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sampling point
River Tavy At Lopwell Dam

Description RIVER TAVY AT LOPWELL DAM
Sampling point ID SW-81231119
Type Freshwater – Rivers
Status open
Location easting northing: 247500 65038
lat lon: 50.465286, -4.150085
Area Devon And Cornwall
Sub-Area Central Devon And Cornwall
Summary 238 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.

155 determinands have been measured at this site
  • 11Cl-PF3OUdS
  • 3:3 FTCA
  • 4:2 FTSA
  • 5:3 FTCA
  • 6:2 FTSA
  • 7:3 FTCA
  • 8:2 FTSA
  • 9Cl-PF3ONS
  • ADONA
  • Aclonifen
  • Action taken
  • Al- Filtered
  • Alachlor
  • Alky pH 4.5
  • Aluminium-Al
  • Ammonia(N)
  • Arsenic - As
  • As-Filtered
  • B - Filtered
  • BOD ATU
  • Ba- Filtered
  • Barium - Ba
  • Bifenox
  • Boron - as B
  • C - Org Filt
  • CHLOR A
  • CHLOROPHYLL
  • Ca Filtered
  • Cadmium - Cd
  • Calcium - Ca
  • Cd Filtered
  • Chloride Ion
  • Chlorophyl-A
  • Chlorothalnl
  • Chromium -Cr
  • Cond @ 25C
  • Copper - Cu
  • Cr- Filtered
  • Cu Filtered
  • DDE (OP')
  • DDE (PP')
  • DDT (OP')
  • DDT (PP)
  • DiClBenzPhWW
  • Diazinon
  • Dichlorvos
  • Dimethoate
  • EtFOSA
  • EtFOSAA-B
  • EtFOSAA-L
  • FBSA
  • FOSA
  • Fe- Filt
  • HCH Alpha
  • HCH Beta
  • HCH Delta
  • HCH Gamma
  • HEXACHLORO 1
  • HFPO-DA
  • Hardness
  • Hdnss Ca
  • Hdnss Mg
  • Heptachlor
  • Hexachlorbnz
  • IonicBalance
  • Irgarol 1051
  • Iron - as Fe
  • K- Filtered
  • Lead - as Pb
  • Lithium - Li
  • Lithium Filt
  • MR Screen
  • Magnesium-Mg
  • Manganse-Mn
  • MeFOSAA-B
  • MeFOSAA-L
  • Mercury - Hg
  • Mg Filtered
  • Mn- Filtered
  • N Inorganic
  • N Oxidised
  • N-MeFOSA
  • NFDHA
  • NH3 un-ion
  • Na- Filtered
  • Ni- Filtered
  • Nickel - Ni
  • Nitrate-N
  • Nitrite-N
  • Nitrogen - N
  • O Diss %sat
  • Oil & Grs Vs
  • Orthophospht
  • Oxygen Diss
  • PCB Con 028
  • PCB Con 052
  • PCB Con 101
  • PCB Con 118
  • PCB Con 138
  • PCB Con 153
  • PCB Con 180
  • PCBs
  • PClBenzene
  • PFBA
  • PFBS
  • PFDS
  • PFDoS
  • PFEESA
  • PFHpS
  • PFHxS-B
  • PFHxS-L
  • PFHxSA
  • PFMOBA
  • PFMOPrA
  • PFNS
  • PFODA
  • PFOS (B)
  • PFOS (L)
  • PFPeS
  • PFTrDA
  • PFUnDS
  • PFdecncAcid
  • PFdodencAcid
  • PFecHS
  • PFheptncAcid
  • PFhexncAcid
  • PFnonncAcid
  • PFoctncAcid
  • PFpentncAcid
  • PFtetdncAcid
  • PFundencAcid
  • Pb Filtered
  • Pendimethaln
  • Phosphate
  • Phosphorus-P
  • Potassium- K
  • Quinoxyfen
  • SALinsitu
  • SO4dis
  • SiO2 Rv
  • Sld Sus@105C
  • Sodium - Na
  • Strontium-Sr
  • StrontumFilt
  • Sulphate SO4
  • Temp Water
  • Terbutryne
  • TurbidityNTU
  • Type of Flow
  • WethPresPrec
  • Zinc - as Zn
  • Zn- Filtered
  • c-Hept Epox
  • pH
  • t-Hept Epox

Sampling results

Displaying the twenty most recent samples. You can see all 238 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 26 Oct 2023 to 5 Jul 2024

NotationDeterminandUnits26 Oct
2023
11:36		14 Nov
2023
13:42		11 Dec
2023
09:42		23 Jan
2024
11:27		14 Feb
2024
12:56		22 Mar
2024
11:17		23 Apr
2024
13:35		 9 May
2024
12:29		24 Jun
2024
12:15		 5 Jul
2024
12:49
0050Leadμg/l0.931.11.10.912.90.670.510.590.560.49
0061pH7.457.187.367.277.37.54
0076Temperature of Water°C11.511.9108.310.610.5
0077Conductivity at 25 Cμs/cm11011013077110
0085BOD : 5 Day ATUmg/l1< 11.11.9< 1
0105Mercuryμg/l< 0.01< 0.01< 0.01< 0.01< 0.01< 0.01< 0.01< 0.01< 0.01< 0.01
0108Cadmiumμg/l0.0330.0440.0470.0430.0610.030.0290.0340.0270.028
0111Ammoniacal Nitrogen as Nmg/l< 0.03< 0.030.035< 0.03< 0.03< 0.03< 0.03
0116Nitrogen, Total Oxidised as Nmg/l1.71.81.41.11.51.41.4
0117Nitrate as Nmg/l1.71.81.391.11.51.391.39
0118Nitrite as Nmg/l< 0.004< 0.0040.006< 0.004< 0.0040.0070.007
0119Ammonia un-ionised as Nmg/l< 0.0001< 0.000130.00011< 0.00012< 0.0002
0135Solids, Suspended at 105 Cmg/l< 33.4< 313< 3< 3< 3< 3< 3
0162Alkalinity to pH 4.5 as CaCO3mg/l2021161520
0172Chloridemg/l1212149.711
0180Orthophosphate, reactive as Pmg/l0.0190.022< 0.010.0240.0230.0950.094
0192Phosphate :- {TIP}mg/l0.0270.030.0380.0460.022
0348Phosphorus, Total as Pmg/l0.0310.0320.0420.060.0330.110.11
0499HCH -gamma :- {Lindane}μg/l< 0.003< 0.003< 0.003< 0.003< 0.003< 0.003< 0.003< 0.003< 0.003< 0.003
0753PCB : Totalμg/l< 0.008< 0.008< 0.008< 0.008< 0.008< 0.008< 0.008< 0.008< 0.008
1183Weather : Precipitation621553
2921Perfluoro-3-methoxypropanoic acidμg/l< 0.0005
2922Perfluoro-3,6-dioxaheptanoic acidμg/l< 0.0005
2923Perfluoro(4-methoxybutanoic) acidμg/l< 0.0005
2924Perfluoro(2-ethoxyethane)sulfonic acidμg/l< 0.0005
29253-Perfluoroheptylpropanoic acidμg/l< 0.0005
29263:3 Fluorotelomer carboxylic acidμg/l< 0.004
29422-(N-Ethylperfluorooctanesulfonamido)acetic acid (B)μg/l< 0.001
29432-(N-Methylperfluorooctanesulfonamido)acetic acid (B)μg/l< 0.002
2944Perfluorohexanesulfonic acid (B)μg/l< 0.0005
2953Perfluoroundecane sulfonic acidμg/l< 0.004
2955Perfluorotridecanoic acidμg/l< 0.005
2957Perfluoropentanesulfonic acidμg/l< 0.0005
2959Perfluorooctanesulfonic acid (linear)μg/l< 0.0005
2960Perfluorooctanesulfonic acid (branched)μg/l< 0.0005
2961Perfluorooctanesulfonamideμg/l< 0.001
2962Perfluorooctadecanoic acidμg/l< 0.002
2963Perfluorononanesulfonic acidμg/l< 0.0005
2964Perfluorohexanesulfonic acid (L)μg/l< 0.0005
2965Perfluorohexanesulfonamideμg/l< 0.0005
2967Perfluoroheptanesulfonic acidμg/l< 0.0005
2968Perfluorododecane sulfonic acidμg/l< 0.005
2969Perfluorodecanesulfonic acidμg/l< 0.002
2970Perfluorobutylsulfonamide (perfluorobutane sulfonamide)μg/l< 0.0005
2972Perfluorobutanesulfonic acidμg/l< 0.001
2973Perfluoro-4-ethylcyclohexanesulfonic acidμg/l< 0.0005
2975N-methylperfluorooctanesulfonamideμg/l< 0.002
2977N-Ethylperfluorooctanesulfonamideμg/l< 0.002
2981Hexafluoropropylene oxide dimer acid (Gen X)μg/l< 0.001
29829-chlorohexadecafluoro-3-oxanonane-1-sulfonic acidμg/l< 0.0005
29838:2 Fluorotelomer sulfonic acidμg/l< 0.001
29846:2 Fluorotelomer sulfonic acidμg/l< 0.001
29874:2 Fluorotelomer sulfonic acidμg/l< 0.0005
29884,8-Dioxa-3H-perfluorononanoic acid (ADONA)μg/l< 0.005
29892H,2H,3H,3H-Perfluorooctanoic acidμg/l< 0.001
29902-(N-Methylperfluorooctanesulfonamido)acetic acid (L)μg/l< 0.0005
29912-(N-Ethylperfluorooctanesulfonamido)acetic acid (L)μg/l< 0.001
299311-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor)μg/l< 0.001
2995Perfluorobutanoic acidμg/l< 0.001
3683Nitrogen, Total Inorganic : (Calculated)mg/l1.731.831.441.131.53
4994GCMS Screen : Target Based multi-residue screening : Semi Quantitativetext11111
6396Turbidityntu1.62.51.86< 1
6452Copperμg/l3.54.54.63.24.63.32.83.433.2
6455Zincμg/l189.1129.1116.467.25.24.7
6462Nickelμg/l1.50.920.861.40.840.91
7887Chlorophyll : Acetone Extractμg/l0.8910.53< 0.53.20.61
8887Perfluoropentanoic acidμg/l< 0.001
8888Perfluorohexanoic acidμg/l< 0.0005
8889Perfluoroheptanoic acidμg/l< 0.001
8890Perfluorooctanoic acidμg/l< 0.0005
8891Perfluorononanoic acidμg/l< 0.001
8892Perfluorodecanoic acidμg/l< 0.002
8893Perfluoroundecanoic acidμg/l< 0.002
8894Perfluorododecanoic acidμg/l< 0.002
8895Perfluorotetradecanoic acidμg/l< 0.006
9686Nitrogen, Total as Nmg/l1.921.61.31.61.71.6
9768PCB - 028μg/l< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001
9769PCB - 052μg/l< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001
9770PCB - 101μg/l< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001
9771PCB - 118μg/l< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001
9772PCB - 138μg/l< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001
9773PCB - 153μg/l< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001
9774PCB - 180μg/l< 0.002< 0.002< 0.002< 0.002< 0.002< 0.002< 0.002< 0.002< 0.002< 0.002
9901Oxygen, Dissolved, % Saturation%10210110099.7102.9100.7
9924Oxygen, Dissolved as O2mg/l11.110.911.311.711.411.2

Samples from 28 Jan 2022 to 4 Oct 2023

NotationDeterminandUnits28 Jan
2022
15:20		17 Feb
2022
11:32		 8 Mar
2022
12:19		30 Mar
2022
10:46		 5 Apr
2022
12:52		12 May
2022
12:26		18 Jul
2023
11:46		18 Aug
2023
12:22		29 Sep
2023
13:39		 4 Oct
2023
13:57
0050Leadμg/l1.10.510.490.420.511.90.62
0061pH6.957.397.247.2
0076Temperature of Water°C1516.914.413.5
0077Conductivity at 25 Cμs/cm7488110
0085BOD : 5 Day ATUmg/l1.11.41
0105Mercuryμg/l< 0.01< 0.01< 0.01< 0.01< 0.01< 0.01< 0.01< 0.01< 0.01
0108Cadmiumμg/l0.0380.0350.0250.0270.0430.0550.0430.027
0111Ammoniacal Nitrogen as Nmg/l0.088< 0.03< 0.03< 0.03< 0.030.074< 0.03< 0.03< 0.03
0116Nitrogen, Total Oxidised as Nmg/l1.71.421.71.72.10.660.91.3
0117Nitrate as Nmg/l1.691.41.991.691.692.060.6530.8961.3
0118Nitrite as Nmg/l0.015< 0.0040.00610.00720.0150.0370.0074< 0.004< 0.004
0119Ammonia un-ionised as Nmg/l< 7.0e-05< 0.00013< 0.00011
0135Solids, Suspended at 105 Cmg/l< 33.6< 3< 34.1< 34.43.4
0162Alkalinity to pH 4.5 as CaCO3mg/l131620
0172Chloridemg/l9.21112
0180Orthophosphate, reactive as Pmg/l0.0740.0240.0350.0550.0680.150.040.0340.029
0192Phosphate :- {TIP}mg/l0.0440.0410.042
0348Phosphorus, Total as Pmg/l0.0730.0370.0350.0640.0980.20.0550.0520.043
0499HCH -gamma :- {Lindane}μg/l< 0.003< 0.003< 0.003< 0.004< 0.003< 0.003< 0.003< 0.003< 0.003< 0.003
0753PCB : Totalμg/l< 0.008< 0.008< 0.008< 0.008< 0.008< 0.008< 0.008< 0.008< 0.008
1183Weather : Precipitation3111
2921Perfluoro-3-methoxypropanoic acidμg/l< 0.0005
2922Perfluoro-3,6-dioxaheptanoic acidμg/l< 0.0005
2924Perfluoro(2-ethoxyethane)sulfonic acidμg/l< 0.0005
29253-Perfluoroheptylpropanoic acidμg/l< 0.0005
29263:3 Fluorotelomer carboxylic acidμg/l< 0.004
29422-(N-Ethylperfluorooctanesulfonamido)acetic acid (B)μg/l< 0.001
29432-(N-Methylperfluorooctanesulfonamido)acetic acid (B)μg/l< 0.002
2944Perfluorohexanesulfonic acid (B)μg/l< 0.0005
2953Perfluoroundecane sulfonic acidμg/l< 0.004
2955Perfluorotridecanoic acidμg/l< 0.005
2957Perfluoropentanesulfonic acidμg/l< 0.0005
2959Perfluorooctanesulfonic acid (linear)μg/l< 0.0005
2960Perfluorooctanesulfonic acid (branched)μg/l< 0.0005
2961Perfluorooctanesulfonamideμg/l< 0.001
2962Perfluorooctadecanoic acidμg/l< 0.002
2963Perfluorononanesulfonic acidμg/l< 0.0005
2964Perfluorohexanesulfonic acid (L)μg/l< 0.0005
2965Perfluorohexanesulfonamideμg/l< 0.0005
2967Perfluoroheptanesulfonic acidμg/l< 0.0005
2968Perfluorododecane sulfonic acidμg/l< 0.005
2969Perfluorodecanesulfonic acidμg/l< 0.002
2970Perfluorobutylsulfonamide (perfluorobutane sulfonamide)μg/l< 0.0005
2972Perfluorobutanesulfonic acidμg/l< 0.001
2973Perfluoro-4-ethylcyclohexanesulfonic acidμg/l< 0.0005
2975N-methylperfluorooctanesulfonamideμg/l< 0.002
2977N-Ethylperfluorooctanesulfonamideμg/l< 0.002
2981Hexafluoropropylene oxide dimer acid (Gen X)μg/l< 0.001
29829-chlorohexadecafluoro-3-oxanonane-1-sulfonic acidμg/l< 0.0005
29838:2 Fluorotelomer sulfonic acidμg/l< 0.001
29846:2 Fluorotelomer sulfonic acidμg/l< 0.001
29874:2 Fluorotelomer sulfonic acidμg/l< 0.0005
29892H,2H,3H,3H-Perfluorooctanoic acidμg/l< 0.001
29902-(N-Methylperfluorooctanesulfonamido)acetic acid (L)μg/l< 0.0005
29912-(N-Ethylperfluorooctanesulfonamido)acetic acid (L)μg/l< 0.001
299311-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor)μg/l< 0.001
2995Perfluorobutanoic acidμg/l< 0.001
3683Nitrogen, Total Inorganic : (Calculated)mg/l0.690.931.33
4994GCMS Screen : Target Based multi-residue screening : Semi Quantitativetext1
6396Turbidityntu1.43.6< 1
6452Copperμg/l3.72.92.933.95.44.23.3
6455Zincμg/l8.37.55.35.68.4119.77
7887Chlorophyll : Acetone Extractμg/l1.31.80.59
8887Perfluoropentanoic acidμg/l< 0.001
8888Perfluorohexanoic acidμg/l< 0.0005
8889Perfluoroheptanoic acidμg/l< 0.001
8890Perfluorooctanoic acidμg/l< 0.0005
8891Perfluorononanoic acidμg/l< 0.001
8892Perfluorodecanoic acidμg/l< 0.002
8893Perfluoroundecanoic acidμg/l< 0.002
8894Perfluorododecanoic acidμg/l< 0.002
8895Perfluorotetradecanoic acidμg/l< 0.006
9686Nitrogen, Total as Nmg/l21.721.71.92.51.11.11.5
9768PCB - 028μg/l< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001
9769PCB - 052μg/l< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001
9770PCB - 101μg/l< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001
9771PCB - 118μg/l< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001
9772PCB - 138μg/l< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001
9773PCB - 153μg/l< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001< 0.001
9774PCB - 180μg/l< 0.002< 0.002< 0.002< 0.002< 0.002< 0.002< 0.002< 0.002< 0.002
9901Oxygen, Dissolved, % Saturation%99.4101101.9101.5
9924Oxygen, Dissolved as O2mg/l109.7610.410.5