sampling point
Mayes Brook At Ripple Road
| Description | MAYES BROOK AT RIPPLE ROAD |
|---|---|
| Sampling point ID | TH-PRGR0102 |
| Type | Freshwater – Unspecified |
| Status | open |
| Location |
easting northing: 545950 183920 lat lon: 51.535318, 0.102925 |
| Area | Hertfordshire And North London |
| Sub-Area | L&W Herts & North London |
| Summary | 205 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.
36 determinands have been measured at this site
- 4-nonPhenol
- Action taken
- Alky pH 4.5
- Ammonia(N)
- BOD ATU
- C - Org Filt
- Ca Filtered
- Calcium - Ca
- Cd Filtered
- Chloride Ion
- Cond @ 25C
- Cr- Filtered
- Cu Filtered
- DEHP
- Fe- Filt
- Hardness
- Magnesium-Mg
- Mn- Filtered
- N Oxidised
- NH3 un-ion
- NO FLOW/SAMP
- Ni- Filtered
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Orthophospht
- Oxygen Diss
- Pb Filtered
- SI-GQA
- Sld Sus@105C
- Temp Water
- Triclosan
- Type of Flow
- Zn- Filtered
- pH
- ptOctylPheno
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 1 Sep 2023 to 2 Aug 2024
| Notation | Determinand | Units | 1 Sep 2023 10:36 | 11 Oct 2023 14:34 | 7 Nov 2023 10:22 | 7 Dec 2023 12:39 | 18 Jan 2024 10:55 | 2 Feb 2024 11:34 | 5 Mar 2024 11:09 | 18 Jun 2024 13:19 | 2 Jul 2024 13:31 | 2 Aug 2024 11:45 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.5 | 7.38 | 7.27 | 7.33 | 7.54 | 7.42 | 7.48 | 7.35 | 7.62 | 7.25 | |
| 0076 | Temperature of Water | °C | 17 | 17.2 | 12.4 | 10 | 6.9 | 10.3 | 9.6 | 16.6 | 16.3 | 19 |
| 0077 | Conductivity at 25 C | μs/cm | 695 | 738 | 663 | 783 | 740 | 742 | 548 | 649 | 711 | 661 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.45 | 0.58 | 0.32 | 0.48 | 0.36 | 0.47 | 0.24 | 0.47 | 0.47 | 0.41 |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 6.6 | 6.4 | 6.7 | 6.7 | 8.3 | 8.1 | 4.4 | 6.1 | 6.6 | 6.3 |
| 0117 | Nitrate as N | mg/l | 6.43 | 6.23 | 6.61 | 6.54 | 8.2 | 7.99 | 4.32 | 5.81 | 6.39 | 6.07 |
| 0118 | Nitrite as N | mg/l | 0.17 | 0.17 | 0.094 | 0.16 | 0.1 | 0.11 | 0.078 | 0.29 | 0.21 | 0.23 |
| 0119 | Ammonia un-ionised as N | mg/l | 0.00441 | 0.00439 | 0.00132 | 0.0019 | 0.00183 | 0.00234 | 0.0013 | 0.00318 | 0.00575 | 0.00263 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 180 | 180 | 160 | 150 | 180 | 180 | 140 | 170 | 190 | 160 |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.51 | 0.56 | 0.34 | 0.34 | 0.37 | 0.35 | 0.21 | 0.43 | 0.55 | 0.52 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 45.7 | 64.4 | 54.1 | 61.1 | 65.1 | 66.3 | 71.8 | 46.8 | 74.7 | 38.7 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 4.41 | 6.18 | 5.76 | 6.88 | 7.91 | 7.42 | 8.17 | 4.55 | 7.31 | 3.58 |
Samples from 2 Nov 2022 to 7 Aug 2023
| Notation | Determinand | Units | 2 Nov 2022 13:55 | 7 Dec 2022 11:53 | 18 Jan 2023 09:42 | 3 Feb 2023 12:43 | 16 Mar 2023 11:43 | 28 Apr 2023 10:15 | 9 May 2023 13:37 | 12 Jun 2023 12:23 | 3 Jul 2023 14:29 | 7 Aug 2023 12:25 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.68 | 7.52 | 7.76 | 7.53 | 7.43 | 7.53 | 7.48 | 7.52 | 7.54 | 7.47 | |
| 0076 | Temperature of Water | °C | 14.2 | 9.2 | 5.4 | 10.2 | 10.8 | 12.5 | 16.4 | 18.1 | 16.5 | 17.4 |
| 0077 | Conductivity at 25 C | μs/cm | 587 | 734 | 629 | 790 | 774 | 535 | 445 | 802 | 735 | 677 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.51 | 0.34 | 0.21 | 0.54 | 0.17 | 0.13 | 0.24 | 0.72 | 0.37 | 0.15 |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 4.9 | 6.9 | 6.2 | 8.1 | 5.7 | 4 | 1.9 | 6.3 | 6.5 | 7 |
| 0117 | Nitrate as N | mg/l | 4.79 | 6.77 | 6.15 | 7.99 | 5.63 | 3.92 | 1.85 | 6 | 6.23 | 6.87 |
| 0118 | Nitrite as N | mg/l | 0.11 | 0.13 | 0.051 | 0.11 | 0.072 | 0.085 | 0.052 | 0.3 | 0.27 | 0.13 |
| 0119 | Ammonia un-ionised as N | mg/l | 0.00613 | 0.00196 | 0.00158 | 0.00343 | 0.0009 | 0.00098 | 0.00215 | 0.00802 | 0.00383 | 0.00141 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 160 | 180 | 160 | 180 | 160 | 130 | 120 | 200 | 180 | 170 |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.46 | 0.35 | 0.24 | 0.37 | 0.19 | 0.14 | 0.2 | 0.64 | 0.61 | 0.71 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 61.8 | 78 | 85.3 | 78 | 88.9 | 77.5 | 78.9 | 69.4 | 46 | 57.4 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 6.33 | 8.96 | 10.8 | 8.75 | 9.83 | 8.24 | 7.7 | 6.54 | 4.48 | 5.49 |