River Cober at Trenear Bridge

EA name: RIVER COBER AT TRENEAR BRIDGE
Environment Agency sampling point SW-82010187 · 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
22 Sep 2026, 09:1516 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
10 since 14 Jun 2024 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) · results completed 1 Oct 2026
Where
National Grid 168100, 31380As published, to the nearest 10 m. Open in a map
River, by its own name
Cober
River, by the map
River CoberPlaced on the river its name gives, 9 m from the line.
Next gauge downstream
Trenear On the River Cober · 0.7 km along the river
Why it was sampled
Monitoring (national agency policy) (6 samples)
Planned investigation (local monitoring) (4 samples)

Results here were completed a median of 14 days after the sample was taken (9 to 35 days, 4 samples).

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

94.4%

Sampled 22 Sep 2026, 16 days ago · 10 results banked

92949698100%20242025202614 Jun 2024, 10:00: 93%27 Jun 2024, 12:25: 94.5%12 Jul 2024, 10:50: 98.5%24 Jul 2024, 12:44: 94%16 Apr 2026, 10:15: 97.5%12 May 2026, 10:08: 97.8%16 Jun 2026, 10:16: 96.2%9 Jul 2026, 10:27: 96%21 Aug 2026, 09:37: 95.6%22 Sep 2026, 09:15: 94.4%
Every result (10)
SampledResult as publishedReads as
22 Sep 2026, 09:1594.4 94.4%
21 Aug 2026, 09:3795.6 95.6%
9 Jul 2026, 10:2796 96%
16 Jun 2026, 10:1696.2 96.2%
12 May 2026, 10:0897.8 97.8%
16 Apr 2026, 10:1597.5 97.5%
24 Jul 2024, 12:4494 94%
12 Jul 2024, 10:5098.5 98.5%
27 Jun 2024, 12:2594.5 94.5%
14 Jun 2024, 10:0093 93%

Water temperature

code 0076 · °C

15.6 °C

Sampled 22 Sep 2026, 16 days ago · 10 results banked

1012141618°C20242025202614 Jun 2024, 10:00: 12.1 °C27 Jun 2024, 12:25: 14.3 °C12 Jul 2024, 10:50: 12.8 °C24 Jul 2024, 12:44: 14.6 °C16 Apr 2026, 10:15: 11.1 °C12 May 2026, 10:08: 11.4 °C16 Jun 2026, 10:16: 14.1 °C9 Jul 2026, 10:27: 16.6 °C21 Aug 2026, 09:37: 16 °C22 Sep 2026, 09:15: 15.6 °C
Every result (10)
SampledResult as publishedReads as
22 Sep 2026, 09:1515.6 15.6 °C
21 Aug 2026, 09:3716 16 °C
9 Jul 2026, 10:2716.6 16.6 °C
16 Jun 2026, 10:1614.1 14.1 °C
12 May 2026, 10:0811.4 11.4 °C
16 Apr 2026, 10:1511.1 11.1 °C
24 Jul 2024, 12:4414.6 14.6 °C
12 Jul 2024, 10:5012.8 12.8 °C
27 Jun 2024, 12:2514.3 14.3 °C
14 Jun 2024, 10:0012.1 12.1 °C

pH

code 0061

7

Sampled 22 Sep 2026, 16 days ago · 10 results banked

6.46.66.8720242025202614 Jun 2024, 10:00: 6.6627 Jun 2024, 12:25: 6.6212 Jul 2024, 10:50: 6.724 Jul 2024, 12:44: 6.5516 Apr 2026, 10:15: 6.612 May 2026, 10:08: 6.616 Jun 2026, 10:16: 6.79 Jul 2026, 10:27: 6.821 Aug 2026, 09:37: 6.822 Sep 2026, 09:15: 7
Every result (10)
SampledResult as publishedReads as
22 Sep 2026, 09:157 7
21 Aug 2026, 09:376.8 6.8
9 Jul 2026, 10:276.8 6.8
16 Jun 2026, 10:166.7 6.7
12 May 2026, 10:086.6 6.6
16 Apr 2026, 10:156.6 6.6
24 Jul 2024, 12:446.55 6.55
12 Jul 2024, 10:506.7 6.7
27 Jun 2024, 12:256.62 6.62
14 Jun 2024, 10:006.66 6.66

Conductivity

at 25 °C · code 0077 · µS/cm

140 µS/cm

Sampled 22 Sep 2026, 16 days ago · 10 results banked

132.5135137.5140142.5145µS/cm20242025202614 Jun 2024, 10:00: 144 µS/cm27 Jun 2024, 12:25: 141 µS/cm12 Jul 2024, 10:50: 142 µS/cm24 Jul 2024, 12:44: 140 µS/cm16 Apr 2026, 10:15: 137 µS/cm12 May 2026, 10:08: 137 µS/cm16 Jun 2026, 10:16: 135 µS/cm9 Jul 2026, 10:27: 134 µS/cm21 Aug 2026, 09:37: 136 µS/cm22 Sep 2026, 09:15: 140 µS/cm
Every result (10)
SampledResult as publishedReads as
22 Sep 2026, 09:15140 140 µS/cm
21 Aug 2026, 09:37136 136 µS/cm
9 Jul 2026, 10:27134 134 µS/cm
16 Jun 2026, 10:16135 135 µS/cm
12 May 2026, 10:08137 137 µS/cm
16 Apr 2026, 10:15137 137 µS/cm
24 Jul 2024, 12:44140 140 µS/cm
12 Jul 2024, 10:50142 142 µS/cm
27 Jun 2024, 12:25141 141 µS/cm
14 Jun 2024, 10:00144 144 µS/cm

Everything measured here

31 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 31 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 10 Jun 2024 – Sep 2026 94.4% 22 Sep 2026
Temperature of Water 0076 River water 10 Jun 2024 – Sep 2026 15.6 °C 22 Sep 2026
pH 0061 River water 10 Jun 2024 – Sep 2026 7 22 Sep 2026
Conductivity at 25 C 0077 River water 10 Jun 2024 – Sep 2026 140 µS/cm 22 Sep 2026
Aluminium, Dissolved 6037 River water 4 Jun 2024 – Jul 2024 62 µg/l 24 Jul 2024
Barium, Dissolved 9446 River water 6 Apr 2026 – Sep 2026 below 10 µg/l 22 Sep 2026
Boron, Dissolved 9447 River water 6 Apr 2026 – Sep 2026 below 100 µg/l 22 Sep 2026
Cadmium 0108 River water 6 Apr 2026 – Sep 2026 below 0.1 µg/l 22 Sep 2026
Cadmium, Dissolved 0106 River water 10 Jun 2024 – Sep 2026 below 0.1 µg/l 22 Sep 2026
Calcium, Dissolved 0239 River water 10 Jun 2024 – Sep 2026 6.8 mg/l 22 Sep 2026
Carbon, Organic, Dissolved as C :- {DOC} 0301 River water 10 Jun 2024 – Sep 2026 2.9 mg/l 22 Sep 2026
Chromium, Dissolved 3409 River water 4 Jun 2024 – Jul 2024 below 0.5 µg/l 24 Jul 2024
Copper 6452 River water 6 Apr 2026 – Sep 2026 10 µg/l 22 Sep 2026
Copper, Dissolved 6450 River water 10 Jun 2024 – Sep 2026 8.2 µg/l 22 Sep 2026
Hardness, Total as CaCO3 0158 River water 10 Jun 2024 – Sep 2026 27.7 mg/l 22 Sep 2026
Iron, Dissolved 6460 River water 6 Apr 2026 – Sep 2026 300 µg/l 22 Sep 2026
Lead 0050 River water 6 Apr 2026 – Sep 2026 below 2 µg/l 22 Sep 2026
Lead, Dissolved 0052 River water 10 Jun 2024 – Sep 2026 below 2 µg/l 22 Sep 2026
Lithium, Dissolved 4201 River water 6 Apr 2026 – Sep 2026 below 100 µg/l 22 Sep 2026
Magnesium, Dissolved 0235 River water 10 Jun 2024 – Sep 2026 2.6 mg/l 22 Sep 2026
Manganese, Dissolved 6458 River water 6 Apr 2026 – Sep 2026 14 µg/l 22 Sep 2026
Nickel 6462 River water 6 Apr 2026 – Sep 2026 below 1 µg/l 22 Sep 2026
Nickel, Dissolved 3410 River water 10 Jun 2024 – Sep 2026 below 1 µg/l 22 Sep 2026
pH : In Situ 3169 River water 6 Apr 2026 – Sep 2026 6.72 22 Sep 2026
Potassium, Dissolved 0209 River water 6 Apr 2026 – Sep 2026 2.6 mg/l 22 Sep 2026
Sodium, Dissolved 0205 River water 6 Apr 2026 – Sep 2026 13 mg/l 22 Sep 2026
Solids, Suspended at 105 C 0135 River water 6 Apr 2026 – Sep 2026 4.7 mg/l 22 Sep 2026
Strontium, Filtered 6693 River water 6 Apr 2026 – Sep 2026 39 µg/l 22 Sep 2026
Sulphate, Dissolved as SO4 7859 River water 6 Apr 2026 – Sep 2026 10 mg/l 22 Sep 2026
Zinc 6455 River water 6 Apr 2026 – Sep 2026 11 µg/l 22 Sep 2026
Zinc, Dissolved 3408 River water 10 Jun 2024 – Sep 2026 8.7 µg/l 22 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.

Contains OS data © Crown copyright and database rights 2026.