Mellangoose Stream Prior to Cober

EA name: MELLANGOOSE STREAM PRIOR TO COBER
Environment Agency sampling point SW-82010189 · 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
7 Jul 2026, 11:143 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
8 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)
Where
National Grid 165096, 28613As 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
An unnamed streamPlaced by position alone (the only river line close by), 19 m from the line.
Next gauge downstream
Helston County Bridge On the River Cober · 1.9 km along the riverHELSTON COUNTY BRIDGE 1.9 km along the river
Why it was sampled
Planned investigation (local monitoring) (4 samples)
Monitoring (national agency policy) (4 samples)

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

98.8%

Sampled 7 Jul 2026, 3 months ago · 8 results banked

9698100102%20242025202614 Jun 2024, 10:40: 96.9%27 Jun 2024, 11:50: 97.1%12 Jul 2024, 10:21: 101.1%24 Jul 2024, 12:19: 97.2%14 Apr 2026, 11:06: 101%14 May 2026, 10:52: 99.1%8 Jun 2026, 11:25: 98.5%7 Jul 2026, 11:14: 98.8%
Every result (8)
SampledResult as publishedReads as
7 Jul 2026, 11:1498.8 98.8%
8 Jun 2026, 11:2598.5 98.5%
14 May 2026, 10:5299.1 99.1%
14 Apr 2026, 11:06101 101%
24 Jul 2024, 12:1997.2 97.2%
12 Jul 2024, 10:21101.1 101.1%
27 Jun 2024, 11:5097.1 97.1%
14 Jun 2024, 10:4096.9 96.9%

Water temperature

code 0076 · °C

16.1 °C

Sampled 7 Jul 2026, 3 months ago · 8 results banked

1012141618°C20242025202614 Jun 2024, 10:40: 12.6 °C27 Jun 2024, 11:50: 14.6 °C12 Jul 2024, 10:21: 12.9 °C24 Jul 2024, 12:19: 14.6 °C14 Apr 2026, 11:06: 11.9 °C14 May 2026, 10:52: 11.6 °C8 Jun 2026, 11:25: 13.3 °C7 Jul 2026, 11:14: 16.1 °C
Every result (8)
SampledResult as publishedReads as
7 Jul 2026, 11:1416.1 16.1 °C
8 Jun 2026, 11:2513.3 13.3 °C
14 May 2026, 10:5211.6 11.6 °C
14 Apr 2026, 11:0611.9 11.9 °C
24 Jul 2024, 12:1914.6 14.6 °C
12 Jul 2024, 10:2112.9 12.9 °C
27 Jun 2024, 11:5014.6 14.6 °C
14 Jun 2024, 10:4012.6 12.6 °C

pH

code 0061

7.1

Sampled 7 Jul 2026, 3 months ago · 8 results banked

6.977.17.220242025202614 Jun 2024, 10:40: 7.0727 Jun 2024, 11:50: 7.1112 Jul 2024, 10:21: 7.1124 Jul 2024, 12:19: 6.9614 Apr 2026, 11:06: 6.914 May 2026, 10:52: 6.98 Jun 2026, 11:25: 7.17 Jul 2026, 11:14: 7.1
Every result (8)
SampledResult as publishedReads as
7 Jul 2026, 11:147.1 7.1
8 Jun 2026, 11:257.1 7.1
14 May 2026, 10:526.9 6.9
14 Apr 2026, 11:066.9 6.9
24 Jul 2024, 12:196.96 6.96
12 Jul 2024, 10:217.11 7.11
27 Jun 2024, 11:507.11 7.11
14 Jun 2024, 10:407.07 7.07

Conductivity

at 25 °C · code 0077 · µS/cm

236 µS/cm

Sampled 7 Jul 2026, 3 months ago · 8 results banked

220230240250µS/cm20242025202614 Jun 2024, 10:40: 243 µS/cm27 Jun 2024, 11:50: 244 µS/cm12 Jul 2024, 10:21: 240 µS/cm24 Jul 2024, 12:19: 242 µS/cm14 Apr 2026, 11:06: 230 µS/cm14 May 2026, 10:52: 234 µS/cm8 Jun 2026, 11:25: 220 µS/cm7 Jul 2026, 11:14: 236 µS/cm
Every result (8)
SampledResult as publishedReads as
7 Jul 2026, 11:14236 236 µS/cm
8 Jun 2026, 11:25220 220 µS/cm
14 May 2026, 10:52234 234 µS/cm
14 Apr 2026, 11:06230 230 µS/cm
24 Jul 2024, 12:19242 242 µS/cm
12 Jul 2024, 10:21240 240 µS/cm
27 Jun 2024, 11:50244 244 µS/cm
14 Jun 2024, 10:40243 243 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 8 Jun 2024 – Jul 2026 98.8% 7 Jul 2026
Temperature of Water 0076 River water 8 Jun 2024 – Jul 2026 16.1 °C 7 Jul 2026
pH 0061 River water 8 Jun 2024 – Jul 2026 7.1 7 Jul 2026
Conductivity at 25 C 0077 River water 8 Jun 2024 – Jul 2026 236 µS/cm 7 Jul 2026
Aluminium, Dissolved 6037 River water 4 Jun 2024 – Jul 2024 below 20 µg/l 24 Jul 2024
Barium, Dissolved 9446 River water 4 Apr 2026 – Jul 2026 10 µg/l 7 Jul 2026
Boron, Dissolved 9447 River water 4 Apr 2026 – Jul 2026 below 100 µg/l 7 Jul 2026
Cadmium 0108 River water 4 Apr 2026 – Jul 2026 0.38 µg/l 7 Jul 2026
Cadmium, Dissolved 0106 River water 8 Jun 2024 – Jul 2026 0.38 µg/l 7 Jul 2026
Calcium, Dissolved 0239 River water 8 Jun 2024 – Jul 2026 11 mg/l 7 Jul 2026
Carbon, Organic, Dissolved as C :- {DOC} 0301 River water 8 Jun 2024 – Jul 2026 0.95 mg/l 7 Jul 2026
Chromium, Dissolved 3409 River water 4 Jun 2024 – Jul 2024 below 0.5 µg/l 24 Jul 2024
Copper 6452 River water 4 Apr 2026 – Jul 2026 5.6 µg/l 7 Jul 2026
Copper, Dissolved 6450 River water 8 Jun 2024 – Jul 2026 5.1 µg/l 7 Jul 2026
Hardness, Total as CaCO3 0158 River water 8 Jun 2024 – Jul 2026 55 mg/l 7 Jul 2026
Iron, Dissolved 6460 River water 4 Apr 2026 – Jul 2026 below 30 µg/l 7 Jul 2026
Lead 0050 River water 4 Apr 2026 – Jul 2026 below 2 µg/l 7 Jul 2026
Lead, Dissolved 0052 River water 8 Jun 2024 – Jul 2026 below 2 µg/l 7 Jul 2026
Lithium, Dissolved 4201 River water 4 Apr 2026 – Jul 2026 below 100 µg/l 7 Jul 2026
Magnesium, Dissolved 0235 River water 8 Jun 2024 – Jul 2026 6.7 mg/l 7 Jul 2026
Manganese, Dissolved 6458 River water 4 Apr 2026 – Jul 2026 below 10 µg/l 7 Jul 2026
Nickel 6462 River water 4 Apr 2026 – Jul 2026 2.1 µg/l 7 Jul 2026
Nickel, Dissolved 3410 River water 8 Jun 2024 – Jul 2026 2.2 µg/l 7 Jul 2026
pH : In Situ 3169 River water 4 Apr 2026 – Jul 2026 6.84 7 Jul 2026
Potassium, Dissolved 0209 River water 4 Apr 2026 – Jul 2026 3 mg/l 7 Jul 2026
Sodium, Dissolved 0205 River water 4 Apr 2026 – Jul 2026 20 mg/l 7 Jul 2026
Solids, Suspended at 105 C 0135 River water 4 Apr 2026 – Jul 2026 below 3 mg/l 7 Jul 2026
Strontium, Filtered 6693 River water 4 Apr 2026 – Jul 2026 67 µg/l 7 Jul 2026
Sulphate, Dissolved as SO4 7859 River water 4 Apr 2026 – Jul 2026 16 mg/l 7 Jul 2026
Zinc 6455 River water 4 Apr 2026 – Jul 2026 78 µg/l 7 Jul 2026
Zinc, Dissolved 3408 River water 8 Jun 2024 – Jul 2026 81 µg/l 7 Jul 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.