Rattlesden River upstream of confluence (River Gip.)

EA name: RATTLESDEN R. U/S OF CONFLUENCE (R.GIP.)
Environment Agency sampling point AN-GIP060 · 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
4 Sep 2026, 08:5827 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
23 since 13 Jun 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Environmental monitoring statutory (EU directives)
Where
National Grid 605700, 258000As published, to the nearest 100 m (so up to about 70 m out). Open in a map
River, by its own name
Rattlesden
River, by the map
Rattlesden RiverPlaced on the river its name gives, 36 m from the line.
Next gauge downstream
Stowmarket On the River Gipping · 0.1 km along the river
Nearest gauge upstream
Rattlesden On the Rattlesden River · 10 km along the river
Why it was sampled
Environmental monitoring statutory (EU directives) (23 samples)

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

69.4%

Sampled 4 Sep 2026, 27 days ago · 23 results banked

6080100120140%20242025202613 Jun 2024, 10:59: 94.5%1 Jul 2024, 09:47: 77.7%2 Aug 2024, 10:28: 76.3%12 Sep 2024, 09:34: 71.1%3 Oct 2024, 11:05: 94%5 Nov 2024, 08:25: 75.3%19 Dec 2024, 12:35: 91.5%30 Jan 2025, 11:39: 96.6%14 Feb 2025, 13:13: 101.2%14 Mar 2025, 13:32: 108.5%7 Apr 2025, 10:40: 125.5%8 Oct 2025, 12:45: 76.6%13 Nov 2025, 09:34: 63%9 Dec 2025, 12:43: 90%27 Jan 2026, 10:12: 94.6%11 Feb 2026, 12:29: 97.3%6 Mar 2026, 11:49: 100.1%24 Apr 2026, 10:55: 101.2%7 May 2026, 08:40: 70%9 Jun 2026, 10:15: 76.8%3 Jul 2026, 08:37: 64.2%18 Aug 2026, 09:14: 61.6%4 Sep 2026, 08:58: 69.4%
Every result (23)
SampledResult as publishedReads as
4 Sep 2026, 08:5869.4 69.4%
18 Aug 2026, 09:1461.6 61.6%
3 Jul 2026, 08:3764.2 64.2%
9 Jun 2026, 10:1576.8 76.8%
7 May 2026, 08:4070 70%
24 Apr 2026, 10:55101.2 101.2%
6 Mar 2026, 11:49100.1 100.1%
11 Feb 2026, 12:2997.3 97.3%
27 Jan 2026, 10:1294.6 94.6%
9 Dec 2025, 12:4390 90%
13 Nov 2025, 09:3463 63%
8 Oct 2025, 12:4576.6 76.6%
7 Apr 2025, 10:40125.5 125.5%
14 Mar 2025, 13:32108.5 108.5%
14 Feb 2025, 13:13101.2 101.2%
30 Jan 2025, 11:3996.6 96.6%
19 Dec 2024, 12:3591.5 91.5%
5 Nov 2024, 08:2575.3 75.3%
3 Oct 2024, 11:0594 94%
12 Sep 2024, 09:3471.1 71.1%
2 Aug 2024, 10:2876.3 76.3%
1 Jul 2024, 09:4777.7 77.7%
13 Jun 2024, 10:5994.5 94.5%

Dissolved oxygen

as O2 · code 9924 · mg/l

6.66 mg/l

Sampled 4 Sep 2026, 27 days ago · 23 results banked

57.51012.515mg/l20242025202613 Jun 2024, 10:59: 9.93 mg/l1 Jul 2024, 09:47: 7.75 mg/l2 Aug 2024, 10:28: 7.19 mg/l12 Sep 2024, 09:34: 7.73 mg/l3 Oct 2024, 11:05: 9.99 mg/l5 Nov 2024, 08:25: 8.29 mg/l19 Dec 2024, 12:35: 10.7 mg/l30 Jan 2025, 11:39: 12.2 mg/l14 Feb 2025, 13:13: 12.9 mg/l14 Mar 2025, 13:32: 13.3 mg/l7 Apr 2025, 10:40: 14 mg/l8 Oct 2025, 12:45: 8.02 mg/l13 Nov 2025, 09:34: 6.79 mg/l9 Dec 2025, 12:43: 10.1 mg/l27 Jan 2026, 10:12: 11.7 mg/l11 Feb 2026, 12:29: 11.1 mg/l6 Mar 2026, 11:49: 11.6 mg/l24 Apr 2026, 10:55: 11 mg/l7 May 2026, 08:40: 7.7 mg/l9 Jun 2026, 10:15: 7.98 mg/l3 Jul 2026, 08:37: 6.36 mg/l18 Aug 2026, 09:14: 5.95 mg/l4 Sep 2026, 08:58: 6.66 mg/l
Every result (23)
SampledResult as publishedReads as
4 Sep 2026, 08:586.66 6.66 mg/l
18 Aug 2026, 09:145.95 5.95 mg/l
3 Jul 2026, 08:376.36 6.36 mg/l
9 Jun 2026, 10:157.98 7.98 mg/l
7 May 2026, 08:407.7 7.7 mg/l
24 Apr 2026, 10:5511 11 mg/l
6 Mar 2026, 11:4911.6 11.6 mg/l
11 Feb 2026, 12:2911.1 11.1 mg/l
27 Jan 2026, 10:1211.7 11.7 mg/l
9 Dec 2025, 12:4310.1 10.1 mg/l
13 Nov 2025, 09:346.79 6.79 mg/l
8 Oct 2025, 12:458.02 8.02 mg/l
7 Apr 2025, 10:4014 14 mg/l
14 Mar 2025, 13:3213.3 13.3 mg/l
14 Feb 2025, 13:1312.9 12.9 mg/l
30 Jan 2025, 11:3912.2 12.2 mg/l
19 Dec 2024, 12:3510.7 10.7 mg/l
5 Nov 2024, 08:258.29 8.29 mg/l
3 Oct 2024, 11:059.99 9.99 mg/l
12 Sep 2024, 09:347.73 7.73 mg/l
2 Aug 2024, 10:287.19 7.19 mg/l
1 Jul 2024, 09:477.75 7.75 mg/l
13 Jun 2024, 10:599.93 9.93 mg/l

Water temperature

code 0076 · °C

17.2 °C

Sampled 4 Sep 2026, 27 days ago · 23 results banked

5101520°C20242025202613 Jun 2024, 10:59: 13 °C1 Jul 2024, 09:47: 15.4 °C2 Aug 2024, 10:28: 18.1 °C12 Sep 2024, 09:34: 11.5 °C3 Oct 2024, 11:05: 12.5 °C5 Nov 2024, 08:25: 11 °C19 Dec 2024, 12:35: 8.6 °C30 Jan 2025, 11:39: 5.5 °C14 Feb 2025, 13:13: 5.1 °C14 Mar 2025, 13:32: 6.6 °C7 Apr 2025, 10:40: 10.5 °C8 Oct 2025, 12:45: 13.2 °C13 Nov 2025, 09:34: 11.9 °C9 Dec 2025, 12:43: 10.2 °C27 Jan 2026, 10:12: 6.1 °C11 Feb 2026, 12:29: 9.3 °C6 Mar 2026, 11:49: 8.8 °C24 Apr 2026, 10:55: 11.5 °C7 May 2026, 08:40: 11 °C9 Jun 2026, 10:15: 13.5 °C3 Jul 2026, 08:37: 15.7 °C18 Aug 2026, 09:14: 16.9 °C4 Sep 2026, 08:58: 17.2 °C
Every result (23)
SampledResult as publishedReads as
4 Sep 2026, 08:5817.2 17.2 °C
18 Aug 2026, 09:1416.9 16.9 °C
3 Jul 2026, 08:3715.7 15.7 °C
9 Jun 2026, 10:1513.5 13.5 °C
7 May 2026, 08:4011 11 °C
24 Apr 2026, 10:5511.5 11.5 °C
6 Mar 2026, 11:498.8 8.8 °C
11 Feb 2026, 12:299.3 9.3 °C
27 Jan 2026, 10:126.1 6.1 °C
9 Dec 2025, 12:4310.2 10.2 °C
13 Nov 2025, 09:3411.9 11.9 °C
8 Oct 2025, 12:4513.2 13.2 °C
7 Apr 2025, 10:4010.5 10.5 °C
14 Mar 2025, 13:326.6 6.6 °C
14 Feb 2025, 13:135.1 5.1 °C
30 Jan 2025, 11:395.5 5.5 °C
19 Dec 2024, 12:358.6 8.6 °C
5 Nov 2024, 08:2511 11 °C
3 Oct 2024, 11:0512.5 12.5 °C
12 Sep 2024, 09:3411.5 11.5 °C
2 Aug 2024, 10:2818.1 18.1 °C
1 Jul 2024, 09:4715.4 15.4 °C
13 Jun 2024, 10:5913 13 °C

pH

code 0061

7.9

Sampled 4 Sep 2026, 27 days ago · 23 results banked

7.67.888.28.48.620242025202613 Jun 2024, 10:59: 8.421 Jul 2024, 09:47: 7.932 Aug 2024, 10:28: 7.812 Sep 2024, 09:34: 7.893 Oct 2024, 11:05: 7.965 Nov 2024, 08:25: 7.8519 Dec 2024, 12:35: 8.0430 Jan 2025, 11:39: 8.1314 Feb 2025, 13:13: 8.3314 Mar 2025, 13:32: 8.257 Apr 2025, 10:40: 8.228 Oct 2025, 12:45: 7.8213 Nov 2025, 09:34: 7.899 Dec 2025, 12:43: 7.8827 Jan 2026, 10:12: 8.0411 Feb 2026, 12:29: 8.126 Mar 2026, 11:49: 8.0924 Apr 2026, 10:55: 7.977 May 2026, 08:40: 7.779 Jun 2026, 10:15: 7.833 Jul 2026, 08:37: 7.9118 Aug 2026, 09:14: 7.834 Sep 2026, 08:58: 7.9
Every result (23)
SampledResult as publishedReads as
4 Sep 2026, 08:587.9 7.9
18 Aug 2026, 09:147.83 7.83
3 Jul 2026, 08:377.91 7.91
9 Jun 2026, 10:157.83 7.83
7 May 2026, 08:407.77 7.77
24 Apr 2026, 10:557.97 7.97
6 Mar 2026, 11:498.09 8.09
11 Feb 2026, 12:298.12 8.12
27 Jan 2026, 10:128.04 8.04
9 Dec 2025, 12:437.88 7.88
13 Nov 2025, 09:347.89 7.89
8 Oct 2025, 12:457.82 7.82
7 Apr 2025, 10:408.22 8.22
14 Mar 2025, 13:328.25 8.25
14 Feb 2025, 13:138.33 8.33
30 Jan 2025, 11:398.13 8.13
19 Dec 2024, 12:358.04 8.04
5 Nov 2024, 08:257.85 7.85
3 Oct 2024, 11:057.96 7.96
12 Sep 2024, 09:347.89 7.89
2 Aug 2024, 10:287.8 7.8
1 Jul 2024, 09:477.93 7.93
13 Jun 2024, 10:598.42 8.42

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 4 Sep 2026, 27 days ago · 22 results banked

0.020.040.060.080.1mg/l20242025202613 Jun 2024, 10:59: 0.031 mg/l1 Jul 2024, 09:47: 0.038 mg/l2 Aug 2024, 10:28: 0.04 mg/l12 Sep 2024, 09:34: 0.03 mg/l3 Oct 2024, 11:05: 0.042 mg/l5 Nov 2024, 08:25: below 0.03 mg/l (not detected above this)19 Dec 2024, 12:35: 0.049 mg/l30 Jan 2025, 11:39: 0.041 mg/l14 Feb 2025, 13:13: 0.04 mg/l14 Mar 2025, 13:32: below 0.03 mg/l (not detected above this)8 Oct 2025, 12:45: below 0.03 mg/l (not detected above this)13 Nov 2025, 09:34: below 0.03 mg/l (not detected above this)9 Dec 2025, 12:43: 0.088 mg/l27 Jan 2026, 10:12: 0.052 mg/l11 Feb 2026, 12:29: 0.044 mg/l6 Mar 2026, 11:49: below 0.03 mg/l (not detected above this)24 Apr 2026, 10:55: below 0.03 mg/l (not detected above this)7 May 2026, 08:40: 0.057 mg/l9 Jun 2026, 10:15: 0.066 mg/l3 Jul 2026, 08:37: 0.056 mg/l18 Aug 2026, 09:14: 0.033 mg/l4 Sep 2026, 08:58: below 0.03 mg/l (not detected above this)
Every result (22)
SampledResult as publishedReads as
4 Sep 2026, 08:58<0.03 below 0.03 mg/l (not detected above this)
18 Aug 2026, 09:140.033 0.033 mg/l
3 Jul 2026, 08:370.056 0.056 mg/l
9 Jun 2026, 10:150.066 0.066 mg/l
7 May 2026, 08:400.057 0.057 mg/l
24 Apr 2026, 10:55<0.03 below 0.03 mg/l (not detected above this)
6 Mar 2026, 11:49<0.03 below 0.03 mg/l (not detected above this)
11 Feb 2026, 12:290.044 0.044 mg/l
27 Jan 2026, 10:120.052 0.052 mg/l
9 Dec 2025, 12:430.088 0.088 mg/l
13 Nov 2025, 09:34<0.03 below 0.03 mg/l (not detected above this)
8 Oct 2025, 12:45<0.03 below 0.03 mg/l (not detected above this)
14 Mar 2025, 13:32<0.03 below 0.03 mg/l (not detected above this)
14 Feb 2025, 13:130.04 0.04 mg/l
30 Jan 2025, 11:390.041 0.041 mg/l
19 Dec 2024, 12:350.049 0.049 mg/l
5 Nov 2024, 08:25<0.03 below 0.03 mg/l (not detected above this)
3 Oct 2024, 11:050.042 0.042 mg/l
12 Sep 2024, 09:340.03 0.03 mg/l
2 Aug 2024, 10:280.04 0.04 mg/l
1 Jul 2024, 09:470.038 0.038 mg/l
13 Jun 2024, 10:590.031 0.031 mg/l

Nitrate

as nitrogen (N) · code 0117 · mg/l

2.39 mg/l

Sampled 4 Sep 2026, 27 days ago · 22 results banked

0510152025mg/l20242025202613 Jun 2024, 10:59: 4.18 mg/l1 Jul 2024, 09:47: 3.39 mg/l2 Aug 2024, 10:28: 3.59 mg/l12 Sep 2024, 09:34: 3.29 mg/l3 Oct 2024, 11:05: 13 mg/l5 Nov 2024, 08:25: 3.18 mg/l19 Dec 2024, 12:35: 7.07 mg/l30 Jan 2025, 11:39: 13 mg/l14 Feb 2025, 13:13: 9.17 mg/l14 Mar 2025, 13:32: 6.28 mg/l8 Oct 2025, 12:45: 2.39 mg/l13 Nov 2025, 09:34: 3.27 mg/l9 Dec 2025, 12:43: 21 mg/l27 Jan 2026, 10:12: 13 mg/l11 Feb 2026, 12:29: 16 mg/l6 Mar 2026, 11:49: 9.97 mg/l24 Apr 2026, 10:55: 2.78 mg/l7 May 2026, 08:40: 2.77 mg/l9 Jun 2026, 10:15: 2.68 mg/l3 Jul 2026, 08:37: 2.29 mg/l18 Aug 2026, 09:14: 2.39 mg/l4 Sep 2026, 08:58: 2.39 mg/l
Every result (22)
SampledResult as publishedReads as
4 Sep 2026, 08:582.39 2.39 mg/l
18 Aug 2026, 09:142.39 2.39 mg/l
3 Jul 2026, 08:372.29 2.29 mg/l
9 Jun 2026, 10:152.68 2.68 mg/l
7 May 2026, 08:402.77 2.77 mg/l
24 Apr 2026, 10:552.78 2.78 mg/l
6 Mar 2026, 11:499.97 9.97 mg/l
11 Feb 2026, 12:2916 16 mg/l
27 Jan 2026, 10:1213 13 mg/l
9 Dec 2025, 12:4321 21 mg/l
13 Nov 2025, 09:343.27 3.27 mg/l
8 Oct 2025, 12:452.39 2.39 mg/l
14 Mar 2025, 13:326.28 6.28 mg/l
14 Feb 2025, 13:139.17 9.17 mg/l
30 Jan 2025, 11:3913 13 mg/l
19 Dec 2024, 12:357.07 7.07 mg/l
5 Nov 2024, 08:253.18 3.18 mg/l
3 Oct 2024, 11:0513 13 mg/l
12 Sep 2024, 09:343.29 3.29 mg/l
2 Aug 2024, 10:283.59 3.59 mg/l
1 Jul 2024, 09:473.39 3.39 mg/l
13 Jun 2024, 10:594.18 4.18 mg/l

Phosphate

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

0.23 mg/l

Sampled 4 Sep 2026, 27 days ago · 22 results banked

0.050.10.150.20.25mg/l20242025202613 Jun 2024, 10:59: 0.16 mg/l1 Jul 2024, 09:47: 0.19 mg/l2 Aug 2024, 10:28: 0.19 mg/l12 Sep 2024, 09:34: 0.24 mg/l3 Oct 2024, 11:05: 0.13 mg/l5 Nov 2024, 08:25: 0.16 mg/l19 Dec 2024, 12:35: 0.12 mg/l30 Jan 2025, 11:39: 0.066 mg/l14 Feb 2025, 13:13: 0.12 mg/l14 Mar 2025, 13:32: 0.094 mg/l8 Oct 2025, 12:45: 0.24 mg/l13 Nov 2025, 09:34: 0.23 mg/l9 Dec 2025, 12:43: 0.11 mg/l27 Jan 2026, 10:12: 0.088 mg/l11 Feb 2026, 12:29: 0.075 mg/l6 Mar 2026, 11:49: 0.11 mg/l24 Apr 2026, 10:55: 0.12 mg/l7 May 2026, 08:40: 0.21 mg/l9 Jun 2026, 10:15: 0.24 mg/l3 Jul 2026, 08:37: 0.21 mg/l18 Aug 2026, 09:14: 0.21 mg/l4 Sep 2026, 08:58: 0.23 mg/l
Every result (22)
SampledResult as publishedReads as
4 Sep 2026, 08:580.23 0.23 mg/l
18 Aug 2026, 09:140.21 0.21 mg/l
3 Jul 2026, 08:370.21 0.21 mg/l
9 Jun 2026, 10:150.24 0.24 mg/l
7 May 2026, 08:400.21 0.21 mg/l
24 Apr 2026, 10:550.12 0.12 mg/l
6 Mar 2026, 11:490.11 0.11 mg/l
11 Feb 2026, 12:290.075 0.075 mg/l
27 Jan 2026, 10:120.088 0.088 mg/l
9 Dec 2025, 12:430.11 0.11 mg/l
13 Nov 2025, 09:340.23 0.23 mg/l
8 Oct 2025, 12:450.24 0.24 mg/l
14 Mar 2025, 13:320.094 0.094 mg/l
14 Feb 2025, 13:130.12 0.12 mg/l
30 Jan 2025, 11:390.066 0.066 mg/l
19 Dec 2024, 12:350.12 0.12 mg/l
5 Nov 2024, 08:250.16 0.16 mg/l
3 Oct 2024, 11:050.13 0.13 mg/l
12 Sep 2024, 09:340.24 0.24 mg/l
2 Aug 2024, 10:280.19 0.19 mg/l
1 Jul 2024, 09:470.19 0.19 mg/l
13 Jun 2024, 10:590.16 0.16 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

887 µS/cm

Sampled 4 Sep 2026, 27 days ago · 23 results banked

5007501000125015001750µS/cm20242025202613 Jun 2024, 10:59: 1715 µS/cm1 Jul 2024, 09:47: 909 µS/cm2 Aug 2024, 10:28: 927 µS/cm12 Sep 2024, 09:34: 842 µS/cm3 Oct 2024, 11:05: 767 µS/cm5 Nov 2024, 08:25: 943 µS/cm19 Dec 2024, 12:35: 901 µS/cm30 Jan 2025, 11:39: 791 µS/cm14 Feb 2025, 13:13: 887 µS/cm14 Mar 2025, 13:32: 884 µS/cm7 Apr 2025, 10:40: 874 µS/cm8 Oct 2025, 12:45: 940 µS/cm13 Nov 2025, 09:34: 978 µS/cm9 Dec 2025, 12:43: 768 µS/cm27 Jan 2026, 10:12: 752 µS/cm11 Feb 2026, 12:29: 738 µS/cm6 Mar 2026, 11:49: 843 µS/cm24 Apr 2026, 10:55: 913 µS/cm7 May 2026, 08:40: 912 µS/cm9 Jun 2026, 10:15: 883 µS/cm3 Jul 2026, 08:37: 895 µS/cm18 Aug 2026, 09:14: 903 µS/cm4 Sep 2026, 08:58: 887 µS/cm
Every result (23)
SampledResult as publishedReads as
4 Sep 2026, 08:58887 887 µS/cm
18 Aug 2026, 09:14903 903 µS/cm
3 Jul 2026, 08:37895 895 µS/cm
9 Jun 2026, 10:15883 883 µS/cm
7 May 2026, 08:40912 912 µS/cm
24 Apr 2026, 10:55913 913 µS/cm
6 Mar 2026, 11:49843 843 µS/cm
11 Feb 2026, 12:29738 738 µS/cm
27 Jan 2026, 10:12752 752 µS/cm
9 Dec 2025, 12:43768 768 µS/cm
13 Nov 2025, 09:34978 978 µS/cm
8 Oct 2025, 12:45940 940 µS/cm
7 Apr 2025, 10:40874 874 µS/cm
14 Mar 2025, 13:32884 884 µS/cm
14 Feb 2025, 13:13887 887 µS/cm
30 Jan 2025, 11:39791 791 µS/cm
19 Dec 2024, 12:35901 901 µS/cm
5 Nov 2024, 08:25943 943 µS/cm
3 Oct 2024, 11:05767 767 µS/cm
12 Sep 2024, 09:34842 842 µS/cm
2 Aug 2024, 10:28927 927 µS/cm
1 Jul 2024, 09:47909 909 µS/cm
13 Jun 2024, 10:591715 1715 µS/cm

Everything measured here

12 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 12 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 23 Jun 2024 – Sep 2026 69.4% 4 Sep 2026
Oxygen, Dissolved as O2 9924 River water 23 Jun 2024 – Sep 2026 6.66 mg/l 4 Sep 2026
Temperature of Water 0076 River water 23 Jun 2024 – Sep 2026 17.2 °C 4 Sep 2026
pH 0061 River water 23 Jun 2024 – Sep 2026 7.9 4 Sep 2026
Ammoniacal Nitrogen as N 0111 River water 22 Jun 2024 – Sep 2026 below 0.03 mg/l 4 Sep 2026
Nitrate as N 0117 River water 22 Jun 2024 – Sep 2026 2.39 mg/l 4 Sep 2026
Orthophosphate, reactive as P 0180 River water 22 Jun 2024 – Sep 2026 0.23 mg/l 4 Sep 2026
Conductivity at 25 C 0077 River water 23 Jun 2024 – Sep 2026 887 µS/cm 4 Sep 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 22 Jun 2024 – Sep 2026 310 mg/l 4 Sep 2026
Ammonia un-ionised as N 0119 River water 22 Jun 2024 – Sep 2026 below 0.00074 mg/l 4 Sep 2026
Nitrite as N 0118 River water 22 Jun 2024 – Sep 2026 0.01 mg/l 4 Sep 2026
Nitrogen, Total Oxidised as N 0116 River water 22 Jun 2024 – Sep 2026 2.4 mg/l 4 Sep 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.