A/BNE Rife Shripney Bypass Bridge

EA name: A/BNE RIFE SHRIPNEY BYPASS BR (also listed as “ALDINGBOURNE RIFE SHRIPNEY BYPASS BRIDGE”)
Environment Agency sampling point SO-F0003326 · 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
12 May 2026, 13:435 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
23 since 24 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 493980, 100580As published, to the nearest 10 m. Open in a map
River, by its own name
Aldingbourne Rife
River, by the map
Aldingbourne RifePlaced on the river its name gives, 9 m from the line.
Next gauge downstream
None tracedThe map stops before any gauge.Beside Bognor: too close to say above or below.
Why it was sampled
Monitoring (national agency policy) (23 samples)

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

117.8%

Sampled 12 May 2026, 5 months ago · 23 results banked

050100150200%20242025202624 Oct 2023, 08:32: 37.8%22 Nov 2023, 12:38: 71.5%7 Dec 2023, 08:52: 70.2%15 Jan 2024, 11:17: 87%19 Feb 2024, 12:35: 93.3%20 Mar 2024, 10:40: 89.1%17 Apr 2024, 09:10: 79.5%13 May 2024, 10:13: 27.1%18 Jun 2024, 09:27: 29.4%17 Jul 2024, 11:05: 30.6%21 Aug 2024, 12:15: 35.5%19 Sep 2024, 08:44: 27.5%29 Oct 2024, 15:48: 59.7%22 Nov 2024, 11:44: 74.3%3 Dec 2024, 12:07: 60.6%21 Jan 2025, 10:27: 77%4 Feb 2025, 14:33: 82.3%12 Mar 2025, 16:56: 113.5%6 Jan 2026, 13:56: 79.9%2 Feb 2026, 10:56: 65.5%12 Mar 2026, 13:34: 94%14 Apr 2026, 16:22: 159.5%12 May 2026, 13:43: 117.8%
Every result (23)
SampledResult as publishedReads as
12 May 2026, 13:43117.8 117.8%
14 Apr 2026, 16:22159.5 159.5%
12 Mar 2026, 13:3494 94%
2 Feb 2026, 10:5665.5 65.5%
6 Jan 2026, 13:5679.9 79.9%
12 Mar 2025, 16:56113.5 113.5%
4 Feb 2025, 14:3382.3 82.3%
21 Jan 2025, 10:2777 77%
3 Dec 2024, 12:0760.6 60.6%
22 Nov 2024, 11:4474.3 74.3%
29 Oct 2024, 15:4859.7 59.7%
19 Sep 2024, 08:4427.5 27.5%
21 Aug 2024, 12:1535.5 35.5%
17 Jul 2024, 11:0530.6 30.6%
18 Jun 2024, 09:2729.4 29.4%
13 May 2024, 10:1327.1 27.1%
17 Apr 2024, 09:1079.5 79.5%
20 Mar 2024, 10:4089.1 89.1%
19 Feb 2024, 12:3593.3 93.3%
15 Jan 2024, 11:1787 87%
7 Dec 2023, 08:5270.2 70.2%
22 Nov 2023, 12:3871.5 71.5%
24 Oct 2023, 08:3237.8 37.8%

Dissolved oxygen

as O2 · code 9924 · mg/l

12.4 mg/l

Sampled 12 May 2026, 5 months ago · 23 results banked

05101520mg/l20242025202624 Oct 2023, 08:32: 3.99 mg/l22 Nov 2023, 12:38: 8.19 mg/l7 Dec 2023, 08:52: 8.51 mg/l15 Jan 2024, 11:17: 11.4 mg/l19 Feb 2024, 12:35: 10.3 mg/l20 Mar 2024, 10:40: 9.65 mg/l17 Apr 2024, 09:10: 8.81 mg/l13 May 2024, 10:13: 2.59 mg/l18 Jun 2024, 09:27: 2.91 mg/l17 Jul 2024, 11:05: 2.93 mg/l21 Aug 2024, 12:15: 3.38 mg/l19 Sep 2024, 08:44: 2.72 mg/l29 Oct 2024, 15:48: 6.1 mg/l22 Nov 2024, 11:44: 9.36 mg/l3 Dec 2024, 12:07: 6.94 mg/l21 Jan 2025, 10:27: 9.67 mg/l4 Feb 2025, 14:33: 9.71 mg/l12 Mar 2025, 16:56: 13.2 mg/l6 Jan 2026, 13:56: 11.2 mg/l2 Feb 2026, 10:56: 7.75 mg/l12 Mar 2026, 13:34: 10.6 mg/l14 Apr 2026, 16:22: 17 mg/l12 May 2026, 13:43: 12.4 mg/l
Every result (23)
SampledResult as publishedReads as
12 May 2026, 13:4312.4 12.4 mg/l
14 Apr 2026, 16:2217 17 mg/l
12 Mar 2026, 13:3410.6 10.6 mg/l
2 Feb 2026, 10:567.75 7.75 mg/l
6 Jan 2026, 13:5611.2 11.2 mg/l
12 Mar 2025, 16:5613.2 13.2 mg/l
4 Feb 2025, 14:339.71 9.71 mg/l
21 Jan 2025, 10:279.67 9.67 mg/l
3 Dec 2024, 12:076.94 6.94 mg/l
22 Nov 2024, 11:449.36 9.36 mg/l
29 Oct 2024, 15:486.1 6.1 mg/l
19 Sep 2024, 08:442.72 2.72 mg/l
21 Aug 2024, 12:153.38 3.38 mg/l
17 Jul 2024, 11:052.93 2.93 mg/l
18 Jun 2024, 09:272.91 2.91 mg/l
13 May 2024, 10:132.59 2.59 mg/l
17 Apr 2024, 09:108.81 8.81 mg/l
20 Mar 2024, 10:409.65 9.65 mg/l
19 Feb 2024, 12:3510.3 10.3 mg/l
15 Jan 2024, 11:1711.4 11.4 mg/l
7 Dec 2023, 08:528.51 8.51 mg/l
22 Nov 2023, 12:388.19 8.19 mg/l
24 Oct 2023, 08:323.99 3.99 mg/l

Water temperature

code 0076 · °C

13 °C

Sampled 12 May 2026, 5 months ago · 23 results banked

05101520°C20242025202624 Oct 2023, 08:32: 12.8 °C22 Nov 2023, 12:38: 9.3 °C7 Dec 2023, 08:52: 7 °C15 Jan 2024, 11:17: 3.9 °C19 Feb 2024, 12:35: 10.7 °C20 Mar 2024, 10:40: 11.7 °C17 Apr 2024, 09:10: 10.7 °C13 May 2024, 10:13: 17.4 °C18 Jun 2024, 09:27: 15.8 °C17 Jul 2024, 11:05: 17.3 °C21 Aug 2024, 12:15: 17.6 °C19 Sep 2024, 08:44: 15.7 °C29 Oct 2024, 15:48: 14.3 °C22 Nov 2024, 11:44: 5.5 °C3 Dec 2024, 12:07: 9.3 °C21 Jan 2025, 10:27: 5.6 °C4 Feb 2025, 14:33: 8.1 °C12 Mar 2025, 16:56: 8.6 °C6 Jan 2026, 13:56: 1.5 °C2 Feb 2026, 10:56: 8 °C12 Mar 2026, 13:34: 10 °C14 Apr 2026, 16:22: 12.3 °C12 May 2026, 13:43: 13 °C
Every result (23)
SampledResult as publishedReads as
12 May 2026, 13:4313 13 °C
14 Apr 2026, 16:2212.3 12.3 °C
12 Mar 2026, 13:3410 10 °C
2 Feb 2026, 10:568 8 °C
6 Jan 2026, 13:561.5 1.5 °C
12 Mar 2025, 16:568.6 8.6 °C
4 Feb 2025, 14:338.1 8.1 °C
21 Jan 2025, 10:275.6 5.6 °C
3 Dec 2024, 12:079.3 9.3 °C
22 Nov 2024, 11:445.5 5.5 °C
29 Oct 2024, 15:4814.3 14.3 °C
19 Sep 2024, 08:4415.7 15.7 °C
21 Aug 2024, 12:1517.6 17.6 °C
17 Jul 2024, 11:0517.3 17.3 °C
18 Jun 2024, 09:2715.8 15.8 °C
13 May 2024, 10:1317.4 17.4 °C
17 Apr 2024, 09:1010.7 10.7 °C
20 Mar 2024, 10:4011.7 11.7 °C
19 Feb 2024, 12:3510.7 10.7 °C
15 Jan 2024, 11:173.9 3.9 °C
7 Dec 2023, 08:527 7 °C
22 Nov 2023, 12:389.3 9.3 °C
24 Oct 2023, 08:3212.8 12.8 °C

pH

code 0061

8.18

Sampled 12 May 2026, 5 months ago · 23 results banked

77.588.5920242025202624 Oct 2023, 08:32: 7.4522 Nov 2023, 12:38: 7.947 Dec 2023, 08:52: 7.9515 Jan 2024, 11:17: 7.9219 Feb 2024, 12:35: 7.8820 Mar 2024, 10:40: 7.8317 Apr 2024, 09:10: 7.9213 May 2024, 10:13: 7.4718 Jun 2024, 09:27: 7.4917 Jul 2024, 11:05: 7.7521 Aug 2024, 12:15: 7.5919 Sep 2024, 08:44: 7.4129 Oct 2024, 15:48: 7.5922 Nov 2024, 11:44: 7.83 Dec 2024, 12:07: 7.7821 Jan 2025, 10:27: 7.694 Feb 2025, 14:33: 7.7512 Mar 2025, 16:56: 8.066 Jan 2026, 13:56: 7.652 Feb 2026, 10:56: 7.5112 Mar 2026, 13:34: 7.8514 Apr 2026, 16:22: 8.5212 May 2026, 13:43: 8.18
Every result (23)
SampledResult as publishedReads as
12 May 2026, 13:438.18 8.18
14 Apr 2026, 16:228.52 8.52
12 Mar 2026, 13:347.85 7.85
2 Feb 2026, 10:567.51 7.51
6 Jan 2026, 13:567.65 7.65
12 Mar 2025, 16:568.06 8.06
4 Feb 2025, 14:337.75 7.75
21 Jan 2025, 10:277.69 7.69
3 Dec 2024, 12:077.78 7.78
22 Nov 2024, 11:447.8 7.8
29 Oct 2024, 15:487.59 7.59
19 Sep 2024, 08:447.41 7.41
21 Aug 2024, 12:157.59 7.59
17 Jul 2024, 11:057.75 7.75
18 Jun 2024, 09:277.49 7.49
13 May 2024, 10:137.47 7.47
17 Apr 2024, 09:107.92 7.92
20 Mar 2024, 10:407.83 7.83
19 Feb 2024, 12:357.88 7.88
15 Jan 2024, 11:177.92 7.92
7 Dec 2023, 08:527.95 7.95
22 Nov 2023, 12:387.94 7.94
24 Oct 2023, 08:327.45 7.45

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 12 May 2026, 5 months ago · 23 results banked

00.050.10.150.20.25mg/l20242025202624 Oct 2023, 08:32: 0.066 mg/l22 Nov 2023, 12:38: below 0.03 mg/l (not detected above this)7 Dec 2023, 08:52: 0.083 mg/l15 Jan 2024, 11:17: below 0.03 mg/l (not detected above this)19 Feb 2024, 12:35: below 0.03 mg/l (not detected above this)20 Mar 2024, 10:40: 0.035 mg/l17 Apr 2024, 09:10: 0.037 mg/l13 May 2024, 10:13: 0.21 mg/l18 Jun 2024, 09:27: 0.04 mg/l17 Jul 2024, 11:05: 0.053 mg/l21 Aug 2024, 12:15: 0.045 mg/l19 Sep 2024, 08:44: 0.038 mg/l29 Oct 2024, 15:48: 0.053 mg/l22 Nov 2024, 11:44: 0.14 mg/l3 Dec 2024, 12:07: 0.12 mg/l21 Jan 2025, 10:27: 0.063 mg/l4 Feb 2025, 14:33: 0.034 mg/l12 Mar 2025, 16:56: 0.046 mg/l6 Jan 2026, 13:56: 0.078 mg/l2 Feb 2026, 10:56: 0.17 mg/l12 Mar 2026, 13:34: below 0.03 mg/l (not detected above this)14 Apr 2026, 16:22: below 0.03 mg/l (not detected above this)12 May 2026, 13:43: below 0.03 mg/l (not detected above this)
Every result (23)
SampledResult as publishedReads as
12 May 2026, 13:43<0.03 below 0.03 mg/l (not detected above this)
14 Apr 2026, 16:22<0.03 below 0.03 mg/l (not detected above this)
12 Mar 2026, 13:34<0.03 below 0.03 mg/l (not detected above this)
2 Feb 2026, 10:560.17 0.17 mg/l
6 Jan 2026, 13:560.078 0.078 mg/l
12 Mar 2025, 16:560.046 0.046 mg/l
4 Feb 2025, 14:330.034 0.034 mg/l
21 Jan 2025, 10:270.063 0.063 mg/l
3 Dec 2024, 12:070.12 0.12 mg/l
22 Nov 2024, 11:440.14 0.14 mg/l
29 Oct 2024, 15:480.053 0.053 mg/l
19 Sep 2024, 08:440.038 0.038 mg/l
21 Aug 2024, 12:150.045 0.045 mg/l
17 Jul 2024, 11:050.053 0.053 mg/l
18 Jun 2024, 09:270.04 0.04 mg/l
13 May 2024, 10:130.21 0.21 mg/l
17 Apr 2024, 09:100.037 0.037 mg/l
20 Mar 2024, 10:400.035 0.035 mg/l
19 Feb 2024, 12:35<0.03 below 0.03 mg/l (not detected above this)
15 Jan 2024, 11:17<0.03 below 0.03 mg/l (not detected above this)
7 Dec 2023, 08:520.083 0.083 mg/l
22 Nov 2023, 12:38<0.03 below 0.03 mg/l (not detected above this)
24 Oct 2023, 08:320.066 0.066 mg/l

Nitrate

as nitrogen (N) · code 0117 · mg/l

16.9 mg/l

Sampled 12 May 2026, 5 months ago · 23 results banked

05101520mg/l20242025202624 Oct 2023, 08:32: 6.36 mg/l22 Nov 2023, 12:38: 4.79 mg/l7 Dec 2023, 08:52: 6.95 mg/l15 Jan 2024, 11:17: 8.58 mg/l19 Feb 2024, 12:35: 4.38 mg/l20 Mar 2024, 10:40: 5.95 mg/l17 Apr 2024, 09:10: 6.53 mg/l13 May 2024, 10:13: 2.99 mg/l18 Jun 2024, 09:27: 11.9 mg/l17 Jul 2024, 11:05: 10.9 mg/l21 Aug 2024, 12:15: 20 mg/l19 Sep 2024, 08:44: 7.18 mg/l29 Oct 2024, 15:48: 9.47 mg/l22 Nov 2024, 11:44: 8.34 mg/l3 Dec 2024, 12:07: 8.83 mg/l21 Jan 2025, 10:27: 11 mg/l4 Feb 2025, 14:33: 9.67 mg/l12 Mar 2025, 16:56: 16 mg/l6 Jan 2026, 13:56: 13 mg/l2 Feb 2026, 10:56: 4.28 mg/l12 Mar 2026, 13:34: 11 mg/l14 Apr 2026, 16:22: 13 mg/l12 May 2026, 13:43: 16.9 mg/l
Every result (23)
SampledResult as publishedReads as
12 May 2026, 13:4316.9 16.9 mg/l
14 Apr 2026, 16:2213 13 mg/l
12 Mar 2026, 13:3411 11 mg/l
2 Feb 2026, 10:564.28 4.28 mg/l
6 Jan 2026, 13:5613 13 mg/l
12 Mar 2025, 16:5616 16 mg/l
4 Feb 2025, 14:339.67 9.67 mg/l
21 Jan 2025, 10:2711 11 mg/l
3 Dec 2024, 12:078.83 8.83 mg/l
22 Nov 2024, 11:448.34 8.34 mg/l
29 Oct 2024, 15:489.47 9.47 mg/l
19 Sep 2024, 08:447.18 7.18 mg/l
21 Aug 2024, 12:1520 20 mg/l
17 Jul 2024, 11:0510.9 10.9 mg/l
18 Jun 2024, 09:2711.9 11.9 mg/l
13 May 2024, 10:132.99 2.99 mg/l
17 Apr 2024, 09:106.53 6.53 mg/l
20 Mar 2024, 10:405.95 5.95 mg/l
19 Feb 2024, 12:354.38 4.38 mg/l
15 Jan 2024, 11:178.58 8.58 mg/l
7 Dec 2023, 08:526.95 6.95 mg/l
22 Nov 2023, 12:384.79 4.79 mg/l
24 Oct 2023, 08:326.36 6.36 mg/l

Phosphate

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

0.45 mg/l

Sampled 12 May 2026, 5 months ago · 22 results banked

00.511.52mg/l20242025202624 Oct 2023, 08:32: 0.41 mg/l22 Nov 2023, 12:38: 0.21 mg/l7 Dec 2023, 08:52: 0.19 mg/l15 Jan 2024, 11:17: 0.14 mg/l19 Feb 2024, 12:35: 0.11 mg/l20 Mar 2024, 10:40: 0.054 mg/l17 Apr 2024, 09:10: 0.28 mg/l13 May 2024, 10:13: 0.33 mg/l18 Jun 2024, 09:27: 0.75 mg/l17 Jul 2024, 11:05: 0.86 mg/l21 Aug 2024, 12:15: 1.8 mg/l19 Sep 2024, 08:44: 0.55 mg/l29 Oct 2024, 15:48: 0.23 mg/l22 Nov 2024, 11:44: 0.27 mg/l21 Jan 2025, 10:27: 0.12 mg/l4 Feb 2025, 14:33: 0.095 mg/l12 Mar 2025, 16:56: 0.29 mg/l6 Jan 2026, 13:56: 0.12 mg/l2 Feb 2026, 10:56: 0.18 mg/l12 Mar 2026, 13:34: 0.13 mg/l14 Apr 2026, 16:22: 0.39 mg/l12 May 2026, 13:43: 0.45 mg/l
Every result (22)
SampledResult as publishedReads as
12 May 2026, 13:430.45 0.45 mg/l
14 Apr 2026, 16:220.39 0.39 mg/l
12 Mar 2026, 13:340.13 0.13 mg/l
2 Feb 2026, 10:560.18 0.18 mg/l
6 Jan 2026, 13:560.12 0.12 mg/l
12 Mar 2025, 16:560.29 0.29 mg/l
4 Feb 2025, 14:330.095 0.095 mg/l
21 Jan 2025, 10:270.12 0.12 mg/l
22 Nov 2024, 11:440.27 0.27 mg/l
29 Oct 2024, 15:480.23 0.23 mg/l
19 Sep 2024, 08:440.55 0.55 mg/l
21 Aug 2024, 12:151.8 1.8 mg/l
17 Jul 2024, 11:050.86 0.86 mg/l
18 Jun 2024, 09:270.75 0.75 mg/l
13 May 2024, 10:130.33 0.33 mg/l
17 Apr 2024, 09:100.28 0.28 mg/l
20 Mar 2024, 10:400.054 0.054 mg/l
19 Feb 2024, 12:350.11 0.11 mg/l
15 Jan 2024, 11:170.14 0.14 mg/l
7 Dec 2023, 08:520.19 0.19 mg/l
22 Nov 2023, 12:380.21 0.21 mg/l
24 Oct 2023, 08:320.41 0.41 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

834 µS/cm

Sampled 12 May 2026, 5 months ago · 23 results banked

4006008001000µS/cm20242025202624 Oct 2023, 08:32: 583 µS/cm22 Nov 2023, 12:38: 695 µS/cm7 Dec 2023, 08:52: 725 µS/cm15 Jan 2024, 11:17: 740 µS/cm19 Feb 2024, 12:35: 520 µS/cm20 Mar 2024, 10:40: 644 µS/cm17 Apr 2024, 09:10: 724 µS/cm13 May 2024, 10:13: 683 µS/cm18 Jun 2024, 09:27: 859 µS/cm17 Jul 2024, 11:05: 635 µS/cm21 Aug 2024, 12:15: 950 µS/cm19 Sep 2024, 08:44: 860 µS/cm29 Oct 2024, 15:48: 852 µS/cm22 Nov 2024, 11:44: 854 µS/cm3 Dec 2024, 12:07: 796 µS/cm21 Jan 2025, 10:27: 853 µS/cm4 Feb 2025, 14:33: 858 µS/cm12 Mar 2025, 16:56: 872 µS/cm6 Jan 2026, 13:56: 913 µS/cm2 Feb 2026, 10:56: 489 µS/cm12 Mar 2026, 13:34: 778 µS/cm14 Apr 2026, 16:22: 810 µS/cm12 May 2026, 13:43: 834 µS/cm
Every result (23)
SampledResult as publishedReads as
12 May 2026, 13:43834 834 µS/cm
14 Apr 2026, 16:22810 810 µS/cm
12 Mar 2026, 13:34778 778 µS/cm
2 Feb 2026, 10:56489 489 µS/cm
6 Jan 2026, 13:56913 913 µS/cm
12 Mar 2025, 16:56872 872 µS/cm
4 Feb 2025, 14:33858 858 µS/cm
21 Jan 2025, 10:27853 853 µS/cm
3 Dec 2024, 12:07796 796 µS/cm
22 Nov 2024, 11:44854 854 µS/cm
29 Oct 2024, 15:48852 852 µS/cm
19 Sep 2024, 08:44860 860 µS/cm
21 Aug 2024, 12:15950 950 µS/cm
17 Jul 2024, 11:05635 635 µS/cm
18 Jun 2024, 09:27859 859 µS/cm
13 May 2024, 10:13683 683 µS/cm
17 Apr 2024, 09:10724 724 µS/cm
20 Mar 2024, 10:40644 644 µS/cm
19 Feb 2024, 12:35520 520 µS/cm
15 Jan 2024, 11:17740 740 µS/cm
7 Dec 2023, 08:52725 725 µS/cm
22 Nov 2023, 12:38695 695 µS/cm
24 Oct 2023, 08:32583 583 µS/cm

Everything measured here

13 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 13 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 23 Oct 2023 – May 2026 117.8% 12 May 2026
Oxygen, Dissolved as O2 9924 River water 23 Oct 2023 – May 2026 12.4 mg/l 12 May 2026
Temperature of Water 0076 River water 23 Oct 2023 – May 2026 13 °C 12 May 2026
pH 0061 River water 23 Oct 2023 – May 2026 8.18 12 May 2026
Ammoniacal Nitrogen as N 0111 River water 23 Oct 2023 – May 2026 below 0.03 mg/l 12 May 2026
Nitrate as N 0117 River water 23 Oct 2023 – May 2026 16.9 mg/l 12 May 2026
Orthophosphate, reactive as P 0180 River water 22 Oct 2023 – May 2026 0.45 mg/l 12 May 2026
Conductivity at 25 C 0077 River water 23 Oct 2023 – May 2026 834 µS/cm 12 May 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 23 Oct 2023 – May 2026 250 mg/l 12 May 2026
Ammonia un-ionised as N 0119 River water 23 Oct 2023 – May 2026 below 0.00068 mg/l 12 May 2026
BOD : 5 Day ATU 0085 River water 18 Feb 2024 – May 2026 2.5 mg/l 12 May 2026
Nitrite as N 0118 River water 23 Oct 2023 – May 2026 0.071 mg/l 12 May 2026
Nitrogen, Total Oxidised as N 0116 River water 23 Oct 2023 – May 2026 17 mg/l 12 May 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.