sampling point
Gt Hallingbury Brook Above Stort
| Description | GT HALLINGBURY BROOK ABOVE STORT |
|---|---|
| Sampling point ID | TH-PLER0039 |
| Type | Freshwater – Rivers |
| Status | open |
| Location |
easting northing: 549784 219023 lat lon: 51.849705, 0.173219 |
| Area | Hertfordshire And North London |
| Sub-Area | L&W Herts & North London |
| Summary | 232 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.
101 determinands have been measured at this site
- 4-nonPhenol
- Action taken
- Alky pH 4.5
- Ammonia(N)
- AmoniaTotYSI
- B-[a]-pyrene
- B-[b]-fluora
- B-[ghi]-pery
- B-[k]-fluora
- BOD ATU
- C - Org Filt
- C Organic DW
- Ca Filtered
- Cadmium - Cd
- Calcium - Ca
- Cd - Dry Wt
- Cd Filtered
- Chloride Ion
- Cond @ 20C
- Cond @ 25C
- Cr- Filtered
- Cu Filtered
- DEHP
- DrySolids30C
- Fe- Filt
- Fluoranthene
- GS Kurtosis
- GS Mean
- GS Median
- GSF 160-112
- GSF 11.4-9.1
- GSF 112-84
- GSF 125-249
- GSF 1k- 2k
- GSF 2000-500
- GSF 250-499
- GSF 261-160
- GSF 2k-4k
- GSF 39-30.3
- GSF 50.2-39
- GSF 500-999
- GSF 564-261
- GSF 62.5-124
- GSF 64-50
- GSF 7.2-5.8
- GSF 84-64
- GSF 9.1-7.2
- GSF <20
- GSF <2000um
- GSF <5.8 um
- GSF >2000um
- GSF >8000
- GSF14.5-11.4
- GSF18.5-14.5
- GSF23.7-18.5
- GSF30.3-23.7
- GSF4000-7999
- GraphSkewn
- Hardness
- Hg - Dry Wt
- Hg Filtered
- Ind123pyrene
- Magnesium-Mg
- Mean dia
- Median dia
- Mercury - Hg
- Mn- Filtered
- N Oxidised
- NH3 un-ion
- Ni- Filtered
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Orthophospht
- Oxygen Diss
- PBDE 100
- PBDE 153
- PBDE 154
- PBDE 28
- PBDE 47
- PBDE 99
- Pb Filtered
- SI-EC-CD
- SI-EC-HG
- SI-GQA
- Sample Prep
- Sieved < 63
- Sld Sus@105C
- Sld V @400C
- Sld V @480C
- Solids <63um
- Sort Coeff
- Temp Water
- TriBT Cation
- Triclosan
- Type of Flow
- Zinc - as Zn
- Zn- Filtered
- pH
- pH in-situ
- ptOctylPheno
Sampling results
Displaying the twenty most recent samples. You can see all 232 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 16 Aug 2022 to 11 Jul 2024
Samples from 14 Oct 2021 to 29 Jul 2022
| Notation | Determinand | Units | 14 Oct 2021 11:13 | 2 Nov 2021 10:15 | 2 Dec 2021 10:58 | 24 Jan 2022 11:27 | 17 Feb 2022 13:04 | 11 Mar 2022 09:25 | 19 Apr 2022 12:18 | 30 May 2022 17:38 | 20 Jun 2022 11:32 | 29 Jul 2022 08:51 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.76 | 7.81 | 7.92 | 7.93 | 7.89 | 7.9 | 7.89 | 7.71 | 7.78 | 7.84 | |
| 0076 | Temperature of Water | °C | 16 | 12.9 | 9.2 | 10.1 | 9.7 | 11.2 | 13.6 | 16.2 | 17.7 | 18.9 |
| 0077 | Conductivity at 25 C | μs/cm | 1210 | 1079 | 1268 | 1211 | 1007 | 1156 | 1209 | 1292 | 1269 | 1302 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | < 0.03 | < 0.03 | < 0.03 | < 0.03 | < 0.03 | < 0.03 | 0.036 | 0.053 | 0.034 | |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 29 | 20 | 26 | 21 | 15 | 20 | 24 | 31 | 31 | |
| 0117 | Nitrate as N | mg/l | 29 | 20 | 26 | 21 | 15 | 20 | 24 | 31 | 31 | |
| 0118 | Nitrite as N | mg/l | 0.0074 | 0.0067 | 0.006 | 0.015 | 0.014 | 0.0086 | 0.049 | 0.019 | 0.015 | |
| 0119 | Ammonia un-ionised as N | mg/l | < 0.00049 | < 0.00044 | < 0.00043 | < 0.00047 | < 0.00042 | < 0.00048 | 0.00067 | 0.00103 | 0.00083 | |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 190 | 210 | 190 | 240 | 230 | 230 | 210 | 180 | 180 | |
| 0180 | Orthophosphate, reactive as P | mg/l | 1 | 0.54 | 0.47 | 0.9 | 0.62 | 0.52 | 0.67 | 1.2 | 1.2 | |
| 9901 | Oxygen, Dissolved, % Saturation | % | 94.7 | 94.9 | 92.7 | 97.3 | 100.7 | 99.3 | 101.2 | 96.6 | 92.2 | 87.9 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 9.32 | 10 | 10.6 | 10.9 | 11.4 | 10.9 | 10.5 | 9.47 | 8.76 | 8.15 |