sampling point
D/S Tonbridge Postern Lane
| Description | DOWNSTREAM TONBRIDGE POSTERN LANE BOTANY STREAM |
|---|---|
| Sampling point ID | SO-E0000779 |
| Type | Freshwater – Rivers |
| Status | open |
| Location |
easting northing: 560243 146447 lat lon: 51.194773, 0.291957 |
| Area | Kent And South London |
| Sub-Area | L&W Medway And Rother Ksl |
| Summary | 252 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.
46 determinands have been measured at this site
- 12-DCA
- Alky pH 4.5
- Ammonia(N)
- BOD ATU
- C - Org Filt
- CHLOROPHYLL
- COPA
- Ca Filtered
- Cadmium - Cd
- Calcium - Ca
- Carbon Tet
- Cd Filtered
- Chloride Ion
- ChlorophyllA
- ChlorophyllB
- Chlorophylls
- Cond @ 20C
- Cond @ 25C
- Copper - Cu
- Cr- Filtered
- Cu Filtered
- DataHandling
- Fe- Filt
- Hardness
- Magnesium-Mg
- Mercury - Hg
- Mg Filtered
- Mn- Filtered
- N Oxidised
- NH3 un-ion
- NO FLOW/SAMP
- Ni- Filtered
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Orthophospht
- Oxygen Diss
- Pb Filtered
- Phaeophytn-A
- Phaeophytn-B
- Sld Sus@105C
- Temp Water
- TurbidityNTU
- Zinc - as Zn
- Zn- Filtered
- pH
Sampling results
Displaying the twenty most recent samples. You can see all 252 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 5 Jun 2023 to 4 Mar 2024
| Notation | Determinand | Units | 5 Jun 2023 16:46 | 12 Jul 2023 09:20 | 2 Aug 2023 12:08 | 20 Sep 2023 14:39 | 13 Oct 2023 10:27 | 1 Nov 2023 13:11 | 1 Dec 2023 12:04 | 16 Jan 2024 12:50 | 8 Feb 2024 15:04 | 4 Mar 2024 15:21 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.45 | 7.3 | 7.67 | 7.43 | 7.44 | 7.45 | 7.57 | 7.55 | 7.75 | 7.47 | |
| 0106 | Cadmium, Dissolved | μg/l | 0.012 | 0.01 | 0.013 | 0.013 | 0.016 | 0.017 | 0.015 | 0.019 | 0.018 | 0.022 |
| 0235 | Magnesium, Dissolved | mg/l | 5.5 | 5.5 | 5.2 | 5.5 | 5.3 | 3.9 | 4.4 | 4.6 | 4.1 | 3.7 |
| 0239 | Calcium, Dissolved | mg/l | 46 | 47 | 46 | 45 | 45 | 42 | 40 | 42 | 41 | 37 |
| 0301 | Carbon, Organic, Dissolved as C :- {DOC} | mg/l | 4.4 | 4.9 | 5.1 | 5 | 4.7 | 8.4 | 5.3 | 4.6 | 6.1 | 7.1 |
Samples from 11 Aug 2022 to 24 May 2023
| Notation | Determinand | Units | 11 Aug 2022 11:29 | 1 Sep 2022 08:41 | 14 Oct 2022 11:28 | 3 Nov 2022 08:18 | 1 Dec 2022 09:41 | 17 Jan 2023 09:00 | 7 Feb 2023 09:11 | 3 Mar 2023 09:21 | 3 Apr 2023 15:22 | 24 May 2023 11:04 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.72 | 7.66 | 7.83 | 7.45 | 7.34 | 7.57 | 7.63 | 7.72 | 7.36 | 7.76 | |
| 0076 | Temperature of Water | °C | 20.5 | 17.9 | 12.1 | 12.9 | 9.4 | 5.6 | 6.2 | 5.8 | ||
| 0077 | Conductivity at 25 C | μs/cm | 640 | 517 | 535 | 317 | 345 | 283 | 431 | 467 | ||
| 0085 | BOD : 5 Day ATU | mg/l | < 3 | < 6 | 3.4 | 4.4 | 2.1 | 2.1 | 2.7 | 2.9 | ||
| 0106 | Cadmium, Dissolved | μg/l | 0.02 | 0.014 | ||||||||
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.73 | 0.25 | 0.27 | 0.43 | 0.35 | 0.13 | 0.4 | 0.41 | ||
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 7.7 | 7.5 | 3.6 | 4.6 | 3 | 6.9 | 7.1 | |||
| 0117 | Nitrate as N | mg/l | 7.56 | 7.43 | 3.56 | 4.53 | 2.97 | 6.8 | 7.04 | |||
| 0118 | Nitrite as N | mg/l | 0.14 | 0.29 | 0.069 | 0.045 | 0.075 | 0.033 | 0.1 | 0.064 | ||
| 0119 | Ammonia un-ionised as N | mg/l | 0.0153 | 0.00377 | 0.00391 | 0.00278 | 0.00136 | 0.00064 | 0.00237 | 0.0029 | ||
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 120 | 100 | 90 | 67 | 69 | 61 | 74 | 79 | ||
| 0180 | Orthophosphate, reactive as P | mg/l | 0.52 | 0.35 | 0.43 | 0.25 | 0.24 | 0.14 | 0.24 | 0.25 | ||
| 0235 | Magnesium, Dissolved | mg/l | 4 | 5.3 | ||||||||
| 0239 | Calcium, Dissolved | mg/l | 38 | 47 | ||||||||
| 0301 | Carbon, Organic, Dissolved as C :- {DOC} | mg/l | 7.2 | 4.8 | ||||||||
| 6396 | Turbidity | ntu | 6.2 | 7.7 | 10 | 4.2 | ||||||
| 9901 | Oxygen, Dissolved, % Saturation | % | 69.4 | 60.9 | 92.8 | 87.1 | 85.3 | 92.5 | 92.7 | 98.1 | ||
| 9924 | Oxygen, Dissolved as O2 | mg/l | 6.23 | 5.76 | 9.96 | 9.18 | 9.75 | 11.6 | 11.5 | 12.3 |