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sampling point
Dollis Brook Above Mutton Brook, Hendon

Description DOLLIS BROOK ABOVE MUTTON BROOK, HENDON
Sampling point ID TH-PBRR0060
Type Freshwater – Unspecified
Status open
Location easting northing: 524030 189130
lat lon: 51.587377, -0.211101
Area Hertfordshire And North London
Sub-Area L&W Herts & North London
Summary 101 samples taken between 2024 and 2013

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.

13 determinands have been measured at this site
  • Alky pH 4.5
  • Ammonia(N)
  • BOD ATU
  • Cond @ 25C
  • N Oxidised
  • NH3 un-ion
  • Nitrate-N
  • Nitrite-N
  • O Diss %sat
  • Orthophospht
  • Oxygen Diss
  • Temp Water
  • pH

Sampling results

Displaying the twenty most recent samples. You can see all 101 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 16 Oct 2023 to 17 Jul 2024

NotationDeterminandUnits16 Oct
2023
15:46
20 Nov
2023
12:09
11 Dec
2023
14:00
18 Jan
2024
14:21
20 Feb
2024
13:27
18 Mar
2024
09:39
15 Apr
2024
11:46
14 May
2024
11:13
17 Jun
2024
12:54
17 Jul
2024
11:56
0061pH7.867.98.028.048.078.077.917.967.517.73
0076Temperature of Water°C10.610.58.62910.61114.214.616.5
0077Conductivity at 25 Cμs/cm813608547889623834782789723637
0085BOD : 5 Day ATUmg/l< 22.54.94.51.21.8
0111Ammoniacal Nitrogen as Nmg/l0.380.220.120.580.210.220.370.470.880.22
0116Nitrogen, Total Oxidised as Nmg/l31.723.42.22.72.32.92.82.5
0117Nitrate as Nmg/l2.891.661.973.332.172.632.212.742.572.42
0118Nitrite as Nmg/l0.110.0360.0270.0710.0320.0740.0930.160.230.077
0119Ammonia un-ionised as Nmg/l0.005270.003320.001980.005870.003560.004190.005920.01060.007390.00351
0162Alkalinity to pH 4.5 as CaCO3mg/l200170140230180210220210200170
0180Orthophosphate, reactive as Pmg/l0.380.210.130.320.180.240.240.320.630.29
9901Oxygen, Dissolved, % Saturation%76.490.295.491.296.398.388.186.345.481.4
9924Oxygen, Dissolved as O2mg/l8.491011.112.611.110.99.698.834.617.93

Samples from 2 Dec 2022 to 1 Sep 2023

NotationDeterminandUnits 2 Dec
2022
13:45
24 Jan
2023
10:47
7 Feb
2023
11:26
3 Mar
2023
15:38
31 May
2023
13:13
23 Jun
2023
09:06
27 Jun
2023
12:55
17 Jul
2023
10:23
4 Aug
2023
13:08
1 Sep
2023
10:02
0061pH7.998.057.927.997.747.98.127.677.767.85
0076Temperature of Water°C8.13.566.113.31717.215.616.416.4
0077Conductivity at 25 Cμs/cm7778481122105410021111947712754325
0085BOD : 5 Day ATUmg/l< 3
0111Ammoniacal Nitrogen as Nmg/l0.330.52.610.710.890.50.490.30.12
0116Nitrogen, Total Oxidised as Nmg/l2.73.72.74.52.63.34.72.22.71.3
0117Nitrate as Nmg/l2.63.632.484.372.362.864.362.012.591.25
0118Nitrite as Nmg/l0.10.0690.220.130.240.440.340.190.110.054
0119Ammonia un-ionised as Nmg/l0.005120.005650.02950.01340.009150.02160.01540.006380.005080.00249
0162Alkalinity to pH 4.5 as CaCO3mg/l18019025026026025024018018079
0180Orthophosphate, reactive as Pmg/l0.250.240.870.490.670.730.940.580.290.21
9901Oxygen, Dissolved, % Saturation%84.79378.981.140.864.980.644.873.588.3
9924Oxygen, Dissolved as O2mg/l9.9912.39.8110.14.266.267.744.457.178.62