sampling point
River Waldon At Waldon Bridge
| Description | RIVER WALDON AT WALDON BRIDGE |
|---|---|
| Sampling point ID | SW-72934639 |
| Type | Freshwater – Rivers |
| Status | open |
| Location |
easting northing: 236840 110410 lat lon: 50.870101, -4.320178 |
| Area | Devon And Cornwall |
| Sub-Area | East Devon And Cornwall |
| Summary | 138 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.
30 determinands have been measured at this site
- Action taken
- Alky pH 4.5
- Ammonia(N)
- BOD ATU
- Calcium - Ca
- Cond @ 25C
- Cu Filtered
- Dtrgt NncSyn
- DtrgtAncSyn
- GCMS S-Vol
- Hardness
- Hdnss Ca
- Hdnss Mg
- Magnesium-Mg
- N Inorganic
- N Oxidised
- NH3 un-ion
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Orthophospht
- Oxygen Diss
- Potassium- K
- Sld NV@500C
- Sld Sus@105C
- Temp Water
- Type of Flow
- WethPresPrec
- Zinc - as Zn
- pH
Sampling results
Displaying the twenty most recent samples. You can see all 138 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 20 Oct 2023 to 2 Sep 2024
Samples from 12 Oct 2022 to 28 Sep 2023
| Notation | Determinand | Units | 12 Oct 2022 11:21 | 15 Nov 2022 12:08 | 12 Dec 2022 11:29 | 19 Jan 2023 11:22 | 3 Feb 2023 10:59 | 22 Mar 2023 11:33 | 9 May 2023 13:02 | 1 Jun 2023 14:56 | 31 Aug 2023 13:30 | 28 Sep 2023 12:01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.31 | 7.1 | 7.78 | 7.33 | 7.4 | 7.1 | 7.51 | 7.56 | 7.38 | 7.33 | |
| 0076 | Temperature of Water | °C | 10.2 | 11.7 | 2.3 | 5.9 | 8.9 | 10 | 12.6 | 14.9 | 14.2 | 13.9 |
| 0077 | Conductivity at 25 C | μs/cm | 226 | 197 | 204 | 198 | 197 | 160 | 166 | 187 | 189 | 189 |
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.34 | 0.24 | 0.078 | 0.25 | 0.11 | 0.16 | < 0.03 | 0.27 | < 0.03 | |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 2.6 | 2.8 | 3.3 | 5.1 | 3.4 | 3.4 | 2.7 | 3.1 | 2.5 | 3.6 |
| 0117 | Nitrate as N | mg/l | 2.59 | 2.77 | 3.27 | 5.08 | 3.34 | 3.38 | 2.67 | 3.09 | 2.48 | 3.6 |
| 0118 | Nitrite as N | mg/l | 0.0066 | 0.032 | 0.035 | 0.019 | 0.06 | 0.018 | 0.034 | 0.014 | 0.024 | 0.0047 |
| 0119 | Ammonia un-ionised as N | mg/l | 0.0009 | 0.0015 | 0.00023 | 0.00107 | 0.00026 | 0.00116 | < 0.00029 | 0.00164 | < 0.00016 | |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 41 | 37 | 29 | 24 | 33 | 28 | 34 | 36 | 41 | 31 |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.13 | 0.052 | 0.033 | 0.078 | 0.06 | 0.079 | 0.079 | 0.12 | 0.045 | |
| 9901 | Oxygen, Dissolved, % Saturation | % | 93.9 | 91 | 97.2 | 97.6 | 98.5 | 95.5 | 96.4 | 98.9 | 91 | 97.7 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 10.5 | 9.85 | 13.3 | 12.2 | 11.4 | 10.8 | 10.2 | 9.97 | 9.31 | 10.1 |