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sampling point
St. Lawrence Stream U/S Pendewey Bridge

Description ST. LAWRENCE STREAM ABOVE PENDEWEY BRIDGE
Sampling point ID SW-82521220
Type Freshwater – Rivers
Status open
Location easting northing: 204504 66999
lat lon: 50.470139, -4.756262
Area Devon And Cornwall
Sub-Area West Devon And Cornwall
Summary 133 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.

54 determinands have been measured at this site
  • Action taken
  • Al- Filtered
  • Alky pH 4.5
  • Aluminium-Al
  • Ammonia(N)
  • BOD ATU
  • C - Org Filt
  • Ca Filtered
  • Cadmium - Cd
  • Calcium - Ca
  • Cd Filtered
  • Cond @ 25C
  • Copper - Cu
  • Cr- Filtered
  • Cu BLM Bio
  • Cu Filtered
  • E.coli C-MF
  • Fe- Filt
  • Hardness
  • Hdnss Ca
  • Hdnss Mg
  • IE Conf
  • IE Pres
  • Iron - as Fe
  • Lead - as Pb
  • Magnesium-Mg
  • Manganse-Mn
  • Mg Filtered
  • Mn BLM Bio
  • Mn- Filtered
  • N Inorganic
  • N Oxidised
  • NH3 un-ion
  • Ni BLM Bio
  • Ni- Filtered
  • Nickel - Ni
  • Nitrate-N
  • Nitrite-N
  • O Diss %sat
  • Orthophospht
  • Oxygen Diss
  • Pb BLM Bio
  • Pb Filtered
  • Potassium- K
  • Sodium - Na
  • Sulphate SO4
  • Temp Water
  • Type of Flow
  • WethPresPrec
  • Zinc - as Zn
  • Zn BLM Bio
  • Zn- Filtered
  • pH
  • pH in-situ

Sampling results

Displaying the twenty most recent samples. You can see all 133 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 30 Aug 2023 to 3 Jul 2024

NotationDeterminandUnits30 Aug
2023
14:26
6 Sep
2023
10:51
13 Oct
2023
13:57
8 Nov
2023
16:38
1 Dec
2023
15:06
15 Jan
2024
10:56
1 Feb
2024
10:38
7 Mar
2024
14:36
5 Jun
2024
13:58
3 Jul
2024
15:48
0061pH7.617.947.296.97.147.297.57.127.57.51
0076Temperature of Water°C13.816.115.811.88.58.49.41112.714.5
0077Conductivity at 25 Cμs/cm253258230229247241303238242246
0111Ammoniacal Nitrogen as Nmg/l0.031< 0.03< 0.03< 0.030.036< 0.030.032< 0.030.0320.034
0116Nitrogen, Total Oxidised as Nmg/l4.54.43.34.45.65.555.44.84.7
0117Nitrate as Nmg/l4.484.43.294.45.595.494.995.44.794.69
0118Nitrite as Nmg/l0.02< 0.0040.008< 0.0040.00530.00730.0077< 0.0040.00880.011
0119Ammonia un-ionised as Nmg/l0.00031< 0.00075< 0.00017< 5.0e-058.0e-05< 0.00010.00018< 8.0e-050.000230.00028
0162Alkalinity to pH 4.5 as CaCO3mg/l35363938353436343334
0180Orthophosphate, reactive as Pmg/l0.0350.0270.0530.0150.0160.0130.0210.0120.0190.023
9901Oxygen, Dissolved, % Saturation%95.496.894.296.894.897.694.697.896.398
9924Oxygen, Dissolved as O2mg/l9.859.519.3110.511.111.410.810.810.29.96

Samples from 13 Oct 2022 to 6 Jul 2023

NotationDeterminandUnits13 Oct
2022
15:08
3 Nov
2022
09:28
1 Dec
2022
10:55
18 Jan
2023
12:23
1 Feb
2023
11:37
1 Mar
2023
16:20
5 Apr
2023
09:44
22 May
2023
10:04
9 Jun
2023
09:56
6 Jul
2023
09:17
0061pH7.217.047.127.097.197.417.177.37.47.35
0076Temperature of Water°C12.611.89.88.89.47.910.510.814.513.9
0077Conductivity at 25 Cμs/cm260244245302243245243240245250
0111Ammoniacal Nitrogen as Nmg/l< 0.03< 0.03< 0.03< 0.030.0670.039< 0.03< 0.03< 0.03< 0.03
0116Nitrogen, Total Oxidised as Nmg/l2.92.566.15.555.855.14.6
0117Nitrate as Nmg/l2.92.495.996.095.484.995.84.995.094.59
0118Nitrite as Nmg/l< 0.0040.00680.00820.00720.0190.0080.0050.00560.0060.0066
0119Ammonia un-ionised as Nmg/l< 0.00011< 7.0e-05< 7.0e-05< 6.0e-050.000180.00016< 9.0e-05< 0.00012< 0.00019< 0.00017
0162Alkalinity to pH 4.5 as CaCO3mg/l38393633333433333434
0180Orthophosphate, reactive as Pmg/l0.0260.0420.0180.0180.0230.0150.0110.0180.0230.024
9901Oxygen, Dissolved, % Saturation%9495.798.597.796.697.497.79796100
9924Oxygen, Dissolved as O2mg/l9.9710.311.211.31111.510.910.79.7610.3