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Hudeshope Beck downstream of Marl Beck

EA name: HUDESHOPE BECK D/S MARL BECK
Environment Agency sampling point NE-45100129 · 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
26 Aug 2026, 11:0836 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
26 since 18 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Monitoring (national agency policy)
Where
National Grid 394910, 528730As published, to the nearest 10 m. Open in a map
River, by its own name
Hudeshope Beck
River, by the map
Hudeshope BeckPlaced on the river its name gives, 3 m from the line.
Next gauge downstream
Middleton On the River Tees · 4.2 km along the river
Why it was sampled
Monitoring (national agency policy) (26 samples)

Main measurements, river water

Water temperature

code 0076 · °C

16.9 °C

Sampled 26 Aug 2026, 36 days ago · 26 results banked

05101520°C20242025202618 Oct 2023, 11:40: 8.8 °C7 Dec 2023, 11:32: 3.4 °C27 Feb 2024, 13:05: 4.7 °C23 May 2024, 13:00: 12 °C14 Aug 2024, 11:40: 17.6 °C18 Sep 2024, 11:27: 12.3 °C26 Nov 2024, 11:22: 5.4 °C30 Jan 2025, 10:26: 1.9 °C19 Mar 2025, 10:11: 4.1 °C23 Apr 2025, 10:12: 9.7 °C21 May 2025, 10:48: 13.5 °C27 Jun 2025, 11:18: 14.1 °C30 Jul 2025, 10:10: 16.4 °C27 Aug 2025, 10:37: 16.7 °C17 Sep 2025, 11:17: 10.7 °C22 Oct 2025, 10:31: 8.8 °C20 Nov 2025, 10:22: 1.7 °C11 Dec 2025, 10:31: 6.3 °C29 Jan 2026, 10:24: 3.6 °C18 Feb 2026, 11:48: 2.4 °C25 Mar 2026, 11:23: 6.5 °C23 Apr 2026, 12:04: 11.7 °C27 May 2026, 12:17: 17.9 °C17 Jun 2026, 10:52: 12.5 °C15 Jul 2026, 10:35: 17 °C26 Aug 2026, 11:08: 16.9 °C
Every result (26)
SampledResult as publishedReads as
26 Aug 2026, 11:0816.9 16.9 °C
15 Jul 2026, 10:3517 17 °C
17 Jun 2026, 10:5212.5 12.5 °C
27 May 2026, 12:1717.9 17.9 °C
23 Apr 2026, 12:0411.7 11.7 °C
25 Mar 2026, 11:236.5 6.5 °C
18 Feb 2026, 11:482.4 2.4 °C
29 Jan 2026, 10:243.6 3.6 °C
11 Dec 2025, 10:316.3 6.3 °C
20 Nov 2025, 10:221.7 1.7 °C
22 Oct 2025, 10:318.8 8.8 °C
17 Sep 2025, 11:1710.7 10.7 °C
27 Aug 2025, 10:3716.7 16.7 °C
30 Jul 2025, 10:1016.4 16.4 °C
27 Jun 2025, 11:1814.1 14.1 °C
21 May 2025, 10:4813.5 13.5 °C
23 Apr 2025, 10:129.7 9.7 °C
19 Mar 2025, 10:114.1 4.1 °C
30 Jan 2025, 10:261.9 1.9 °C
26 Nov 2024, 11:225.4 5.4 °C
18 Sep 2024, 11:2712.3 12.3 °C
14 Aug 2024, 11:4017.6 17.6 °C
23 May 2024, 13:0012 12 °C
27 Feb 2024, 13:054.7 4.7 °C
7 Dec 2023, 11:323.4 3.4 °C
18 Oct 2023, 11:408.8 8.8 °C

pH

code 0061

8.5

Sampled 26 Aug 2026, 36 days ago · 25 results banked

77.588.520242025202618 Oct 2023, 11:40: 8.17 Dec 2023, 11:32: 7.627 Feb 2024, 13:05: 7.823 May 2024, 13:00: 7.314 Aug 2024, 11:40: 8.318 Sep 2024, 11:27: 8.226 Nov 2024, 11:22: 7.730 Jan 2025, 10:26: 7.719 Mar 2025, 10:11: 7.923 Apr 2025, 10:12: 8.221 May 2025, 10:48: 8.227 Jun 2025, 11:18: 8.230 Jul 2025, 10:10: 8.327 Aug 2025, 10:37: 8.422 Oct 2025, 10:31: 7.820 Nov 2025, 10:22: 7.711 Dec 2025, 10:31: 7.429 Jan 2026, 10:24: 7.618 Feb 2026, 11:48: 7.625 Mar 2026, 11:23: 7.623 Apr 2026, 12:04: 827 May 2026, 12:17: 8.217 Jun 2026, 10:52: 8.115 Jul 2026, 10:35: 8.326 Aug 2026, 11:08: 8.5
Every result (25)
SampledResult as publishedReads as
26 Aug 2026, 11:088.5 8.5
15 Jul 2026, 10:358.3 8.3
17 Jun 2026, 10:528.1 8.1
27 May 2026, 12:178.2 8.2
23 Apr 2026, 12:048 8
25 Mar 2026, 11:237.6 7.6
18 Feb 2026, 11:487.6 7.6
29 Jan 2026, 10:247.6 7.6
11 Dec 2025, 10:317.4 7.4
20 Nov 2025, 10:227.7 7.7
22 Oct 2025, 10:317.8 7.8
27 Aug 2025, 10:378.4 8.4
30 Jul 2025, 10:108.3 8.3
27 Jun 2025, 11:188.2 8.2
21 May 2025, 10:488.2 8.2
23 Apr 2025, 10:128.2 8.2
19 Mar 2025, 10:117.9 7.9
30 Jan 2025, 10:267.7 7.7
26 Nov 2024, 11:227.7 7.7
18 Sep 2024, 11:278.2 8.2
14 Aug 2024, 11:408.3 8.3
23 May 2024, 13:007.3 7.3
27 Feb 2024, 13:057.8 7.8
7 Dec 2023, 11:327.6 7.6
18 Oct 2023, 11:408.1 8.1

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 26 Aug 2026, 36 days ago · 25 results banked

-0.500.51mg/l20242025202618 Oct 2023, 11:40: below 0.03 mg/l (not detected above this)7 Dec 2023, 11:32: below 0.03 mg/l (not detected above this)27 Feb 2024, 13:05: below 0.03 mg/l (not detected above this)23 May 2024, 13:00: below 0.03 mg/l (not detected above this)14 Aug 2024, 11:40: below 0.03 mg/l (not detected above this)18 Sep 2024, 11:27: below 0.03 mg/l (not detected above this)26 Nov 2024, 11:22: below 0.03 mg/l (not detected above this)30 Jan 2025, 10:26: below 0.03 mg/l (not detected above this)19 Mar 2025, 10:11: below 0.03 mg/l (not detected above this)23 Apr 2025, 10:12: below 0.03 mg/l (not detected above this)21 May 2025, 10:48: below 0.03 mg/l (not detected above this)27 Jun 2025, 11:18: below 0.03 mg/l (not detected above this)30 Jul 2025, 10:10: below 0.03 mg/l (not detected above this)27 Aug 2025, 10:37: below 0.03 mg/l (not detected above this)22 Oct 2025, 10:31: below 0.03 mg/l (not detected above this)20 Nov 2025, 10:22: below 0.03 mg/l (not detected above this)11 Dec 2025, 10:31: below 0.03 mg/l (not detected above this)29 Jan 2026, 10:24: below 0.03 mg/l (not detected above this)18 Feb 2026, 11:48: below 0.03 mg/l (not detected above this)25 Mar 2026, 11:23: below 0.03 mg/l (not detected above this)23 Apr 2026, 12:04: below 0.03 mg/l (not detected above this)27 May 2026, 12:17: below 0.03 mg/l (not detected above this)17 Jun 2026, 10:52: below 0.03 mg/l (not detected above this)15 Jul 2026, 10:35: below 0.03 mg/l (not detected above this)26 Aug 2026, 11:08: below 0.03 mg/l (not detected above this)
Every result (25)
SampledResult as publishedReads as
26 Aug 2026, 11:08<0.03 below 0.03 mg/l (not detected above this)
15 Jul 2026, 10:35<0.03 below 0.03 mg/l (not detected above this)
17 Jun 2026, 10:52<0.03 below 0.03 mg/l (not detected above this)
27 May 2026, 12:17<0.03 below 0.03 mg/l (not detected above this)
23 Apr 2026, 12:04<0.03 below 0.03 mg/l (not detected above this)
25 Mar 2026, 11:23<0.03 below 0.03 mg/l (not detected above this)
18 Feb 2026, 11:48<0.03 below 0.03 mg/l (not detected above this)
29 Jan 2026, 10:24<0.03 below 0.03 mg/l (not detected above this)
11 Dec 2025, 10:31<0.03 below 0.03 mg/l (not detected above this)
20 Nov 2025, 10:22<0.03 below 0.03 mg/l (not detected above this)
22 Oct 2025, 10:31<0.03 below 0.03 mg/l (not detected above this)
27 Aug 2025, 10:37<0.03 below 0.03 mg/l (not detected above this)
30 Jul 2025, 10:10<0.03 below 0.03 mg/l (not detected above this)
27 Jun 2025, 11:18<0.03 below 0.03 mg/l (not detected above this)
21 May 2025, 10:48<0.03 below 0.03 mg/l (not detected above this)
23 Apr 2025, 10:12<0.03 below 0.03 mg/l (not detected above this)
19 Mar 2025, 10:11<0.03 below 0.03 mg/l (not detected above this)
30 Jan 2025, 10:26<0.03 below 0.03 mg/l (not detected above this)
26 Nov 2024, 11:22<0.03 below 0.03 mg/l (not detected above this)
18 Sep 2024, 11:27<0.03 below 0.03 mg/l (not detected above this)
14 Aug 2024, 11:40<0.03 below 0.03 mg/l (not detected above this)
23 May 2024, 13:00<0.03 below 0.03 mg/l (not detected above this)
27 Feb 2024, 13:05<0.03 below 0.03 mg/l (not detected above this)
7 Dec 2023, 11:32<0.03 below 0.03 mg/l (not detected above this)
18 Oct 2023, 11:40<0.03 below 0.03 mg/l (not detected above this)

Phosphate

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

below 0.01 mg/l (not detected above this)

Sampled 26 Aug 2026, 36 days ago · 25 results banked

0.010.0120.0140.016mg/l20242025202618 Oct 2023, 11:40: below 0.01 mg/l (not detected above this)7 Dec 2023, 11:32: below 0.01 mg/l (not detected above this)27 Feb 2024, 13:05: below 0.01 mg/l (not detected above this)23 May 2024, 13:00: below 0.01 mg/l (not detected above this)14 Aug 2024, 11:40: below 0.01 mg/l (not detected above this)18 Sep 2024, 11:27: below 0.01 mg/l (not detected above this)26 Nov 2024, 11:22: below 0.01 mg/l (not detected above this)30 Jan 2025, 10:26: below 0.01 mg/l (not detected above this)19 Mar 2025, 10:11: below 0.01 mg/l (not detected above this)23 Apr 2025, 10:12: below 0.01 mg/l (not detected above this)21 May 2025, 10:48: below 0.01 mg/l (not detected above this)27 Jun 2025, 11:18: below 0.01 mg/l (not detected above this)30 Jul 2025, 10:10: below 0.01 mg/l (not detected above this)27 Aug 2025, 10:37: below 0.01 mg/l (not detected above this)22 Oct 2025, 10:31: below 0.01 mg/l (not detected above this)20 Nov 2025, 10:22: below 0.01 mg/l (not detected above this)11 Dec 2025, 10:31: 0.014 mg/l29 Jan 2026, 10:24: below 0.01 mg/l (not detected above this)18 Feb 2026, 11:48: below 0.01 mg/l (not detected above this)25 Mar 2026, 11:23: below 0.01 mg/l (not detected above this)23 Apr 2026, 12:04: below 0.01 mg/l (not detected above this)27 May 2026, 12:17: 0.016 mg/l17 Jun 2026, 10:52: below 0.01 mg/l (not detected above this)15 Jul 2026, 10:35: below 0.01 mg/l (not detected above this)26 Aug 2026, 11:08: below 0.01 mg/l (not detected above this)
Every result (25)
SampledResult as publishedReads as
26 Aug 2026, 11:08<0.01 below 0.01 mg/l (not detected above this)
15 Jul 2026, 10:35<0.01 below 0.01 mg/l (not detected above this)
17 Jun 2026, 10:52<0.01 below 0.01 mg/l (not detected above this)
27 May 2026, 12:170.016 0.016 mg/l
23 Apr 2026, 12:04<0.01 below 0.01 mg/l (not detected above this)
25 Mar 2026, 11:23<0.01 below 0.01 mg/l (not detected above this)
18 Feb 2026, 11:48<0.01 below 0.01 mg/l (not detected above this)
29 Jan 2026, 10:24<0.01 below 0.01 mg/l (not detected above this)
11 Dec 2025, 10:310.014 0.014 mg/l
20 Nov 2025, 10:22<0.01 below 0.01 mg/l (not detected above this)
22 Oct 2025, 10:31<0.01 below 0.01 mg/l (not detected above this)
27 Aug 2025, 10:37<0.01 below 0.01 mg/l (not detected above this)
30 Jul 2025, 10:10<0.01 below 0.01 mg/l (not detected above this)
27 Jun 2025, 11:18<0.01 below 0.01 mg/l (not detected above this)
21 May 2025, 10:48<0.01 below 0.01 mg/l (not detected above this)
23 Apr 2025, 10:12<0.01 below 0.01 mg/l (not detected above this)
19 Mar 2025, 10:11<0.01 below 0.01 mg/l (not detected above this)
30 Jan 2025, 10:26<0.01 below 0.01 mg/l (not detected above this)
26 Nov 2024, 11:22<0.01 below 0.01 mg/l (not detected above this)
18 Sep 2024, 11:27<0.01 below 0.01 mg/l (not detected above this)
14 Aug 2024, 11:40<0.01 below 0.01 mg/l (not detected above this)
23 May 2024, 13:00<0.01 below 0.01 mg/l (not detected above this)
27 Feb 2024, 13:05<0.01 below 0.01 mg/l (not detected above this)
7 Dec 2023, 11:32<0.01 below 0.01 mg/l (not detected above this)
18 Oct 2023, 11:40<0.01 below 0.01 mg/l (not detected above this)

Conductivity

at 25 °C · code 0077 · µS/cm

253 µS/cm

Sampled 26 Aug 2026, 36 days ago · 26 results banked

0100200300µS/cm20242025202618 Oct 2023, 11:40: 156 µS/cm7 Dec 2023, 11:32: 104 µS/cm27 Feb 2024, 13:05: 109 µS/cm23 May 2024, 13:00: 55 µS/cm14 Aug 2024, 11:40: 228 µS/cm18 Sep 2024, 11:27: 186 µS/cm26 Nov 2024, 11:22: 101 µS/cm30 Jan 2025, 10:26: 120 µS/cm19 Mar 2025, 10:11: 172 µS/cm23 Apr 2025, 10:12: 215 µS/cm21 May 2025, 10:48: 257 µS/cm27 Jun 2025, 11:18: 242 µS/cm30 Jul 2025, 10:10: 226 µS/cm27 Aug 2025, 10:37: 262 µS/cm17 Sep 2025, 11:17: 120 µS/cm22 Oct 2025, 10:31: 135 µS/cm20 Nov 2025, 10:22: 113 µS/cm11 Dec 2025, 10:31: 85 µS/cm29 Jan 2026, 10:24: 83 µS/cm18 Feb 2026, 11:48: 93 µS/cm25 Mar 2026, 11:23: 80 µS/cm23 Apr 2026, 12:04: 157 µS/cm27 May 2026, 12:17: 197 µS/cm17 Jun 2026, 10:52: 159 µS/cm15 Jul 2026, 10:35: 248 µS/cm26 Aug 2026, 11:08: 253 µS/cm
Every result (26)
SampledResult as publishedReads as
26 Aug 2026, 11:08253 253 µS/cm
15 Jul 2026, 10:35248 248 µS/cm
17 Jun 2026, 10:52159 159 µS/cm
27 May 2026, 12:17197 197 µS/cm
23 Apr 2026, 12:04157 157 µS/cm
25 Mar 2026, 11:2380 80 µS/cm
18 Feb 2026, 11:4893 93 µS/cm
29 Jan 2026, 10:2483 83 µS/cm
11 Dec 2025, 10:3185 85 µS/cm
20 Nov 2025, 10:22113 113 µS/cm
22 Oct 2025, 10:31135 135 µS/cm
17 Sep 2025, 11:17120 120 µS/cm
27 Aug 2025, 10:37262 262 µS/cm
30 Jul 2025, 10:10226 226 µS/cm
27 Jun 2025, 11:18242 242 µS/cm
21 May 2025, 10:48257 257 µS/cm
23 Apr 2025, 10:12215 215 µS/cm
19 Mar 2025, 10:11172 172 µS/cm
30 Jan 2025, 10:26120 120 µS/cm
26 Nov 2024, 11:22101 101 µS/cm
18 Sep 2024, 11:27186 186 µS/cm
14 Aug 2024, 11:40228 228 µS/cm
23 May 2024, 13:0055 55 µS/cm
27 Feb 2024, 13:05109 109 µS/cm
7 Dec 2023, 11:32104 104 µS/cm
18 Oct 2023, 11:40156 156 µS/cm

Everything measured here

54 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 54 rows
DeterminandMaterialResults First – lastLatest result
Temperature of Water 0076 River water 26 Oct 2023 – Aug 2026 16.9 °C 26 Aug 2026
pH 0061 River water 25 Oct 2023 – Aug 2026 8.5 26 Aug 2026
Ammoniacal Nitrogen as N 0111 River water 25 Oct 2023 – Aug 2026 below 0.03 mg/l 26 Aug 2026
Orthophosphate, reactive as P 0180 River water 25 Oct 2023 – Aug 2026 below 0.01 mg/l 26 Aug 2026
Conductivity at 25 C 0077 River water 26 Oct 2023 – Aug 2026 253 µS/cm 26 Aug 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 25 Oct 2023 – Aug 2026 100 mg/l 26 Aug 2026
Aluminium, Dissolved 6037 River water 5 Apr 2026 – Aug 2026 20 µg/l 26 Aug 2026
Barium 6062 River water 26 Oct 2023 – Aug 2026 76 µg/l 26 Aug 2026
Barium, Dissolved 9446 River water 26 Oct 2023 – Aug 2026 75 µg/l 26 Aug 2026
Boron 6059 River water 26 Oct 2023 – Aug 2026 below 100 µg/l 26 Aug 2026
Boron, Dissolved 9447 River water 26 Oct 2023 – Aug 2026 below 100 µg/l 26 Aug 2026
Cadmium 0108 River water 26 Oct 2023 – Aug 2026 0.096 µg/l 26 Aug 2026
Cadmium, Dissolved 0106 River water 26 Oct 2023 – Aug 2026 0.077 µg/l 26 Aug 2026
Calcium 0241 River water 26 Oct 2023 – Aug 2026 35 mg/l 26 Aug 2026
Calcium, Dissolved 0239 River water 26 Oct 2023 – Aug 2026 35 mg/l 26 Aug 2026
Carbon, Organic, Dissolved as C :- {DOC} 0301 River water 25 Oct 2023 – Aug 2026 1.5 mg/l 26 Aug 2026
Chloride 0172 River water 25 Oct 2023 – Aug 2026 7.9 mg/l 26 Aug 2026
Chromium 3164 River water 26 Oct 2023 – Aug 2026 below 0.5 µg/l 26 Aug 2026
Chromium, Dissolved 3409 River water 26 Oct 2023 – Aug 2026 below 0.5 µg/l 26 Aug 2026
Copper 6452 River water 26 Oct 2023 – Aug 2026 0.44 µg/l 26 Aug 2026
Copper : BLM Bioavailable 4821 River water 25 Oct 2023 – Aug 2026 0.21 µg/l 26 Aug 2026
Copper, Dissolved 6450 River water 26 Oct 2023 – Aug 2026 0.45 µg/l 26 Aug 2026
Hardness, Total as CaCO3 0158 River water 26 Oct 2023 – Aug 2026 114 mg/l 26 Aug 2026
Ionic Balance 7044 River water 25 Oct 2023 – Aug 2026 1.13% 26 Aug 2026
Iron 6051 River water 26 Oct 2023 – Aug 2026 below 30 µg/l 26 Aug 2026
Iron, Dissolved 6460 River water 26 Oct 2023 – Aug 2026 below 30 µg/l 26 Aug 2026
Lead 0050 River water 26 Oct 2023 – Aug 2026 41 µg/l 26 Aug 2026
Lead : BLM Bioavailable 3377 River water 25 Oct 2023 – Aug 2026 19 µg/l 26 Aug 2026
Lead, Dissolved 0052 River water 26 Oct 2023 – Aug 2026 28 µg/l 26 Aug 2026
Lithium 6064 River water 26 Oct 2023 – Aug 2026 below 100 µg/l 26 Aug 2026
Lithium, Dissolved 4201 River water 26 Oct 2023 – Aug 2026 below 100 µg/l 26 Aug 2026
Magnesium 0237 River water 26 Oct 2023 – Aug 2026 6.5 mg/l 26 Aug 2026
Magnesium, Dissolved 0235 River water 26 Oct 2023 – Aug 2026 6.5 mg/l 26 Aug 2026
Manganese 6050 River water 26 Oct 2023 – Aug 2026 13 µg/l 26 Aug 2026
Manganese : BLM Bioavailable 4820 River water 25 Oct 2023 – Aug 2026 5 µg/l 26 Aug 2026
Manganese, Dissolved 6458 River water 26 Oct 2023 – Aug 2026 below 10 µg/l 26 Aug 2026
Nickel 6462 River water 26 Oct 2023 – Aug 2026 below 0.5 µg/l 26 Aug 2026
Nickel : BLM Bioavailable 3878 River water 25 Oct 2023 – Aug 2026 0.25 µg/l 26 Aug 2026
Nickel, Dissolved 3410 River water 26 Oct 2023 – Aug 2026 below 0.5 µg/l 26 Aug 2026
Nitrite as N 0118 River water 25 Oct 2023 – Aug 2026 below 0.004 mg/l 26 Aug 2026
Nitrogen, Total Oxidised as N 0116 River water 25 Oct 2023 – Aug 2026 0.25 mg/l 26 Aug 2026
Potassium 0211 River water 26 Oct 2023 – Aug 2026 1.8 mg/l 26 Aug 2026
Potassium, Dissolved 0209 River water 26 Oct 2023 – Aug 2026 1.7 mg/l 26 Aug 2026
Silica, reactive as SiO2 0182 River water 25 Oct 2023 – Aug 2026 4.3 mg/l 26 Aug 2026
Sodium 0207 River water 26 Oct 2023 – Aug 2026 7.5 mg/l 26 Aug 2026
Sodium, Dissolved 0205 River water 26 Oct 2023 – Aug 2026 7.5 mg/l 26 Aug 2026
Solids, Suspended at 105 C 0135 River water 25 Oct 2023 – Aug 2026 below 3 mg/l 26 Aug 2026
Strontium 6063 River water 26 Oct 2023 – Aug 2026 160 µg/l 26 Aug 2026
Strontium, Filtered 6693 River water 26 Oct 2023 – Aug 2026 160 µg/l 26 Aug 2026
Sulphate as SO4 0183 River water 26 Oct 2023 – Aug 2026 17 mg/l 26 Aug 2026
Sulphate, Dissolved as SO4 7859 River water 26 Oct 2023 – Aug 2026 17 mg/l 26 Aug 2026
Zinc 6455 River water 26 Oct 2023 – Aug 2026 11 µg/l 26 Aug 2026
Zinc : BLM Bioavailable 4822 River water 25 Oct 2023 – Aug 2026 6.1 µg/l 26 Aug 2026
Zinc, Dissolved 3408 River water 26 Oct 2023 – Aug 2026 8.4 µg/l 26 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.