sampling point
Pymmes Brook Above Salmon Brook
| Description | PYMMES BROOK ABOVE SALMON BROOK |
|---|---|
| Sampling point ID | TH-PLER0110 |
| Type | Freshwater – Rivers |
| Status | open |
| Location |
easting northing: 535435 192054 lat lon: 51.611029, -0.045449 |
| Area | Hertfordshire And North London |
| Sub-Area | L&W Herts & North London |
| Summary | 259 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.
28 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
- Chloride Ion
- Cond @ 25C
- Fluoranthene
- Ind123pyrene
- N Oxidised
- NH3 un-ion
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Orthophospht
- Oxygen Diss
- SI-GQA
- Temp Water
- Triclosan
- Type of Flow
- pH
- pH in-situ
- ptOctylPheno
Sampling results
Displaying the twenty most recent samples. You can see all 259 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 1 Aug 2023 to 15 Jul 2024
Samples from 15 Nov 2022 to 11 Jul 2023
| Notation | Determinand | Units | 15 Nov 2022 12:32 | 18 Nov 2022 13:24 | 7 Dec 2022 12:20 | 31 Jan 2023 13:49 | 24 Feb 2023 11:54 | 6 Mar 2023 14:20 | 2 Jun 2023 13:47 | 15 Jun 2023 12:29 | 28 Jun 2023 10:08 | 11 Jul 2023 14:08 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.77 | 8.11 | 7.83 | 7.41 | 7.79 | 7.86 | 8.08 | 7.85 | 7.79 | 7.83 | |
| 0076 | Temperature of Water | °C | 13.1 | 12 | 7.7 | 9.1 | 7.4 | 7.1 | 14.8 | 18.8 | 18.6 | 18.8 |
| 0077 | Conductivity at 25 C | μs/cm | 592 | 694 | 873 | 882 | 1013 | 923 | 908 | 890 | 922 | 865 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.81 | 0.19 | 0.52 | 1.1 | 4 | 1 | 0.2 | 2.3 | 1.1 | 0.8 |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 2.8 | 4.9 | 4.6 | 5 | 4.6 | 5 | 3.7 | 1.2 | 3.2 | 3.5 |
| 0117 | Nitrate as N | mg/l | 2.53 | 4.81 | 4.29 | 4.75 | 4.36 | 4.85 | 3.4 | 1.03 | 2.78 | 3.13 |
| 0118 | Nitrite as N | mg/l | 0.27 | 0.093 | 0.31 | 0.25 | 0.24 | 0.15 | 0.3 | 0.17 | 0.42 | 0.37 |
| 0119 | Ammonia un-ionised as N | mg/l | 0.011 | 0.00401 | 0.00544 | 0.00489 | 0.0374 | 0.0107 | 0.00518 | 0.0569 | 0.0234 | 0.0189 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 160 | 170 | 240 | 220 | 250 | 250 | 250 | 260 | 250 | 230 |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.3 | 0.23 | 0.45 | < 0.01 | 0.69 | 0.6 | 0.76 | 1 | 0.88 | 0.68 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 68.1 | 86.9 | 64.5 | 78.2 | 56.3 | 72.7 | 96.7 | 36.1 | 30 | 70.4 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 7.14 | 9.34 | 7.68 | 9 | 6.76 | 8.79 | 9.77 | 3.35 | 2.8 | 6.54 |