sampling point
Lee Nav Subsidiary B At Keides Weir
| Description | LEE NAV SUBSIDIARY B AT KEIDES WEIR |
|---|---|
| Sampling point ID | TH-PLER0083 |
| Type | Freshwater – Rivers |
| Status | open |
| Location |
easting northing: 536375 195841 lat lon: 51.644832, -0.030409 |
| Area | Hertfordshire And North London |
| Sub-Area | L&W Herts & North London |
| Summary | 212 samples taken between 2019 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.
119 determinands have been measured at this site
- 1,2,3-TCB
- 1,2,4-TCB
- 1,3,5TCB D
- Action taken
- Al - Dry Wt
- Aldrin DWt
- Alky pH 4.5
- Ammonia(N)
- AmoniaTotYSI
- As - DWt
- As < 63
- BOD ATU
- C - Org Filt
- C Organic DW
- Calcium - Ca
- Cd - Dry Wt
- Chloride Ion
- Cond @ 20C
- Cond @ 25C
- Copper - Cu
- Cr DW <63
- Cr - Dry Wt
- Cu - Dry Wt
- Cu DW <63
- Cu Filtered
- DDE (PP')DWt
- DDT (OP')DWt
- DDT (PP')DWt
- Dieldrin DWt
- Drins Dry Wt
- DrySolids30C
- Endrin DryWt
- 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
- HCB DRY WT
- HCBD DRY
- HCH Beta DWt
- HCHAlpha DWt
- HCHDelta DWt
- HCHGamma DWt
- HCHs ABG dw
- Hardness
- Hg - Dry Wt
- Isodrin DWt
- MR Screen
- Magnesium-Mg
- Mean dia
- Median dia
- N Oxidised
- NH3 un-ion
- Ni - Dry Wt
- Ni DW <63
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Oil & Grs Vs
- Orthophospht
- Oxygen Diss
- PCB 101 DW
- PCB 118 DW
- PCB 138 DW
- PCB 153 DW
- PCB 180 DW
- PCB 28 DW
- PCB 52 DW
- Pb - Dry Wt
- Pb DW <63
- PentchlrpDWt
- Phenol Odour
- SI-EC-F
- SI-GQA
- Sample Prep
- Sieved < 63
- Sieved < 63
- Sld Sus@105C
- Sld V @400C
- Sld V @480C
- Solids <63um
- Sort Coeff
- TCB tot dw
- TDE (PP')DWt
- Temp Water
- Tot DDTs dw
- Type of Flow
- Zinc - as Zn
- Zn - Dry Wt
- Zn DW < 63
- pH
- pH in-situ
Sampling results
Displaying the twenty most recent samples. You can see all 212 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 3 Mar 2015 to 7 May 2019
| Notation | Determinand | Units | 3 Mar 2015 12:47 | 7 Apr 2015 16:26 | 5 May 2015 14:05 | 3 Jun 2015 17:12 | 1 Jul 2015 16:06 | 11 Aug 2015 10:52 | 15 Sep 2015 13:53 | 14 Oct 2015 13:04 | 4 Apr 2019 10:31 | 7 May 2019 13:52 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 8.33 | 8.71 | |||||||||
| 0076 | Temperature of Water | °C | 8.7 | 12.6 | ||||||||
| 0077 | Conductivity at 25 C | μs/cm | 858 | 828 | ||||||||
| 0111 | Ammoniacal Nitrogen as N | mg/l | < 0.03 | < 0.03 | ||||||||
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 5.12 | 1.3 | ||||||||
| 0117 | Nitrate as N | mg/l | 5.1 | 1.27 | ||||||||
| 0118 | Nitrite as N | mg/l | 0.0202 | 0.0267 | ||||||||
| 0119 | Ammonia un-ionised as N | mg/l | < 0.0005 | < 0.00066 | ||||||||
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 217 | 195 | ||||||||
| 0180 | Orthophosphate, reactive as P | mg/l | 0.13 | < 0.01 | ||||||||
| 0301 | Carbon, Organic, Dissolved as C :- {DOC} | mg/l | 8.52 | 6.62 | 5.7 | 5.67 | 5.2 | 4.76 | 5.1 | 4.64 | ||
| 9901 | Oxygen, Dissolved, % Saturation | % | 104.2 | 159.1 | ||||||||
| 9924 | Oxygen, Dissolved as O2 | mg/l | 12.1 | 16.9 |
Samples from 1 May 2014 to 13 Feb 2015
| Notation | Determinand | Units | 1 May 2014 14:49 | 5 Jun 2014 10:01 | 25 Jul 2014 13:23 | 12 Aug 2014 14:59 | 2 Sep 2014 12:54 | 6 Oct 2014 12:55 | 19 Nov 2014 12:03 | 4 Dec 2014 12:40 | 7 Jan 2015 15:15 | 13 Feb 2015 13:25 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0301 | Carbon, Organic, Dissolved as C :- {DOC} | mg/l | 5.55 | 5.43 | 5.76 | 4.91 | 5.05 | 4.72 | 10.3 | 8.51 | 9.33 | 6.28 |