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sampling point
R.Blackwater Appleford

Description R.BLACKWATER APPLEFORD
Sampling point ID AN-BL03
Type Freshwater – Rivers
Status open
Location easting northing: 584473 215824
lat lon: 51.810599, 0.674606
Area Essex Norfolk And Suffolk
Sub-Area Essex Team Sub Area
Summary 251 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
  • Alky pH 4.5
  • Aluminium-Al
  • Ammonia(N)
  • BOD ATU
  • Bentazone
  • CHLOR A
  • CHLOROPHYLL
  • COD as O2
  • Cadmium - Cd
  • Chloride Ion
  • Chromium -Cr
  • Cond @ 20C
  • Cond @ 25C
  • Copper - Cu
  • GCMS S-Vol
  • Lead - as Pb
  • N Inorganic
  • N Oxidised
  • NATGRIDREF
  • NH3 un-ion
  • Nickel - Ni
  • Nitrate-N
  • Nitrite-N
  • O Diss %sat
  • Orthophospht
  • Oxygen Diss
  • SiO2 Rv
  • Sld Sus@105C
  • TBTCationDWT
  • Temp Water
  • TriBT Cation
  • Turbidity
  • TurbidityNTU
  • Zinc - as Zn
  • pH
  • pH Inst unit

Sampling results

Displaying the twenty most recent samples. You can see all 251 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 17 Oct 2023 to 16 Jul 2024

NotationDeterminandUnits17 Oct
2023
09:50
23 Oct
2023
09:29
20 Nov
2023
09:07
5 Dec
2023
09:53
17 Jan
2024
09:09
20 Mar
2024
13:52
18 Apr
2024
14:54
16 May
2024
14:40
20 Jun
2024
13:34
16 Jul
2024
15:45
0061pH7.937.867.977.938.098.158.598.118.138.28
0076Temperature of Water°C1110.69.45.92.912.411.815.616.817.6
0077Conductivity at 25 Cμs/cm801650700864872813915837892777
0085BOD : 5 Day ATUmg/l1.32.11.11.3< 3
0111Ammoniacal Nitrogen as Nmg/l< 0.03< 0.03< 0.030.140.140.031< 0.030.047< 0.03< 0.03
0116Nitrogen, Total Oxidised as Nmg/l8.6151211119.1109.6118.9
0117Nitrate as Nmg/l8.58151210.910.99.079.969.54118.85
0118Nitrite as Nmg/l0.0190.0320.030.0750.0660.0340.040.0630.0440.046
0119Ammonia un-ionised as Nmg/l< 0.0005< 0.00042< 0.000490.001610.001510.00067< 0.000620.00129< 0.0009< 0.00095
0162Alkalinity to pH 4.5 as CaCO3mg/l220190230240270270250260260220
0180Orthophosphate, reactive as Pmg/l0.220.180.120.160.160.140.170.260.230.26
9901Oxygen, Dissolved, % Saturation%88.387.291.889.991.710113296.495.397.6
9924Oxygen, Dissolved as O2mg/l9.729.6910.511.212.410.814.39.579.229.29

Samples from 21 Nov 2019 to 13 Sep 2023

NotationDeterminandUnits21 Nov
2019
14:03
2 Dec
2019
13:56
6 Jan
2020
09:07
3 Feb
2020
11:21
2 Mar
2020
13:18
26 Apr
2023
12:17
25 May
2023
11:22
29 Jun
2023
14:47
8 Aug
2023
10:51
13 Sep
2023
08:43
0061pH7.988.038.028.018.078.258.17.918.257.81
0076Temperature of Water°C5.956.98.16.610.514.919.41617.1
0077Conductivity at 25 Cμs/cm995978921860727839906867866961
0085BOD : 5 Day ATUmg/l1.21.11.11.11.11.6< 1
0111Ammoniacal Nitrogen as Nmg/l< 0.030.0720.110.0760.061< 0.03< 0.03< 0.030.03< 0.03
0116Nitrogen, Total Oxidised as Nmg/l10.3121314149.7117.67.49.7
0117Nitrate as Nmg/l10.211.912.913.9149.66117.567.389.67
0118Nitrite as Nmg/l0.06840.0890.0980.0830.0350.0380.040.0380.020.029
0119Ammonia un-ionised as Nmg/l< 0.000390.000910.00160.001210.00087< 0.00057< 0.00078< 0.000890.00085< 0.0006
0162Alkalinity to pH 4.5 as CaCO3mg/l261260260250220270260240240260
0180Orthophosphate, reactive as Pmg/l0.2060.170.160.150.110.120.190.270.250.22
9901Oxygen, Dissolved, % Saturation%81.390.395.295.399.1108.1102.579.685.374.5
9924Oxygen, Dissolved as O2mg/l10.111.511.611.212.11210.37.318.47.17