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sampling point
R.Witham Aubourn Bridge

Description R.WITHAM AUBOURN BRIDGE
Sampling point ID AN-WITHC
Type Freshwater – Rivers
Status open
Location easting northing: 491841 362784
lat lon: 53.15427, -0.628044
Area Lincolnshire And Northamptonshire
Sub-Area North & South Team Sub Area
Summary 262 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
  • Ammonia(N)
  • BOD ATU
  • C - Org Filt
  • CHLOR A
  • CHLOROPHYLL
  • COD as O2
  • Calcium - Ca
  • Chloride Ion
  • Cond @ 20C
  • Cond @ 25C
  • Cu Filtered
  • Hardness
  • Magnesium-Mg
  • N Inorganic
  • N Oxidised
  • NH3 un-ion
  • NO FLOW/SAMP
  • Nitrate-N
  • Nitrite-N
  • O Diss %sat
  • O Diss% Satn
  • O Dissolved
  • OdourPhenolc
  • Oil & Grs Vs
  • Orthophospht
  • Oxygen Diss
  • Phenol Odour
  • SiO2 Rv
  • Sld Sus@105C
  • Temp Water
  • Turbidity
  • TurbidityNTU
  • Zinc - as Zn
  • pH
  • pH Inst unit

Sampling results

Displaying the twenty most recent samples. You can see all 262 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 16 Oct 2023 to 16 Jul 2024

NotationDeterminandUnits16 Oct
2023
13:55
20 Nov
2023
14:05
13 Dec
2023
09:15
15 Jan
2024
11:44
19 Feb
2024
10:30
18 Mar
2024
09:48
17 Apr
2024
13:25
13 May
2024
11:11
17 Jun
2024
09:18
16 Jul
2024
11:36
0061pH7.718.047.888.27.837.988.528.318.388.15
0076Temperature of Water°C10.410.17.64.51010.31118.515.516.4
0077Conductivity at 25 Cμs/cm858764649888562724948891853880
0085BOD : 5 Day ATUmg/l1.11.1< 21.42.2< 31.51.51.51.8
0111Ammoniacal Nitrogen as Nmg/l0.047< 0.030.120.0610.110.081< 0.030.036< 0.030.036
0116Nitrogen, Total Oxidised as Nmg/l149.98.7136.58.19.798.26.5
0117Nitrate as Nmg/l13.99.848.6212.96.468.029.688.968.176.48
0118Nitrite as Nmg/l0.0570.0560.0770.0630.0430.080.0250.0420.0310.024
0119Ammonia un-ionised as Nmg/l0.00046< 0.000550.00140.000740.001360.00144< 0.000590.00122< 0.000820.00105
0162Alkalinity to pH 4.5 as CaCO3mg/l200200180220160190210210210210
0180Orthophosphate, reactive as Pmg/l0.190.130.0920.110.0870.10.10.150.150.28
9901Oxygen, Dissolved, % Saturation%77.889.686.39389.193.1114.8100.694.887.6
9924Oxygen, Dissolved as O2mg/l8.6810.110.3121010.412.69.49.438.55

Samples from 6 Dec 2022 to 4 Sep 2023

NotationDeterminandUnits 6 Dec
2022
10:32
17 Jan
2023
10:34
8 Feb
2023
10:11
13 Mar
2023
09:02
5 Apr
2023
11:38
17 May
2023
09:02
16 Jun
2023
10:21
20 Jul
2023
10:53
10 Aug
2023
07:55
4 Sep
2023
10:38
0061pH8.068.068.338.058.398.318.38.067.948
0076Temperature of Water°C6.43.63.38.19.613.720.317.317.417.5
0077Conductivity at 25 Cμs/cm898832925824919877895857964905
0085BOD : 5 Day ATUmg/l1.2< 1< 11.21.61.2< 11.11.2< 1
0111Ammoniacal Nitrogen as Nmg/l< 0.030.036< 0.030.03< 0.03< 0.03< 0.03< 0.03< 0.03< 0.03
0116Nitrogen, Total Oxidised as Nmg/l13151314119.27.14.86.84.8
0117Nitrate as Nmg/l12.914.91314119.167.064.796.794.79
0118Nitrite as Nmg/l0.080.0620.0170.0420.0180.040.0440.0140.0130.015
0119Ammonia un-ionised as Nmg/l< 0.000420.00041< 0.000330.00048< 0.00053< 0.00072< 0.00116< 0.00093< 0.00082< 0.00094
0162Alkalinity to pH 4.5 as CaCO3mg/l220190220180220230220210220220
0180Orthophosphate, reactive as Pmg/l0.170.160.170.130.120.160.190.310.240.3
9901Oxygen, Dissolved, % Saturation%80.390.798.993.5109.897.5103104.382.994.8
9924Oxygen, Dissolved as O2mg/l9.881213.21112.510.19.299.997.939.04