Newmill Beck 1.7 KMS upstream of River Calder

EA name: NEWMILL BECK 1.7 KMS U/S OF RIVER CALDER
Environment Agency sampling point NW-88005124 · 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
27 May 2026, 13:324 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 28 Jun 2024 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 303707, 502675As published, to the nearest 1 m. Open in a map
River, by its own name
Newmill Beck 1 7 Kms
River, by the map
Newmill BeckPlaced on a river whose name partly matches its own, 2 m from the line.
Next gauge downstream
None tracedIts water reaches the sea without passing a gauge.
Why it was sampled
Monitoring (national agency policy) (23 samples)

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

100.3%

Sampled 27 May 2026, 4 months ago · 23 results banked

859095100105110%20242025202628 Jun 2024, 10:48: 96.4%22 Jul 2024, 13:07: 95.6%29 Aug 2024, 10:44: 94.1%18 Sep 2024, 11:32: 98.4%21 Oct 2024, 09:17: 89.2%21 Nov 2024, 10:19: 89.9%9 Dec 2024, 10:43: 98%7 Feb 2025, 12:41: 100.3%3 Mar 2025, 13:16: 99.8%22 Apr 2025, 11:58: 107.2%14 May 2025, 11:30: 105%27 Jun 2025, 11:39: 93.7%10 Jul 2025, 13:02: 97.7%29 Aug 2025, 12:55: 102.6%23 Sep 2025, 10:21: 97.5%23 Oct 2025, 13:17: 99%25 Nov 2025, 12:46: 96.9%16 Dec 2025, 10:17: 95.1%9 Jan 2026, 14:49: 99.1%24 Feb 2026, 13:11: 95.9%18 Mar 2026, 11:01: 100.3%9 Apr 2026, 12:03: 98.3%27 May 2026, 13:32: 100.3%
Every result (23)
SampledResult as publishedReads as
27 May 2026, 13:32100.3 100.3%
9 Apr 2026, 12:0398.3 98.3%
18 Mar 2026, 11:01100.3 100.3%
24 Feb 2026, 13:1195.9 95.9%
9 Jan 2026, 14:4999.1 99.1%
16 Dec 2025, 10:1795.1 95.1%
25 Nov 2025, 12:4696.9 96.9%
23 Oct 2025, 13:1799 99%
23 Sep 2025, 10:2197.5 97.5%
29 Aug 2025, 12:55102.6 102.6%
10 Jul 2025, 13:0297.7 97.7%
27 Jun 2025, 11:3993.7 93.7%
14 May 2025, 11:30105 105%
22 Apr 2025, 11:58107.2 107.2%
3 Mar 2025, 13:1699.8 99.8%
7 Feb 2025, 12:41100.3 100.3%
9 Dec 2024, 10:4398 98%
21 Nov 2024, 10:1989.9 89.9%
21 Oct 2024, 09:1789.2 89.2%
18 Sep 2024, 11:3298.4 98.4%
29 Aug 2024, 10:4494.1 94.1%
22 Jul 2024, 13:0795.6 95.6%
28 Jun 2024, 10:4896.4 96.4%

Dissolved oxygen

as O2 · code 9924 · mg/l

9.49 mg/l

Sampled 27 May 2026, 4 months ago · 23 results banked

910111213mg/l20242025202628 Jun 2024, 10:48: 9.59 mg/l22 Jul 2024, 13:07: 9.66 mg/l29 Aug 2024, 10:44: 9.53 mg/l18 Sep 2024, 11:32: 10.3 mg/l21 Oct 2024, 09:17: 9.72 mg/l21 Nov 2024, 10:19: 12 mg/l9 Dec 2024, 10:43: 12.1 mg/l7 Feb 2025, 12:41: 13 mg/l3 Mar 2025, 13:16: 11.8 mg/l22 Apr 2025, 11:58: 11.6 mg/l14 May 2025, 11:30: 10.8 mg/l27 Jun 2025, 11:39: 9.36 mg/l10 Jul 2025, 13:02: 9.15 mg/l29 Aug 2025, 12:55: 10.1 mg/l23 Sep 2025, 10:21: 10.9 mg/l23 Oct 2025, 13:17: 11.1 mg/l25 Nov 2025, 12:46: 11.9 mg/l16 Dec 2025, 10:17: 11.4 mg/l9 Jan 2026, 14:49: 13 mg/l24 Feb 2026, 13:11: 11.2 mg/l18 Mar 2026, 11:01: 11.3 mg/l9 Apr 2026, 12:03: 10.9 mg/l27 May 2026, 13:32: 9.49 mg/l
Every result (23)
SampledResult as publishedReads as
27 May 2026, 13:329.49 9.49 mg/l
9 Apr 2026, 12:0310.9 10.9 mg/l
18 Mar 2026, 11:0111.3 11.3 mg/l
24 Feb 2026, 13:1111.2 11.2 mg/l
9 Jan 2026, 14:4913 13 mg/l
16 Dec 2025, 10:1711.4 11.4 mg/l
25 Nov 2025, 12:4611.9 11.9 mg/l
23 Oct 2025, 13:1711.1 11.1 mg/l
23 Sep 2025, 10:2110.9 10.9 mg/l
29 Aug 2025, 12:5510.1 10.1 mg/l
10 Jul 2025, 13:029.15 9.15 mg/l
27 Jun 2025, 11:399.36 9.36 mg/l
14 May 2025, 11:3010.8 10.8 mg/l
22 Apr 2025, 11:5811.6 11.6 mg/l
3 Mar 2025, 13:1611.8 11.8 mg/l
7 Feb 2025, 12:4113 13 mg/l
9 Dec 2024, 10:4312.1 12.1 mg/l
21 Nov 2024, 10:1912 12 mg/l
21 Oct 2024, 09:179.72 9.72 mg/l
18 Sep 2024, 11:3210.3 10.3 mg/l
29 Aug 2024, 10:449.53 9.53 mg/l
22 Jul 2024, 13:079.66 9.66 mg/l
28 Jun 2024, 10:489.59 9.59 mg/l

Water temperature

code 0076 · °C

17.9 °C

Sampled 27 May 2026, 4 months ago · 23 results banked

05101520°C20242025202628 Jun 2024, 10:48: 15.5 °C22 Jul 2024, 13:07: 14.8 °C29 Aug 2024, 10:44: 14.7 °C18 Sep 2024, 11:32: 13.2 °C21 Oct 2024, 09:17: 11.4 °C21 Nov 2024, 10:19: 3.4 °C9 Dec 2024, 10:43: 6.2 °C7 Feb 2025, 12:41: 4.5 °C3 Mar 2025, 13:16: 8 °C22 Apr 2025, 11:58: 11.8 °C14 May 2025, 11:30: 14 °C27 Jun 2025, 11:39: 15.3 °C10 Jul 2025, 13:02: 18.4 °C29 Aug 2025, 12:55: 16.2 °C23 Sep 2025, 10:21: 10.5 °C23 Oct 2025, 13:17: 10.1 °C25 Nov 2025, 12:46: 6.6 °C16 Dec 2025, 10:17: 7.6 °C9 Jan 2026, 14:49: 3.9 °C24 Feb 2026, 13:11: 8.5 °C18 Mar 2026, 11:01: 9.9 °C9 Apr 2026, 12:03: 10.5 °C27 May 2026, 13:32: 17.9 °C
Every result (23)
SampledResult as publishedReads as
27 May 2026, 13:3217.9 17.9 °C
9 Apr 2026, 12:0310.5 10.5 °C
18 Mar 2026, 11:019.9 9.9 °C
24 Feb 2026, 13:118.5 8.5 °C
9 Jan 2026, 14:493.9 3.9 °C
16 Dec 2025, 10:177.6 7.6 °C
25 Nov 2025, 12:466.6 6.6 °C
23 Oct 2025, 13:1710.1 10.1 °C
23 Sep 2025, 10:2110.5 10.5 °C
29 Aug 2025, 12:5516.2 16.2 °C
10 Jul 2025, 13:0218.4 18.4 °C
27 Jun 2025, 11:3915.3 15.3 °C
14 May 2025, 11:3014 14 °C
22 Apr 2025, 11:5811.8 11.8 °C
3 Mar 2025, 13:168 8 °C
7 Feb 2025, 12:414.5 4.5 °C
9 Dec 2024, 10:436.2 6.2 °C
21 Nov 2024, 10:193.4 3.4 °C
21 Oct 2024, 09:1711.4 11.4 °C
18 Sep 2024, 11:3213.2 13.2 °C
29 Aug 2024, 10:4414.7 14.7 °C
22 Jul 2024, 13:0714.8 14.8 °C
28 Jun 2024, 10:4815.5 15.5 °C

pH

code 0061

7.77

Sampled 27 May 2026, 4 months ago · 23 results banked

6.577.5820242025202628 Jun 2024, 10:48: 7.522 Jul 2024, 13:07: 7.7529 Aug 2024, 10:44: 6.918 Sep 2024, 11:32: 7.7621 Oct 2024, 09:17: 7.0521 Nov 2024, 10:19: 7.099 Dec 2024, 10:43: 7.17 Feb 2025, 12:41: 7.333 Mar 2025, 13:16: 7.6722 Apr 2025, 11:58: 7.9714 May 2025, 11:30: 7.5827 Jun 2025, 11:39: 7.6110 Jul 2025, 13:02: 7.6329 Aug 2025, 12:55: 7.6223 Sep 2025, 10:21: 7.6423 Oct 2025, 13:17: 7.8725 Nov 2025, 12:46: 7.4916 Dec 2025, 10:17: 7.279 Jan 2026, 14:49: 7.5624 Feb 2026, 13:11: 7.4218 Mar 2026, 11:01: 7.619 Apr 2026, 12:03: 7.6227 May 2026, 13:32: 7.77
Every result (23)
SampledResult as publishedReads as
27 May 2026, 13:327.77 7.77
9 Apr 2026, 12:037.62 7.62
18 Mar 2026, 11:017.61 7.61
24 Feb 2026, 13:117.42 7.42
9 Jan 2026, 14:497.56 7.56
16 Dec 2025, 10:177.27 7.27
25 Nov 2025, 12:467.49 7.49
23 Oct 2025, 13:177.87 7.87
23 Sep 2025, 10:217.64 7.64
29 Aug 2025, 12:557.62 7.62
10 Jul 2025, 13:027.63 7.63
27 Jun 2025, 11:397.61 7.61
14 May 2025, 11:307.58 7.58
22 Apr 2025, 11:587.97 7.97
3 Mar 2025, 13:167.67 7.67
7 Feb 2025, 12:417.33 7.33
9 Dec 2024, 10:437.1 7.1
21 Nov 2024, 10:197.09 7.09
21 Oct 2024, 09:177.05 7.05
18 Sep 2024, 11:327.76 7.76
29 Aug 2024, 10:446.9 6.9
22 Jul 2024, 13:077.75 7.75
28 Jun 2024, 10:487.5 7.5

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 27 May 2026, 4 months ago · 22 results banked

00.511.5mg/l20242025202628 Jun 2024, 10:48: 0.053 mg/l22 Jul 2024, 13:07: below 0.03 mg/l (not detected above this)29 Aug 2024, 10:44: 0.087 mg/l18 Sep 2024, 11:32: below 0.03 mg/l (not detected above this)21 Oct 2024, 09:17: 0.093 mg/l9 Dec 2024, 10:43: 0.2 mg/l7 Feb 2025, 12:41: 0.21 mg/l3 Mar 2025, 13:16: 0.041 mg/l22 Apr 2025, 11:58: below 0.03 mg/l (not detected above this)14 May 2025, 11:30: below 0.03 mg/l (not detected above this)27 Jun 2025, 11:39: 0.032 mg/l10 Jul 2025, 13:02: below 0.03 mg/l (not detected above this)29 Aug 2025, 12:55: below 0.03 mg/l (not detected above this)23 Sep 2025, 10:21: 0.076 mg/l23 Oct 2025, 13:17: below 0.03 mg/l (not detected above this)25 Nov 2025, 12:46: 0.38 mg/l16 Dec 2025, 10:17: 0.76 mg/l9 Jan 2026, 14:49: 0.098 mg/l24 Feb 2026, 13:11: 1.2 mg/l18 Mar 2026, 11:01: 0.17 mg/l9 Apr 2026, 12:03: 0.096 mg/l27 May 2026, 13:32: below 0.03 mg/l (not detected above this)
Every result (22)
SampledResult as publishedReads as
27 May 2026, 13:32<0.03 below 0.03 mg/l (not detected above this)
9 Apr 2026, 12:030.096 0.096 mg/l
18 Mar 2026, 11:010.17 0.17 mg/l
24 Feb 2026, 13:111.2 1.2 mg/l
9 Jan 2026, 14:490.098 0.098 mg/l
16 Dec 2025, 10:170.76 0.76 mg/l
25 Nov 2025, 12:460.38 0.38 mg/l
23 Oct 2025, 13:17<0.03 below 0.03 mg/l (not detected above this)
23 Sep 2025, 10:210.076 0.076 mg/l
29 Aug 2025, 12:55<0.03 below 0.03 mg/l (not detected above this)
10 Jul 2025, 13:02<0.03 below 0.03 mg/l (not detected above this)
27 Jun 2025, 11:390.032 0.032 mg/l
14 May 2025, 11:30<0.03 below 0.03 mg/l (not detected above this)
22 Apr 2025, 11:58<0.03 below 0.03 mg/l (not detected above this)
3 Mar 2025, 13:160.041 0.041 mg/l
7 Feb 2025, 12:410.21 0.21 mg/l
9 Dec 2024, 10:430.2 0.2 mg/l
21 Oct 2024, 09:170.093 0.093 mg/l
18 Sep 2024, 11:32<0.03 below 0.03 mg/l (not detected above this)
29 Aug 2024, 10:440.087 0.087 mg/l
22 Jul 2024, 13:07<0.03 below 0.03 mg/l (not detected above this)
28 Jun 2024, 10:480.053 0.053 mg/l

Nitrate

as nitrogen (N) · code 0117 · mg/l

2.19 mg/l

Sampled 27 May 2026, 4 months ago · 22 results banked

12345mg/l20242025202628 Jun 2024, 10:48: 1.35 mg/l22 Jul 2024, 13:07: 2.09 mg/l29 Aug 2024, 10:44: 1.78 mg/l18 Sep 2024, 11:32: 2.49 mg/l21 Oct 2024, 09:17: 1.68 mg/l9 Dec 2024, 10:43: 2.57 mg/l7 Feb 2025, 12:41: 3.26 mg/l3 Mar 2025, 13:16: 3.37 mg/l22 Apr 2025, 11:58: 2.69 mg/l14 May 2025, 11:30: 2.09 mg/l27 Jun 2025, 11:39: 1.18 mg/l10 Jul 2025, 13:02: 1.49 mg/l29 Aug 2025, 12:55: 1.3 mg/l23 Sep 2025, 10:21: 1.68 mg/l23 Oct 2025, 13:17: 2.79 mg/l25 Nov 2025, 12:46: 2.64 mg/l16 Dec 2025, 10:17: 2.34 mg/l9 Jan 2026, 14:49: 4.47 mg/l24 Feb 2026, 13:11: 2.44 mg/l18 Mar 2026, 11:01: 3.23 mg/l9 Apr 2026, 12:03: 3.91 mg/l27 May 2026, 13:32: 2.19 mg/l
Every result (22)
SampledResult as publishedReads as
27 May 2026, 13:322.19 2.19 mg/l
9 Apr 2026, 12:033.91 3.91 mg/l
18 Mar 2026, 11:013.23 3.23 mg/l
24 Feb 2026, 13:112.44 2.44 mg/l
9 Jan 2026, 14:494.47 4.47 mg/l
16 Dec 2025, 10:172.34 2.34 mg/l
25 Nov 2025, 12:462.64 2.64 mg/l
23 Oct 2025, 13:172.79 2.79 mg/l
23 Sep 2025, 10:211.68 1.68 mg/l
29 Aug 2025, 12:551.3 1.3 mg/l
10 Jul 2025, 13:021.49 1.49 mg/l
27 Jun 2025, 11:391.18 1.18 mg/l
14 May 2025, 11:302.09 2.09 mg/l
22 Apr 2025, 11:582.69 2.69 mg/l
3 Mar 2025, 13:163.37 3.37 mg/l
7 Feb 2025, 12:413.26 3.26 mg/l
9 Dec 2024, 10:432.57 2.57 mg/l
21 Oct 2024, 09:171.68 1.68 mg/l
18 Sep 2024, 11:322.49 2.49 mg/l
29 Aug 2024, 10:441.78 1.78 mg/l
22 Jul 2024, 13:072.09 2.09 mg/l
28 Jun 2024, 10:481.35 1.35 mg/l

Phosphate

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

0.044 mg/l

Sampled 27 May 2026, 4 months ago · 22 results banked

00.050.10.150.20.25mg/l20242025202628 Jun 2024, 10:48: 0.066 mg/l22 Jul 2024, 13:07: 0.1 mg/l29 Aug 2024, 10:44: 0.081 mg/l18 Sep 2024, 11:32: 0.1 mg/l21 Oct 2024, 09:17: 0.096 mg/l9 Dec 2024, 10:43: 0.079 mg/l7 Feb 2025, 12:41: 0.18 mg/l3 Mar 2025, 13:16: 0.096 mg/l22 Apr 2025, 11:58: 0.021 mg/l14 May 2025, 11:30: 0.044 mg/l27 Jun 2025, 11:39: 0.12 mg/l10 Jul 2025, 13:02: 0.12 mg/l29 Aug 2025, 12:55: 0.067 mg/l23 Sep 2025, 10:21: 0.12 mg/l23 Oct 2025, 13:17: 0.048 mg/l25 Nov 2025, 12:46: 0.11 mg/l16 Dec 2025, 10:17: 0.21 mg/l9 Jan 2026, 14:49: 0.059 mg/l24 Feb 2026, 13:11: 0.13 mg/l18 Mar 2026, 11:01: 0.087 mg/l9 Apr 2026, 12:03: 0.085 mg/l27 May 2026, 13:32: 0.044 mg/l
Every result (22)
SampledResult as publishedReads as
27 May 2026, 13:320.044 0.044 mg/l
9 Apr 2026, 12:030.085 0.085 mg/l
18 Mar 2026, 11:010.087 0.087 mg/l
24 Feb 2026, 13:110.13 0.13 mg/l
9 Jan 2026, 14:490.059 0.059 mg/l
16 Dec 2025, 10:170.21 0.21 mg/l
25 Nov 2025, 12:460.11 0.11 mg/l
23 Oct 2025, 13:170.048 0.048 mg/l
23 Sep 2025, 10:210.12 0.12 mg/l
29 Aug 2025, 12:550.067 0.067 mg/l
10 Jul 2025, 13:020.12 0.12 mg/l
27 Jun 2025, 11:390.12 0.12 mg/l
14 May 2025, 11:300.044 0.044 mg/l
22 Apr 2025, 11:580.021 0.021 mg/l
3 Mar 2025, 13:160.096 0.096 mg/l
7 Feb 2025, 12:410.18 0.18 mg/l
9 Dec 2024, 10:430.079 0.079 mg/l
21 Oct 2024, 09:170.096 0.096 mg/l
18 Sep 2024, 11:320.1 0.1 mg/l
29 Aug 2024, 10:440.081 0.081 mg/l
22 Jul 2024, 13:070.1 0.1 mg/l
28 Jun 2024, 10:480.066 0.066 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

215 µS/cm

Sampled 27 May 2026, 4 months ago · 23 results banked

175200225250275µS/cm20242025202628 Jun 2024, 10:48: 241 µS/cm22 Jul 2024, 13:07: 232 µS/cm29 Aug 2024, 10:44: 210 µS/cm18 Sep 2024, 11:32: 179 µS/cm21 Oct 2024, 09:17: 226 µS/cm21 Nov 2024, 10:19: 242 µS/cm9 Dec 2024, 10:43: 214 µS/cm7 Feb 2025, 12:41: 231 µS/cm3 Mar 2025, 13:16: 209 µS/cm22 Apr 2025, 11:58: 226 µS/cm14 May 2025, 11:30: 229 µS/cm27 Jun 2025, 11:39: 204 µS/cm10 Jul 2025, 13:02: 203 µS/cm29 Aug 2025, 12:55: 266 µS/cm23 Sep 2025, 10:21: 204 µS/cm23 Oct 2025, 13:17: 200 µS/cm25 Nov 2025, 12:46: 198 µS/cm16 Dec 2025, 10:17: 196 µS/cm9 Jan 2026, 14:49: 224 µS/cm24 Feb 2026, 13:11: 207 µS/cm18 Mar 2026, 11:01: 204 µS/cm9 Apr 2026, 12:03: 241 µS/cm27 May 2026, 13:32: 215 µS/cm
Every result (23)
SampledResult as publishedReads as
27 May 2026, 13:32215 215 µS/cm
9 Apr 2026, 12:03241 241 µS/cm
18 Mar 2026, 11:01204 204 µS/cm
24 Feb 2026, 13:11207 207 µS/cm
9 Jan 2026, 14:49224 224 µS/cm
16 Dec 2025, 10:17196 196 µS/cm
25 Nov 2025, 12:46198 198 µS/cm
23 Oct 2025, 13:17200 200 µS/cm
23 Sep 2025, 10:21204 204 µS/cm
29 Aug 2025, 12:55266 266 µS/cm
10 Jul 2025, 13:02203 203 µS/cm
27 Jun 2025, 11:39204 204 µS/cm
14 May 2025, 11:30229 229 µS/cm
22 Apr 2025, 11:58226 226 µS/cm
3 Mar 2025, 13:16209 209 µS/cm
7 Feb 2025, 12:41231 231 µS/cm
9 Dec 2024, 10:43214 214 µS/cm
21 Nov 2024, 10:19242 242 µS/cm
21 Oct 2024, 09:17226 226 µS/cm
18 Sep 2024, 11:32179 179 µS/cm
29 Aug 2024, 10:44210 210 µS/cm
22 Jul 2024, 13:07232 232 µS/cm
28 Jun 2024, 10:48241 241 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 Jun 2024 – May 2026 100.3% 27 May 2026
Oxygen, Dissolved as O2 9924 River water 23 Jun 2024 – May 2026 9.49 mg/l 27 May 2026
Temperature of Water 0076 River water 23 Jun 2024 – May 2026 17.9 °C 27 May 2026
pH 0061 River water 23 Jun 2024 – May 2026 7.77 27 May 2026
Ammoniacal Nitrogen as N 0111 River water 22 Jun 2024 – May 2026 below 0.03 mg/l 27 May 2026
Nitrate as N 0117 River water 22 Jun 2024 – May 2026 2.19 mg/l 27 May 2026
Orthophosphate, reactive as P 0180 River water 22 Jun 2024 – May 2026 0.044 mg/l 27 May 2026
Conductivity at 25 C 0077 River water 23 Jun 2024 – May 2026 215 µS/cm 27 May 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 22 Jun 2024 – May 2026 42 mg/l 27 May 2026
Ammonia un-ionised as N 0119 River water 22 Jun 2024 – May 2026 below 0.00058 mg/l 27 May 2026
BOD : 5 Day ATU 0085 River water 22 Jun 2024 – May 2026 1.3 mg/l 27 May 2026
Nitrite as N 0118 River water 22 Jun 2024 – May 2026 0.0075 mg/l 27 May 2026
Nitrogen, Total Oxidised as N 0116 River water 22 Jun 2024 – May 2026 2.2 mg/l 27 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.