sampling point
Pymmes Brook R.H. Channel At Ferry Lane
| Description | PYMMES BROOK R.H. CHANNEL AT FERRY LANE |
|---|---|
| Sampling point ID | TH-PLER0117 |
| Type | Freshwater – Rivers |
| Status | open |
| Location |
easting northing: 534707 189464 lat lon: 51.58793, -0.05695 |
| Area | Hertfordshire And North London |
| Sub-Area | L&W Herts & North London |
| Summary | 274 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.
51 determinands have been measured at this site
- 4-nonPhenol
- Action taken
- Alky pH 4.5
- Ammonia(N)
- AmoniaTotYSI
- B-[a]-pyrene
- B-[b]-fluora
- B-[ghi]-pery
- B-[k]-fluora
- BOD ATU
- C - Org Filt
- Cd Filtered
- Chloride Ion
- ColformsPre
- Cond @ 20C
- Cond @ 25C
- Cu Filtered
- DEHP
- F Coli Pre
- Fluoranthene
- Hg Filtered
- Ind123pyrene
- LCMS
- MR Screen
- N Oxidised
- NH3 un-ion
- Ni- Filtered
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Orthophospht
- Oxygen Diss
- PBDE 100
- PBDE 153
- PBDE 154
- PBDE 28
- PBDE 47
- PBDE 99
- SI-GQA
- Sld Sus@105C
- StrepF PMF
- Temp Water
- TriBT Cation
- Triclosan
- TurbidityNTU
- Type of Flow
- Zinc - as Zn
- Zn- Filtered
- pH
- pH in-situ
- ptOctylPheno
Sampling results
Displaying the twenty most recent samples. You can see all 274 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 1 Jun 2023 to 1 Mar 2024
| Notation | Determinand | Units | 1 Jun 2023 11:19 | 6 Jul 2023 12:57 | 8 Aug 2023 11:01 | 12 Sep 2023 09:28 | 11 Oct 2023 15:15 | 1 Nov 2023 12:02 | 14 Dec 2023 11:01 | 4 Jan 2024 09:59 | 1 Feb 2024 12:45 | 1 Mar 2024 10:54 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.33 | 7.19 | 7.54 | 7.46 | 7.3 | 7.25 | 7.29 | 7.39 | 7.35 | 7.65 | |
| 0076 | Temperature of Water | °C | 18 | 20.4 | 18.9 | 21.3 | 21 | 16.2 | 11.9 | 11.6 | 13.4 | 9.4 |
| 0077 | Conductivity at 25 C | μs/cm | 1106 | 925 | 990 | 1061 | 1100 | 756 | 843 | 792 | 1064 | 552 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.055 | 0.11 | 0.56 | 1 | 0.51 | 0.24 | 0.16 | 0.12 | 0.26 | |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 28 | 17 | 18 | 16 | 23 | 11 | 14 | 12 | 24 | 5.3 |
| 0117 | Nitrate as N | mg/l | 28 | 17 | 17.9 | 15.9 | 22.9 | 11 | 14 | 12 | 23.9 | 5.24 |
| 0118 | Nitrite as N | mg/l | 0.027 | 0.026 | 0.1 | 0.082 | 0.063 | 0.046 | 0.046 | 0.044 | 0.071 | 0.063 |
| 0119 | Ammonia un-ionised as N | mg/l | 0.00039 | 0.00068 | 0.00692 | 0.0123 | 0.00426 | 0.00125 | 0.00067 | 0.00061 | 0.00205 | |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 160 | 140 | 170 | 190 | 160 | 150 | 170 | 180 | 170 | 120 |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.82 | 0.58 | 0.69 | 0.9 | 0.81 | 0.6 | 0.54 | 0.44 | 0.73 | 0.24 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 106 | 61.9 | 101.3 | 63.4 | 107.8 | 83.9 | 86.9 | 88.2 | 91.2 | 88.7 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 10 | 5.57 | 9.39 | 5.61 | 9.59 | 8.22 | 9.37 | 9.57 | 9.5 | 10.1 |
Samples from 21 Nov 2019 to 31 May 2023
| Notation | Determinand | Units | 21 Nov 2019 11:53 | 18 Dec 2019 11:25 | 24 Jan 2020 11:00 | 5 Feb 2020 11:42 | 15 Jun 2021 14:43 | 18 Jun 2021 15:06 | 16 Jul 2021 13:45 | 26 Aug 2021 13:56 | 21 Apr 2023 11:31 | 31 May 2023 10:13 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.22 | 7.29 | 7.45 | 7.37 | 7.76 | 7.45 | 8.35 | 7.39 | 7.3 | 7.44 | |
| 0076 | Temperature of Water | °C | 13.9 | 11.4 | 13.1 | 13 | 23.6 | 17.5 | 20 | 20.6 | 14.3 | 17.8 |
| 0077 | Conductivity at 25 C | μs/cm | 1090 | 823 | 1077 | 1035 | 1110 | 522 | 715 | 1078 | 1016 | 1108 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.306 | 0.13 | 0.39 | 0.32 | 0.48 | 3 | 0.065 | 0.42 | 0.41 | 0.05 |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 25.7 | 13 | 23 | 23 | 23 | 6.6 | 4.6 | 23 | 23 | 26 |
| 0117 | Nitrate as N | mg/l | 25.6 | 13 | 22.9 | 22.9 | 22.9 | 6.39 | 4.5 | 22.9 | 22.9 | 26 |
| 0118 | Nitrite as N | mg/l | 0.0595 | 0.039 | 0.08 | 0.065 | 0.074 | 0.21 | 0.1 | 0.099 | 0.069 | 0.035 |
| 0119 | Ammonia un-ionised as N | mg/l | 0.00126 | 0.00052 | 0.00256 | 0.00173 | 0.0137 | 0.0272 | 0.00245 | 0.00418 | 0.00208 | 0.00045 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 140 | 160 | 160 | 160 | 160 | 110 | 190 | 170 | 160 | 150 |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.519 | 0.21 | 0.58 | 0.58 | 0.74 | 0.54 | 0.29 | 0.7 | 0.79 | 0.72 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 88.4 | 87.7 | 80.4 | 90.6 | 123.8 | 75.9 | 94.1 | 102.4 | 84.5 | 99.8 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 9.11 | 9.56 | 8.43 | 9.52 | 10.5 | 7.24 | 8.53 | 9.18 | 8.63 | 9.46 |