Seven Stones Lane
EA name: SEVEN STONES LANE (also listed as “RSN1659 SEVEN STONES LANE”)
Environment Agency sampling point SW-RSN1659 · 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
- 10 Sep 2026, 14:0021 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 20 since 8 Jan 2025 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 310609, 87701As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- 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) (20 samples)
17 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
102.5%
Sampled 4 Feb 2026, 8 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Feb 2026, 11:12 | 102.5 | 102.5% |
| 4 Dec 2025, 12:33 | 79.6 | 79.6% |
| 8 Jan 2025, 13:27 | 87 | 87% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.2 mg/l
Sampled 4 Feb 2026, 8 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Feb 2026, 11:12 | 12.2 | 12.2 mg/l |
| 4 Dec 2025, 12:33 | 9.23 | 9.23 mg/l |
| 8 Jan 2025, 13:27 | 11 | 11 mg/l |
Water temperature
code 0076 · °C
7.6 °C
Sampled 4 Feb 2026, 8 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Feb 2026, 11:12 | 7.6 | 7.6 °C |
| 4 Dec 2025, 12:33 | 8.8 | 8.8 °C |
| 8 Jan 2025, 13:27 | 5.3 | 5.3 °C |
pH
code 0061
4.64
Sampled 4 Feb 2026, 8 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Feb 2026, 11:12 | 4.64 | 4.64 |
| 4 Dec 2025, 12:33 | 5.69 | 5.69 |
| 8 Jan 2025, 13:27 | 4.55 | 4.55 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.0069 mg/l
Sampled 4 Feb 2026, 8 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Feb 2026, 11:12 | 0.0069 | 0.0069 mg/l |
| 4 Dec 2025, 12:33 | <0.002 | below 0.002 mg/l (not detected above this) |
| 8 Jan 2025, 13:27 | 0.024 | 0.024 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.379 mg/l
Sampled 4 Feb 2026, 8 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Feb 2026, 11:12 | 0.379 | 0.379 mg/l |
| 4 Dec 2025, 12:33 | 0.489 | 0.489 mg/l |
| 8 Jan 2025, 13:27 | 0.959 | 0.959 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.0019 mg/l
Sampled 4 Feb 2026, 8 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Feb 2026, 11:12 | 0.0019 | 0.0019 mg/l |
| 4 Dec 2025, 12:33 | 0.0027 | 0.0027 mg/l |
| 8 Jan 2025, 13:27 | 0.0013 | 0.0013 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
115 µS/cm
Sampled 4 Feb 2026, 8 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Feb 2026, 11:12 | 115 | 115 µS/cm |
| 4 Dec 2025, 12:33 | 117 | 117 µS/cm |
| 8 Jan 2025, 13:27 | 127 | 127 µS/cm |
Everything measured here
20 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 20 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 3 | Jan 2025 – Feb 2026 | 102.5% 4 Feb 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 3 | Jan 2025 – Feb 2026 | 12.2 mg/l 4 Feb 2026 |
| Temperature of Water 0076 | River water | 3 | Jan 2025 – Feb 2026 | 7.6 °C 4 Feb 2026 |
| pH 0061 | River water | 3 | Jan 2025 – Feb 2026 | 4.64 4 Feb 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 3 | Jan 2025 – Feb 2026 | 0.0069 mg/l 4 Feb 2026 |
| Nitrate as N 0117 | River water | 3 | Jan 2025 – Feb 2026 | 0.379 mg/l 4 Feb 2026 |
| Orthophosphate, reactive as P 0180 | River water | 3 | Jan 2025 – Feb 2026 | 0.0019 mg/l 4 Feb 2026 |
| Conductivity at 25 C 0077 | River water | 3 | Jan 2025 – Feb 2026 | 115 µS/cm 4 Feb 2026 |
| Alkalinity to pH 4.5 : Grans Plot 7610 | River water | 1 | Jan 2025 – Jan 2025 | -0.55 mg/l 8 Jan 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 2 | Dec 2025 – Feb 2026 | below 8 mg/l 4 Feb 2026 |
| Ammonia un-ionised as N 0119 | River water | 3 | Jan 2025 – Feb 2026 | below 0.00001 mg/l 4 Feb 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 3 | Jan 2025 – Feb 2026 | 9.4 mg/l 4 Feb 2026 |
| Flow Type 2896 | River water | 16 | Jan 2025 – Sep 2026 | Dry 10 Sep 2026 |
| LCMS Screen : Semi Quantitative 7299 | River water | 1 | Feb 2026 – Feb 2026 | 1 text result 4 Feb 2026 |
| Nitrite as N 0118 | River water | 3 | Jan 2025 – Feb 2026 | below 0.001 mg/l 4 Feb 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 3 | Jan 2025 – Feb 2026 | 0.38 mg/l 4 Feb 2026 |
| No flow /No sample 7668 | River water | 17 | Feb 2025 – Sep 2026 | No flow/discharge at sampling point 10 Sep 2026 |
| Phosphorus, Total as P 0348 | River water | 3 | Jan 2025 – Feb 2026 | below 0.01 mg/l 4 Feb 2026 |
| Silica, reactive as SiO2 0182 | River water | 3 | Jan 2025 – Feb 2026 | 2.9 mg/l 4 Feb 2026 |
| Solids, Suspended at 105 C 0135 | River water | 2 | Dec 2025 – Feb 2026 | below 3 mg/l 4 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.