |
| Hardness, Total as CaCO3 0158 | River water | 1 | Dec 2025 – Dec 2025 | 12.3 mg/l 23 Dec 2025 |
| Lead, Dissolved 0052 | River water | 1 | Dec 2025 – Dec 2025 | below 2 µg/l 23 Dec 2025 |
| Magnesium, Dissolved 0235 | River water | 1 | Dec 2025 – Dec 2025 | 1.1 mg/l 23 Dec 2025 |
| Nickel, Dissolved 3410 | River water | 1 | Dec 2025 – Dec 2025 | 1.6 µg/l 23 Dec 2025 |
| No flow /No sample 7668 | River water | 2 | Jul 2026 – Aug 2026 | No flow/discharge at sampling point 24 Aug 2026 |
| Zinc, Dissolved 3408 | River water | 1 | Dec 2025 – Dec 2025 | 130 µg/l 23 Dec 2025 |
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.