Shuttle-Black Prince

EA name: SHUTTLE-BLACK PRINCE (also listed as “RIVER SHUTTLE AT BLACK PRINCE”)
Environment Agency sampling point SO-E0000157 · 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, 10:4552 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
15 since 6 Jun 2024 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Environmental monitoring statutory (EU directives)
Where
National Grid 549943, 174112As published, to the nearest 1 m. Open in a map
River, by its own name
Shuttle
River, by the map
River ShuttlePlaced on the river its name gives, 3 m from the line.
Next gauge downstream
Hall Place On the River Cray · 0.2 km along the river
Nearest gauge upstream
Lamorbey Park On the Shuttle Tributary Cray · 3.4 km along the river
Why it was sampled
Environmental monitoring statutory (EU directives) (15 samples)

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

97.5%

Sampled 17 Aug 2026, 52 days ago · 15 results banked

8090100110120%2024202520266 Jun 2024, 12:47: 90.2%2 Jul 2024, 10:49: 93.7%12 Aug 2024, 11:08: 103.4%11 Sep 2024, 12:10: 94.3%17 Oct 2024, 12:09: 94.7%11 Nov 2024, 11:57: 89.3%2 Dec 2024, 11:32: 94.6%7 Jan 2025, 10:20: 98.1%4 Feb 2025, 10:14: 99.1%12 Mar 2025, 08:56: 98.6%14 Apr 2026, 15:06: 112%19 May 2026, 12:05: 97.4%2 Jun 2026, 13:22: 87.8%2 Jul 2026, 10:35: 103.2%17 Aug 2026, 10:45: 97.5%
Every result (15)
SampledResult as publishedReads as
17 Aug 2026, 10:4597.5 97.5%
2 Jul 2026, 10:35103.2 103.2%
2 Jun 2026, 13:2287.8 87.8%
19 May 2026, 12:0597.4 97.4%
14 Apr 2026, 15:06112 112%
12 Mar 2025, 08:5698.6 98.6%
4 Feb 2025, 10:1499.1 99.1%
7 Jan 2025, 10:2098.1 98.1%
2 Dec 2024, 11:3294.6 94.6%
11 Nov 2024, 11:5789.3 89.3%
17 Oct 2024, 12:0994.7 94.7%
11 Sep 2024, 12:1094.3 94.3%
12 Aug 2024, 11:08103.4 103.4%
2 Jul 2024, 10:4993.7 93.7%
6 Jun 2024, 12:4790.2 90.2%

Dissolved oxygen

as O2 · code 9924 · mg/l

9 mg/l

Sampled 17 Aug 2026, 52 days ago · 15 results banked

8910111213mg/l2024202520266 Jun 2024, 12:47: 9.17 mg/l2 Jul 2024, 10:49: 9.34 mg/l12 Aug 2024, 11:08: 9.3 mg/l11 Sep 2024, 12:10: 9.72 mg/l17 Oct 2024, 12:09: 9.48 mg/l11 Nov 2024, 11:57: 10 mg/l2 Dec 2024, 11:32: 10.6 mg/l7 Jan 2025, 10:20: 12.2 mg/l4 Feb 2025, 10:14: 12 mg/l12 Mar 2025, 08:56: 11.9 mg/l14 Apr 2026, 15:06: 11.8 mg/l19 May 2026, 12:05: 10 mg/l2 Jun 2026, 13:22: 8.26 mg/l2 Jul 2026, 10:35: 9.57 mg/l17 Aug 2026, 10:45: 9 mg/l
Every result (15)
SampledResult as publishedReads as
17 Aug 2026, 10:459 9 mg/l
2 Jul 2026, 10:359.57 9.57 mg/l
2 Jun 2026, 13:228.26 8.26 mg/l
19 May 2026, 12:0510 10 mg/l
14 Apr 2026, 15:0611.8 11.8 mg/l
12 Mar 2025, 08:5611.9 11.9 mg/l
4 Feb 2025, 10:1412 12 mg/l
7 Jan 2025, 10:2012.2 12.2 mg/l
2 Dec 2024, 11:3210.6 10.6 mg/l
11 Nov 2024, 11:5710 10 mg/l
17 Oct 2024, 12:099.48 9.48 mg/l
11 Sep 2024, 12:109.72 9.72 mg/l
12 Aug 2024, 11:089.3 9.3 mg/l
2 Jul 2024, 10:499.34 9.34 mg/l
6 Jun 2024, 12:479.17 9.17 mg/l

Water temperature

code 0076 · °C

19.1 °C

Sampled 17 Aug 2026, 52 days ago · 15 results banked

510152025°C2024202520266 Jun 2024, 12:47: 14.5 °C2 Jul 2024, 10:49: 15.4 °C12 Aug 2024, 11:08: 20.4 °C11 Sep 2024, 12:10: 13.9 °C17 Oct 2024, 12:09: 15.2 °C11 Nov 2024, 11:57: 10.2 °C2 Dec 2024, 11:32: 10.1 °C7 Jan 2025, 10:20: 5.9 °C4 Feb 2025, 10:14: 7.1 °C12 Mar 2025, 08:56: 7.2 °C14 Apr 2026, 15:06: 12.8 °C19 May 2026, 12:05: 13.9 °C2 Jun 2026, 13:22: 18.2 °C2 Jul 2026, 10:35: 18.9 °C17 Aug 2026, 10:45: 19.1 °C
Every result (15)
SampledResult as publishedReads as
17 Aug 2026, 10:4519.1 19.1 °C
2 Jul 2026, 10:3518.9 18.9 °C
2 Jun 2026, 13:2218.2 18.2 °C
19 May 2026, 12:0513.9 13.9 °C
14 Apr 2026, 15:0612.8 12.8 °C
12 Mar 2025, 08:567.2 7.2 °C
4 Feb 2025, 10:147.1 7.1 °C
7 Jan 2025, 10:205.9 5.9 °C
2 Dec 2024, 11:3210.1 10.1 °C
11 Nov 2024, 11:5710.2 10.2 °C
17 Oct 2024, 12:0915.2 15.2 °C
11 Sep 2024, 12:1013.9 13.9 °C
12 Aug 2024, 11:0820.4 20.4 °C
2 Jul 2024, 10:4915.4 15.4 °C
6 Jun 2024, 12:4714.5 14.5 °C

pH

code 0061

7.9

Sampled 17 Aug 2026, 52 days ago · 15 results banked

7.67.888.22024202520266 Jun 2024, 12:47: 7.92 Jul 2024, 10:49: 8.0212 Aug 2024, 11:08: 7.8911 Sep 2024, 12:10: 8.117 Oct 2024, 12:09: 8.0611 Nov 2024, 11:57: 7.972 Dec 2024, 11:32: 8.017 Jan 2025, 10:20: 8.024 Feb 2025, 10:14: 8.1212 Mar 2025, 08:56: 7.9114 Apr 2026, 15:06: 8.1919 May 2026, 12:05: 82 Jun 2026, 13:22: 7.672 Jul 2026, 10:35: 7.9717 Aug 2026, 10:45: 7.9
Every result (15)
SampledResult as publishedReads as
17 Aug 2026, 10:457.9 7.9
2 Jul 2026, 10:357.97 7.97
2 Jun 2026, 13:227.67 7.67
19 May 2026, 12:058 8
14 Apr 2026, 15:068.19 8.19
12 Mar 2025, 08:567.91 7.91
4 Feb 2025, 10:148.12 8.12
7 Jan 2025, 10:208.02 8.02
2 Dec 2024, 11:328.01 8.01
11 Nov 2024, 11:577.97 7.97
17 Oct 2024, 12:098.06 8.06
11 Sep 2024, 12:108.1 8.1
12 Aug 2024, 11:087.89 7.89
2 Jul 2024, 10:498.02 8.02
6 Jun 2024, 12:477.9 7.9

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 17 Aug 2026, 52 days ago · 15 results banked

00.10.20.30.4mg/l2024202520266 Jun 2024, 12:47: 0.12 mg/l2 Jul 2024, 10:49: 0.19 mg/l12 Aug 2024, 11:08: 0.038 mg/l11 Sep 2024, 12:10: 0.064 mg/l17 Oct 2024, 12:09: 0.034 mg/l11 Nov 2024, 11:57: 0.038 mg/l2 Dec 2024, 11:32: 0.18 mg/l7 Jan 2025, 10:20: 0.1 mg/l4 Feb 2025, 10:14: 0.15 mg/l12 Mar 2025, 08:56: 0.081 mg/l14 Apr 2026, 15:06: 0.39 mg/l19 May 2026, 12:05: 0.076 mg/l2 Jun 2026, 13:22: 0.37 mg/l2 Jul 2026, 10:35: 0.038 mg/l17 Aug 2026, 10:45: below 0.03 mg/l (not detected above this)
Every result (15)
SampledResult as publishedReads as
17 Aug 2026, 10:45<0.03 below 0.03 mg/l (not detected above this)
2 Jul 2026, 10:350.038 0.038 mg/l
2 Jun 2026, 13:220.37 0.37 mg/l
19 May 2026, 12:050.076 0.076 mg/l
14 Apr 2026, 15:060.39 0.39 mg/l
12 Mar 2025, 08:560.081 0.081 mg/l
4 Feb 2025, 10:140.15 0.15 mg/l
7 Jan 2025, 10:200.1 0.1 mg/l
2 Dec 2024, 11:320.18 0.18 mg/l
11 Nov 2024, 11:570.038 0.038 mg/l
17 Oct 2024, 12:090.034 0.034 mg/l
11 Sep 2024, 12:100.064 0.064 mg/l
12 Aug 2024, 11:080.038 0.038 mg/l
2 Jul 2024, 10:490.19 0.19 mg/l
6 Jun 2024, 12:470.12 0.12 mg/l

Nitrate

as nitrogen (N) · code 0117 · mg/l

4.59 mg/l

Sampled 17 Aug 2026, 52 days ago · 14 results banked

123456mg/l2024202520266 Jun 2024, 12:47: 5.06 mg/l2 Jul 2024, 10:49: 4.85 mg/l12 Aug 2024, 11:08: 4.36 mg/l11 Sep 2024, 12:10: 3.76 mg/l17 Oct 2024, 12:09: 3.28 mg/l11 Nov 2024, 11:57: 5.14 mg/l7 Jan 2025, 10:20: 4.77 mg/l4 Feb 2025, 10:14: 4.56 mg/l12 Mar 2025, 08:56: 4.17 mg/l14 Apr 2026, 15:06: 3.23 mg/l19 May 2026, 12:05: 4.14 mg/l2 Jun 2026, 13:22: 1.82 mg/l2 Jul 2026, 10:35: 4.88 mg/l17 Aug 2026, 10:45: 4.59 mg/l
Every result (14)
SampledResult as publishedReads as
17 Aug 2026, 10:454.59 4.59 mg/l
2 Jul 2026, 10:354.88 4.88 mg/l
2 Jun 2026, 13:221.82 1.82 mg/l
19 May 2026, 12:054.14 4.14 mg/l
14 Apr 2026, 15:063.23 3.23 mg/l
12 Mar 2025, 08:564.17 4.17 mg/l
4 Feb 2025, 10:144.56 4.56 mg/l
7 Jan 2025, 10:204.77 4.77 mg/l
11 Nov 2024, 11:575.14 5.14 mg/l
17 Oct 2024, 12:093.28 3.28 mg/l
11 Sep 2024, 12:103.76 3.76 mg/l
12 Aug 2024, 11:084.36 4.36 mg/l
2 Jul 2024, 10:494.85 4.85 mg/l
6 Jun 2024, 12:475.06 5.06 mg/l

Phosphate

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

0.67 mg/l

Sampled 17 Aug 2026, 52 days ago · 14 results banked

00.20.40.60.8mg/l2024202520266 Jun 2024, 12:47: 0.39 mg/l2 Jul 2024, 10:49: 0.41 mg/l12 Aug 2024, 11:08: 0.39 mg/l11 Sep 2024, 12:10: 0.43 mg/l17 Oct 2024, 12:09: 0.25 mg/l11 Nov 2024, 11:57: 0.4 mg/l7 Jan 2025, 10:20: 0.15 mg/l4 Feb 2025, 10:14: 0.21 mg/l12 Mar 2025, 08:56: 0.22 mg/l14 Apr 2026, 15:06: 0.28 mg/l19 May 2026, 12:05: 0.4 mg/l2 Jun 2026, 13:22: 0.32 mg/l2 Jul 2026, 10:35: 0.54 mg/l17 Aug 2026, 10:45: 0.67 mg/l
Every result (14)
SampledResult as publishedReads as
17 Aug 2026, 10:450.67 0.67 mg/l
2 Jul 2026, 10:350.54 0.54 mg/l
2 Jun 2026, 13:220.32 0.32 mg/l
19 May 2026, 12:050.4 0.4 mg/l
14 Apr 2026, 15:060.28 0.28 mg/l
12 Mar 2025, 08:560.22 0.22 mg/l
4 Feb 2025, 10:140.21 0.21 mg/l
7 Jan 2025, 10:200.15 0.15 mg/l
11 Nov 2024, 11:570.4 0.4 mg/l
17 Oct 2024, 12:090.25 0.25 mg/l
11 Sep 2024, 12:100.43 0.43 mg/l
12 Aug 2024, 11:080.39 0.39 mg/l
2 Jul 2024, 10:490.41 0.41 mg/l
6 Jun 2024, 12:470.39 0.39 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

781 µS/cm

Sampled 17 Aug 2026, 52 days ago · 15 results banked

200400600800µS/cm2024202520266 Jun 2024, 12:47: 787 µS/cm2 Jul 2024, 10:49: 793 µS/cm12 Aug 2024, 11:08: 772 µS/cm11 Sep 2024, 12:10: 713 µS/cm17 Oct 2024, 12:09: 698 µS/cm11 Nov 2024, 11:57: 698 µS/cm2 Dec 2024, 11:32: 704 µS/cm7 Jan 2025, 10:20: 722 µS/cm4 Feb 2025, 10:14: 798 µS/cm12 Mar 2025, 08:56: 793 µS/cm14 Apr 2026, 15:06: 644 µS/cm19 May 2026, 12:05: 783 µS/cm2 Jun 2026, 13:22: 367 µS/cm2 Jul 2026, 10:35: 786 µS/cm17 Aug 2026, 10:45: 781 µS/cm
Every result (15)
SampledResult as publishedReads as
17 Aug 2026, 10:45781 781 µS/cm
2 Jul 2026, 10:35786 786 µS/cm
2 Jun 2026, 13:22367 367 µS/cm
19 May 2026, 12:05783 783 µS/cm
14 Apr 2026, 15:06644 644 µS/cm
12 Mar 2025, 08:56793 793 µS/cm
4 Feb 2025, 10:14798 798 µS/cm
7 Jan 2025, 10:20722 722 µS/cm
2 Dec 2024, 11:32704 704 µS/cm
11 Nov 2024, 11:57698 698 µS/cm
17 Oct 2024, 12:09698 698 µS/cm
11 Sep 2024, 12:10713 713 µS/cm
12 Aug 2024, 11:08772 772 µS/cm
2 Jul 2024, 10:49793 793 µS/cm
6 Jun 2024, 12:47787 787 µS/cm

Everything measured here

59 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 59 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 15 Jun 2024 – Aug 2026 97.5% 17 Aug 2026
Oxygen, Dissolved as O2 9924 River water 15 Jun 2024 – Aug 2026 9 mg/l 17 Aug 2026
Temperature of Water 0076 River water 15 Jun 2024 – Aug 2026 19.1 °C 17 Aug 2026
pH 0061 River water 15 Jun 2024 – Aug 2026 7.9 17 Aug 2026
Ammoniacal Nitrogen as N 0111 River water 15 Jun 2024 – Aug 2026 below 0.03 mg/l 17 Aug 2026
Nitrate as N 0117 River water 14 Jun 2024 – Aug 2026 4.59 mg/l 17 Aug 2026
Orthophosphate, reactive as P 0180 River water 14 Jun 2024 – Aug 2026 0.67 mg/l 17 Aug 2026
Conductivity at 25 C 0077 River water 15 Jun 2024 – Aug 2026 781 µS/cm 17 Aug 2026
11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 River water 1 Aug 2024 – Aug 2024 below 0.001 µg/l 12 Aug 2024
2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 River water 1 Aug 2024 – Aug 2024 below 0.001 µg/l 12 Aug 2024
2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 River water 1 Aug 2024 – Aug 2024 below 0.001 µg/l 12 Aug 2024
2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 River water 1 Aug 2024 – Aug 2024 below 0.002 µg/l 12 Aug 2024
2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 River water 1 Aug 2024 – Aug 2024 below 0.0005 µg/l 12 Aug 2024
2H,2H,3H,3H-Perfluorooctanoic acid 2989 River water 1 Aug 2024 – Aug 2024 below 0.001 µg/l 12 Aug 2024
3-Perfluoroheptylpropanoic acid 2925 River water 1 Aug 2024 – Aug 2024 below 0.0005 µg/l 12 Aug 2024
3:3 Fluorotelomer carboxylic acid 2926 River water 1 Aug 2024 – Aug 2024 below 0.004 µg/l 12 Aug 2024
4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 River water 1 Aug 2024 – Aug 2024 below 0.005 µg/l 12 Aug 2024
4:2 Fluorotelomer sulfonic acid 2987 River water 1 Aug 2024 – Aug 2024 below 0.0005 µg/l 12 Aug 2024
6:2 Fluorotelomer sulfonic acid 2984 River water 1 Aug 2024 – Aug 2024 below 0.001 µg/l 12 Aug 2024
8:2 Fluorotelomer sulfonic acid 2983 River water 1 Aug 2024 – Aug 2024 below 0.001 µg/l 12 Aug 2024
9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 River water 1 Aug 2024 – Aug 2024 below 0.0005 µg/l 12 Aug 2024
Alkalinity to pH 4.5 as CaCO3 0162 River water 15 Jun 2024 – Aug 2026 220 mg/l 17 Aug 2026
Ammonia un-ionised as N 0119 River water 15 Jun 2024 – Aug 2026 below 0.00085 mg/l 17 Aug 2026
Hexafluoropropylene oxide dimer acid (Gen X) 2981 River water 1 Aug 2024 – Aug 2024 below 0.001 µg/l 12 Aug 2024
N-Ethylperfluorooctanesulfonamide 2977 River water 1 Aug 2024 – Aug 2024 below 0.002 µg/l 12 Aug 2024
N-methylperfluorooctanesulfonamide 2975 River water 1 Aug 2024 – Aug 2024 below 0.002 µg/l 12 Aug 2024
Nitrite as N 0118 River water 14 Jun 2024 – Aug 2026 0.0069 mg/l 17 Aug 2026
Nitrogen, Total Oxidised as N 0116 River water 15 Jun 2024 – Aug 2026 4.6 mg/l 17 Aug 2026
Perfluoro(2-ethoxyethane)sulfonic acid 2924 River water 1 Aug 2024 – Aug 2024 below 0.0005 µg/l 12 Aug 2024
Perfluoro(4-methoxybutanoic) acid 2923 River water 1 Aug 2024 – Aug 2024 below 0.0005 µg/l 12 Aug 2024
Perfluoro-3,6-dioxaheptanoic acid 2922 River water 1 Aug 2024 – Aug 2024 below 0.0005 µg/l 12 Aug 2024
Perfluoro-3-methoxypropanoic acid 2921 River water 1 Aug 2024 – Aug 2024 below 0.0005 µg/l 12 Aug 2024
Perfluoro-4-ethylcyclohexanesulfonic acid 2973 River water 1 Aug 2024 – Aug 2024 below 0.0005 µg/l 12 Aug 2024
Perfluorobutanesulfonic acid 2972 River water 1 Aug 2024 – Aug 2024 0.006 µg/l 12 Aug 2024
Perfluorobutanoic acid 2995 River water 1 Aug 2024 – Aug 2024 0.0051 µg/l 12 Aug 2024
Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 River water 1 Aug 2024 – Aug 2024 0.00091 µg/l 12 Aug 2024
Perfluorodecanesulfonic acid 2969 River water 1 Aug 2024 – Aug 2024 below 0.002 µg/l 12 Aug 2024
Perfluorodecanoic acid 8892 River water 1 Aug 2024 – Aug 2024 below 0.002 µg/l 12 Aug 2024
Perfluorododecane sulfonic acid 2968 River water 1 Aug 2024 – Aug 2024 below 0.005 µg/l 12 Aug 2024
Perfluorododecanoic acid 8894 River water 1 Aug 2024 – Aug 2024 below 0.002 µg/l 12 Aug 2024
Perfluoroheptanesulfonic acid 2967 River water 1 Aug 2024 – Aug 2024 below 0.0005 µg/l 12 Aug 2024
Perfluoroheptanoic acid 8889 River water 1 Aug 2024 – Aug 2024 0.0034 µg/l 12 Aug 2024
Perfluorohexanesulfonamide 2965 River water 1 Aug 2024 – Aug 2024 below 0.0005 µg/l 12 Aug 2024
Perfluorohexanesulfonic acid (B) 2944 River water 1 Aug 2024 – Aug 2024 0.00082 µg/l 12 Aug 2024
Perfluorohexanesulfonic acid (L) 2964 River water 1 Aug 2024 – Aug 2024 0.0043 µg/l 12 Aug 2024
Perfluorohexanoic acid 8888 River water 1 Aug 2024 – Aug 2024 0.0073 µg/l 12 Aug 2024
Perfluorononanesulfonic acid 2963 River water 1 Aug 2024 – Aug 2024 below 0.0005 µg/l 12 Aug 2024
Perfluorononanoic acid 8891 River water 1 Aug 2024 – Aug 2024 below 0.001 µg/l 12 Aug 2024
Perfluorooctadecanoic acid 2962 River water 1 Aug 2024 – Aug 2024 below 0.002 µg/l 12 Aug 2024
Perfluorooctanesulfonamide 2961 River water 1 Aug 2024 – Aug 2024 below 0.001 µg/l 12 Aug 2024
Perfluorooctanesulfonic acid (branched) 2960 River water 1 Aug 2024 – Aug 2024 0.0036 µg/l 12 Aug 2024
Perfluorooctanesulfonic acid (linear) 2959 River water 1 Aug 2024 – Aug 2024 0.0045 µg/l 12 Aug 2024
Perfluorooctanoic acid 8890 River water 1 Aug 2024 – Aug 2024 0.0046 µg/l 12 Aug 2024
Perfluoropentanesulfonic acid 2957 River water 1 Aug 2024 – Aug 2024 0.00066 µg/l 12 Aug 2024
Perfluoropentanoic acid 8887 River water 1 Aug 2024 – Aug 2024 0.0082 µg/l 12 Aug 2024
Perfluorotetradecanoic acid 8895 River water 1 Aug 2024 – Aug 2024 below 0.006 µg/l 12 Aug 2024
Perfluorotridecanoic acid 2955 River water 1 Aug 2024 – Aug 2024 below 0.005 µg/l 12 Aug 2024
Perfluoroundecane sulfonic acid 2953 River water 1 Aug 2024 – Aug 2024 below 0.004 µg/l 12 Aug 2024
Perfluoroundecanoic acid 8893 River water 1 Aug 2024 – Aug 2024 below 0.002 µg/l 12 Aug 2024

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.