Layer Brook upstream of Abberton Reservoir

EA name: LAYER BK.U/S ABBERTON RESERVOIR
Environment Agency sampling point AN-RR03 · 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: 9 Sep 2026, 10:3422 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked: 6 since 27 Apr 2026 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
Latest sample: River / running surface water Environmental monitoring statutory (EU directives)
Where: National Grid 594035, 216538As published, to the nearest 1 m. Open in a map
River, by its own name: Layer Brook
River, by the map: Layer BrookPlaced on the river its name gives, 30 m from the line.
Next gauge downstream: None tracedIts water reaches the sea without passing a gauge.
Why it was sampled: Environmental monitoring statutory (EU directives) (6 samples)

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

39%

Sampled 9 Sep 2026, 22 days ago · 6 results banked

Every result (6)

Sampled	Result as published	Reads as
9 Sep 2026, 10:34	39	39%
10 Aug 2026, 13:04	61.6	61.6%
3 Jul 2026, 12:34	45	45%
19 Jun 2026, 15:10	52.7	52.7%
15 May 2026, 14:42	87	87%
27 Apr 2026, 11:59	85.1	85.1%

Dissolved oxygen

as O2 · code 9924 · mg/l

3.95 mg/l

Sampled 9 Sep 2026, 22 days ago · 6 results banked

Every result (6)

Sampled	Result as published	Reads as
9 Sep 2026, 10:34	3.95	3.95 mg/l
10 Aug 2026, 13:04	5.7	5.7 mg/l
3 Jul 2026, 12:34	4.23	4.23 mg/l
19 Jun 2026, 15:10	4.59	4.59 mg/l
15 May 2026, 14:42	9.6	9.6 mg/l
27 Apr 2026, 11:59	9.3	9.3 mg/l

Water temperature

code 0076 · °C

14.7 °C

Sampled 9 Sep 2026, 22 days ago · 6 results banked

Every result (6)

Sampled	Result as published	Reads as
9 Sep 2026, 10:34	14.7	14.7 °C
10 Aug 2026, 13:04	19	19 °C
3 Jul 2026, 12:34	18.2	18.2 °C
19 Jun 2026, 15:10	22.1	22.1 °C
15 May 2026, 14:42	10.9	10.9 °C
27 Apr 2026, 11:59	11.3	11.3 °C

pH

code 0061

6.56

Sampled 9 Sep 2026, 22 days ago · 6 results banked

Every result (6)

Sampled	Result as published	Reads as
9 Sep 2026, 10:34	6.56	6.56
10 Aug 2026, 13:04	8.05	8.05
3 Jul 2026, 12:34	7.37	7.37
19 Jun 2026, 15:10	7.34	7.34
15 May 2026, 14:42	8.07	8.07
27 Apr 2026, 11:59	7.94	7.94

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

0.37 mg/l

Sampled 9 Sep 2026, 22 days ago · 6 results banked

Every result (6)

Sampled	Result as published	Reads as
9 Sep 2026, 10:34	0.37	0.37 mg/l
10 Aug 2026, 13:04	0.045	0.045 mg/l
3 Jul 2026, 12:34	<0.03	below 0.03 mg/l (not detected above this)
19 Jun 2026, 15:10	0.087	0.087 mg/l
15 May 2026, 14:42	<0.03	below 0.03 mg/l (not detected above this)
27 Apr 2026, 11:59	<0.03	below 0.03 mg/l (not detected above this)

Nitrate

as nitrogen (N) · code 0117 · mg/l

7.8 mg/l

Sampled 9 Sep 2026, 22 days ago · 6 results banked

Every result (6)

Sampled	Result as published	Reads as
9 Sep 2026, 10:34	7.8	7.8 mg/l
10 Aug 2026, 13:04	<0.196	below 0.196 mg/l (not detected above this)
3 Jul 2026, 12:34	<0.196	below 0.196 mg/l (not detected above this)
19 Jun 2026, 15:10	0.195	0.195 mg/l
15 May 2026, 14:42	3.27	3.27 mg/l
27 Apr 2026, 11:59	4.28	4.28 mg/l

Phosphate

orthophosphate, reactive, as P · code 0180 · mg/l

0.35 mg/l

Sampled 9 Sep 2026, 22 days ago · 5 results banked

Every result (5)

Sampled	Result as published	Reads as
9 Sep 2026, 10:34	0.35	0.35 mg/l
3 Jul 2026, 12:34	1.7	1.7 mg/l
19 Jun 2026, 15:10	1.2	1.2 mg/l
15 May 2026, 14:42	0.73	0.73 mg/l
27 Apr 2026, 11:59	0.48	0.48 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

1375 µS/cm

Sampled 9 Sep 2026, 22 days ago · 6 results banked

Every result (6)

Sampled	Result as published	Reads as
9 Sep 2026, 10:34	1375	1375 µS/cm
10 Aug 2026, 13:04	826	826 µS/cm
3 Jul 2026, 12:34	695	695 µS/cm
19 Jun 2026, 15:10	627	627 µS/cm
15 May 2026, 14:42	520	520 µS/cm
27 Apr 2026, 11:59	798	798 µS/cm

Everything measured here

12 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 12 rows

Determinand	Material	Results	First – last	Latest result
Oxygen, Dissolved, % Saturation 9901	River water	6	Apr 2026 – Sep 2026	39% 9 Sep 2026
Oxygen, Dissolved as O2 9924	River water	6	Apr 2026 – Sep 2026	3.95 mg/l 9 Sep 2026
Temperature of Water 0076	River water	6	Apr 2026 – Sep 2026	14.7 °C 9 Sep 2026
pH 0061	River water	6	Apr 2026 – Sep 2026	6.56 9 Sep 2026
Ammoniacal Nitrogen as N 0111	River water	6	Apr 2026 – Sep 2026	0.37 mg/l 9 Sep 2026
Nitrate as N 0117	River water	6	Apr 2026 – Sep 2026	7.8 mg/l 9 Sep 2026
Orthophosphate, reactive as P 0180	River water	5	Apr 2026 – Sep 2026	0.35 mg/l 9 Sep 2026
Conductivity at 25 C 0077	River water	6	Apr 2026 – Sep 2026	1375 µS/cm 9 Sep 2026
Alkalinity to pH 4.5 as CaCO3 0162	River water	6	Apr 2026 – Sep 2026	71 mg/l 9 Sep 2026
Ammonia un-ionised as N 0119	River water	6	Apr 2026 – Sep 2026	0.00035 mg/l 9 Sep 2026
Nitrite as N 0118	River water	6	Apr 2026 – Sep 2026	0.2 mg/l 9 Sep 2026
Nitrogen, Total Oxidised as N 0116	River water	6	Apr 2026 – Sep 2026	8 mg/l 9 Sep 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.