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sampling point
The Postern Somerhill Stream

Description THE POSTERN TONBRIDGE SOMERHILL STREAM
Sampling point ID SO-E0000768
Type Freshwater – Rivers
Status open
Location easting northing: 560659 146139
lat lon: 51.191889, 0.297768
Area Kent And South London
Sub-Area L&W Kent And East Sussex Ksl
Summary 223 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.

43 determinands have been measured at this site
  • 4-nonPhenol
  • Alky pH 4.5
  • Ammonia(N)
  • BOD ATU
  • C - Org Filt
  • COPA
  • Ca Filtered
  • Calcium - Ca
  • Cd Filtered
  • Chloride Ion
  • Cond @ 20C
  • Cond @ 25C
  • Copper - Cu
  • Cr- Filtered
  • Cu BLM Bio
  • Cu Filtered
  • DEHP
  • Fe- Filt
  • Hardness
  • Magnesium-Mg
  • Mn BLM Bio
  • Mn- Filtered
  • N Oxidised
  • NH3 un-ion
  • Ni BLM Bio
  • Ni- Filtered
  • Nitrate-N
  • Nitrite-N
  • O Diss %sat
  • Orthophospht
  • Oxygen Diss
  • Pb BLM Bio
  • Pb Filtered
  • Sld Sus@105C
  • Temp Water
  • TriBT Cation
  • Triclosan
  • TurbidityNTU
  • Zinc - as Zn
  • Zn BLM Bio
  • Zn- Filtered
  • pH
  • ptOctylPheno

Sampling results

Displaying the twenty most recent samples. You can see all 223 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 1 Sep 2022 to 2 Aug 2024

NotationDeterminandUnits 1 Sep
2022
08:29
14 Oct
2022
11:43
3 Nov
2022
08:31
1 Dec
2022
09:56
17 Jan
2023
09:13
7 Feb
2023
09:22
3 Mar
2023
09:12
7 Jun
2024
10:07
3 Jul
2024
13:07
2 Aug
2024
10:38
0061pH7.797.727.517.647.57.637.577.717.617.44
0076Temperature of Water°C16.713.313.19.66.26.16.613.414.918.9
0077Conductivity at 25 Cμs/cm888698343618501703797768765568
0111Ammoniacal Nitrogen as Nmg/l< 0.03< 0.030.10.130.280.140.084< 0.03< 0.030.091
0116Nitrogen, Total Oxidised as Nmg/l185.7126.91821232315
0117Nitrate as Nmg/l185.68126.8317.920.9232314.9
0118Nitrite as Nmg/l0.0190.0220.0230.0480.0750.0980.110.030.0280.059
0119Ammonia un-ionised as Nmg/l< 0.00056< 0.000370.000750.001020.001230.000820.00045< 0.00036< 0.000320.0009
0162Alkalinity to pH 4.5 as CaCO3mg/l130946294837070707275
0180Orthophosphate, reactive as Pmg/l0.620.610.310.330.180.390.50.610.620.43
6396Turbidityntu9.94.32.4
9901Oxygen, Dissolved, % Saturation%73.185.296.373.894.492.193.789.691.380.4
9924Oxygen, Dissolved as O2mg/l7.098.910.18.3911.711.411.59.339.27.45

Samples from 2 Nov 2021 to 11 Aug 2022

NotationDeterminandUnits 2 Nov
2021
14:25
1 Dec
2021
14:12
10 Jan
2022
11:11
2 Feb
2022
08:59
1 Mar
2022
13:41
4 Apr
2022
14:40
9 May
2022
09:20
8 Jun
2022
11:44
7 Jul
2022
11:04
11 Aug
2022
11:35
0061pH7.717.567.847.727.697.777.877.77.97.71
0076Temperature of Water°C10.89.66.28.79.78.511.315.216.418
0077Conductivity at 25 Cμs/cm588814629797875815859775919926
0111Ammoniacal Nitrogen as Nmg/l0.0471.10.0540.120.0810.0460.0560.0440.0410.035
0116Nitrogen, Total Oxidised as Nmg/l12191021151626202318
0117Nitrate as Nmg/l1218.59.9720.914.915.925.9202318
0118Nitrite as Nmg/l0.030.510.0330.140.0650.0510.0560.0410.0330.022
0119Ammonia un-ionised as Nmg/l0.000470.007150.000520.001050.000710.000450.000840.00060.000950.0006
0135Solids, Suspended at 105 Cmg/l8.76.2129.18.1
0162Alkalinity to pH 4.5 as CaCO3mg/l9099969092888492120150
0180Orthophosphate, reactive as Pmg/l0.410.770.381.10.630.561.20.9310.9
6396Turbidityntu5.64.39.72.43.29.61344.63.4
9901Oxygen, Dissolved, % Saturation%95.275.3100.291.388.397.793.483.775.772.5
9924Oxygen, Dissolved as O2mg/l10.58.5612.410.61011.410.28.387.396.85