Swale downstream of Grinton Gill

EA name: SWALE D/S GRINTON GILL
Environment Agency sampling point NE-49905262 · 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
17 Aug 2026, 10:142 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
2 since 7 Jul 2026 Imported periods: 1 Oct 2023 – 26 Oct 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Monitoring (national agency policy) · results completed 28 Aug 2026
Where
National Grid 404791, 498581As published, to the nearest 1 m. Open in a map
River, by its own name
Swale
River, by the map
River SwalePlaced on the river its name gives, 6 m from the line.
Next gauge downstream
Richmond Lownthwaite Bridge On the River Swale · 14 km along the river
Nearest gauge upstream
Grinton Bridge On the River Swale · 0.1 km along the river
Why it was sampled
Monitoring (national agency policy) (2 samples)

Results here were completed a median of 18 days after the sample was taken (11 to 18 days, 2 samples).

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

110%

Sampled 17 Aug 2026, 2 months ago · 2 results banked

95100105110%2024202520267 Jul 2026, 09:15: 99.3%17 Aug 2026, 10:14: 110%
Every result (2)
SampledResult as publishedReads as
17 Aug 2026, 10:14110 110%
7 Jul 2026, 09:1599.3 99.3%

Water temperature

code 0076 · °C

15 °C

Sampled 17 Aug 2026, 2 months ago · 2 results banked

1515.0515.115.1515.2°C2024202520267 Jul 2026, 09:15: 15.2 °C17 Aug 2026, 10:14: 15 °C
Every result (2)
SampledResult as publishedReads as
17 Aug 2026, 10:1415 15 °C
7 Jul 2026, 09:1515.2 15.2 °C

pH

code 0061

8.4

Sampled 17 Aug 2026, 2 months ago · 2 results banked

8.38.3258.358.3758.42024202520267 Jul 2026, 09:15: 8.317 Aug 2026, 10:14: 8.4
Every result (2)
SampledResult as publishedReads as
17 Aug 2026, 10:148.4 8.4
7 Jul 2026, 09:158.3 8.3

Conductivity

at 25 °C · code 0077 · µS/cm

326 µS/cm

Sampled 17 Aug 2026, 2 months ago · 2 results banked

260280300320340µS/cm2024202520267 Jul 2026, 09:15: 276 µS/cm17 Aug 2026, 10:14: 326 µS/cm
Every result (2)
SampledResult as publishedReads as
17 Aug 2026, 10:14326 326 µS/cm
7 Jul 2026, 09:15276 276 µS/cm

Everything measured here

29 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 29 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 2 Jul 2026 – Aug 2026 110% 17 Aug 2026
Temperature of Water 0076 River water 2 Jul 2026 – Aug 2026 15 °C 17 Aug 2026
pH 0061 River water 2 Jul 2026 – Aug 2026 8.4 17 Aug 2026
Conductivity at 25 C 0077 River water 2 Jul 2026 – Aug 2026 326 µS/cm 17 Aug 2026
Barium, Dissolved 9446 River water 2 Jul 2026 – Aug 2026 370 µg/l 17 Aug 2026
Boron, Dissolved 9447 River water 2 Jul 2026 – Aug 2026 below 100 µg/l 17 Aug 2026
Cadmium 0108 River water 2 Jul 2026 – Aug 2026 0.22 µg/l 17 Aug 2026
Cadmium, Dissolved 0106 River water 2 Jul 2026 – Aug 2026 0.17 µg/l 17 Aug 2026
Calcium, Dissolved 0239 River water 2 Jul 2026 – Aug 2026 52 mg/l 17 Aug 2026
Carbon, Organic, Dissolved as C :- {DOC} 0301 River water 2 Jul 2026 – Aug 2026 1.8 mg/l 17 Aug 2026
Copper 6452 River water 2 Jul 2026 – Aug 2026 below 1 µg/l 17 Aug 2026
Copper, Dissolved 6450 River water 2 Jul 2026 – Aug 2026 below 1 µg/l 17 Aug 2026
Hardness, Total as CaCO3 0158 River water 2 Jul 2026 – Aug 2026 153 mg/l 17 Aug 2026
Iron, Dissolved 6460 River water 2 Jul 2026 – Aug 2026 below 30 µg/l 17 Aug 2026
Lead 0050 River water 2 Jul 2026 – Aug 2026 2.6 µg/l 17 Aug 2026
Lead, Dissolved 0052 River water 2 Jul 2026 – Aug 2026 below 2 µg/l 17 Aug 2026
Lithium, Dissolved 4201 River water 2 Jul 2026 – Aug 2026 below 100 µg/l 17 Aug 2026
Magnesium, Dissolved 0235 River water 2 Jul 2026 – Aug 2026 5.7 mg/l 17 Aug 2026
Manganese, Dissolved 6458 River water 2 Jul 2026 – Aug 2026 below 10 µg/l 17 Aug 2026
Nickel 6462 River water 2 Jul 2026 – Aug 2026 below 1 µg/l 17 Aug 2026
Nickel, Dissolved 3410 River water 2 Jul 2026 – Aug 2026 below 1 µg/l 17 Aug 2026
pH : In Situ 3169 River water 2 Jul 2026 – Aug 2026 8.32 17 Aug 2026
Potassium, Dissolved 0209 River water 2 Jul 2026 – Aug 2026 1.3 mg/l 17 Aug 2026
Sodium, Dissolved 0205 River water 2 Jul 2026 – Aug 2026 7.8 mg/l 17 Aug 2026
Solids, Suspended at 105 C 0135 River water 2 Jul 2026 – Aug 2026 below 3 mg/l 17 Aug 2026
Strontium, Filtered 6693 River water 2 Jul 2026 – Aug 2026 320 µg/l 17 Aug 2026
Sulphate, Dissolved as SO4 7859 River water 2 Jul 2026 – Aug 2026 17 mg/l 17 Aug 2026
Zinc 6455 River water 2 Jul 2026 – Aug 2026 22 µg/l 17 Aug 2026
Zinc, Dissolved 3408 River water 2 Jul 2026 – Aug 2026 16 µg/l 17 Aug 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.