Gibbs Brook Chat Hill
EA name: GIBBS BROOK CHAT HILL (also listed as “CHAT HILL GIBBS BROOK”)
Environment Agency sampling point SO-E0000900 · 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
- 21 Sep 2026, 12:1010 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 18 since 1 Apr 2025 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives) · results completed 23 Sep 2026
- Where
- National Grid 537634, 148965As published, to the nearest 1 m. Open in a map
- River, by its own name
- Gibbs Brook
- River, by the map
- Gibbs BrookPlaced on the river its name gives, 1 m from the line.
- Next gauge downstream
- Edenbridge On the Eden Tributary Medway · 13 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (18 samples)
Results here were completed a median of 2 days after the sample was taken (2 to 7 days, 13 samples).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
92%
Sampled 21 Sep 2026, 10 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 12:10 | 92 | 92% |
| 10 Aug 2026, 12:01 | 84.9 | 84.9% |
| 10 Jul 2026, 10:41 | 88.8 | 88.8% |
| 17 Jun 2026, 09:03 | 83.4 | 83.4% |
| 13 May 2026, 11:56 | 94.4 | 94.4% |
| 1 Apr 2026, 10:43 | 105.6 | 105.6% |
| 12 Mar 2026, 11:35 | 98 | 98% |
| 23 Feb 2026, 13:36 | 95.7 | 95.7% |
| 2 Jan 2026, 10:28 | 90.5 | 90.5% |
| 2 Dec 2025, 14:25 | 92.3 | 92.3% |
| 5 Nov 2025, 12:15 | 92.1 | 92.1% |
| 14 Oct 2025, 14:08 | 89.6 | 89.6% |
| 2 Sep 2025, 10:14 | 88.4 | 88.4% |
| 11 Aug 2025, 13:31 | 91.6 | 91.6% |
| 2 Jul 2025, 11:37 | 85.5 | 85.5% |
| 12 Jun 2025, 08:22 | 85.6 | 85.6% |
| 9 May 2025, 12:59 | 95.7 | 95.7% |
| 1 Apr 2025, 10:18 | 101 | 101% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.42 mg/l
Sampled 21 Sep 2026, 10 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 12:10 | 9.42 | 9.42 mg/l |
| 10 Aug 2026, 12:01 | 7.86 | 7.86 mg/l |
| 10 Jul 2026, 10:41 | 7.93 | 7.93 mg/l |
| 17 Jun 2026, 09:03 | 7.97 | 7.97 mg/l |
| 13 May 2026, 11:56 | 10.3 | 10.3 mg/l |
| 1 Apr 2026, 10:43 | 12 | 12 mg/l |
| 12 Mar 2026, 11:35 | 11.1 | 11.1 mg/l |
| 23 Feb 2026, 13:36 | 11 | 11 mg/l |
| 2 Jan 2026, 10:28 | 11.9 | 11.9 mg/l |
| 2 Dec 2025, 14:25 | 10.8 | 10.8 mg/l |
| 5 Nov 2025, 12:15 | 9.79 | 9.79 mg/l |
| 14 Oct 2025, 14:08 | 9.42 | 9.42 mg/l |
| 2 Sep 2025, 10:14 | 8.89 | 8.89 mg/l |
| 11 Aug 2025, 13:31 | 8.61 | 8.61 mg/l |
| 2 Jul 2025, 11:37 | 7.69 | 7.69 mg/l |
| 12 Jun 2025, 08:22 | 8.54 | 8.54 mg/l |
| 9 May 2025, 12:59 | 9.99 | 9.99 mg/l |
| 1 Apr 2025, 10:18 | 11.5 | 11.5 mg/l |
Water temperature
code 0076 · °C
14.2 °C
Sampled 21 Sep 2026, 10 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 12:10 | 14.2 | 14.2 °C |
| 10 Aug 2026, 12:01 | 19 | 19 °C |
| 10 Jul 2026, 10:41 | 20.8 | 20.8 °C |
| 17 Jun 2026, 09:03 | 17.4 | 17.4 °C |
| 13 May 2026, 11:56 | 11.4 | 11.4 °C |
| 1 Apr 2026, 10:43 | 9.7 | 9.7 °C |
| 12 Mar 2026, 11:35 | 9.6 | 9.6 °C |
| 23 Feb 2026, 13:36 | 9.3 | 9.3 °C |
| 2 Jan 2026, 10:28 | 3.8 | 3.8 °C |
| 2 Dec 2025, 14:25 | 8.6 | 8.6 °C |
| 5 Nov 2025, 12:15 | 12.5 | 12.5 °C |
| 14 Oct 2025, 14:08 | 13 | 13 °C |
| 2 Sep 2025, 10:14 | 15 | 15 °C |
| 11 Aug 2025, 13:31 | 18.2 | 18.2 °C |
| 2 Jul 2025, 11:37 | 20.4 | 20.4 °C |
| 12 Jun 2025, 08:22 | 15.4 | 15.4 °C |
| 9 May 2025, 12:59 | 13.3 | 13.3 °C |
| 1 Apr 2025, 10:18 | 9.7 | 9.7 °C |
pH
code 0061
8.37
Sampled 21 Sep 2026, 10 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 12:10 | 8.37 | 8.37 |
| 10 Aug 2026, 12:01 | 7.87 | 7.87 |
| 10 Jul 2026, 10:41 | 7.82 | 7.82 |
| 17 Jun 2026, 09:03 | 7.93 | 7.93 |
| 13 May 2026, 11:56 | 8.01 | 8.01 |
| 1 Apr 2026, 10:43 | 8.24 | 8.24 |
| 12 Mar 2026, 11:35 | 8.12 | 8.12 |
| 23 Feb 2026, 13:36 | 7.87 | 7.87 |
| 2 Jan 2026, 10:28 | 7.93 | 7.93 |
| 2 Dec 2025, 14:25 | 7.58 | 7.58 |
| 5 Nov 2025, 12:15 | 7.87 | 7.87 |
| 14 Oct 2025, 14:08 | 8.15 | 8.15 |
| 2 Sep 2025, 10:14 | 8.03 | 8.03 |
| 11 Aug 2025, 13:31 | 8.02 | 8.02 |
| 2 Jul 2025, 11:37 | 7.93 | 7.93 |
| 12 Jun 2025, 08:22 | 8.01 | 8.01 |
| 9 May 2025, 12:59 | 8.03 | 8.03 |
| 1 Apr 2025, 10:18 | 8.16 | 8.16 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 21 Sep 2026, 10 days ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 12:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Aug 2026, 12:01 | 0.19 | 0.19 mg/l |
| 10 Jul 2026, 10:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jun 2026, 09:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 May 2026, 11:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Apr 2026, 10:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Mar 2026, 11:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Feb 2026, 13:36 | 0.031 | 0.031 mg/l |
| 2 Jan 2026, 10:28 | 0.35 | 0.35 mg/l |
| 2 Dec 2025, 14:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Nov 2025, 12:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Oct 2025, 14:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Sep 2025, 10:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Aug 2025, 13:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jul 2025, 11:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Jun 2025, 08:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 May 2025, 12:59 | 0.036 | 0.036 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
8.59 mg/l
Sampled 21 Sep 2026, 10 days ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 12:10 | 8.59 | 8.59 mg/l |
| 10 Aug 2026, 12:01 | 7.8 | 7.8 mg/l |
| 10 Jul 2026, 10:41 | 8.49 | 8.49 mg/l |
| 17 Jun 2026, 09:03 | 6.48 | 6.48 mg/l |
| 13 May 2026, 11:56 | 7.07 | 7.07 mg/l |
| 1 Apr 2026, 10:43 | 5.15 | 5.15 mg/l |
| 12 Mar 2026, 11:35 | 5.49 | 5.49 mg/l |
| 23 Feb 2026, 13:36 | 7.07 | 7.07 mg/l |
| 2 Jan 2026, 10:28 | 6.93 | 6.93 mg/l |
| 2 Dec 2025, 14:25 | 7.87 | 7.87 mg/l |
| 5 Nov 2025, 12:15 | 6.19 | 6.19 mg/l |
| 14 Oct 2025, 14:08 | 5.89 | 5.89 mg/l |
| 2 Sep 2025, 10:14 | 3.39 | 3.39 mg/l |
| 11 Aug 2025, 13:31 | 4.89 | 4.89 mg/l |
| 2 Jul 2025, 11:37 | 4.18 | 4.18 mg/l |
| 12 Jun 2025, 08:22 | 4.87 | 4.87 mg/l |
| 9 May 2025, 12:59 | 5.65 | 5.65 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.18 mg/l
Sampled 21 Sep 2026, 10 days ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 12:10 | 0.18 | 0.18 mg/l |
| 10 Aug 2026, 12:01 | 0.1 | 0.1 mg/l |
| 10 Jul 2026, 10:41 | 0.093 | 0.093 mg/l |
| 17 Jun 2026, 09:03 | 0.1 | 0.1 mg/l |
| 13 May 2026, 11:56 | 0.1 | 0.1 mg/l |
| 1 Apr 2026, 10:43 | 0.02 | 0.02 mg/l |
| 12 Mar 2026, 11:35 | 0.036 | 0.036 mg/l |
| 23 Feb 2026, 13:36 | 0.12 | 0.12 mg/l |
| 2 Jan 2026, 10:28 | 0.13 | 0.13 mg/l |
| 2 Dec 2025, 14:25 | 0.14 | 0.14 mg/l |
| 5 Nov 2025, 12:15 | 0.15 | 0.15 mg/l |
| 14 Oct 2025, 14:08 | 0.17 | 0.17 mg/l |
| 2 Sep 2025, 10:14 | 0.08 | 0.08 mg/l |
| 11 Aug 2025, 13:31 | 0.079 | 0.079 mg/l |
| 2 Jul 2025, 11:37 | 0.085 | 0.085 mg/l |
| 12 Jun 2025, 08:22 | 0.096 | 0.096 mg/l |
| 9 May 2025, 12:59 | 0.12 | 0.12 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
746 µS/cm
Sampled 21 Sep 2026, 10 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 12:10 | 746 | 746 µS/cm |
| 10 Aug 2026, 12:01 | 711 | 711 µS/cm |
| 10 Jul 2026, 10:41 | 674 | 674 µS/cm |
| 17 Jun 2026, 09:03 | 663 | 663 µS/cm |
| 13 May 2026, 11:56 | 685 | 685 µS/cm |
| 1 Apr 2026, 10:43 | 597 | 597 µS/cm |
| 12 Mar 2026, 11:35 | 623 | 623 µS/cm |
| 23 Feb 2026, 13:36 | 570 | 570 µS/cm |
| 2 Jan 2026, 10:28 | 686 | 686 µS/cm |
| 2 Dec 2025, 14:25 | 572 | 572 µS/cm |
| 5 Nov 2025, 12:15 | 593 | 593 µS/cm |
| 14 Oct 2025, 14:08 | 653 | 653 µS/cm |
| 2 Sep 2025, 10:14 | 603 | 603 µS/cm |
| 11 Aug 2025, 13:31 | 582 | 582 µS/cm |
| 2 Jul 2025, 11:37 | 642 | 642 µS/cm |
| 12 Jun 2025, 08:22 | 639 | 639 µS/cm |
| 9 May 2025, 12:59 | 609 | 609 µS/cm |
| 1 Apr 2025, 10:18 | 612 | 612 µS/cm |
Everything measured here
12 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 12 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 18 | Apr 2025 – Sep 2026 | 92% 21 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 18 | Apr 2025 – Sep 2026 | 9.42 mg/l 21 Sep 2026 |
| Temperature of Water 0076 | River water | 18 | Apr 2025 – Sep 2026 | 14.2 °C 21 Sep 2026 |
| pH 0061 | River water | 18 | Apr 2025 – Sep 2026 | 8.37 21 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 17 | May 2025 – Sep 2026 | below 0.03 mg/l 21 Sep 2026 |
| Nitrate as N 0117 | River water | 17 | May 2025 – Sep 2026 | 8.59 mg/l 21 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 17 | May 2025 – Sep 2026 | 0.18 mg/l 21 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 18 | Apr 2025 – Sep 2026 | 746 µS/cm 21 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 17 | May 2025 – Sep 2026 | 200 mg/l 21 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 17 | May 2025 – Sep 2026 | below 0.00074 mg/l 21 Sep 2026 |
| Nitrite as N 0118 | River water | 17 | May 2025 – Sep 2026 | 0.0098 mg/l 21 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 17 | May 2025 – Sep 2026 | 8.6 mg/l 21 Sep 2026 |
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.