sampling point
River Taw At Chenson
| Description | RIVER TAW AT CHENSON |
|---|---|
| Sampling point ID | SW-73020305 |
| Type | Freshwater – Rivers |
| Status | closed |
| Location |
easting northing: 270215 109533 lat lon: 50.870683, -3.845841 |
| Area | Devon And Cornwall |
| Sub-Area | East Devon And Cornwall |
| Summary | 161 samples taken between 2013 and 2000 |
Determinands
Determinands identify a property which can be measured on a sample or the sampling environment, together with the units in which the result of that measurement will be expressed.
29 determinands have been measured at this site
- Action taken
- Alky pH 4.5
- Ammonia(N)
- BOD ATU
- Calcium - Ca
- Cond @ 20C
- Cond @ 25C
- Cu Filtered
- Hardness
- Hdnss Ca
- Hdnss Mg
- Magnesium-Mg
- N Inorganic
- N Oxidised
- NH3 un-ion
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Oil & Grs Vs
- Orthophospht
- Oxygen Diss
- Phenol Odour
- Potassium- K
- Sld Sus@105C
- Temp Water
- Type of Flow
- WethPresPrec
- Zinc - as Zn
- pH
Sampling results
Displaying the twenty most recent samples. You can see all 161 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 21 Feb 2013 to 19 Nov 2013
| Notation | Determinand | Units | 21 Feb 2013 11:40 | 21 Mar 2013 14:07 | 2 May 2013 12:27 | 30 May 2013 12:03 | 3 Jul 2013 08:50 | 1 Aug 2013 12:04 | 4 Oct 2013 10:24 | 10 Oct 2013 09:29 | 6 Nov 2013 12:22 | 19 Nov 2013 12:08 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.7 | 7.6 | 8.9 | 8.3 | 7.82 | 8 | 7.3 | 7.8 | 7.6 | 7.88 | |
| 0076 | Temperature of Water | °C | 4.4 | 5.5 | 11.1 | 13.4 | 13.9 | 18.8 | 15.4 | 11 | 12 | 7.6 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.04 | 0.094 | < 0.03 | < 0.03 | < 0.03 | 0.05 | 0.081 | < 0.03 | < 0.03 | < 0.03 |
| 0118 | Nitrite as N | mg/l | 0.0142 | 0.0209 | 0.0181 | 0.0124 | 0.0249 | 0.0223 | 0.0343 | 0.0056 | 0.0097 | 0.0117 |
| 0119 | Ammonia un-ionised as N | mg/l | 0.00024 | 0.00049 | < 0.00059 | < 0.0007 | < 0.00048 | 0.00173 | 0.00045 | < 0.00037 | < 0.00026 | < 0.00035 |
| 0135 | Solids, Suspended at 105 C | mg/l | 6.4 | 28.1 | 4 | 5.23 | 3.17 | < 3 | 104 | 3.62 | 20.6 | 4.5 |
| 0664 | Visible oil or grease, significant trace: Present/Not found (1/0) | pres/nf | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 6450 | Copper, Dissolved | μg/l | 1.21 | 1.72 | 1.72 | 1.87 | 2.42 | 3.52 | 3.99 | 2.28 | 2.76 | 2.34 |
| 6455 | Zinc | μg/l | < 5 | 8.14 | < 5 | < 5 | 6.31 | < 5 | 23 | 5.5 | 8.37 | 8.83 |
| 6841 | Phenolic Odour | pres/nf | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 102 | 100 | 125 | 114 | 96 | 98 | 92.5 | 93 | 95 | 89.4 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 13.2 | 12.6 | 13.7 | 11.9 | 9.89 | 9.1 | 9.22 | 10.2 | 10.2 | 10.7 |
Samples from 2 May 2012 to 28 Jan 2013
| Notation | Determinand | Units | 2 May 2012 13:27 | 13 Jun 2012 09:31 | 29 Jun 2012 12:32 | 22 Aug 2012 09:13 | 31 Aug 2012 11:24 | 28 Sep 2012 13:46 | 6 Nov 2012 10:51 | 30 Nov 2012 14:13 | 8 Jan 2013 12:42 | 28 Jan 2013 09:02 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.6 | 7.4 | 7.6 | 7.9 | 7.7 | 7.49 | 7.4 | 7.48 | 7.6 | 7.5 | |
| 0076 | Temperature of Water | °C | 11 | 12 | 14.7 | 15.2 | 12.9 | 12.2 | 6.7 | 5.4 | 9.1 | 5.1 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | < 0.03 | 0.123 | < 0.03 | < 0.03 | < 0.03 | < 0.03 | < 0.03 | 0.03 | 0.048 | 0.08 |
| 0118 | Nitrite as N | mg/l | 0.0079 | 0.0226 | 0.0156 | 0.0066 | 0.0081 | 0.0089 | 0.0099 | 0.0105 | 0.0225 | 0.0129 |
| 0119 | Ammonia un-ionised as N | mg/l | < 0.00024 | 0.00066 | < 0.00031 | < 0.00064 | < 0.00034 | < 0.0002 | < 0.00011 | 0.00012 | 0.00033 | 0.00032 |
| 0135 | Solids, Suspended at 105 C | mg/l | 17.6 | 164 | 4.9 | 5.03 | 9.53 | 8.58 | 6.03 | 12.8 | 6.6 | 24.7 |
| 0664 | Visible oil or grease, significant trace: Present/Not found (1/0) | pres/nf | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 6450 | Copper, Dissolved | μg/l | 2.22 | 4.01 | 1.91 | 2.15 | 2.22 | 2.11 | 1.53 | 2.02 | 1.72 | 2.08 |
| 6455 | Zinc | μg/l | 5.77 | 25.4 | < 5 | 5.52 | < 5 | < 5 | < 5 | 12.6 | < 5 | 27.4 |
| 6841 | Phenolic Odour | pres/nf | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 100.1 | 92 | 95 | 94 | 98 | 104 | 105 | 92 | 96 | 97.6 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 11 | 9.89 | 9.62 | 9.41 | 10.3 | 11.1 | 12.8 | 11.6 | 11.1 | 12.4 |