River Taw at Newnham Bridge

EA name: RIVER TAW AT NEWNHAM BRIDGE
Environment Agency sampling point SW-73020255 · 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 Oct 2026, 12:2821 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
7 since 24 Apr 2026 Imported periods: 1 Oct 2023 – 26 Oct 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Environmental monitoring statutory (EU directives) · results completed 7 Oct 2026
Where
National Grid 266030, 117320As published, to the nearest 10 m. Open in a map
River, by its own name
Taw
River, by the map
River TawPlaced on the river its name gives, 11 m from the line.
Next gauge downstream
Umberleigh On the River Taw · 13 km along the riverUMBERLEIGH 13 km along the riverBeside Newnham Bridge: too close to say above or below.
Nearest gauge upstream
Chulmleigh On the Little Dart River · 9.7 km along the riverLapford On the River Yeo · 18 km along the riverTaw Bridge On the River Taw · 22 km along the river
Why it was sampled
Environmental monitoring statutory (EU directives) (7 samples)

Results here were completed a median of 3 days after the sample was taken (2 to 10 days, 5 samples).

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

105.7%

Sampled 5 Oct 2026, 21 days ago · 7 results banked

90100110120130%20242025202624 Apr 2026, 12:31: 127%5 May 2026, 11:46: 100.8%9 Jun 2026, 12:58: 99%28 Jul 2026, 13:20: 109.6%13 Aug 2026, 12:53: 99%8 Sep 2026, 11:01: 106.8%5 Oct 2026, 12:28: 105.7%
Every result (7)
SampledResult as publishedReads as
5 Oct 2026, 12:28105.7 105.7%
8 Sep 2026, 11:01106.8 106.8%
13 Aug 2026, 12:5399 99%
28 Jul 2026, 13:20109.6 109.6%
9 Jun 2026, 12:5899 99%
5 May 2026, 11:46100.8 100.8%
24 Apr 2026, 12:31127 127%

Dissolved oxygen

as O2 · code 9924 · mg/l

10.5 mg/l

Sampled 5 Oct 2026, 21 days ago · 7 results banked

8101214mg/l20242025202624 Apr 2026, 12:31: 13.3 mg/l5 May 2026, 11:46: 10.5 mg/l9 Jun 2026, 12:58: 10 mg/l28 Jul 2026, 13:20: 9.73 mg/l13 Aug 2026, 12:53: 8.67 mg/l8 Sep 2026, 11:01: 10.3 mg/l5 Oct 2026, 12:28: 10.5 mg/l
Every result (7)
SampledResult as publishedReads as
5 Oct 2026, 12:2810.5 10.5 mg/l
8 Sep 2026, 11:0110.3 10.3 mg/l
13 Aug 2026, 12:538.67 8.67 mg/l
28 Jul 2026, 13:209.73 9.73 mg/l
9 Jun 2026, 12:5810 10 mg/l
5 May 2026, 11:4610.5 10.5 mg/l
24 Apr 2026, 12:3113.3 13.3 mg/l

Water temperature

code 0076 · °C

15.7 °C

Sampled 5 Oct 2026, 21 days ago · 7 results banked

12.51517.52022.5°C20242025202624 Apr 2026, 12:31: 13 °C5 May 2026, 11:46: 13.4 °C9 Jun 2026, 12:58: 14.7 °C28 Jul 2026, 13:20: 21.1 °C13 Aug 2026, 12:53: 21.8 °C8 Sep 2026, 11:01: 17.2 °C5 Oct 2026, 12:28: 15.7 °C
Every result (7)
SampledResult as publishedReads as
5 Oct 2026, 12:2815.7 15.7 °C
8 Sep 2026, 11:0117.2 17.2 °C
13 Aug 2026, 12:5321.8 21.8 °C
28 Jul 2026, 13:2021.1 21.1 °C
9 Jun 2026, 12:5814.7 14.7 °C
5 May 2026, 11:4613.4 13.4 °C
24 Apr 2026, 12:3113 13 °C

pH

code 0061

8.11

Sampled 5 Oct 2026, 21 days ago · 7 results banked

7.588.5920242025202624 Apr 2026, 12:31: 8.925 May 2026, 11:46: 7.859 Jun 2026, 12:58: 7.7128 Jul 2026, 13:20: 8.2713 Aug 2026, 12:53: 8.168 Sep 2026, 11:01: 7.785 Oct 2026, 12:28: 8.11
Every result (7)
SampledResult as publishedReads as
5 Oct 2026, 12:288.11 8.11
8 Sep 2026, 11:017.78 7.78
13 Aug 2026, 12:538.16 8.16
28 Jul 2026, 13:208.27 8.27
9 Jun 2026, 12:587.71 7.71
5 May 2026, 11:467.85 7.85
24 Apr 2026, 12:318.92 8.92

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 5 Oct 2026, 21 days ago · 7 results banked

0.030.040.050.06mg/l20242025202624 Apr 2026, 12:31: below 0.03 mg/l (not detected above this)5 May 2026, 11:46: below 0.03 mg/l (not detected above this)9 Jun 2026, 12:58: 0.053 mg/l28 Jul 2026, 13:20: below 0.03 mg/l (not detected above this)13 Aug 2026, 12:53: below 0.03 mg/l (not detected above this)8 Sep 2026, 11:01: below 0.03 mg/l (not detected above this)5 Oct 2026, 12:28: below 0.03 mg/l (not detected above this)
Every result (7)
SampledResult as publishedReads as
5 Oct 2026, 12:28<0.03 below 0.03 mg/l (not detected above this)
8 Sep 2026, 11:01<0.03 below 0.03 mg/l (not detected above this)
13 Aug 2026, 12:53<0.03 below 0.03 mg/l (not detected above this)
28 Jul 2026, 13:20<0.03 below 0.03 mg/l (not detected above this)
9 Jun 2026, 12:580.053 0.053 mg/l
5 May 2026, 11:46<0.03 below 0.03 mg/l (not detected above this)
24 Apr 2026, 12:31<0.03 below 0.03 mg/l (not detected above this)

Nitrate

as nitrogen (N) · code 0117 · mg/l

0.686 mg/l

Sampled 5 Oct 2026, 21 days ago · 7 results banked

00.511.5mg/l20242025202624 Apr 2026, 12:31: 1.19 mg/l5 May 2026, 11:46: 1.49 mg/l9 Jun 2026, 12:58: 1.19 mg/l28 Jul 2026, 13:20: below 0.196 mg/l (not detected above this)13 Aug 2026, 12:53: below 0.196 mg/l (not detected above this)8 Sep 2026, 11:01: 0.556 mg/l5 Oct 2026, 12:28: 0.686 mg/l
Every result (7)
SampledResult as publishedReads as
5 Oct 2026, 12:280.686 0.686 mg/l
8 Sep 2026, 11:010.556 0.556 mg/l
13 Aug 2026, 12:53<0.196 below 0.196 mg/l (not detected above this)
28 Jul 2026, 13:20<0.196 below 0.196 mg/l (not detected above this)
9 Jun 2026, 12:581.19 1.19 mg/l
5 May 2026, 11:461.49 1.49 mg/l
24 Apr 2026, 12:311.19 1.19 mg/l

Phosphate

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

0.12 mg/l

Sampled 5 Oct 2026, 21 days ago · 7 results banked

0.040.060.080.10.12mg/l20242025202624 Apr 2026, 12:31: 0.059 mg/l5 May 2026, 11:46: 0.049 mg/l9 Jun 2026, 12:58: 0.088 mg/l28 Jul 2026, 13:20: 0.048 mg/l13 Aug 2026, 12:53: 0.05 mg/l8 Sep 2026, 11:01: 0.092 mg/l5 Oct 2026, 12:28: 0.12 mg/l
Every result (7)
SampledResult as publishedReads as
5 Oct 2026, 12:280.12 0.12 mg/l
8 Sep 2026, 11:010.092 0.092 mg/l
13 Aug 2026, 12:530.05 0.05 mg/l
28 Jul 2026, 13:200.048 0.048 mg/l
9 Jun 2026, 12:580.088 0.088 mg/l
5 May 2026, 11:460.049 0.049 mg/l
24 Apr 2026, 12:310.059 0.059 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

450 µS/cm

Sampled 5 Oct 2026, 21 days ago · 7 results banked

100200300400500600µS/cm20242025202624 Apr 2026, 12:31: 241 µS/cm5 May 2026, 11:46: 234 µS/cm9 Jun 2026, 12:58: 196 µS/cm28 Jul 2026, 13:20: 515 µS/cm13 Aug 2026, 12:53: 566 µS/cm8 Sep 2026, 11:01: 415 µS/cm5 Oct 2026, 12:28: 450 µS/cm
Every result (7)
SampledResult as publishedReads as
5 Oct 2026, 12:28450 450 µS/cm
8 Sep 2026, 11:01415 415 µS/cm
13 Aug 2026, 12:53566 566 µS/cm
28 Jul 2026, 13:20515 515 µS/cm
9 Jun 2026, 12:58196 196 µS/cm
5 May 2026, 11:46234 234 µS/cm
24 Apr 2026, 12:31241 241 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 7 Apr 2026 – Oct 2026 105.7% 5 Oct 2026
Oxygen, Dissolved as O2 9924 River water 7 Apr 2026 – Oct 2026 10.5 mg/l 5 Oct 2026
Temperature of Water 0076 River water 7 Apr 2026 – Oct 2026 15.7 °C 5 Oct 2026
pH 0061 River water 7 Apr 2026 – Oct 2026 8.11 5 Oct 2026
Ammoniacal Nitrogen as N 0111 River water 7 Apr 2026 – Oct 2026 below 0.03 mg/l 5 Oct 2026
Nitrate as N 0117 River water 7 Apr 2026 – Oct 2026 0.686 mg/l 5 Oct 2026
Orthophosphate, reactive as P 0180 River water 7 Apr 2026 – Oct 2026 0.12 mg/l 5 Oct 2026
Conductivity at 25 C 0077 River water 7 Apr 2026 – Oct 2026 450 µS/cm 5 Oct 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 7 Apr 2026 – Oct 2026 99 mg/l 5 Oct 2026
Ammonia un-ionised as N 0119 River water 7 Apr 2026 – Oct 2026 below 0.00083 mg/l 5 Oct 2026
Nitrite as N 0118 River water 7 Apr 2026 – Oct 2026 0.0044 mg/l 5 Oct 2026
Nitrogen, Total Oxidised as N 0116 River water 7 Apr 2026 – Oct 2026 0.69 mg/l 5 Oct 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.