River Lew at Combebow Bridge

EA name: RIVER LEW AT COMBEBOW BRIDGE (also listed as “RIVER LEW (TAMAR) AT COMBEBOW BRIDGE”)
Environment Agency sampling point SW-81261439 · 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
24 Mar 2026, 14:306 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 24 Mar 2026 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 248548, 87942As published, to the nearest 1 m. Open in a map
River, by its own name
Lew
River, by the map
River LewPlaced on the river its name gives, 19 m from the line.
Next gauge downstream
Lifton Park On the River Lyd · 15 km along the river
Why it was sampled
Planned investigation (local monitoring) (1 samples)

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

96.7%

Sampled 24 Mar 2026, 6 months ago · 1 result banked

8090100110%20242025202624 Mar 2026, 14:30: 96.7%
Every result (1)
SampledResult as publishedReads as
24 Mar 2026, 14:3096.7 96.7%

Water temperature

code 0076 · °C

10 °C

Sampled 24 Mar 2026, 6 months ago · 1 result banked

89101112°C20242025202624 Mar 2026, 14:30: 10 °C
Every result (1)
SampledResult as publishedReads as
24 Mar 2026, 14:3010 10 °C

Conductivity

at 25 °C · code 0077 · µS/cm

148 µS/cm

Sampled 24 Mar 2026, 6 months ago · 1 result banked

130140150160170µS/cm20242025202624 Mar 2026, 14:30: 148 µS/cm
Every result (1)
SampledResult as publishedReads as
24 Mar 2026, 14:30148 148 µS/cm

Everything measured here

38 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 38 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 1 Mar 2026 – Mar 2026 96.7% 24 Mar 2026
Temperature of Water 0076 River water 1 Mar 2026 – Mar 2026 10 °C 24 Mar 2026
Conductivity at 25 C 0077 River water 1 Mar 2026 – Mar 2026 148 µS/cm 24 Mar 2026
Barium 6062 River water 1 Mar 2026 – Mar 2026 below 10 µg/l 24 Mar 2026
Barium, Dissolved 9446 River water 1 Mar 2026 – Mar 2026 below 10 µg/l 24 Mar 2026
Boron 6059 River water 1 Mar 2026 – Mar 2026 below 100 µg/l 24 Mar 2026
Boron, Dissolved 9447 River water 1 Mar 2026 – Mar 2026 below 100 µg/l 24 Mar 2026
Cadmium 0108 River water 1 Mar 2026 – Mar 2026 0.021 µg/l 24 Mar 2026
Cadmium, Dissolved 0106 River water 1 Mar 2026 – Mar 2026 0.014 µg/l 24 Mar 2026
Calcium 0241 River water 1 Mar 2026 – Mar 2026 14 mg/l 24 Mar 2026
Calcium, Dissolved 0239 River water 1 Mar 2026 – Mar 2026 14 mg/l 24 Mar 2026
Chromium 3164 River water 1 Mar 2026 – Mar 2026 below 0.5 µg/l 24 Mar 2026
Chromium, Dissolved 3409 River water 1 Mar 2026 – Mar 2026 below 0.5 µg/l 24 Mar 2026
Copper 6452 River water 1 Mar 2026 – Mar 2026 1.1 µg/l 24 Mar 2026
Copper, Dissolved 6450 River water 1 Mar 2026 – Mar 2026 0.74 µg/l 24 Mar 2026
Hardness, Total as CaCO3 0158 River water 1 Mar 2026 – Mar 2026 47.3 mg/l 24 Mar 2026
Iron 6051 River water 1 Mar 2026 – Mar 2026 180 µg/l 24 Mar 2026
Iron, Dissolved 6460 River water 1 Mar 2026 – Mar 2026 100 µg/l 24 Mar 2026
Lead 0050 River water 1 Mar 2026 – Mar 2026 0.15 µg/l 24 Mar 2026
Lead, Dissolved 0052 River water 1 Mar 2026 – Mar 2026 below 0.1 µg/l 24 Mar 2026
Lithium 6064 River water 1 Mar 2026 – Mar 2026 below 100 µg/l 24 Mar 2026
Lithium, Dissolved 4201 River water 1 Mar 2026 – Mar 2026 below 100 µg/l 24 Mar 2026
Magnesium 0237 River water 1 Mar 2026 – Mar 2026 3 mg/l 24 Mar 2026
Magnesium, Dissolved 0235 River water 1 Mar 2026 – Mar 2026 3 mg/l 24 Mar 2026
Manganese 6050 River water 1 Mar 2026 – Mar 2026 19 µg/l 24 Mar 2026
Manganese, Dissolved 6458 River water 1 Mar 2026 – Mar 2026 17 µg/l 24 Mar 2026
Nickel 6462 River water 1 Mar 2026 – Mar 2026 1.6 µg/l 24 Mar 2026
Nickel, Dissolved 3410 River water 1 Mar 2026 – Mar 2026 1.5 µg/l 24 Mar 2026
Potassium 0211 River water 1 Mar 2026 – Mar 2026 1.3 mg/l 24 Mar 2026
Potassium, Dissolved 0209 River water 1 Mar 2026 – Mar 2026 1.3 mg/l 24 Mar 2026
Sodium 0207 River water 1 Mar 2026 – Mar 2026 8.7 mg/l 24 Mar 2026
Sodium, Dissolved 0205 River water 1 Mar 2026 – Mar 2026 8.7 mg/l 24 Mar 2026
Strontium 6063 River water 1 Mar 2026 – Mar 2026 63 µg/l 24 Mar 2026
Strontium, Filtered 6693 River water 1 Mar 2026 – Mar 2026 63 µg/l 24 Mar 2026
Sulphate as SO4 0183 River water 1 Mar 2026 – Mar 2026 14 mg/l 24 Mar 2026
Sulphate, Dissolved as SO4 7859 River water 1 Mar 2026 – Mar 2026 15 mg/l 24 Mar 2026
Zinc 6455 River water 1 Mar 2026 – Mar 2026 2.9 µg/l 24 Mar 2026
Zinc, Dissolved 3408 River water 1 Mar 2026 – Mar 2026 2.2 µg/l 24 Mar 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.