sampling point
Nazeing Brook At Nazeing Rd
| Description | NAZEING BROOK AT NAZEING RD |
|---|---|
| Sampling point ID | TH-PLER0100 |
| Type | Freshwater – Unspecified |
| Status | open |
| Location |
easting northing: 538430 206040 lat lon: 51.735975, 0.003315 |
| Area | Hertfordshire And North London |
| Sub-Area | L&W Herts & North London |
| Summary | 114 samples taken between 2022 and 2010 |
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.
16 determinands have been measured at this site
- Alky pH 4.5
- Ammonia(N)
- BOD ATU
- Chloride Ion
- Cond @ 25C
- N Oxidised
- NH3 un-ion
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Oil & Grs Vs
- Orthophospht
- Oxygen Diss
- Temp Water
- TurbidityNTU
- pH
Sampling results
Displaying the twenty most recent samples. You can see all 114 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 15 Jun 2021 to 21 Mar 2022
| Notation | Determinand | Units | 15 Jun 2021 11:33 | 20 Jul 2021 12:53 | 16 Sep 2021 12:10 | 22 Oct 2021 09:28 | 18 Nov 2021 14:41 | 21 Dec 2021 11:57 | 28 Jan 2022 14:43 | 11 Feb 2022 11:24 | 3 Mar 2022 13:16 | 21 Mar 2022 13:24 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 8.01 | 7.88 | 8 | 7.98 | 7.88 | 8.03 | 8.05 | 8.15 | 7.95 | 8.46 | |
| 0076 | Temperature of Water | °C | 17.1 | 20 | 15.4 | 9.9 | 8.7 | 6.4 | 5 | 4.8 | 7.8 | 8.3 |
| 0077 | Conductivity at 25 C | μs/cm | 2086 | 2259 | 888 | 639 | 1189 | 1070 | 1148 | 1139 | 627 | 1199 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.074 | 0.095 | < 0.03 | < 0.03 | < 0.03 | < 0.03 | 0.13 | 0.069 | 0.094 | 0.033 |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 85 | 110 | 12 | 7 | 8 | 6.6 | 5.7 | 10 | 6.5 | 14 |
| 0117 | Nitrate as N | mg/l | 84.3 | 110 | 12 | 6.97 | 7.74 | 6.56 | 5.64 | 10 | 6.48 | 14 |
| 0118 | Nitrite as N | mg/l | 0.73 | 0.34 | 0.027 | 0.031 | 0.26 | 0.039 | 0.056 | < 0.004 | 0.025 | 0.048 |
| 0119 | Ammonia un-ionised as N | mg/l | 0.00226 | 0.00274 | < 0.00081 | < 0.00052 | < 0.00038 | < 0.00042 | 0.00164 | 0.00086 | 0.0013 | 0.00053 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 270 | 220 | 220 | 170 | 310 | 290 | 290 | 250 | 180 | 270 |
| 0180 | Orthophosphate, reactive as P | mg/l | 3.1 | 4.9 | 0.5 | 0.31 | 0.97 | 0.78 | 0.68 | 0.89 | 0.19 | 1.2 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 75.2 | 79 | 73.6 | 94.2 | 71.6 | 87.7 | 90.9 | 90.5 | 93.5 | 135 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 7.23 | 7.17 | 7.34 | 10.6 | 8.32 | 10.8 | 11.6 | 11.6 | 11.1 | 15.8 |
Samples from 19 Jul 2019 to 18 May 2021
| Notation | Determinand | Units | 19 Jul 2019 10:58 | 16 Aug 2019 13:42 | 13 Sep 2019 13:13 | 9 Oct 2019 11:59 | 15 Nov 2019 12:30 | 11 Dec 2019 12:35 | 17 Jan 2020 14:00 | 5 Feb 2020 13:14 | 4 Mar 2020 11:49 | 18 May 2021 11:46 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.93 | 7.91 | 7.54 | 7.87 | 8.06 | 8.08 | 8.01 | 8.18 | 8.1 | 7.95 | |
| 0076 | Temperature of Water | °C | 15.5 | 15.3 | 15.7 | 12.2 | 7.5 | 6.5 | 7.8 | 4.9 | 5.7 | 12.4 |
| 0077 | Conductivity at 25 C | μs/cm | 1212 | 1545 | 1911 | 884 | 730 | 833 | 402 | 775 | 686 | 1075 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.1 | 0.038 | 0.046 | 0.14 | 0.153 | 0.074 | 0.1 | 0.076 | 0.086 | 0.65 |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 41 | 59 | 58 | 11 | 12.8 | 9 | 4.7 | 6.4 | 5.6 | 58 |
| 0117 | Nitrate as N | mg/l | 40.9 | 58.8 | 57.6 | 10.8 | 12.7 | 8.95 | 4.68 | 6.36 | 5.57 | 57.4 |
| 0118 | Nitrite as N | mg/l | 0.13 | 0.18 | 0.44 | 0.16 | 0.0707 | 0.047 | 0.016 | 0.042 | 0.026 | 0.57 |
| 0119 | Ammonia un-ionised as N | mg/l | 0.00233 | 0.00083 | 0.00045 | 0.00224 | 0.00232 | 0.00104 | 0.00155 | 0.00095 | 0.00114 | 0.0126 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 200 | 210 | 270 | 200 | 157 | 190 | 120 | 210 | 190 | 120 |
| 0180 | Orthophosphate, reactive as P | mg/l | 4.4 | 3.6 | 4.6 | 0.86 | 0.195 | 0.26 | 0.16 | 0.27 | 0.2 | 0.38 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 73.3 | 71.6 | 62.2 | 78.1 | 90.3 | 91.2 | 91.3 | 102.8 | 99.2 | 96 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 7.29 | 7.15 | 6.16 | 8.36 | 10.8 | 11.2 | 10.8 | 13.1 | 12.4 | 10.2 |