sampling point
Thames At Gravesend ( 42.5 Kms Below Lond

Description	THAMES AT GRAVESEND ( 42.5KMS BELOW LONDON BRIDGE )
Sampling point ID	TH-PTTR0021
Type	Saline Water – Estuarine Sites – Non Bathing/Shellfish
Status	open
Location	easting northing: 564900 174600 lat lon: 51.446377, 0.371559
Area	Kent And South London
Sub-Area	Ecmas Sampling (Kent And South London)
Summary	498 samples taken between 2000 and 2024 Note: a maximum of 10,000 sample measurements are included in this view. Older measurements have been omitted. Please see the API to access the complete data set.

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.

206 determinands have been measured at this site

1,1,1-TCA
1,2,3-TCB
1,2,4-TCB
1,3,5-TCB
112TCEthan
12-DCA
2,4-D
2-CHLORO-4-N
2-CHLORO-6-N
24Dichloropl
2Chlorophenl
2Cl5NToluene
4-nonPhenol
4Cl2Ntoluene
4Cl3MePhenol
4Cl3NToluene
ACENAPTHEN
Acenapthylen
Aclonifen
Alachlor
Aldrin
AmmUnionSal
Ammonia(N)
Anthracene
Arsenic - As
As-Filtered
Atrazine
B-(a)-anthra
B-[a]-pyrene
B-[b]-fluora
B-[e]-pyrene
B-[ghi]-pery
B-[k]-fluora
BOD ATU
BROMO-DCM
Bentazone
Benzene
Bifenox
Biphenyl
Boron - as B
Bromoform
C - Org Filt
CHLOROPHYLL
CHT Cation
Cadmium - Cd
Carbon Tet
Cd Filtered
Chlordbrmthn
Chlorfenvphs
Chloride Ion
Chloroform
Chlorothalnl
Chromium -Cr
Chrysene
ClpyrifosEt
Copper - Cu
Cr Hex Filt
Cr Hexavalnt
Cr- Filtered
Cu Filtered
Cyanide - CN
Cypermethrin
DBT Cation
DDE (PP')
DDT (OP')
DDT (PP)
DDT Derived
DEHP
DPT Cation
DiClBenzPhWW
DiClMe
DiOctyl Sn
Diazinon
Dibenz[ah]an
Dichlorvos
Dieldrin
Dimethoate
Diuron
Dtrgt NncSyn
DtrgtAncSyn
Endosulphan
EndosulphanA
EndosulphanB
Endrin
FLUORENE
Fe- Filt
Fenitrothion
Fluoranthene
HBCDD
HCH Alpha
HCH Beta
HCH Delta
HCH Epsilon
HCH Gamma
HEXACHLORO 1
HTrlTW
Heptachlor
Hexachlorbnz
Hg Filtered
Ind123pyrene
Irgarol 1051
Iron - as Fe
Isodrin
Isoproturon
LIGHT EXT.
Lead - as Pb
Linuron
MBT Cation
MPhT Cation
MR Screen
Malathion
Manganse-Mn
Mecoprop
Mercury - Hg
MonOctylSn
N Dis Inorg
N Oxid Filt
N Oxidised
NATGRIDREF
NGR Easting
NGR Northing
NH3 filt N
NH3 un-ion
Naphthalene
Ni- Filtered
Nickel - Ni
Nitrate Filt
Nitrate-N
Nitrite Filt
Nitrite-N
O Diss %sat
Oil & Grs Vs
Orthophospht
OrthophsFilt
Oxygen Diss
PBDE 100
PBDE 138
PBDE 153
PBDE 154
PBDE 183
PBDE 28
PBDE 47
PBDE 66
PBDE 85
PBDE 99
PClBenzene
PFOS
PFdecncAcid
PFdodencAcid
PFheptncAcid
PFhexncAcid
PFnonncAcid
PFoctncAcid
PFpentncAcid
PFtetdncAcid
PFundencAcid
PYRENE
Pb Filtered
Pendimethaln
Pentachlrphl
Permethrn-Tr
Permethrn-cs
Perylene
Phenanthrene
Phenol
Phytoplankto
Potassium- K
Quinoxyfen
SALinsitu
Sample Depth
SiO2 Filt
SiO2 Rv
Simazine
Sld NV@500C
Sld Sus@105C
Sld Sus@500C
Sodium - Na
Sulphate SO4
TDE (PP)
Temp Water
Terbutryne
TetBT Cation
TetClEthene
TetPTtin Cat
Time Hi-Tide
Toluene
Tot HCHs ABG
Transparency
TriBT Cation
TriPT Cation
Trichloroeth
Triclosan
Trifluralin
Turbdty in-s
Type of Flow
Vanadium - V
Vol Filtered
Water Depth
Zinc - as Zn
Zn- Filtered
c-Hept Epox
o-Xylene
pFoctanoate
pH
ptOctylPheno
t-Hept Epox

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

Samples from 7 Mar 2024 to 3 Sep 2024

Notation	Determinand	Units	7 Mar 2024 14:23	4 Apr 2024 10:57	4 Apr 2024 10:59	9 May 2024 18:51	9 May 2024 18:53	5 Jun 2024 17:46	2 Jul 2024 18:38	4 Jul 2024 10:22	11 Aug 2024 13:27	3 Sep 2024 19:35
0004	Time of high tide	hh.mm	16.06	9.57	9.57	14.1	14.1	13.43	10.05	10.05	5.14	17.11
0006	Sample Depth below surface	m	0.2	9.44	0.2	9.9	0.2	0.2	0.2	11.34	12.35	8.7
0052	Lead, Dissolved	μg/l	0.092		0.076		0.1	0.092	0.078
0076	Temperature of Water	°C	8.4	10.5	10.9	10.5	10.9	17.2	19.3	19.3	21.5	20
0103	Mercury, Dissolved	μg/l	< 0.01		< 0.01		< 0.01	< 0.01	< 0.01
0106	Cadmium, Dissolved	μg/l	< 0.03		< 0.03		< 0.03	< 0.03	0.049
0301	Carbon, Organic, Dissolved as C :- {DOC}	mg/l							3.6
0714	Benzo(g,h,i)Perylene	μg/l	0.0051		0.0069		0.035	0.021	0.0013
0731	Benzo(b)Fluoranthene	μg/l	0.0045		0.0061		0.038	0.023	0.0014
0733	Benzo(k)Fluoranthene	μg/l	0.0023		0.0029		0.018	0.011	0.00064
0736	Fluoranthene	μg/l	0.0099		0.0098		0.037	0.031
0746	Indeno(1,2,3-cd)pyrene	μg/l	0.004		0.006		0.033	0.019	0.001
1085	Pentachlorophenol	μg/l	< 0.02		< 0.02		< 0.02	< 0.02	< 0.02
3002	Atrazine	μg/l	< 0.003		< 0.003		< 0.003	< 0.003	< 0.003
3408	Zinc, Dissolved	μg/l	5		5.6		4.7	5.3	4.7
3410	Nickel, Dissolved	μg/l	1.9		1.9		1.8	1.7	1.8
3428	Water Depth	m	15.57	15.39	13.54	14	14	13	16.48	16.27	12.55	8.82
3976	Turbidity : In Situ	ftu	156.6	48.5	21.1	48.3	21.1	96.5	54.5	73.6	95	195.1
4574	Phytoplankton		1		1		1	1	1
4865	Volume of Sample Filtered	ml	280		720		330	770	430
4925	Nitrogen, Dissolved Inorganic : as N	mg/l	4.22		5.07		5.56	5.62	4.83
4994	GCMS Screen : Target Based multi-residue screening : Semi Quantitative	text			1		1	1	1
5732	Triphenyl Tin as Cation	μg/l	0.00099		< 0.0002		< 0.0002	< 0.0002	< 0.0002
6019	NGR : Easting	ngr	564920	564915	564960	564942	564967	564908	564854	564861	564807	564887
6020	NGR : Northing	ngr	174612	174588	174577	174576	174551	174597	174598	174595	174560	174570
6045	Arsenic, Dissolved	μg/l	1.4		1.3		1.7	2.2	2.4
6399	Benzo(a)Pyrene	μg/l	0.005		0.0071		0.035	0.023	0.0014
6450	Copper, Dissolved	μg/l	2.3		2.5		2.4	2.8	2.9
6485	Nitrite, Filtered as N	mg/l	0.054		0.043		0.099	0.0097	0.016
7342	Time of sampling relative to previous high water	hh.mm	5.23	1	1.02	4.42	4.43	4.01	3.31	3.32	8.15	2.26
7608	Salinity : In Situ	ppt	9.34	19.26	10.36	19.29	10.36	12.64	17.77	18.33	17.38	18.73
7887	Chlorophyll : Acetone Extract	μg/l	7		2.8		17	6.1	2
8944	Tributyl Tin as Cation	μg/l	< 0.0002		< 0.0002		0.00073	0.00033	0.00028
9274	Perfluorooctanoate anion	μg/l	0.0033		0.0025		0.0025	0.0043	0.0017
9276	Perfluorooctylsulphonate anion	μg/l			0.01		0.012	0.016	0.0049
9853	Nitrate, Filtered as N	mg/l	4.05		4.96		5.4	5.59	4.78
9856	Orthophosphate, Filtered as P	mg/l	0.37		0.33		0.43	0.54	0.53
9857	Silicate, Filtered as SiO2	mg/l	7		6.8		5.5	4.7	3.1
9901	Oxygen, Dissolved, % Saturation	%	82.7	87.8	87.8	88.9	87.8	75	81.2	81.5	77.8	74.9
9924	Oxygen, Dissolved as O2	mg/l	9.17	8.72	9.13	8.83	9.13	6.71	6.77	6.77	6.23	6.12
9943	Nitrogen, Total Oxidised, Filtered as N	mg/l	4.1		5		5.5	5.6	4.8
9993	Ammoniacal Nitrogen, Filtered as N	mg/l	0.12		0.067		0.064	0.024	0.025

Samples from 4 May 2023 to 6 Feb 2024

Notation	Determinand	Units	4 May 2023 13:11	2 Jun 2023 17:52	5 Jul 2023 11:29	1 Aug 2023 18:50	7 Sep 2023 11:36	9 Oct 2023 14:49	10 Nov 2023 16:20	9 Dec 2023 11:14	7 Jan 2024 11:33	6 Feb 2024 12:23
0004	Time of high tide	hh.mm	12.46	14.21	16.28	15.3	6.16	11.08	11.5	9.24	8.27	8.53
0006	Sample Depth below surface	m	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2
0052	Lead, Dissolved	μg/l	0.074	0.14	0.11	0.087	0.11	0.062	0.069	0.072	0.11	0.087
0076	Temperature of Water	°C	12.4	16.1	19.8	19.3	20.4	17.7	11.7	7.4	8.5	7.7
0103	Mercury, Dissolved	μg/l	< 0.01	< 0.01	0.011	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01
0106	Cadmium, Dissolved	μg/l	0.03	0.031	0.074	0.054	0.072	0.061	0.033	0.03	< 0.03	< 0.03
0301	Carbon, Organic, Dissolved as C :- {DOC}	mg/l	3.6
0714	Benzo(g,h,i)Perylene	μg/l	0.00021	0.033	0.0042	0.00035	0.00087	0.013	0.033	0.017	0.0048	0.00051
0731	Benzo(b)Fluoranthene	μg/l	0.00024	0.037	0.0047	0.00033	0.00092	0.013	0.031	0.016	0.0029	0.0005
0733	Benzo(k)Fluoranthene	μg/l	0.0001	0.02	0.0023	0.00015	0.00042	0.0069	0.016	0.0083	0.0015	0.00022
0736	Fluoranthene	μg/l	0.0011	0.046	0.0094	0.00052	0.0022	0.013	0.029	0.018	0.0063	0.0014
0746	Indeno(1,2,3-cd)pyrene	μg/l	0.00016	0.035	0.0042	0.00029	0.00084	0.013	0.033	0.016	0.004	0.00033
1085	Pentachlorophenol	μg/l	< 0.02	< 0.02	< 0.02	< 0.02	< 0.02	< 0.02	< 0.02	< 0.02	< 0.02	< 0.02
3002	Atrazine	μg/l	< 0.003	< 0.003	< 0.003	< 0.003	< 0.003	< 0.003	< 0.003	< 0.003	< 0.003	< 0.003
3408	Zinc, Dissolved	μg/l	4.8	6.7	6.3	6.2	6.7	6.3	6.2	5.6	5.6	5
3410	Nickel, Dissolved	μg/l	1.6	2	2.2	2.1	2.2	2.1	2	1.6	1.9	1.5
3428	Water Depth	m	18.67	6.14	7.36	13.78	12.2	10.95	16.4	17.3	14.5	14.4
3976	Turbidity : In Situ	ftu	57.8	82.2	84.3	127.4	208.1	89.1	131.1	46.1	50.9	136.9
4574	Phytoplankton		1	1	1	1	1	1	1	1	1	1
4865	Volume of Sample Filtered	ml	450	550	380	440	250	340	210	580	570	310
4925	Nitrogen, Dissolved Inorganic : as N	mg/l	4.05	5.85	5.01	6.01	5.51	5.61	4.96	2.54	5.34	4.96
4994	GCMS Screen : Target Based multi-residue screening : Semi Quantitative	text	1	1	1	1	1	1	1	1	1	1
5732	Triphenyl Tin as Cation	μg/l		< 0.0002	< 0.0002		0.00038	< 0.0002	< 0.0002		< 0.0002	< 0.0002
6019	NGR : Easting	ngr	564885	564963	564864	564892	564901	564900	564969	564919	564907	564894
6020	NGR : Northing	ngr	174579	174555	174555	174604	174588	174578	174635	174597	174573	174595
6045	Arsenic, Dissolved	μg/l	1.6	2.1	2.5	2.6	3	3.1	1.8	1.8	1.4	1.7
6399	Benzo(a)Pyrene	μg/l	0.00021	0.043	0.005	0.00036	0.00083	0.014	0.034	0.019	0.0033	0.00046
6450	Copper, Dissolved	μg/l	3.4	4.2	3.6	3.7	3.8	3.8	3.8	2.7	2.8	2.6
6485	Nitrite, Filtered as N	mg/l	0.017	0.02	0.019	0.02	0.015	0.023	0.026	0.0066	0.055	0.021
7342	Time of sampling relative to previous high water	hh.mm	0.25	3.31	3.55	3.2	5.2	3.41	4.3	1.52	3.08	3.3
7608	Salinity : In Situ	ppt	19.26	12.84	16.86	17.65	19.67	20	11.69	15.75	8.01	14.77
7887	Chlorophyll : Acetone Extract	μg/l	3.2	13	5.7		19	1.2	6.3	< 0.9	1.5	2.9
8944	Tributyl Tin as Cation	μg/l		< 0.0005	0.00039	0.00054	< 0.001	0.0052	0.00031		< 0.0002	0.00024
9274	Perfluorooctanoate anion	μg/l	0.003	0.0038	0.0027	0.0031	0.0029	0.0026	0.0033	0.0024	0.0029	0.0018
9276	Perfluorooctylsulphonate anion	μg/l	0.00017	0.0011	0.0046	0.0069	0.0039	> 0.008	0.012	0.0083	0.012	0.0063
9853	Nitrate, Filtered as N	mg/l	3.98	5.78	4.98	5.98	5.49	5.58	4.87	2.49	5.15	4.88
9856	Orthophosphate, Filtered as P	mg/l	0.33	0.61	0.62	0.84	0.79	0.79	0.44	0.3	0.33	0.36
9857	Silicate, Filtered as SiO2	mg/l	4	4	2	3.8	4.2	4.8	8.3	4.1	9.3	7.4
9901	Oxygen, Dissolved, % Saturation	%	91.5	83.2	75	78.6	70.5	77.7	74.1	100.3	83	94.1
9924	Oxygen, Dissolved as O2	mg/l	8.71	7.61	6.22	6.56	5.69	6.6	7.5	11	9.26	10.3
9943	Nitrogen, Total Oxidised, Filtered as N	mg/l	4	5.8	5	6	5.5	5.6	4.9	2.5	5.2	4.9
9993	Ammoniacal Nitrogen, Filtered as N	mg/l	0.048	0.047	< 0.01	< 0.01	< 0.01	< 0.01	0.063	0.035	0.14	0.058

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sampling point Thames At Gravesend ( 42.5 Kms Below Lond

Determinands

Sampling results

Samples from 7 Mar 2024 to 3 Sep 2024

Samples from 4 May 2023 to 6 Feb 2024

sampling point
Thames At Gravesend ( 42.5 Kms Below Lond