sampling point
Rib At A10 New Bridge
| Description | RIB AT A10 NEW BRIDGE |
|---|---|
| Sampling point ID | TH-PLER0122 |
| Type | Freshwater – Rivers |
| Status | open |
| Location |
easting northing: 538190 225820 lat lon: 51.913766, 0.007729 |
| Area | Hertfordshire And North London |
| Sub-Area | L&W Herts & North London |
| Summary | 258 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.
44 determinands have been measured at this site
- Action taken
- Alky pH 4.5
- Ammonia(N)
- BOD ATU
- C - Org Filt
- Ca Filtered
- Calcium - Ca
- Cd Filtered
- Chloride Ion
- Cond @ 20C
- Cond @ 25C
- Copper - Cu
- Cr- Filtered
- Cu BLM Bio
- Cu Filtered
- Fe- Filt
- Hardness
- Magnesium-Mg
- Mn BLM Bio
- Mn- Filtered
- N Oxidised
- NH3 un-ion
- NO FLOW/SAMP
- Ni BLM Bio
- Ni- Filtered
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Oil & Grs Vs
- Orthophospht
- Oxygen Diss
- Pb BLM Bio
- Pb Filtered
- Phenol Odour
- SI-EC-F
- SI-GQA
- Sld Sus@105C
- Temp Water
- Type of Flow
- Zinc - as Zn
- Zn BLM Bio
- Zn- Filtered
- pH
- pH in-situ
Sampling results
Displaying the twenty most recent samples. You can see all 258 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 1 Jun 2023 to 6 Mar 2024
| Notation | Determinand | Units | 1 Jun 2023 10:22 | 3 Jul 2023 11:41 | 1 Aug 2023 11:08 | 1 Sep 2023 08:16 | 4 Oct 2023 14:01 | 3 Nov 2023 11:05 | 5 Dec 2023 09:30 | 4 Jan 2024 10:59 | 2 Feb 2024 08:33 | 6 Mar 2024 09:06 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.86 | 7.85 | 7.85 | 7.77 | 7.76 | 8.1 | 7.98 | 7.97 | 7.9 | 7.87 | |
| 0076 | Temperature of Water | °C | 11.1 | 12.4 | 13.5 | 12.4 | 12.7 | 10.5 | 6.6 | 8 | 8 | 8.2 |
| 0077 | Conductivity at 25 C | μs/cm | 857 | 848 | 805 | 828 | 789 | 700 | 755 | 751 | 848 | 817 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | < 0.03 | < 0.03 | < 0.03 | < 0.03 | < 0.03 | 0.039 | < 0.03 | 0.031 | 0.056 | 0.41 |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 13 | 12 | 10 | 12 | 10 | 19 | 16 | 12 | 13 | 11 |
| 0117 | Nitrate as N | mg/l | 13 | 12 | 9.98 | 12 | 9.99 | 19 | 16 | 12 | 13 | 10.9 |
| 0118 | Nitrite as N | mg/l | 0.028 | 0.027 | 0.017 | 0.017 | 0.015 | 0.018 | 0.014 | 0.016 | 0.05 | 0.096 |
| 0119 | Ammonia un-ionised as N | mg/l | < 0.00043 | < 0.00046 | < 0.0005 | < 0.00039 | < 0.00039 | 0.00074 | < 0.00041 | 0.00046 | 0.0007 | 0.00488 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 280 | 270 | 270 | 260 | 250 | 230 | 250 | 270 | 270 | 290 |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.79 | 1 | 0.99 | 0.98 | 1.1 | 0.14 | 0.18 | 0.17 | 0.61 | 0.33 |
| 9901 | Oxygen, Dissolved, % Saturation | % | 93.6 | 92.5 | 91.8 | 91.3 | 91.3 | 98.5 | 97.1 | 95.1 | 95.8 | 93.9 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 10.3 | 9.86 | 9.54 | 9.73 | 9.66 | 11 | 11.9 | 11.2 | 11.3 | 11 |
Samples from 11 Aug 2022 to 30 May 2023
| Notation | Determinand | Units | 11 Aug 2022 14:35 | 8 Sep 2022 11:56 | 3 Oct 2022 13:39 | 2 Nov 2022 14:21 | 1 Dec 2022 13:28 | 19 Jan 2023 12:27 | 3 Feb 2023 12:14 | 16 Mar 2023 14:34 | 27 Apr 2023 13:15 | 30 May 2023 11:51 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.97 | 7.96 | 7.71 | 8.02 | 7.89 | 7.88 | 7.99 | 8.05 | 7.83 | ||
| 0076 | Temperature of Water | °C | 16.8 | 14.9 | 11.3 | 8.4 | 5.9 | 9.1 | 9.2 | 10 | 11.2 | |
| 0077 | Conductivity at 25 C | μs/cm | 898 | 753 | 636 | 882 | 889 | 860 | 817 | 839 | 847 | |
| 0111 | Ammoniacal Nitrogen as N | mg/l | < 0.03 | < 0.03 | < 0.03 | < 0.03 | 0.13 | < 0.03 | < 0.03 | < 0.03 | < 0.03 | |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 14 | 10 | 8.6 | 14 | 14 | 14 | 12 | 13 | 13 | |
| 0117 | Nitrate as N | mg/l | 14 | 9.98 | 8.57 | 14 | 13.9 | 13.9 | 12 | 13 | 13 | |
| 0118 | Nitrite as N | mg/l | 0.021 | 0.021 | 0.027 | 0.041 | 0.074 | 0.054 | 0.014 | 0.023 | 0.032 | |
| 0119 | Ammonia un-ionised as N | mg/l | < 0.00084 | < 0.00072 | < 0.00031 | < 0.00049 | 0.00137 | < 0.00039 | < 0.0005 | < 0.00055 | < 0.00041 | |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 270 | 240 | 190 | 270 | 270 | 280 | 260 | 290 | 270 | |
| 0180 | Orthophosphate, reactive as P | mg/l | 1.9 | 1.5 | 1.4 | 1.2 | 0.55 | 0.8 | 0.33 | 0.61 | 0.8 | |
| 7668 | No flow /No sample | 0 | ||||||||||
| 9901 | Oxygen, Dissolved, % Saturation | % | 96.5 | 87.7 | 79.6 | 91 | 96.2 | 97.2 | 102.3 | 93.5 | 94.8 | |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 9.34 | 8.84 | 8.7 | 10.7 | 12 | 11.2 | 11.7 | 10.5 | 10.4 |