Smallhope Burn downstream of Knitsley sewage treatment works

EA name: SMALLHOPE BURN D/S KNITSLEY STW
Environment Agency sampling point NE-44400142 · 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
5 May 2026, 12:135 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
24 since 30 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 413578, 548006As published, to the nearest 1 m. Open in a map
River, by its own name
Smallhope Burn
River, by the map
Smallhope BurnPlaced on the river its name gives, 0 m from the line.
Next gauge downstream
Lanchester Front Street On the Smallhope Burn · 3.4 km along the river
Why it was sampled
Monitoring (national agency policy) (24 samples)

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

98.9%

Sampled 5 May 2026, 5 months ago · 24 results banked

859095100105%20242025202630 Oct 2023, 11:31: 100.9%24 Nov 2023, 10:37: 95%6 Dec 2023, 12:04: 95.3%15 Jan 2024, 11:23: 98.7%19 Feb 2024, 10:24: 97.8%20 Mar 2024, 06:51: 95.5%16 Apr 2024, 11:01: 102.6%13 May 2024, 10:23: 101.7%17 Jun 2024, 11:38: 99.5%19 Jul 2024, 08:32: 99.8%21 Aug 2024, 09:31: 85.4%16 Sep 2024, 13:10: 90.4%17 Oct 2024, 10:28: 94.9%18 Nov 2024, 10:39: 95.4%3 Dec 2024, 09:21: 98.1%20 Jan 2025, 13:50: 96.6%3 Feb 2025, 11:24: 98.8%4 Mar 2025, 11:41: 96.4%9 Dec 2025, 11:46: 97.5%7 Jan 2026, 11:02: 96.1%2 Feb 2026, 13:42: 98.3%2 Mar 2026, 08:59: 92%1 Apr 2026, 12:20: 102.1%5 May 2026, 12:13: 98.9%
Every result (24)
SampledResult as publishedReads as
5 May 2026, 12:1398.9 98.9%
1 Apr 2026, 12:20102.1 102.1%
2 Mar 2026, 08:5992 92%
2 Feb 2026, 13:4298.3 98.3%
7 Jan 2026, 11:0296.1 96.1%
9 Dec 2025, 11:4697.5 97.5%
4 Mar 2025, 11:4196.4 96.4%
3 Feb 2025, 11:2498.8 98.8%
20 Jan 2025, 13:5096.6 96.6%
3 Dec 2024, 09:2198.1 98.1%
18 Nov 2024, 10:3995.4 95.4%
17 Oct 2024, 10:2894.9 94.9%
16 Sep 2024, 13:1090.4 90.4%
21 Aug 2024, 09:3185.4 85.4%
19 Jul 2024, 08:3299.8 99.8%
17 Jun 2024, 11:3899.5 99.5%
13 May 2024, 10:23101.7 101.7%
16 Apr 2024, 11:01102.6 102.6%
20 Mar 2024, 06:5195.5 95.5%
19 Feb 2024, 10:2497.8 97.8%
15 Jan 2024, 11:2398.7 98.7%
6 Dec 2023, 12:0495.3 95.3%
24 Nov 2023, 10:3795 95%
30 Oct 2023, 11:31100.9 100.9%

Dissolved oxygen

as O2 · code 9924 · mg/l

11 mg/l

Sampled 5 May 2026, 5 months ago · 24 results banked

8101214mg/l20242025202630 Oct 2023, 11:31: 11.4 mg/l24 Nov 2023, 10:37: 11.4 mg/l6 Dec 2023, 12:04: 12 mg/l15 Jan 2024, 11:23: 13.4 mg/l19 Feb 2024, 10:24: 11.6 mg/l20 Mar 2024, 06:51: 11.1 mg/l16 Apr 2024, 11:01: 11.9 mg/l13 May 2024, 10:23: 10.2 mg/l17 Jun 2024, 11:38: 10.2 mg/l19 Jul 2024, 08:32: 9.87 mg/l21 Aug 2024, 09:31: 9.02 mg/l16 Sep 2024, 13:10: 9.61 mg/l17 Oct 2024, 10:28: 10.5 mg/l18 Nov 2024, 10:39: 12.5 mg/l3 Dec 2024, 09:21: 12.8 mg/l20 Jan 2025, 13:50: 12.4 mg/l3 Feb 2025, 11:24: 12.5 mg/l4 Mar 2025, 11:41: 11.6 mg/l9 Dec 2025, 11:46: 11.4 mg/l7 Jan 2026, 11:02: 13.1 mg/l2 Feb 2026, 13:42: 12.1 mg/l2 Mar 2026, 08:59: 11 mg/l1 Apr 2026, 12:20: 11.4 mg/l5 May 2026, 12:13: 11 mg/l
Every result (24)
SampledResult as publishedReads as
5 May 2026, 12:1311 11 mg/l
1 Apr 2026, 12:2011.4 11.4 mg/l
2 Mar 2026, 08:5911 11 mg/l
2 Feb 2026, 13:4212.1 12.1 mg/l
7 Jan 2026, 11:0213.1 13.1 mg/l
9 Dec 2025, 11:4611.4 11.4 mg/l
4 Mar 2025, 11:4111.6 11.6 mg/l
3 Feb 2025, 11:2412.5 12.5 mg/l
20 Jan 2025, 13:5012.4 12.4 mg/l
3 Dec 2024, 09:2112.8 12.8 mg/l
18 Nov 2024, 10:3912.5 12.5 mg/l
17 Oct 2024, 10:2810.5 10.5 mg/l
16 Sep 2024, 13:109.61 9.61 mg/l
21 Aug 2024, 09:319.02 9.02 mg/l
19 Jul 2024, 08:329.87 9.87 mg/l
17 Jun 2024, 11:3810.2 10.2 mg/l
13 May 2024, 10:2310.2 10.2 mg/l
16 Apr 2024, 11:0111.9 11.9 mg/l
20 Mar 2024, 06:5111.1 11.1 mg/l
19 Feb 2024, 10:2411.6 11.6 mg/l
15 Jan 2024, 11:2313.4 13.4 mg/l
6 Dec 2023, 12:0412 12 mg/l
24 Nov 2023, 10:3711.4 11.4 mg/l
30 Oct 2023, 11:3111.4 11.4 mg/l

Water temperature

code 0076 · °C

10.7 °C

Sampled 5 May 2026, 5 months ago · 24 results banked

05101520°C20242025202630 Oct 2023, 11:31: 9.8 °C24 Nov 2023, 10:37: 7.5 °C6 Dec 2023, 12:04: 5.4 °C15 Jan 2024, 11:23: 2.6 °C19 Feb 2024, 10:24: 8 °C20 Mar 2024, 06:51: 8.6 °C16 Apr 2024, 11:01: 8.8 °C13 May 2024, 10:23: 15.3 °C17 Jun 2024, 11:38: 14 °C19 Jul 2024, 08:32: 15.8 °C21 Aug 2024, 09:31: 12.8 °C16 Sep 2024, 13:10: 12.5 °C17 Oct 2024, 10:28: 10.8 °C18 Nov 2024, 10:39: 3.9 °C3 Dec 2024, 09:21: 4.2 °C20 Jan 2025, 13:50: 4.6 °C3 Feb 2025, 11:24: 5.4 °C4 Mar 2025, 11:41: 7.2 °C9 Dec 2025, 11:46: 8.4 °C7 Jan 2026, 11:02: 2.5 °C2 Feb 2026, 13:42: 6.3 °C2 Mar 2026, 08:59: 7.6 °C1 Apr 2026, 12:20: 10.4 °C5 May 2026, 12:13: 10.7 °C
Every result (24)
SampledResult as publishedReads as
5 May 2026, 12:1310.7 10.7 °C
1 Apr 2026, 12:2010.4 10.4 °C
2 Mar 2026, 08:597.6 7.6 °C
2 Feb 2026, 13:426.3 6.3 °C
7 Jan 2026, 11:022.5 2.5 °C
9 Dec 2025, 11:468.4 8.4 °C
4 Mar 2025, 11:417.2 7.2 °C
3 Feb 2025, 11:245.4 5.4 °C
20 Jan 2025, 13:504.6 4.6 °C
3 Dec 2024, 09:214.2 4.2 °C
18 Nov 2024, 10:393.9 3.9 °C
17 Oct 2024, 10:2810.8 10.8 °C
16 Sep 2024, 13:1012.5 12.5 °C
21 Aug 2024, 09:3112.8 12.8 °C
19 Jul 2024, 08:3215.8 15.8 °C
17 Jun 2024, 11:3814 14 °C
13 May 2024, 10:2315.3 15.3 °C
16 Apr 2024, 11:018.8 8.8 °C
20 Mar 2024, 06:518.6 8.6 °C
19 Feb 2024, 10:248 8 °C
15 Jan 2024, 11:232.6 2.6 °C
6 Dec 2023, 12:045.4 5.4 °C
24 Nov 2023, 10:377.5 7.5 °C
30 Oct 2023, 11:319.8 9.8 °C

pH

code 0061

7.85

Sampled 5 May 2026, 5 months ago · 24 results banked

7.47.67.888.220242025202630 Oct 2023, 11:31: 7.5224 Nov 2023, 10:37: 7.536 Dec 2023, 12:04: 7.6115 Jan 2024, 11:23: 7.8119 Feb 2024, 10:24: 7.5820 Mar 2024, 06:51: 7.6416 Apr 2024, 11:01: 7.6813 May 2024, 10:23: 7.9117 Jun 2024, 11:38: 8.1119 Jul 2024, 08:32: 7.9321 Aug 2024, 09:31: 7.5716 Sep 2024, 13:10: 7.6217 Oct 2024, 10:28: 7.518 Nov 2024, 10:39: 7.823 Dec 2024, 09:21: 7.8220 Jan 2025, 13:50: 7.523 Feb 2025, 11:24: 7.554 Mar 2025, 11:41: 7.669 Dec 2025, 11:46: 7.677 Jan 2026, 11:02: 8.072 Feb 2026, 13:42: 7.832 Mar 2026, 08:59: 7.621 Apr 2026, 12:20: 7.845 May 2026, 12:13: 7.85
Every result (24)
SampledResult as publishedReads as
5 May 2026, 12:137.85 7.85
1 Apr 2026, 12:207.84 7.84
2 Mar 2026, 08:597.62 7.62
2 Feb 2026, 13:427.83 7.83
7 Jan 2026, 11:028.07 8.07
9 Dec 2025, 11:467.67 7.67
4 Mar 2025, 11:417.66 7.66
3 Feb 2025, 11:247.55 7.55
20 Jan 2025, 13:507.52 7.52
3 Dec 2024, 09:217.82 7.82
18 Nov 2024, 10:397.82 7.82
17 Oct 2024, 10:287.5 7.5
16 Sep 2024, 13:107.62 7.62
21 Aug 2024, 09:317.57 7.57
19 Jul 2024, 08:327.93 7.93
17 Jun 2024, 11:388.11 8.11
13 May 2024, 10:237.91 7.91
16 Apr 2024, 11:017.68 7.68
20 Mar 2024, 06:517.64 7.64
19 Feb 2024, 10:247.58 7.58
15 Jan 2024, 11:237.81 7.81
6 Dec 2023, 12:047.61 7.61
24 Nov 2023, 10:377.53 7.53
30 Oct 2023, 11:317.52 7.52

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

1.1 mg/l

Sampled 5 May 2026, 5 months ago · 24 results banked

0123mg/l20242025202630 Oct 2023, 11:31: 0.034 mg/l24 Nov 2023, 10:37: 0.068 mg/l6 Dec 2023, 12:04: 0.071 mg/l15 Jan 2024, 11:23: 0.2 mg/l19 Feb 2024, 10:24: 0.35 mg/l20 Mar 2024, 06:51: 0.09 mg/l16 Apr 2024, 11:01: 0.17 mg/l13 May 2024, 10:23: 0.48 mg/l17 Jun 2024, 11:38: 0.46 mg/l19 Jul 2024, 08:32: 0.05 mg/l21 Aug 2024, 09:31: 0.052 mg/l16 Sep 2024, 13:10: 0.1 mg/l17 Oct 2024, 10:28: 0.057 mg/l18 Nov 2024, 10:39: 0.17 mg/l3 Dec 2024, 09:21: 0.18 mg/l20 Jan 2025, 13:50: 0.4 mg/l3 Feb 2025, 11:24: 0.33 mg/l4 Mar 2025, 11:41: 0.5 mg/l9 Dec 2025, 11:46: 0.18 mg/l7 Jan 2026, 11:02: 2.7 mg/l2 Feb 2026, 13:42: 0.38 mg/l2 Mar 2026, 08:59: 0.2 mg/l1 Apr 2026, 12:20: 0.74 mg/l5 May 2026, 12:13: 1.1 mg/l
Every result (24)
SampledResult as publishedReads as
5 May 2026, 12:131.1 1.1 mg/l
1 Apr 2026, 12:200.74 0.74 mg/l
2 Mar 2026, 08:590.2 0.2 mg/l
2 Feb 2026, 13:420.38 0.38 mg/l
7 Jan 2026, 11:022.7 2.7 mg/l
9 Dec 2025, 11:460.18 0.18 mg/l
4 Mar 2025, 11:410.5 0.5 mg/l
3 Feb 2025, 11:240.33 0.33 mg/l
20 Jan 2025, 13:500.4 0.4 mg/l
3 Dec 2024, 09:210.18 0.18 mg/l
18 Nov 2024, 10:390.17 0.17 mg/l
17 Oct 2024, 10:280.057 0.057 mg/l
16 Sep 2024, 13:100.1 0.1 mg/l
21 Aug 2024, 09:310.052 0.052 mg/l
19 Jul 2024, 08:320.05 0.05 mg/l
17 Jun 2024, 11:380.46 0.46 mg/l
13 May 2024, 10:230.48 0.48 mg/l
16 Apr 2024, 11:010.17 0.17 mg/l
20 Mar 2024, 06:510.09 0.09 mg/l
19 Feb 2024, 10:240.35 0.35 mg/l
15 Jan 2024, 11:230.2 0.2 mg/l
6 Dec 2023, 12:040.071 0.071 mg/l
24 Nov 2023, 10:370.068 0.068 mg/l
30 Oct 2023, 11:310.034 0.034 mg/l

Nitrate

as nitrogen (N) · code 0117 · mg/l

10.7 mg/l

Sampled 5 May 2026, 5 months ago · 24 results banked

02.557.51012.5mg/l20242025202630 Oct 2023, 11:31: 2.99 mg/l24 Nov 2023, 10:37: 4.97 mg/l6 Dec 2023, 12:04: 3.59 mg/l15 Jan 2024, 11:23: 3.77 mg/l19 Feb 2024, 10:24: 4.15 mg/l20 Mar 2024, 06:51: 3.07 mg/l16 Apr 2024, 11:01: 4.96 mg/l13 May 2024, 10:23: 5.05 mg/l17 Jun 2024, 11:38: 5.89 mg/l19 Jul 2024, 08:32: 3.17 mg/l21 Aug 2024, 09:31: 6.61 mg/l16 Sep 2024, 13:10: 9.55 mg/l17 Oct 2024, 10:28: 2.08 mg/l18 Nov 2024, 10:39: 3.94 mg/l3 Dec 2024, 09:21: 3.65 mg/l20 Jan 2025, 13:50: 4.85 mg/l3 Feb 2025, 11:24: 4.85 mg/l4 Mar 2025, 11:41: 5.81 mg/l9 Dec 2025, 11:46: 3.36 mg/l7 Jan 2026, 11:02: 5.92 mg/l2 Feb 2026, 13:42: 3.96 mg/l2 Mar 2026, 08:59: 3.26 mg/l1 Apr 2026, 12:20: 7.86 mg/l5 May 2026, 12:13: 10.7 mg/l
Every result (24)
SampledResult as publishedReads as
5 May 2026, 12:1310.7 10.7 mg/l
1 Apr 2026, 12:207.86 7.86 mg/l
2 Mar 2026, 08:593.26 3.26 mg/l
2 Feb 2026, 13:423.96 3.96 mg/l
7 Jan 2026, 11:025.92 5.92 mg/l
9 Dec 2025, 11:463.36 3.36 mg/l
4 Mar 2025, 11:415.81 5.81 mg/l
3 Feb 2025, 11:244.85 4.85 mg/l
20 Jan 2025, 13:504.85 4.85 mg/l
3 Dec 2024, 09:213.65 3.65 mg/l
18 Nov 2024, 10:393.94 3.94 mg/l
17 Oct 2024, 10:282.08 2.08 mg/l
16 Sep 2024, 13:109.55 9.55 mg/l
21 Aug 2024, 09:316.61 6.61 mg/l
19 Jul 2024, 08:323.17 3.17 mg/l
17 Jun 2024, 11:385.89 5.89 mg/l
13 May 2024, 10:235.05 5.05 mg/l
16 Apr 2024, 11:014.96 4.96 mg/l
20 Mar 2024, 06:513.07 3.07 mg/l
19 Feb 2024, 10:244.15 4.15 mg/l
15 Jan 2024, 11:233.77 3.77 mg/l
6 Dec 2023, 12:043.59 3.59 mg/l
24 Nov 2023, 10:374.97 4.97 mg/l
30 Oct 2023, 11:312.99 2.99 mg/l

Phosphate

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

0.36 mg/l

Sampled 5 May 2026, 5 months ago · 24 results banked

00.511.5mg/l20242025202630 Oct 2023, 11:31: 0.075 mg/l24 Nov 2023, 10:37: 0.25 mg/l6 Dec 2023, 12:04: 0.11 mg/l15 Jan 2024, 11:23: 0.2 mg/l19 Feb 2024, 10:24: 0.27 mg/l20 Mar 2024, 06:51: 0.14 mg/l16 Apr 2024, 11:01: 0.31 mg/l13 May 2024, 10:23: 0.72 mg/l17 Jun 2024, 11:38: 0.84 mg/l19 Jul 2024, 08:32: 0.3 mg/l21 Aug 2024, 09:31: 0.83 mg/l16 Sep 2024, 13:10: 1.1 mg/l17 Oct 2024, 10:28: 0.18 mg/l18 Nov 2024, 10:39: 0.33 mg/l3 Dec 2024, 09:21: 0.32 mg/l20 Jan 2025, 13:50: 0.31 mg/l3 Feb 2025, 11:24: 0.34 mg/l4 Mar 2025, 11:41: 0.56 mg/l9 Dec 2025, 11:46: 0.04 mg/l7 Jan 2026, 11:02: 0.023 mg/l2 Feb 2026, 13:42: 0.026 mg/l2 Mar 2026, 08:59: 0.019 mg/l1 Apr 2026, 12:20: 0.012 mg/l5 May 2026, 12:13: 0.36 mg/l
Every result (24)
SampledResult as publishedReads as
5 May 2026, 12:130.36 0.36 mg/l
1 Apr 2026, 12:200.012 0.012 mg/l
2 Mar 2026, 08:590.019 0.019 mg/l
2 Feb 2026, 13:420.026 0.026 mg/l
7 Jan 2026, 11:020.023 0.023 mg/l
9 Dec 2025, 11:460.04 0.04 mg/l
4 Mar 2025, 11:410.56 0.56 mg/l
3 Feb 2025, 11:240.34 0.34 mg/l
20 Jan 2025, 13:500.31 0.31 mg/l
3 Dec 2024, 09:210.32 0.32 mg/l
18 Nov 2024, 10:390.33 0.33 mg/l
17 Oct 2024, 10:280.18 0.18 mg/l
16 Sep 2024, 13:101.1 1.1 mg/l
21 Aug 2024, 09:310.83 0.83 mg/l
19 Jul 2024, 08:320.3 0.3 mg/l
17 Jun 2024, 11:380.84 0.84 mg/l
13 May 2024, 10:230.72 0.72 mg/l
16 Apr 2024, 11:010.31 0.31 mg/l
20 Mar 2024, 06:510.14 0.14 mg/l
19 Feb 2024, 10:240.27 0.27 mg/l
15 Jan 2024, 11:230.2 0.2 mg/l
6 Dec 2023, 12:040.11 0.11 mg/l
24 Nov 2023, 10:370.25 0.25 mg/l
30 Oct 2023, 11:310.075 0.075 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

549 µS/cm

Sampled 5 May 2026, 5 months ago · 24 results banked

200300400500600µS/cm20242025202630 Oct 2023, 11:31: 235 µS/cm24 Nov 2023, 10:37: 321 µS/cm6 Dec 2023, 12:04: 281 µS/cm15 Jan 2024, 11:23: 355 µS/cm19 Feb 2024, 10:24: 368 µS/cm20 Mar 2024, 06:51: 383 µS/cm16 Apr 2024, 11:01: 348 µS/cm13 May 2024, 10:23: 405 µS/cm17 Jun 2024, 11:38: 362 µS/cm19 Jul 2024, 08:32: 457 µS/cm21 Aug 2024, 09:31: 599 µS/cm16 Sep 2024, 13:10: 569 µS/cm17 Oct 2024, 10:28: 236 µS/cm18 Nov 2024, 10:39: 400 µS/cm3 Dec 2024, 09:21: 340 µS/cm20 Jan 2025, 13:50: 361 µS/cm3 Feb 2025, 11:24: 333 µS/cm4 Mar 2025, 11:41: 386 µS/cm9 Dec 2025, 11:46: 252 µS/cm7 Jan 2026, 11:02: 487 µS/cm2 Feb 2026, 13:42: 294 µS/cm2 Mar 2026, 08:59: 359 µS/cm1 Apr 2026, 12:20: 473 µS/cm5 May 2026, 12:13: 549 µS/cm
Every result (24)
SampledResult as publishedReads as
5 May 2026, 12:13549 549 µS/cm
1 Apr 2026, 12:20473 473 µS/cm
2 Mar 2026, 08:59359 359 µS/cm
2 Feb 2026, 13:42294 294 µS/cm
7 Jan 2026, 11:02487 487 µS/cm
9 Dec 2025, 11:46252 252 µS/cm
4 Mar 2025, 11:41386 386 µS/cm
3 Feb 2025, 11:24333 333 µS/cm
20 Jan 2025, 13:50361 361 µS/cm
3 Dec 2024, 09:21340 340 µS/cm
18 Nov 2024, 10:39400 400 µS/cm
17 Oct 2024, 10:28236 236 µS/cm
16 Sep 2024, 13:10569 569 µS/cm
21 Aug 2024, 09:31599 599 µS/cm
19 Jul 2024, 08:32457 457 µS/cm
17 Jun 2024, 11:38362 362 µS/cm
13 May 2024, 10:23405 405 µS/cm
16 Apr 2024, 11:01348 348 µS/cm
20 Mar 2024, 06:51383 383 µS/cm
19 Feb 2024, 10:24368 368 µS/cm
15 Jan 2024, 11:23355 355 µS/cm
6 Dec 2023, 12:04281 281 µS/cm
24 Nov 2023, 10:37321 321 µS/cm
30 Oct 2023, 11:31235 235 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 24 Oct 2023 – May 2026 98.9% 5 May 2026
Oxygen, Dissolved as O2 9924 River water 24 Oct 2023 – May 2026 11 mg/l 5 May 2026
Temperature of Water 0076 River water 24 Oct 2023 – May 2026 10.7 °C 5 May 2026
pH 0061 River water 24 Oct 2023 – May 2026 7.85 5 May 2026
Ammoniacal Nitrogen as N 0111 River water 24 Oct 2023 – May 2026 1.1 mg/l 5 May 2026
Nitrate as N 0117 River water 24 Oct 2023 – May 2026 10.7 mg/l 5 May 2026
Orthophosphate, reactive as P 0180 River water 24 Oct 2023 – May 2026 0.36 mg/l 5 May 2026
Conductivity at 25 C 0077 River water 24 Oct 2023 – May 2026 549 µS/cm 5 May 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 24 Oct 2023 – May 2026 86 mg/l 5 May 2026
Ammonia un-ionised as N 0119 River water 24 Oct 2023 – May 2026 0.015 mg/l 5 May 2026
BOD : 5 Day ATU 0085 River water 19 Feb 2024 – May 2026 5.1 mg/l 5 May 2026
Nitrite as N 0118 River water 24 Oct 2023 – May 2026 0.35 mg/l 5 May 2026
Nitrogen, Total Oxidised as N 0116 River water 24 Oct 2023 – May 2026 11 mg/l 5 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.