Rockland Broad Outflow

EA name: ROCKLAND BROAD OUTFLOW (also listed as “ROCKLAND BROAD OUTFLOW (SHORT DIKE)”)
Environment Agency sampling point AN-YAR31010 · 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
28 Sep 2026, 10:4110 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
8 since 27 Oct 2023 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
Latest sample
Pond / lake / reservoir water Planned investigation (local monitoring) · results completed 2 Oct 2026
Where
National Grid 633477, 305069As published, to the nearest 1 m. Open in a map
River, by its own name
Its name does not give one
River, by the map
Short DikePlaced by position alone, on a line whose map name differs from its own, 5 m from the line.
Next gauge downstream
Cantley On the River Yare · 6.8 km along the river
Nearest gauge upstream
Rockland St Mary On the River Yare · 0.7 km along the river
Why it was sampled
Planned investigation (local monitoring) (8 samples)

Results here were completed a median of 4 days after the sample was taken (4 to 8 days, 3 samples).

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

89.4%

Sampled 19 Feb 2024, 2.6 years ago · 3 results banked

5060708090%202420252026no sample published after Feb 202427 Oct 2023, 11:32: 58%7 Dec 2023, 10:16: 80.4%19 Feb 2024, 12:24: 89.4%

Also measured in percentage on another sample material (2GZZ): 5 results, kept apart (see the table).

Every result (3)
SampledResult as publishedReads as
19 Feb 2024, 12:2489.4 89.4%
7 Dec 2023, 10:1680.4 80.4%
27 Oct 2023, 11:3258 58%

Dissolved oxygen

as O2 · code 9924 · mg/l

9.98 mg/l

Sampled 19 Feb 2024, 2.6 years ago · 3 results banked

681012mg/l202420252026no sample published after Feb 202427 Oct 2023, 11:32: 6.44 mg/l7 Dec 2023, 10:16: 10.5 mg/l19 Feb 2024, 12:24: 9.98 mg/l

Also measured in milligram per litre on another sample material (2GZZ): 5 results, kept apart (see the table).

Every result (3)
SampledResult as publishedReads as
19 Feb 2024, 12:249.98 9.98 mg/l
7 Dec 2023, 10:1610.5 10.5 mg/l
27 Oct 2023, 11:326.44 6.44 mg/l

Water temperature

code 0076 · °C

10.4 °C

Sampled 19 Feb 2024, 2.6 years ago · 3 results banked

4681012°C202420252026no sample published after Feb 202427 Oct 2023, 11:32: 10.6 °C7 Dec 2023, 10:16: 4 °C19 Feb 2024, 12:24: 10.4 °C

Also measured in celsius on another sample material (2GZZ): 5 results, kept apart (see the table).

Every result (3)
SampledResult as publishedReads as
19 Feb 2024, 12:2410.4 10.4 °C
7 Dec 2023, 10:164 4 °C
27 Oct 2023, 11:3210.6 10.6 °C

pH

code 0061

8.26

Sampled 19 Feb 2024, 2.6 years ago · 3 results banked

7.47.67.888.28.4202420252026no sample published after Feb 202427 Oct 2023, 11:32: 7.557 Dec 2023, 10:16: 8.0419 Feb 2024, 12:24: 8.26

Also measured in ph units on another sample material (2GZZ): 5 results, kept apart (see the table).

Every result (3)
SampledResult as publishedReads as
19 Feb 2024, 12:248.26 8.26
7 Dec 2023, 10:168.04 8.04
27 Oct 2023, 11:327.55 7.55

Phosphate

orthophosphate, reactive, as P · code 0180 · mg/l

0.097 mg/l

Sampled 19 Feb 2024, 2.6 years ago · 3 results banked

0.080.10.120.140.160.18mg/l202420252026no sample published after Feb 202427 Oct 2023, 11:32: 0.17 mg/l7 Dec 2023, 10:16: 0.12 mg/l19 Feb 2024, 12:24: 0.097 mg/l
Every result (3)
SampledResult as publishedReads as
19 Feb 2024, 12:240.097 0.097 mg/l
7 Dec 2023, 10:160.12 0.12 mg/l
27 Oct 2023, 11:320.17 0.17 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

648 µS/cm

Sampled 19 Feb 2024, 2.6 years ago · 3 results banked

600700800900µS/cm202420252026no sample published after Feb 202427 Oct 2023, 11:32: 635 µS/cm7 Dec 2023, 10:16: 841 µS/cm19 Feb 2024, 12:24: 648 µS/cm

Also measured in microsiemens per centimetre on another sample material (2GZZ): 5 results, kept apart (see the table).

Every result (3)
SampledResult as publishedReads as
19 Feb 2024, 12:24648 648 µS/cm
7 Dec 2023, 10:16841 841 µS/cm
27 Oct 2023, 11:32635 635 µS/cm

Everything measured here

15 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 22 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 3 Oct 2023 – Feb 2024 89.4% 19 Feb 2024
Oxygen, Dissolved, % Saturation 9901 Pond / lake / reservoir water 5 Apr 2026 – Sep 2026 79.4% 28 Sep 2026
Oxygen, Dissolved as O2 9924 River water 3 Oct 2023 – Feb 2024 9.98 mg/l 19 Feb 2024
Oxygen, Dissolved as O2 9924 Pond / lake / reservoir water 5 Apr 2026 – Sep 2026 7.67 mg/l 28 Sep 2026
Temperature of Water 0076 River water 3 Oct 2023 – Feb 2024 10.4 °C 19 Feb 2024
Temperature of Water 0076 Pond / lake / reservoir water 5 Apr 2026 – Sep 2026 16.9 °C 28 Sep 2026
pH 0061 River water 3 Oct 2023 – Feb 2024 8.26 19 Feb 2024
pH 0061 Pond / lake / reservoir water 5 Apr 2026 – Sep 2026 7.96 28 Sep 2026
Orthophosphate, reactive as P 0180 River water 3 Oct 2023 – Feb 2024 0.097 mg/l 19 Feb 2024
Conductivity at 25 C 0077 River water 3 Oct 2023 – Feb 2024 648 µS/cm 19 Feb 2024
Conductivity at 25 C 0077 Pond / lake / reservoir water 5 Apr 2026 – Sep 2026 1078 µS/cm 28 Sep 2026
Nitrogen, Total as N 9686 River water 3 Oct 2023 – Feb 2024 4.8 mg/l 19 Feb 2024
Phosphorus, Total as P 0348 River water 3 Oct 2023 – Feb 2024 0.13 mg/l 19 Feb 2024
Alkalinity, Dissolved as CaCO3 7867 Pond / lake / reservoir water 5 Apr 2026 – Sep 2026 270 mg/l 28 Sep 2026
Ammoniacal Nitrogen, Filtered as N 9993 Pond / lake / reservoir water 5 Apr 2026 – Sep 2026 below 0.03 mg/l 28 Sep 2026
Chloride, GF/C Filtered 7190 Pond / lake / reservoir water 5 Apr 2026 – Sep 2026 130 mg/l 28 Sep 2026
Nitrite, Filtered as N 6485 Pond / lake / reservoir water 5 Apr 2026 – Sep 2026 0.009 mg/l 28 Sep 2026
Nitrogen, Total as N 9686 Pond / lake / reservoir water 5 Apr 2026 – Sep 2026 5.9 mg/l 28 Sep 2026
Nitrogen, Total Oxidised, Filtered as N 9943 Pond / lake / reservoir water 5 Apr 2026 – Sep 2026 5.1 mg/l 28 Sep 2026
Orthophosphate, Filtered as P 9856 Pond / lake / reservoir water 5 Apr 2026 – Sep 2026 0.22 mg/l 28 Sep 2026
Phosphorus, Total as P 0348 Pond / lake / reservoir water 5 Apr 2026 – Sep 2026 0.25 mg/l 28 Sep 2026
Silicate, Filtered as SiO2 9857 Pond / lake / reservoir water 5 Apr 2026 – Sep 2026 10 mg/l 28 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.