sampling point
River Tamar At Boyton Bridge
| Description | RIVER TAMAR AT BOYTON BRIDGE BELOW BOYTON STW |
|---|---|
| Sampling point ID | SW-81290191 |
| Type | Freshwater – Rivers |
| Status | open |
| Location |
easting northing: 232825 92257 lat lon: 50.705852, -4.368925 |
| Area | Devon And Cornwall |
| Sub-Area | Central Devon And Cornwall |
| Summary | 177 samples taken between 2024 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.
36 determinands have been measured at this site
- Action taken
- Alky pH 4.5
- Ammonia(N)
- BOD ATU
- BOD5DyATUFil
- Calcium - Ca
- Chlorophyl-A
- Cond @ 20C
- Cond @ 25C
- Cu Filtered
- Dtrgt NncSyn
- DtrgtAncSyn
- GCMS S-Vol
- Hardness
- Hdnss Ca
- Hdnss Mg
- Magnesium-Mg
- N Digested
- N Inorganic
- N Oxidised
- N-Kjeldahl
- NH3 un-ion
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Orthophospht
- Oxygen Diss
- Phosphorus-P
- Potassium- K
- SiO2 Rv
- 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 177 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 14 Jul 2023 to 5 Jun 2024
| Notation | Determinand | Units | 14 Jul 2023 13:25 | 2 Aug 2023 11:44 | 7 Sep 2023 13:57 | 13 Oct 2023 13:30 | 7 Nov 2023 10:23 | 6 Dec 2023 13:05 | 22 Jan 2024 11:11 | 20 Feb 2024 12:43 | 5 Mar 2024 11:14 | 5 Jun 2024 12:10 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.46 | 7.72 | 6.97 | 7.56 | 7.21 | 7.13 | 7.36 | 7.29 | 7.92 | ||
| 0076 | Temperature of Water | °C | 15.6 | 19.4 | 15.8 | 10.5 | 6.4 | 8.3 | 10.2 | 6.8 | 15.2 | |
| 0077 | Conductivity at 25 C | μs/cm | 191 | 218 | 171 | 191 | 191 | 171 | 180 | 164 | 227 | |
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.14 | 0.053 | < 0.03 | 0.13 | 0.052 | 0.07 | 0.21 | 0.063 | 0.16 | 0.046 |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 1.2 | 1.8 | 1.6 | 1.7 | 2.2 | 2.6 | 1.4 | 2.2 | 1.6 | 1.4 |
| 0117 | Nitrate as N | mg/l | 1.19 | 1.78 | 1.6 | 1.68 | 2.19 | 2.59 | 1.38 | 2.18 | 1.58 | 1.4 |
| 0118 | Nitrite as N | mg/l | 0.0054 | 0.018 | < 0.004 | 0.016 | 0.01 | 0.015 | 0.023 | 0.02 | 0.023 | < 0.004 |
| 0119 | Ammonia un-ionised as N | mg/l | 0.00043 | < 0.00058 | 0.00035 | 0.00036 | 0.00016 | 0.00046 | 0.00027 | 0.00046 | 0.00102 | |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 57 | 41 | 51 | 38 | 42 | 38 | 32 | 39 | 40 | 59 |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.1 | 0.078 | 0.053 | 0.12 | 0.029 | 0.044 | 0.046 | 0.052 | 0.047 | 0.058 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 92.1 | 100.1 | 89.6 | 97 | 94.1 | 92.2 | 95.1 | 95 | 107 | |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 9.14 | 9.19 | 8.86 | 10.8 | 11.6 | 10.8 | 10.7 | 11.6 | 10.7 |