sampling point
Ravensbourne ( Rom ) At A125
| Description | RAVENSBOURNE ( ROM ) AT A125 |
|---|---|
| Sampling point ID | TH-PRGR0100 |
| Type | Freshwater – Unspecified |
| Status | open |
| Location |
easting northing: 552000 186150 lat lon: 51.553759, 0.191049 |
| Area | Hertfordshire And North London |
| Sub-Area | L&W Herts & North London |
| Summary | 133 samples taken between 2024 and 2002 |
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.
16 determinands have been measured at this site
- Alky pH 4.5
- Ammonia(N)
- AmoniaTotYSI
- BOD ATU
- Chloride Ion
- Cond @ 25C
- N Oxidised
- NH3 un-ion
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Orthophospht
- Oxygen Diss
- Temp Water
- Type of Flow
- pH
Sampling results
Displaying the twenty most recent samples. You can see all 133 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 7 Sep 2023 to 1 Aug 2024
| Notation | Determinand | Units | 7 Sep 2023 10:31 | 11 Oct 2023 10:22 | 23 Nov 2023 11:38 | 8 Dec 2023 11:28 | 11 Jan 2024 10:14 | 7 Feb 2024 09:53 | 11 Mar 2024 10:06 | 7 Jun 2024 12:29 | 10 Jul 2024 12:04 | 1 Aug 2024 12:40 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 8.64 | 7.85 | 7.58 | 7.7 | 7.86 | 7.68 | 7.67 | 8.56 | 7.54 | 7.91 | |
| 0076 | Temperature of Water | °C | 22.1 | 17.4 | 10.1 | 7 | 3 | 9 | 9.7 | 18.8 | 18.2 | 25 |
| 0077 | Conductivity at 25 C | μs/cm | 616 | 718 | 707 | 805 | 797 | 517 | 784 | 730 | 351 | 682 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.083 | 0.41 | 0.69 | 0.37 | 0.43 | 0.49 | 0.44 | 0.23 | 0.69 | 0.5 |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | < 0.2 | 0.59 | 2.2 | 2.4 | 4.5 | 1.4 | 3.1 | 0.23 | 0.95 | 0.3 |
| 0117 | Nitrate as N | mg/l | 0.161 | 0.513 | 2.05 | 2.3 | 4.41 | 1.33 | 3 | 0.195 | 0.82 | 0.239 |
| 0118 | Nitrite as N | mg/l | 0.039 | 0.077 | 0.15 | 0.1 | 0.093 | 0.067 | 0.1 | 0.035 | 0.13 | 0.061 |
| 0119 | Ammonia un-ionised as N | mg/l | 0.00364 | 0.00916 | 0.00488 | 0.00273 | 0.00341 | 0.00401 | 0.00371 | 0.00795 | 0.0081 | 0.0221 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 130 | 170 | 190 | 160 | 200 | 88 | 190 | 200 | 93 | 190 |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.015 | 0.092 | 0.16 | 0.13 | 0.17 | 0.13 | 0.087 | 0.45 | 0.49 | |
| 9901 | Oxygen, Dissolved, % Saturation | % | 144.4 | 73.9 | 60.4 | 78 | 79.4 | 90.3 | 77.6 | 118.1 | 61.5 | 57.7 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 12.6 | 7.06 | 6.79 | 9.46 | 10.7 | 10.4 | 8.81 | 11 | 5.78 | 4.76 |
Samples from 16 Nov 2022 to 9 Aug 2023
| Notation | Determinand | Units | 16 Nov 2022 12:04 | 15 Dec 2022 11:27 | 24 Feb 2023 09:50 | 13 Mar 2023 12:26 | 27 Mar 2023 11:13 | 19 Apr 2023 10:50 | 6 Jun 2023 12:46 | 15 Jun 2023 13:26 | 7 Jul 2023 11:33 | 9 Aug 2023 12:02 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.92 | 7.63 | 7.94 | 7.88 | 7.83 | 7.88 | 7.74 | 7.96 | 7.64 | 7.74 | |
| 0076 | Temperature of Water | °C | 12.2 | 4.1 | 7.8 | 10.8 | 9.8 | 12.2 | 18 | 26.1 | 20.8 | 19 |
| 0077 | Conductivity at 25 C | μs/cm | 736 | 1333 | 979 | 849 | 503 | 722 | 913 | 963 | 887 | 507 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.73 | 1.2 | 0.78 | 0.38 | 0.27 | 0.26 | 2.7 | 2.5 | 0.96 | 0.95 |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 2.1 | 3.4 | 3.1 | 3.6 | 2.2 | 3 | 0.4 | 1.1 | 0.51 | 0.8 |
| 0117 | Nitrate as N | mg/l | 1.88 | 3.18 | 2.95 | 3.52 | 2.14 | 2.91 | 0.309 | 0.4 | 0.29 | 0.63 |
| 0118 | Nitrite as N | mg/l | 0.22 | 0.22 | 0.15 | 0.083 | 0.06 | 0.095 | 0.091 | 0.7 | 0.22 | 0.17 |
| 0119 | Ammonia un-ionised as N | mg/l | 0.0131 | 0.00609 | 0.0106 | 0.0056 | 0.0033 | 0.00425 | 0.0492 | 0.133 | 0.0171 | 0.0186 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 170 | 200 | 230 | 190 | 110 | 180 | 250 | 240 | 120 | 130 |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.26 | 0.28 | 0.17 | 0.12 | 0.1 | 0.078 | 0.59 | 0.33 | 0.69 | 0.3 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 70.4 | 65.6 | 83.5 | 87.7 | 83.1 | 88.2 | 44.4 | 52.3 | 55.5 | 59.3 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 7.54 | 8.57 | 9.92 | 9.7 | 9.41 | 9.44 | 4.19 | 4.23 | 4.96 | 5.49 |