sampling point
Holywell Stream At Holywell Bay Bridge
| Description | HOLYWELL STREAM (COASTAL) AT HOLYWELL BAY BRIDGE |
|---|---|
| Sampling point ID | SW-82312304 |
| Type | Freshwater – Rivers |
| Status | open |
| Location |
easting northing: 176730 58850 lat lon: 50.387045, -5.142211 |
| Area | Devon And Cornwall |
| Sub-Area | West Devon And Cornwall |
| Summary | 186 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.
74 determinands have been measured at this site
- Action taken
- Al- Filtered
- Alky pH 4.5
- Aluminium-Al
- Ammonia(N)
- Arsenic - As
- As-Filtered
- B - Filtered
- BOD ATU
- Ba- Filtered
- Barium - Ba
- Boron - as B
- C - Org Filt
- Ca Filtered
- Cadmium - Cd
- Calcium - Ca
- Cd Filtered
- Chloride Ion
- Chromium -Cr
- Cond @ 20C
- Cond @ 25C
- Copper - Cu
- Cr- Filtered
- Cu BLM Bio
- Cu Filtered
- Fe- Filt
- Fluoride - F
- Hardness
- Hdnss Ca
- Hdnss Mg
- Hexachlorbnz
- IonicBalance
- Iron - as Fe
- K- Filtered
- Lead - as Pb
- Lithium - Li
- Lithium Filt
- Magnesium-Mg
- Manganse-Mn
- Mg Filtered
- Mn BLM Bio
- Mn- Filtered
- N Inorganic
- N Oxidised
- NH3 un-ion
- Na- Filtered
- Ni BLM Bio
- Ni- Filtered
- Nickel - Ni
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Orthophospht
- Oxygen Diss
- Pb BLM Bio
- Pb Filtered
- Potassium- K
- SALinsitu
- SO4dis
- SiO2 Rv
- Sld Sus@105C
- Sodium - Na
- Strontium-Sr
- StrontumFilt
- Sulphate SO4
- Temp Water
- TurbidityNTU
- Type of Flow
- WethPresPrec
- Zinc - as Zn
- Zn BLM Bio
- Zn- Filtered
- pH
- pH in-situ
Sampling results
Displaying the twenty most recent samples. You can see all 186 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 12 Jun 2023 to 15 Mar 2024
| Notation | Determinand | Units | 12 Jun 2023 10:13 | 3 Jul 2023 11:39 | 9 Aug 2023 10:05 | 14 Sep 2023 09:49 | 2 Oct 2023 10:28 | 7 Nov 2023 08:20 | 4 Dec 2023 09:39 | 15 Jan 2024 08:45 | 7 Feb 2024 09:51 | 15 Mar 2024 09:11 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0052 | Lead, Dissolved | μg/l | < 2 | < 2 | < 2 | < 2 | < 2 | < 2 | 2.6 | < 2 | 2.2 | < 2 |
| 0061 | pH | 7.92 | 8.23 | 7.83 | 7.81 | 7.65 | 7.79 | 7.88 | 7.89 | 7.73 | 7.74 | |
| 0106 | Cadmium, Dissolved | μg/l | 0.15 | 0.11 | < 0.1 | < 0.1 | < 0.1 | 0.12 | 0.19 | 0.2 | 0.18 | 0.22 |
| 0158 | Hardness, Total as CaCO3 | mg/l | 192 | 207 | 195 | 207 | 204 | 145 | 125 | 178 | 150 | 164 |
| 0235 | Magnesium, Dissolved | mg/l | 14 | 15 | 14 | 15 | 15 | 11 | 9.2 | 13 | 11 | 12 |
| 0239 | Calcium, Dissolved | mg/l | 54 | 58 | 55 | 58 | 57 | 40 | 35 | 50 | 42 | 46 |
| 0301 | Carbon, Organic, Dissolved as C :- {DOC} | mg/l | 1.2 | 1.2 | 1.4 | 1.3 | 1.5 | 3.1 | 4.6 | 1.4 | 4 | 2.1 |
| 3408 | Zinc, Dissolved | μg/l | 80 | 62 | 54 | 37 | 40 | 85 | 110 | 150 | 120 | 130 |
| 3409 | Chromium, Dissolved | μg/l | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 |
| 3410 | Nickel, Dissolved | μg/l | 1.4 | 1.2 | 1.2 | < 1 | < 1 | 2.3 | 2.6 | 1.9 | 2.6 | 2 |
| 6037 | Aluminium, Dissolved | μg/l | < 10 | < 10 | < 10 | < 10 | < 10 | 12 | 19 | < 10 | 15 | 12 |
| 6450 | Copper, Dissolved | μg/l | < 1 | < 1 | < 1 | < 1 | < 1 | 2.5 | 3.1 | 1.4 | 2.7 | 1.8 |
Samples from 9 Sep 2019 to 16 May 2023
| Notation | Determinand | Units | 9 Sep 2019 09:10 | 3 Oct 2019 10:16 | 21 Nov 2019 09:34 | 11 Dec 2019 12:28 | 17 Jan 2020 09:52 | 10 Feb 2020 09:35 | 2 Mar 2020 09:08 | 1 Mar 2023 14:57 | 3 Apr 2023 10:47 | 16 May 2023 09:34 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0052 | Lead, Dissolved | μg/l | 0.29 | 0.95 | 1.8 | 1.5 | 2.4 | 2.1 | 2.1 | < 2 | < 2 | < 2 |
| 0061 | pH | 7.95 | 7.95 | 7.72 | 7.67 | 7.83 | 7.85 | 7.85 | 7.84 | 7.7 | 8.02 | |
| 0062 | Conductivity at 20 C | μs/cm | 400 | |||||||||
| 0077 | Conductivity at 25 C | μs/cm | 450 | |||||||||
| 0106 | Cadmium, Dissolved | μg/l | 0.061 | 0.081 | 0.18 | 0.21 | 0.21 | 0.2 | 0.2 | 0.16 | 0.16 | 0.17 |
| 0158 | Hardness, Total as CaCO3 | mg/l | 192 | 150 | 171 | |||||||
| 0235 | Magnesium, Dissolved | mg/l | 14 | 13 | 11 | 12 | 11 | 12 | 14 | 11 | 13 | |
| 0239 | Calcium, Dissolved | mg/l | 54 | 46 | 41 | 44 | 41 | 46 | 54 | 42 | 47 | |
| 0301 | Carbon, Organic, Dissolved as C :- {DOC} | mg/l | 1.5 | 2.4 | 2.84 | 2 | 2.4 | 2.2 | 2.1 | 1.1 | 1.8 | 1.4 |
| 3377 | Lead : BLM Bioavailable | μg/l | 0.19 | 0.4 | 0.63 | 0.75 | 1 | 0.95 | 1 | |||
| 3408 | Zinc, Dissolved | μg/l | 41 | 60 | 110 | 130 | 44 | 120 | 110 | 110 | 110 | 110 |
| 3409 | Chromium, Dissolved | μg/l | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 |
| 3410 | Nickel, Dissolved | μg/l | 0.88 | 1.9 | 2 | 2.2 | 2.2 | 2.2 | 1.7 | 1.7 | 2.2 | 1.9 |
| 3878 | Nickel : BLM Bioavailable | μg/l | 0.45 | 1.01 | 0.89 | 0.99 | 1.1 | 1.1 | ||||
| 4820 | Manganese : BLM Bioavailable | μg/l | 15.1 | 34.9 | 14 | 21 | 19 | 29 | ||||
| 4821 | Copper : BLM Bioavailable | μg/l | 0.18 | 0.2 | 0.19 | 0.22 | 0.26 | 0.23 | ||||
| 4822 | Zinc : BLM Bioavailable | μg/l | 27.8 | 34.6 | 60 | 81 | 26 | 72 | ||||
| 6037 | Aluminium, Dissolved | μg/l | < 10 | 10 | < 10 | |||||||
| 6396 | Turbidity | ntu | 5.8 | |||||||||
| 6450 | Copper, Dissolved | μg/l | 0.72 | 1.4 | 2 | 1.6 | 2 | 1.6 | 1.5 | 1.1 | 1.4 | 1.1 |
| 6458 | Manganese, Dissolved | μg/l | 16 | 37 | 24 | 39 | 26 | 38 | ||||
| 6460 | Iron, Dissolved | μg/l | 59 | 72 | 74 | 57 | 88 | 90 |