Cogden Gill downstream of Smales Gill
EA name: COGDEN GILL D/S SMALES GILL
Environment Agency sampling point NE-49905216 · Freshwater - rivers · listed as open (“open” does not mean it is sampled now)
These are samples taken on a date, not live readings of the river. Results reach the Environment Agency's archive days to months after the sample is taken, so the newest here may be weeks or months old. FloodRadar does not grade them.
Where and when
- Last sampled
- 4 Mar 2024, 11:052.6 years ago · time as the Environment Agency records it (UK clock time; the source gives no time zone). Not sampled since, as far as the archive shows: the Environment Agency was asked up to 30 Sep 2026 and had nothing newer.
- Samples banked
- 7 since 25 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 404837, 496514As published, to the nearest 1 m. Open in a map
- River, by its own name
- Cogden Gill
- River, by the map
- Cogden GillPlaced on the river its name gives, 5 m from the line.
- Next gauge downstream
- Richmond Lownthwaite Bridge On the River Swale · 15 km along the river
- Why it was sampled
- Monitoring (national agency policy) (7 samples)
Main measurements, river water
Water temperature
code 0076 · °C
4.7 °C
Sampled 4 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2024, 11:05 | 4.7 | 4.7 °C |
| 14 Feb 2024, 10:51 | 6.1 | 6.1 °C |
| 2 Jan 2024, 12:01 | 5.7 | 5.7 °C |
| 4 Dec 2023, 09:26 | 5.3 | 5.3 °C |
| 30 Nov 2023, 10:40 | 5 | 5 °C |
| 8 Nov 2023, 11:03 | 8 | 8 °C |
| 25 Oct 2023, 08:33 | 7.6 | 7.6 °C |
pH
code 0061
7.3
Sampled 4 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2024, 11:05 | 7.3 | 7.3 |
| 14 Feb 2024, 10:51 | 7.8 | 7.8 |
| 2 Jan 2024, 12:01 | 7.4 | 7.4 |
| 4 Dec 2023, 09:26 | 8.2 | 8.2 |
| 30 Nov 2023, 10:40 | 8.1 | 8.1 |
| 8 Nov 2023, 11:03 | 8.1 | 8.1 |
| 25 Oct 2023, 08:33 | 8.1 | 8.1 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 4 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2024, 11:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Feb 2024, 10:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jan 2024, 12:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Dec 2023, 09:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 Nov 2023, 10:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Nov 2023, 11:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Oct 2023, 08:33 | <0.03 | below 0.03 mg/l (not detected above this) |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.017 mg/l
Sampled 4 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2024, 11:05 | 0.017 | 0.017 mg/l |
| 14 Feb 2024, 10:51 | <0.01 | below 0.01 mg/l (not detected above this) |
| 2 Jan 2024, 12:01 | <0.01 | below 0.01 mg/l (not detected above this) |
| 4 Dec 2023, 09:26 | <0.01 | below 0.01 mg/l (not detected above this) |
| 30 Nov 2023, 10:40 | <0.01 | below 0.01 mg/l (not detected above this) |
| 8 Nov 2023, 11:03 | <0.01 | below 0.01 mg/l (not detected above this) |
| 25 Oct 2023, 08:33 | <0.01 | below 0.01 mg/l (not detected above this) |
Conductivity
at 25 °C · code 0077 · µS/cm
399 µS/cm
Sampled 4 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2024, 11:05 | 399 | 399 µS/cm |
| 14 Feb 2024, 10:51 | 110 | 110 µS/cm |
| 2 Jan 2024, 12:01 | 67 | 67 µS/cm |
| 4 Dec 2023, 09:26 | 265 | 265 µS/cm |
| 30 Nov 2023, 10:40 | 171 | 171 µS/cm |
| 8 Nov 2023, 11:03 | 164 | 164 µS/cm |
| 25 Oct 2023, 08:33 | 180 | 180 µS/cm |
Everything measured here
54 determinands, each kept by its code, unit and sample material: results in different units or on different materials are never mixed. A “below” result is under the laboratory's detection limit, not zero.
Show all 54 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Temperature of Water 0076 | River water | 7 | Oct 2023 – Mar 2024 | 4.7 °C 4 Mar 2024 |
| pH 0061 | River water | 7 | Oct 2023 – Mar 2024 | 7.3 4 Mar 2024 |
| Ammoniacal Nitrogen as N 0111 | River water | 7 | Oct 2023 – Mar 2024 | below 0.03 mg/l 4 Mar 2024 |
| Orthophosphate, reactive as P 0180 | River water | 7 | Oct 2023 – Mar 2024 | 0.017 mg/l 4 Mar 2024 |
| Conductivity at 25 C 0077 | River water | 7 | Oct 2023 – Mar 2024 | 399 µS/cm 4 Mar 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 7 | Oct 2023 – Mar 2024 | 130 mg/l 4 Mar 2024 |
| Barium 6062 | River water | 7 | Oct 2023 – Mar 2024 | 130 µg/l 4 Mar 2024 |
| Barium, Dissolved 9446 | River water | 7 | Oct 2023 – Mar 2024 | 120 µg/l 4 Mar 2024 |
| Boron 6059 | River water | 7 | Oct 2023 – Mar 2024 | below 100 µg/l 4 Mar 2024 |
| Boron, Dissolved 9447 | River water | 7 | Oct 2023 – Mar 2024 | below 100 µg/l 4 Mar 2024 |
| Cadmium 0108 | River water | 7 | Oct 2023 – Mar 2024 | 0.087 µg/l 4 Mar 2024 |
| Cadmium, Dissolved 0106 | River water | 7 | Oct 2023 – Mar 2024 | 0.062 µg/l 4 Mar 2024 |
| Calcium 0241 | River water | 7 | Oct 2023 – Mar 2024 | 59 mg/l 4 Mar 2024 |
| Calcium, Dissolved 0239 | River water | 7 | Oct 2023 – Mar 2024 | 59 mg/l 4 Mar 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 7 | Oct 2023 – Mar 2024 | 5.6 mg/l 4 Mar 2024 |
| Chloride 0172 | River water | 7 | Oct 2023 – Mar 2024 | 9.7 mg/l 4 Mar 2024 |
| Chromium 3164 | River water | 7 | Oct 2023 – Mar 2024 | below 0.5 µg/l 4 Mar 2024 |
| Chromium, Dissolved 3409 | River water | 7 | Oct 2023 – Mar 2024 | below 0.5 µg/l 4 Mar 2024 |
| Copper 6452 | River water | 7 | Oct 2023 – Mar 2024 | 2.8 µg/l 4 Mar 2024 |
| Copper : BLM Bioavailable 4821 | River water | 7 | Oct 2023 – Mar 2024 | 0.1 µg/l 4 Mar 2024 |
| Copper, Dissolved 6450 | River water | 7 | Oct 2023 – Mar 2024 | 2.6 µg/l 4 Mar 2024 |
| Hardness, Total as CaCO3 0158 | River water | 7 | Oct 2023 – Mar 2024 | 164 mg/l 4 Mar 2024 |
| Ionic Balance 7044 | River water | 7 | Oct 2023 – Mar 2024 | 4.53% 4 Mar 2024 |
| Iron 6051 | River water | 7 | Oct 2023 – Mar 2024 | 370 µg/l 4 Mar 2024 |
| Iron, Dissolved 6460 | River water | 7 | Oct 2023 – Mar 2024 | 35 µg/l 4 Mar 2024 |
| Lead 0050 | River water | 7 | Oct 2023 – Mar 2024 | 1.8 µg/l 4 Mar 2024 |
| Lead : BLM Bioavailable 3377 | River water | 7 | Oct 2023 – Mar 2024 | 0.03 µg/l 4 Mar 2024 |
| Lead, Dissolved 0052 | River water | 7 | Oct 2023 – Mar 2024 | 0.15 µg/l 4 Mar 2024 |
| Lithium 6064 | River water | 7 | Oct 2023 – Mar 2024 | below 100 µg/l 4 Mar 2024 |
| Lithium, Dissolved 4201 | River water | 7 | Oct 2023 – Mar 2024 | below 100 µg/l 4 Mar 2024 |
| Magnesium 0237 | River water | 7 | Oct 2023 – Mar 2024 | 4.1 mg/l 4 Mar 2024 |
| Magnesium, Dissolved 0235 | River water | 7 | Oct 2023 – Mar 2024 | 4 mg/l 4 Mar 2024 |
| Manganese 6050 | River water | 7 | Oct 2023 – Mar 2024 | 35 µg/l 4 Mar 2024 |
| Manganese : BLM Bioavailable 4820 | River water | 7 | Oct 2023 – Mar 2024 | 3 µg/l 4 Mar 2024 |
| Manganese, Dissolved 6458 | River water | 7 | Oct 2023 – Mar 2024 | 12 µg/l 4 Mar 2024 |
| Nickel 6462 | River water | 7 | Oct 2023 – Mar 2024 | 2.5 µg/l 4 Mar 2024 |
| Nickel : BLM Bioavailable 3878 | River water | 7 | Oct 2023 – Mar 2024 | 0.47 µg/l 4 Mar 2024 |
| Nickel, Dissolved 3410 | River water | 7 | Oct 2023 – Mar 2024 | 2.1 µg/l 4 Mar 2024 |
| Nitrite as N 0118 | River water | 7 | Oct 2023 – Mar 2024 | 0.0067 mg/l 4 Mar 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 7 | Oct 2023 – Mar 2024 | 5.7 mg/l 4 Mar 2024 |
| pH : In Situ 3169 | River water | 1 | Nov 2023 – Nov 2023 | 8.2 30 Nov 2023 |
| Potassium 0211 | River water | 7 | Oct 2023 – Mar 2024 | 1.1 mg/l 4 Mar 2024 |
| Potassium, Dissolved 0209 | River water | 7 | Oct 2023 – Mar 2024 | 1.1 mg/l 4 Mar 2024 |
| Silica, reactive as SiO2 0182 | River water | 7 | Oct 2023 – Mar 2024 | 5 mg/l 4 Mar 2024 |
| Sodium 0207 | River water | 7 | Oct 2023 – Mar 2024 | 18 mg/l 4 Mar 2024 |
| Sodium, Dissolved 0205 | River water | 7 | Oct 2023 – Mar 2024 | 18 mg/l 4 Mar 2024 |
| Solids, Suspended at 105 C 0135 | River water | 7 | Oct 2023 – Mar 2024 | 41 mg/l 4 Mar 2024 |
| Strontium 6063 | River water | 7 | Oct 2023 – Mar 2024 | 190 µg/l 4 Mar 2024 |
| Strontium, Filtered 6693 | River water | 7 | Oct 2023 – Mar 2024 | 180 µg/l 4 Mar 2024 |
| Sulphate as SO4 0183 | River water | 7 | Oct 2023 – Mar 2024 | 22 mg/l 4 Mar 2024 |
| Sulphate, Dissolved as SO4 7859 | River water | 7 | Oct 2023 – Mar 2024 | 21 mg/l 4 Mar 2024 |
| Zinc 6455 | River water | 7 | Oct 2023 – Mar 2024 | 9.5 µg/l 4 Mar 2024 |
| Zinc : BLM Bioavailable 4822 | River water | 7 | Oct 2023 – Mar 2024 | 2.2 µg/l 4 Mar 2024 |
| Zinc, Dissolved 3408 | River water | 7 | Oct 2023 – Mar 2024 | 5.4 µg/l 4 Mar 2024 |
FloodRadar does not grade these results: there is no overall score, and official river classifications are a separate dataset. A sample taken downstream of an overflow does not by itself show where anything in it came from. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels.
Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.
Contains OS data © Crown copyright and database rights 2026.