sampling point
Roadford Reservoir Near Dam Surface
| Description | ROADFORD RESERVOIR NEAR DAM-DEPTH AT SURFACE |
|---|---|
| Sampling point ID | SW-81271564 |
| Type | Freshwater – Lakes/Ponds/Reservoirs |
| Status | open |
| Location |
easting northing: 242200 90100 lat lon: 50.689091, -4.235343 |
| Area | Devon And Cornwall |
| Sub-Area | Central Devon And Cornwall |
| Summary | 205 samples taken between 2020 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.
39 determinands have been measured at this site
- Action taken
- Alk-Gran
- Alky pH 4.5
- Ammonia(N)
- BOD ATU
- CHLOROPHYLL
- Ca Filtered
- Calcium - Ca
- Colour Filt
- Cond @ 20C
- Cond @ 25C
- Cu Filtered
- Hardness
- Hdnss Ca
- Hdnss Mg
- Magnesium-Mg
- Mg Filtered
- Mineral Oils
- N Oxid Filt
- N Oxidised
- NH3 un-ion
- NO FLOW/SAMP
- Nitrate-N
- Nitrite-N
- Nitrogen - N
- O Diss %sat
- Oil & Grs Vs
- Orthophospht
- OrthophsFilt
- Oxygen Diss
- Phenol Odour
- PhenolicOdor
- Phosphorus-P
- Sld Sus@105C
- Temp Water
- Type of Flow
- Vol Filtered
- Zinc - as Zn
- pH
Sampling results
Displaying the twenty most recent samples. You can see all 205 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 15 Nov 2017 to 20 Jan 2020
| Notation | Determinand | Units | 15 Nov 2017 10:24 | 22 Jan 2018 10:46 | 1 Oct 2018 10:19 | 29 Oct 2018 10:45 | 12 Nov 2018 10:22 | 14 Jan 2019 10:13 | 3 Jun 2019 09:38 | 8 Jul 2019 10:30 | 28 Oct 2019 10:43 | 20 Jan 2020 10:17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0072 | Colour, Filtered | hazen | 13 | 13 | 10 | 8.7 | 9.5 | 12 | 10 | 11 | 15 | 15 |
| 0077 | Conductivity at 25 C | μs/cm | 119 | 125 | 122 | 122 | 118 | 124 | 132 | 119 | 118 | 115 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 22 | 18 | 22 | 23 | 21 | 16 | 14 | 20 | 19 | 15 |
| 0348 | Phosphorus, Total as P | mg/l | 0.0199 | 0.0201 | 0.0162 | 0.0173 | 0.0186 | 0.0156 | 0.0143 | 0.011 | 0.019 | 0.017 |
| 7887 | Chlorophyll : Acetone Extract | μg/l | 16.2 | 6.9 | 14.2 | 5.4 | 5.3 | 3.3 | 6.8 | 4.2 | 8.7 | 0.68 |
| 9686 | Nitrogen, Total as N | mg/l | 0.86 | 1.01 | 0.73 | 0.84 | 0.92 | 1.15 | 1.04 | 0.91 | 0.98 | 1.1 |
| 9856 | Orthophosphate, Filtered as P | mg/l | 0.0017 | 0.0012 | 0.0013 | 0.0016 | 0.0028 | 0.0034 | 0.0012 | 0.0026 | < 0.001 | |
| 9943 | Nitrogen, Total Oxidised, Filtered as N | mg/l | 0.309 | 0.433 | 0.313 | 0.374 | 0.426 | 0.796 | 0.653 | 0.54 | 0.49 |
Samples from 29 Apr 2015 to 21 Jul 2017
| Notation | Determinand | Units | 29 Apr 2015 09:14 | 22 Jul 2015 09:52 | 21 Oct 2015 11:29 | 5 Jan 2016 09:53 | 13 Apr 2016 11:30 | 14 Jul 2016 09:48 | 21 Oct 2016 10:24 | 23 Jan 2017 11:01 | 28 Apr 2017 10:46 | 21 Jul 2017 10:44 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0072 | Colour, Filtered | hazen | 9.6 | 8.7 | 10 | 14 | 12 | 8.6 | 14 | 9 | 10 | 14 |
| 0077 | Conductivity at 25 C | μs/cm | 120 | 113 | 125 | 130 | 114 | 147 | 121 | 117 | 121 | 120 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 16 | 21 | 18 | 29 | 17 | 22 | 25 | 21 | 18 | 24 |
| 0348 | Phosphorus, Total as P | mg/l | 0.0097 | 0.0153 | 0.0125 | 0.0179 | 0.0151 | 0.0124 | 0.0162 | 0.0129 | 0.0122 | 0.0129 |
| 7887 | Chlorophyll : Acetone Extract | μg/l | 3.1 | 2.8 | 8.4 | 3.5 | 13.6 | 6.4 | 11.8 | 6 | 7.7 | 13.7 |
| 9686 | Nitrogen, Total as N | mg/l | 0.82 | 0.69 | 0.72 | 0.83 | 0.93 | 0.78 | 0.76 | 0.91 | 0.98 | 0.78 |
| 9856 | Orthophosphate, Filtered as P | mg/l | < 0.001 | 0.0156 | 0.0011 | 0.0031 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | 0.001 | < 0.001 |
| 9943 | Nitrogen, Total Oxidised, Filtered as N | mg/l | 0.461 | 0.309 | 0.252 | 0.427 | 0.493 | 0.381 | 0.275 | 0.39 | 0.494 | 0.331 |