sampling point
River Tamar At Lower Tamar Lake Surface
| Description | RIVER TAMAR AT LOWER TAMAR LAKE SURFACE - ADDITIONAL HISTORIC DATA ON URN R12L018 |
|---|---|
| Sampling point ID | SW-91210289 |
| Type | Freshwater – Lakes/Ponds/Reservoirs |
| Status | open |
| Location |
easting northing: 229543 110823 lat lon: 50.871705, -4.423978 |
| Area | Devon And Cornwall |
| Sub-Area | Central Devon And Cornwall |
| Summary | 190 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.
44 determinands have been measured at this site
- Action taken
- Alky pH 4.5
- Ammonia(N)
- BOD ATU
- BOD5DyATUFil
- CHLOR A
- CHLOROPHYLL
- Ca Filtered
- Calcium - Ca
- Chlorophyl-A
- Colour Filt
- Cond @ 20C
- Cond @ 25C
- Cu Filtered
- Hardness
- Hdnss Ca
- Hdnss Mg
- Magnesium-Mg
- Mg Filtered
- Mineral Oils
- N Digested
- N Inorganic
- N Oxid Filt
- N Oxidised
- N-Kjeldahl
- NH3 un-ion
- Nitrate-N
- Nitrite-N
- Nitrogen - N
- O Diss %sat
- Oil & Grs Vs
- Orthophospht
- OrthophsFilt
- Oxygen Diss
- Phenol Odour
- PhenolicOdor
- Phosphorus-P
- 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 190 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 18 Jan 2018 to 26 Jul 2024
| Notation | Determinand | Units | 18 Jan 2018 12:52 | 19 Apr 2018 11:59 | 24 Jul 2018 12:56 | 16 Oct 2018 12:05 | 11 Jan 2019 12:14 | 17 May 2019 15:01 | 8 Jul 2019 12:07 | 21 Oct 2019 13:05 | 17 Jan 2020 12:58 | 26 Jul 2024 10:56 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0072 | Colour, Filtered | hazen | 23 | 22 | 21 | 21 | 16 | 27 | 19 | 27 | 22 | |
| 0077 | Conductivity at 25 C | μs/cm | 161 | 140 | 181 | 168 | 156 | 164 | 170 | 148 | 146 | 155 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 24 | 30 | 41 | 34 | 32 | 39 | 37 | 31 | 27 | 42 |
| 0348 | Phosphorus, Total as P | mg/l | 0.0904 | 0.053 | 0.096 | 0.053 | 0.0617 | 0.0353 | 0.085 | 0.049 | 0.056 | 0.071 |
| 7887 | Chlorophyll : Acetone Extract | μg/l | 4.3 | 29.8 | 6.8 | 12 | 4.1 | 6.4 | 47 | 2.4 | 3.5 | 33 |
| 9686 | Nitrogen, Total as N | mg/l | 1.98 | 1.68 | 0.99 | 1.58 | 2.28 | 0.68 | 0.96 | 2.2 | 2.4 | 1 |
| 9856 | Orthophosphate, Filtered as P | mg/l | 0.0441 | 0.005 | 0.0097 | 0.0122 | 0.0214 | 0.0059 | 0.007 | 0.02 | 0.025 | 0.0065 |
| 9943 | Nitrogen, Total Oxidised, Filtered as N | mg/l | 1.42 | 0.985 | 0.0072 | 0.854 | 1.72 | 0.196 | < 0.05 | 1.7 | 1.9 | 0.14 |
Samples from 23 Jul 2015 to 31 Oct 2017
| Notation | Determinand | Units | 23 Jul 2015 13:04 | 22 Oct 2015 12:02 | 11 Jan 2016 12:21 | 13 Apr 2016 13:46 | 1 Aug 2016 11:41 | 28 Oct 2016 11:25 | 12 Jan 2017 13:04 | 15 May 2017 13:58 | 21 Jul 2017 14:18 | 31 Oct 2017 11:51 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0072 | Colour, Filtered | hazen | 20 | 29 | 29 | 17 | 23 | 25 | 30 | 22 | 20 | 29 |
| 0077 | Conductivity at 25 C | μs/cm | 169 | 155 | 160 | 156 | 171 | 156 | 147 | 159 | 160 | 164 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 51 | 36 | 26 | 31 | 44 | 36 | 31 | 36 | 41 | 36 |
| 0348 | Phosphorus, Total as P | mg/l | 0.0538 | 0.0445 | 0.0853 | 0.0408 | 0.061 | 0.0466 | 0.0848 | 0.041 | 0.065 | 0.0645 |
| 7887 | Chlorophyll : Acetone Extract | μg/l | 24.3 | 19.6 | 5.3 | 21.9 | 50 | 26.1 | 7.3 | 11.4 | 27.4 | 7.4 |
| 9686 | Nitrogen, Total as N | mg/l | 0.79 | 1.58 | 2.4 | 1.91 | 0.98 | 1.39 | 2.36 | 1.17 | 0.89 | 2.04 |
| 9856 | Orthophosphate, Filtered as P | mg/l | 0.0039 | 0.0086 | 0.0368 | 0.0028 | 0.0073 | 0.0079 | 0.0323 | 0.0085 | 0.0072 | 0.0241 |
| 9943 | Nitrogen, Total Oxidised, Filtered as N | mg/l | 0.0082 | 0.92 | 1.72 | 1.27 | 0.0114 | 0.635 | 1.65 | 0.559 | 0.0298 | 1.2 |