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sampling point
River Allen At Knightsmill Bridge

Description RIVER ALLEN (CAMEL) AT KNIGHTSMILL BRIDGE
Sampling point ID SW-82540170
Type Freshwater – Rivers
Status open
Location easting northing: 207130 80630
lat lon: 50.593453, -4.726355
Area Devon And Cornwall
Sub-Area West Devon And Cornwall
Summary 200 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.

70 determinands have been measured at this site
  • Action taken
  • Al- Filtered
  • Alky pH 4.5
  • Aluminium-Al
  • Ammonia(N)
  • Arsenic - As
  • As-Filtered
  • B - Filtered
  • BOD ATU
  • Ba- Filtered
  • Barium - Ba
  • Boron - as B
  • C - Org Filt
  • Ca Filtered
  • Cadmium - Cd
  • Calcium - Ca
  • Cd Filtered
  • Chloride Ion
  • Chromium -Cr
  • Cond @ 20C
  • Cond @ 25C
  • Copper - Cu
  • Cr- Filtered
  • Cu Filtered
  • Fe- Filt
  • Hardness
  • Hdnss Ca
  • Hdnss Mg
  • IonicBalance
  • Iron - as Fe
  • K- Filtered
  • Lead - as Pb
  • Lithium - Li
  • Lithium Filt
  • Magnesium-Mg
  • Manganse-Mn
  • Mg Filtered
  • Mn- Filtered
  • N Inorganic
  • N Oxidised
  • NH3 un-ion
  • Na- Filtered
  • Ni- Filtered
  • Nickel - Ni
  • Nitrate-N
  • Nitrite-N
  • O Diss %sat
  • Orthophospht
  • OrthophsFilt
  • Oxygen Diss
  • Pb Filtered
  • Phosphate
  • Phosphorus-P
  • Potassium- K
  • SO4dis
  • SiO2 Rv
  • Sld NV@500C
  • Sld Sus@105C
  • Sodium - Na
  • Strontium-Sr
  • StrontumFilt
  • Sulphate SO4
  • Temp Water
  • TurbidityNTU
  • Type of Flow
  • WethPresPrec
  • Zinc - as Zn
  • Zn- Filtered
  • pH
  • pH in-situ

Sampling results

Displaying the twenty most recent samples. You can see all 200 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 21 Aug 2023 to 10 Jul 2024

NotationDeterminandUnits21 Aug
2023
11:43
5 Sep
2023
11:33
19 Oct
2023
15:20
6 Nov
2023
10:06
4 Dec
2023
10:56
17 Jan
2024
09:48
1 Feb
2024
10:02
5 Mar
2024
10:36
5 Jun
2024
10:57
10 Jul
2024
10:52
0061pH7.67.457.327.397.517.527.657.477.827.51
0076Temperature of Water°C1516.113.911.89.47.18.59.412.114.4
0077Conductivity at 25 Cμs/cm258275242216200262260228283284
0111Ammoniacal Nitrogen as Nmg/l0.03< 0.030.0820.0620.25< 0.03< 0.030.043< 0.03< 0.03
0116Nitrogen, Total Oxidised as Nmg/l4.13.93.73.5354.53.84.54.4
0117Nitrate as Nmg/l4.083.893.693.492.994.994.53.794.494.39
0118Nitrite as Nmg/l0.0160.0130.0110.00740.0120.0110.00470.00850.0110.0081
0119Ammonia un-ionised as Nmg/l0.00032< 0.000250.000420.000320.00143< 0.00015< 0.000220.00022< 0.00042< 0.00025
0162Alkalinity to pH 4.5 as CaCO3mg/l51504340384748435152
0180Orthophosphate, reactive as Pmg/l0.0380.0320.042< 0.010.0740.0190.020.0290.030.03
9901Oxygen, Dissolved, % Saturation%97.596.796.396.91009898.29897.296.4
9924Oxygen, Dissolved as O2mg/l9.819.59.9210.511.411.811.511.210.49.82

Samples from 3 Nov 2022 to 5 Jul 2023

NotationDeterminandUnits 3 Nov
2022
10:38
1 Dec
2022
12:14
24 Jan
2023
15:33
7 Feb
2023
15:14
3 Mar
2023
09:23
5 Apr
2023
11:20
21 Apr
2023
09:55
17 May
2023
12:23
13 Jun
2023
11:32
5 Jul
2023
10:47
0061pH7.117.487.47.577.757.497.597.647.577.4
0076Temperature of Water°C11.710.48.38.54.810.59.212.415.913.7
0077Conductivity at 25 Cμs/cm236232258270256238252255292293
0111Ammoniacal Nitrogen as Nmg/l0.0790.0420.034< 0.03< 0.03< 0.03< 0.03< 0.03< 0.030.062
0116Nitrogen, Total Oxidised as Nmg/l3.14.154.84.74.24.44.34.54.1
0117Nitrate as Nmg/l3.094.094.984.794.694.194.44.294.494.09
0118Nitrite as Nmg/l0.0120.00950.0160.0110.00690.01< 0.0040.00520.0150.0074
0119Ammonia un-ionised as Nmg/l0.000210.000240.00014< 0.00018< 0.00021< 0.00018< 0.0002< 0.00029< 0.000320.00038
0162Alkalinity to pH 4.5 as CaCO3mg/l35384348454046455253
0180Orthophosphate, reactive as Pmg/l0.0460.0260.0230.0190.0120.0230.0140.0250.0420.063
9901Oxygen, Dissolved, % Saturation%98.399.297.599.7100.299.196.198.498.496.1
9924Oxygen, Dissolved as O2mg/l10.611.111.411.612.8111110.59.719.94