sampling point
Salmon Brook Above Deephams Stw
| Description | SALMON BROOK ABOVE DEEPHAMS STW |
|---|---|
| Sampling point ID | TH-PLER0129 |
| Type | Freshwater – Rivers |
| Status | open |
| Location |
easting northing: 535472 193197 lat lon: 51.621291, -0.044474 |
| Area | Hertfordshire And North London |
| Sub-Area | L&W Herts & North London |
| Summary | 297 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.
45 determinands have been measured at this site
- 4-nonPhenol
- Action taken
- Alky pH 4.5
- Aluminium-Al
- Ammonia(N)
- AmoniaTotYSI
- Anthracene
- Arsenic - As
- BOD ATU
- Cadmium - Cd
- Chloride Ion
- Chloroform
- Chromium -Cr
- Cond @ 20C
- Cond @ 25C
- Copper - Cu
- Cu Filtered
- Cyanide - CN
- Dtrgt NncSyn
- Fluoranthene
- GCMS S-Vol
- Lead - as Pb
- MR Screen
- Mercury - Hg
- N Oxidised
- NH3 un-ion
- NO FLOW/SAMP
- Nickel - Ni
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Octyl Phenol
- Orthophospht
- Oxygen Diss
- SI-D
- SI-GQA
- Sld Sus@105C
- Temp Water
- TriBT Cation
- Triclosan
- Type of Flow
- Zinc - as Zn
- pH
- pH in-situ
- ptOctylPheno
Sampling results
Displaying the twenty most recent samples. You can see all 297 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 1 Aug 2023 to 15 Jul 2024
| Notation | Determinand | Units | 1 Aug 2023 10:22 | 1 Sep 2023 11:49 | 3 Oct 2023 12:32 | 10 Nov 2023 11:30 | 11 Dec 2023 09:54 | 8 Jan 2024 10:38 | 1 Feb 2024 11:57 | 1 Mar 2024 10:21 | 18 Jun 2024 13:56 | 15 Jul 2024 08:56 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.55 | 7.35 | 7.71 | 7.86 | 8.04 | 8.03 | 8.01 | 7.9 | 7.79 | 7.48 | |
| 0076 | Temperature of Water | °C | 16.4 | 17 | 16.5 | 9.6 | 8.1 | 5.4 | 7.4 | 6.9 | 18.6 | 15.2 |
| 0077 | Conductivity at 25 C | μs/cm | 690 | 198 | 450 | 559 | 463 | 568 | 729 | 407 | 847 | 763 |
| 0085 | BOD : 5 Day ATU | mg/l | < 3 | < 4 | ||||||||
| 0111 | Ammoniacal Nitrogen as N | mg/l | 1.2 | 0.29 | 0.15 | 0.28 | 0.06 | 0.14 | 0.23 | 0.63 | 1 | |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 2.9 | 0.97 | 1.9 | 2.6 | 2.2 | 3 | 2.9 | 1.4 | 5.6 | 5 |
| 0117 | Nitrate as N | mg/l | 2.45 | 0.906 | 1.81 | 2.53 | 2.18 | 2.97 | 2.8 | 1.36 | 4.9 | 4.61 |
| 0118 | Nitrite as N | mg/l | 0.45 | 0.064 | 0.09 | 0.072 | 0.022 | 0.034 | 0.1 | 0.038 | 0.7 | 0.39 |
| 0119 | Ammonia un-ionised as N | mg/l | 0.0126 | 0.00202 | 0.00229 | 0.00361 | 0.00095 | 0.00182 | 0.00266 | 0.0134 | 0.0082 | |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 180 | 49 | 130 | 160 | 120 | 150 | 180 | 95 | 210 | 210 |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.42 | 0.22 | 0.55 | 0.2 | 0.14 | 0.14 | 0.28 | 0.11 | 0.28 | 0.41 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 49.2 | 60.5 | 65.6 | 86 | 93.1 | 92.5 | 80.9 | 95.5 | 90.4 | 39.6 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 4.8 | 5.83 | 6.39 | 9.78 | 11 | 11.7 | 9.71 | 11.6 | 8.43 | 3.97 |
Samples from 28 Oct 2022 to 5 Jul 2023
| Notation | Determinand | Units | 28 Oct 2022 12:11 | 15 Nov 2022 12:51 | 7 Dec 2022 13:45 | 31 Jan 2023 14:14 | 24 Feb 2023 11:22 | 6 Mar 2023 14:55 | 21 Apr 2023 09:42 | 2 May 2023 10:19 | 1 Jun 2023 10:04 | 5 Jul 2023 10:10 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.6 | 7.58 | 7.84 | 7.58 | 7.84 | 7.83 | 7.42 | 7.73 | 7.62 | 7.56 | |
| 0076 | Temperature of Water | °C | 15.1 | 12.6 | 10.1 | 11 | 6.6 | 9.8 | 10.2 | 12 | 12.8 | 15.7 |
| 0077 | Conductivity at 25 C | μs/cm | 736 | 519 | 842 | 833 | 915 | 863 | 845 | 913 | 835 | 358 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.32 | 0.56 | 1.1 | 0.7 | 0.35 | 1.3 | 1.8 | 1.1 | 1 | 0.16 |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 4.1 | 2.6 | 7 | 7.7 | 3.7 | 6.4 | 4.9 | 6.4 | 5.7 | 1.4 |
| 0117 | Nitrate as N | mg/l | 3.98 | 2.51 | 6.44 | 7.37 | 3.65 | 5.99 | 4.31 | 5.94 | 5.23 | 1.35 |
| 0118 | Nitrite as N | mg/l | 0.12 | 0.092 | 0.56 | 0.33 | 0.054 | 0.41 | 0.59 | 0.46 | 0.47 | 0.049 |
| 0119 | Ammonia un-ionised as N | mg/l | 0.00343 | 0.00476 | 0.0141 | 0.00529 | 0.00346 | 0.0159 | 0.00888 | 0.0126 | 0.00945 | 0.00163 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 180 | 120 | 220 | 200 | 200 | 230 | 210 | 210 | 230 | 91 |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.41 | 0.25 | 0.36 | 0.31 | 0.3 | 0.38 | 0.3 | 0.27 | 0.41 | 0.23 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 54.4 | 74.2 | 76.3 | 73.7 | 81.3 | 82.1 | 42 | 85.4 | 46.9 | 47.6 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 5.46 | 7.87 | 8.58 | 8.11 | 9.95 | 9.29 | 4.71 | 9.18 | 4.95 | 4.72 |