sampling point
Colliford Lake Dam Surface
| Description | ST. NEOT RIVER AT COLLIFORD LAKE DAM SURFACE - ADDITIONAL HISTORIC DATA ON URN R15B034 |
|---|---|
| Sampling point ID | SW-81522776 |
| Type | Freshwater – Rivers |
| Status | open |
| Location |
easting northing: 217687 71007 lat lon: 50.510396, -4.572651 |
| Area | Devon And Cornwall |
| Sub-Area | West Devon And Cornwall |
| Summary | 295 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.
41 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
- Diquat
- Hardness
- Hdnss Ca
- Hdnss Mg
- Magnesium-Mg
- Mg Filtered
- Mineral Oils
- N Oxid Filt
- N Oxidised
- NATGRIDREF
- NH3 un-ion
- Nitrate-N
- Nitrite-N
- Nitrogen - N
- O Diss %sat
- Oil & Grs Vs
- Orthophospht
- OrthophsFilt
- Oxygen Diss
- Phenol Odour
- PhenolicOdor
- Phosphorus-P
- Phytoplankto
- 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 295 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 2 Jul 2019 to 10 Mar 2020
| Notation | Determinand | Units | 2 Jul 2019 13:34 | 5 Aug 2019 15:51 | 4 Sep 2019 15:06 | 10 Oct 2019 12:29 | 4 Nov 2019 10:53 | 4 Dec 2019 12:01 | 10 Jan 2020 10:08 | 29 Jan 2020 13:31 | 12 Feb 2020 11:29 | 10 Mar 2020 13:58 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0072 | Colour, Filtered | hazen | 11 | 15 | 12 | 14 | 17 | 19 | 16 | 19 | 12 | |
| 0077 | Conductivity at 25 C | μs/cm | 73 | 74 | 73 | 80 | 71 | 70 | 70 | 72 | 69 | |
| 0348 | Phosphorus, Total as P | mg/l | 0.016 | 0.037 | 0.039 | 0.015 | 0.02 | 0.012 | 0.0093 | 0.013 | ||
| 3000 | Diquat | μg/l | < 1 | |||||||||
| 7610 | Alkalinity to pH 4.5 : Grans Plot | mg/l | 5.3 | 6.1 | 5.9 | 6.4 | 6.49 | 5.1 | 5.3 | 4.4 | 4.4 | |
| 7887 | Chlorophyll : Acetone Extract | μg/l | 12 | 300 | 35 | 32 | 26.1 | 19 | 5.9 | 6.3 | 11 | |
| 9686 | Nitrogen, Total as N | mg/l | 0.61 | 0.85 | 0.66 | 0.54 | 0.55 | 0.73 | 0.74 | 0.67 | 0.69 | |
| 9856 | Orthophosphate, Filtered as P | mg/l | < 0.001 | 0.0042 | < 0.001 | 0.0019 | 0.0011 | 0.0039 | 0.002 | 0.0019 | 0.0017 | |
| 9943 | Nitrogen, Total Oxidised, Filtered as N | mg/l | 0.28 | 0.15 | 0.092 | 0.086 | 0.122 | 0.2 | 0.26 | 0.32 | 0.33 |
Samples from 10 Sep 2018 to 11 Jun 2019
| Notation | Determinand | Units | 10 Sep 2018 13:11 | 2 Oct 2018 11:13 | 8 Nov 2018 12:24 | 22 Nov 2018 11:29 | 15 Jan 2019 14:18 | 7 Feb 2019 10:57 | 4 Mar 2019 11:08 | 17 Apr 2019 12:43 | 23 May 2019 14:36 | 11 Jun 2019 14:32 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0072 | Colour, Filtered | hazen | 26 | 20 | 13 | 17 | 16 | 15 | 12 | 13 | 13 | 14 |
| 0077 | Conductivity at 25 C | μs/cm | 73 | 68 | 71 | 70 | 72 | 73 | 71 | 87 | 73 | 81 |
| 0348 | Phosphorus, Total as P | mg/l | 0.0329 | 0.0246 | 0.0253 | 0.0272 | 0.0161 | 0.0133 | 0.0135 | 0.0126 | 0.0206 | 0.083 |
| 3000 | Diquat | μg/l | < 1 | < 1 | < 1 | < 1 | < 1 | < 1 | < 1 | < 1 | < 1 | < 1 |
| 7610 | Alkalinity to pH 4.5 : Grans Plot | mg/l | 5.74 | 5.97 | 7.42 | 6.21 | 5.44 | 5.14 | 5.59 | 5.04 | 4.91 | 4.9 |
| 7887 | Chlorophyll : Acetone Extract | μg/l | 94.7 | 67.4 | 45.7 | 48.7 | 4.8 | 8.5 | 15.4 | 8.9 | 10.8 | 22 |
| 9686 | Nitrogen, Total as N | mg/l | 0.69 | 0.51 | 0.58 | 0.71 | 0.78 | 0.72 | 0.75 | 0.73 | 0.73 | 0.78 |
| 9856 | Orthophosphate, Filtered as P | mg/l | 0.0035 | 0.0023 | 0.0028 | 0.0028 | < 0.001 | 0.0027 | 0.001 | 0.0014 | 0.0013 | < 0.001 |
| 9943 | Nitrogen, Total Oxidised, Filtered as N | mg/l | 0.0197 | 0.013 | 0.0513 | 0.105 | 0.316 | 0.345 | 0.391 | 0.363 | 0.307 | 0.31 |