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sampling point
R.Colne Lexden Bridge

Description R.COLNE LEXDEN BRIDGE
Sampling point ID AN-CL0185
Type Freshwater – Rivers
Status open
Location easting northing: 597267 225663
lat lon: 51.894586, 0.865567
Area Essex Norfolk And Suffolk
Sub-Area Essex Team Sub Area
Summary 66 samples taken between 2024 and 2018

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)
  • BOD ATU
  • CHLOROPHYLL
  • Cond @ 25C
  • N Oxidised
  • NH3 un-ion
  • Nitrate-N
  • Nitrite-N
  • O Diss %sat
  • Orthophospht
  • Oxygen Diss
  • Sld Sus@105C
  • Temp Water
  • TurbidityNTU
  • pH

Sampling results

Displaying the twenty most recent samples. You can see all 66 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 1 Sep 2023 to 16 Jul 2024

NotationDeterminandUnits 1 Sep
2023
08:37
5 Oct
2023
11:35
6 Nov
2023
09:44
14 Nov
2023
10:53
7 Dec
2023
09:57
2 Jan
2024
13:47
2 Feb
2024
10:11
6 Mar
2024
11:17
28 Jun
2024
16:57
16 Jul
2024
09:57
0061pH7.67.67.797.867.957.958.018.137.687.89
0076Temperature of Water°C1514.88.3104.99.97.18.31816.1
0077Conductivity at 25 Cμs/cm904874593646734910813703850666
0085BOD : 5 Day ATUmg/l< 31.9
0111Ammoniacal Nitrogen as Nmg/l0.0390.0350.0450.0910.0870.140.230.0840.0320.29
0116Nitrogen, Total Oxidised as Nmg/l5.45.6108116.68.46.76.95.5
0117Nitrate as Nmg/l5.355.559.957.9310.96.548.296.646.855.41
0118Nitrite as Nmg/l0.050.0490.0470.0710.0590.0620.110.0620.0520.089
0119Ammonia un-ionised as Nmg/l0.000410.000370.000450.001210.000970.002260.003390.001350.000510.00645
0135Solids, Suspended at 105 Cmg/l4.54.821329.31608.4104.313
0162Alkalinity to pH 4.5 as CaCO3mg/l220210190190230180240230220180
0180Orthophosphate, reactive as Pmg/l0.90.760.170.180.180.160.330.160.540.48
6396Turbidityntu1.31.420306.115049.328
7887Chlorophyll : Acetone Extractμg/l3.32.21.941.53.62.82.54.87.7
9901Oxygen, Dissolved, % Saturation%74.478.27889.290.291.894.797.69979
9924Oxygen, Dissolved as O2mg/l7.487.99.161011.510.411.511.59.357.76

Samples from 7 Oct 2022 to 7 Aug 2023

NotationDeterminandUnits 7 Oct
2022
09:54
2 Nov
2022
12:00
2 Dec
2022
10:06
18 Jan
2023
09:16
1 Feb
2023
12:58
2 Mar
2023
08:48
28 Apr
2023
15:13
5 Jun
2023
10:48
3 Jul
2023
14:59
7 Aug
2023
14:59
0061pH7.577.657.878.187.978.18.237.757.557.74
0076Temperature of Water°C12.7127.92.56.24.812.214.216.515.9
0077Conductivity at 25 Cμs/cm877879813696849866792899924720
0111Ammoniacal Nitrogen as Nmg/l0.0410.040.0510.0680.110.110.0430.0940.0550.055
0116Nitrogen, Total Oxidised as Nmg/l5.78.71513108.26.66.85.25.9
0117Nitrate as Nmg/l5.648.6514.912.99.888.166.556.725.155.83
0118Nitrite as Nmg/l0.0560.0550.0770.0590.120.0450.0470.080.0460.067
0119Ammonia un-ionised as Nmg/l0.000340.000380.000590.000710.001420.001370.000920.001320.000580.00086
0135Solids, Suspended at 105 Cmg/l74.95.1153.6674.13.28.5
0162Alkalinity to pH 4.5 as CaCO3mg/l220220220210240240240240220190
0180Orthophosphate, reactive as Pmg/l0.870.670.280.160.340.410.330.7410.46
6396Turbidityntu3.21.81.1< 17.2
7887Chlorophyll : Acetone Extractμg/l7.431.91.91.2153.73.67.1
9901Oxygen, Dissolved, % Saturation%77.975.888.297.397.592.2105.882.285.769.1
9924Oxygen, Dissolved as O2mg/l8.248.1510.513.312.111.811.38.418.356.82