Woodside Wigmore CSO

Storm overflow run by Southern Water, discharging into The Otterham Creek.

Storm overflow on the sewer network Gillingham and Rainham constituency
Right now
Not discharging
Last discharge ended on (7 days ago).
Times are UK time. Company feed updated 4 min ago

"Not discharging" means the company's monitor reports no discharge right now — not that the water is clean. The feed publishes status only; no discharge volume is measured.

2026 so far
9spills
5.9 h discharging on 9 days · counted by us, not yet official
2025 official
15spills
12 h · +88% on 2024
Rank in Southern Water
#336
of 970 overflows by 2025 spills (1 = most)
Monitor in 2025
100% working
Long-term average 15.2 spills a year

Year by year

The Environment Agency's official annual returns, counted the EA's way (12/24-hour spills). 2026 is our own running count, the same way, from Southern Water's monitor log and the live feed. The official figure is published next spring.

2021
33 spills · 58 hmonitor 100%
2022
16 spills · 49 hmonitor 99.8%
2023
19 spills · 8.5 hmonitor 99.9%
2024
8 spills · 4.6 hmonitor 99.9%
2025
15 spills · 12 hmonitor 100%
2026so far
9 spills · 5.9 h

A spill is the EA's 12/24-hour count: the first 12 hours of a discharge count as one, each further 24 hours with discharge as one more. "Monitor" is the share of that year the monitor was working, so a 0 beside a working monitor is a real zero; "no data" means the monitor produced no usable data that year — not zero. Years before 2024 are matched to this site by name and location, because the EA's site IDs changed that year; a monitor figure beside one of them means the outlet's permit confirms the match.

Other outlets here

Southern Water runs 6 other overflows within 300 m that also discharge into The Otterham Creek. They share the sewer and the storm, so one outlet's figures are only part of what reaches the water.

0m Broomcroft Road, Gillingham CSOSWS00113Asquith Road Wigmore CSO - 108577 9spills in 2025
0m Broomcroft Road, Gillingham CSOSWS00114Broomcroft Road Gillingham CSO - 108593 7spills in 2025
0m Chalky Bank Road Gillingham CSOSWS00158Chalky Bank Road Gillingham CSO - 108600 0spills in 2025
0m Station Road Rainham CSOSWS00827Station Road Rainham CSO - 108738 30spills in 2025
0m Maidstone Road Rainham CSOSWS00538Maidstone Road Rainham CSO - 108676 26spills in 2025
0m Orchard Street Gillingham CSOSWS00630Orchard Street Gillingham CSO - 108694 9spills in 2025

This overflow (Woodside Wigmore CSO - 108761): 15 spills in 2025. Distances are between the published outlet points. The names in brackets are Southern Water's own, from its return.

What the 2025 return says

From Southern Water's annual return to the Environment Agency for this overflow.

High-spill review
High spill threshold not met
Long-term review
Not asset maintenance - Hydraulic capacity
Investigation
UWWTR investigation ongoing
Improvement work
No improvement action in reporting period
Monitored since
2016
Water body
MEDWAY

"High spill threshold not met" means this overflow did not spill often enough to trigger the EA's formal high-spill review for that year. It is not a statement that the spills were harmless.

Discharges we have recorded

35 discharge periods since 22 Sep 2024. 35 of them come from Southern Water's own event-duration-monitoring records (from its Rivers and Seas Watch service, Sep 2024 – Oct 2026); the live feed adds anything after that. The official annual count is the figure to quote.

Show 25 earlier
StartedEndedDischarge time
1 h 38 min
29 min
37 min
1 h 11 min
3 h 10 min
56 min
22 min
22 min
15 min
25 min
51 min
23 min
1 h 4 min
31 min
31 min
6 min
37 min
10 min
7 min
29 min
36 min
9 min
14 min
6 min
42 min

The year figures above use the EA's 12/24-hour counting method, so they are comparable with the official figures; the monitor log's 44 raw blocks were merged into 35 continuous discharge periods (gaps under 15 min joined).

What the feed showed

FloodRadar's own record of every change of state Southern Water's live feed has shown for this overflow, kept since : 1 state. The feed publishes its status now and its latest discharge, nothing older; the discharges above are read from this. It is here so the figures can be checked.

Show the last 1 states
SeenStatusSinceLatest discharge
Not discharging →

Rain nearby last 30 days

Nearest live rain gauge: Rainfall gauge nr Rainham, 0.9 km away. Brown shading = when this overflow was discharging; ▼ = a discharge start.

Overflow shading is a timing match, not proof of cause — heavy rain and spills share a trigger. Times come from the water company’s event-duration monitor (site status only; no discharge volume is published).

Where it is

Nearest river gauge
Riddles Lane (Groundwater Level) · 8.1 km
Nearest rain gauge
Council area
Medway (B)
Southern Water's own name for it
Woodside Wigmore CSO - 108761
Site reference
SWS00966 · permit EPR/DB3796WZ
Coordinates
51.37638, 0.62375

Tell me when this overflow discharges

One message when the company's monitor reports a new discharge here. At most one every 6 hours.

Setting this alert needs JavaScript. The alerts you already have are on your alerts page.

The alert repeats the monitor's status: whether the overflow is discharging, not how much or why. It can only tell you about a discharge that starts after you turn it on.

Concerned about this overflow?

Report pollution you can see or smell to the regulator straight away; the company handles complaints about the overflow itself.

Write to the MP

The Environment Agency's return places this overflow in the Gillingham and Rainham constituency. An MP can ask the company and the regulator questions on a constituent's behalf. These words carry the official figures; change them as you like.

The link opens Parliament's own "Find your MP", which gives the MP's name and how to write to them. FloodRadar sends nothing and keeps nothing you write. Check the constituency against your own address: an MP acts only for people who live in it.

Live status: © Southern Water storm overflow activity data, licensed under CC BY 4.0. Annual spill figures: Environment Agency Event Duration Monitoring return, © Environment Agency copyright and/or database right, Open Government Licence (OGL) v3.0. Spill-event history: Southern Water's Rivers and Seas Watch release history (riversandseaswatch.southernwater.co.uk), © Southern Water. Shown by FloodRadar: only releases Southern Water marks Genuine and that have ended; those it marks Not Genuine or still has under review are left out. Discharges marked "via Top of the Poops", come from Top of the Poops' record of the same company feed, used under CC BY-SA 4.0: the feed's own start and end times as its pages print them, not their derived hours. Times are shown in UK local time. FloodRadar republishes the monitor's status and the EA's figures; it does not measure discharges itself. Constituency and council area from the EA's return: contains OS data © Crown copyright and database right 2026.