River Deer at Chilsworthy
EA name: RIVER DEER AT CHILSWORTHY
Environment Agency sampling point SW-81201480 · 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
- 15 Aug 2025, 14:2214 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 15 Aug 2025 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 233035, 106860As published, to the nearest 1 m. Open in a map
- River, by its own name
- Deer
- River, by the map
- River DeerPlaced on the river its name gives, 4 m from the line.
- Next gauge downstream
- Polson Bridge On the River Tamar · 32 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (1 samples)
Main measurements, river water
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 15 Aug 2025, 14 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Aug 2025, 14:22 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.326 mg/l
Sampled 15 Aug 2025, 14 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Aug 2025, 14:22 | 0.326 | 0.326 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.034 mg/l
Sampled 15 Aug 2025, 14 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Aug 2025, 14:22 | 0.034 | 0.034 mg/l |
Everything measured here
7 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 7 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Ammoniacal Nitrogen as N 0111 | River water | 1 | Aug 2025 – Aug 2025 | below 0.03 mg/l 15 Aug 2025 |
| Nitrate as N 0117 | River water | 1 | Aug 2025 – Aug 2025 | 0.326 mg/l 15 Aug 2025 |
| Orthophosphate, reactive as P 0180 | River water | 1 | Aug 2025 – Aug 2025 | 0.034 mg/l 15 Aug 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 1 | Aug 2025 – Aug 2025 | 68 mg/l 15 Aug 2025 |
| Nitrite as N 0118 | River water | 1 | Aug 2025 – Aug 2025 | below 0.004 mg/l 15 Aug 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 1 | Aug 2025 – Aug 2025 | 0.33 mg/l 15 Aug 2025 |
| Solids, Suspended at 105 C 0135 | River water | 1 | Aug 2025 – Aug 2025 | 21 mg/l 15 Aug 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.