Sewage Map

Smithy Wood Crescent/CSO

Storm overflow operated by Yorkshire Water. The source names River Sheaf as the receiving water.

2
Spills in 2025
1.5
Recorded hours
99.8%
Monitor operation
6
Years listed

The reported spill count was 1 higher than in 2024. This compares event counts, not discharge volume.

Current status unknown

Checking the latest monitor report…

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How it compares in 2025

Smithy Wood Crescent/CSO recorded 2 spills in 2025. That is more than 21% of the 14,239 overflows in England with a reported figure, and ranks 10,428th nationally. Among Yorkshire Water overflows it ranks 1,707th of 2,176; the median Yorkshire Water overflow recorded 16 spills. On the River Sheaf from Source to River Porter waterbody it ranks 20th of 23.

GroupRank by spillsMedian spillsMedian hours
This outlet–21.5
England10,428th of 14,2391122.3
Yorkshire Water1,707th of 2,1761637.8
River Sheaf from Source to River Porter20th of 231851

Rank 1 has the most spills. Equal counts share a rank. Only overflows with a reported count are ranked. Counts do not measure volume, so a higher rank does not mean more sewage.

Annual spill history

02020n/a2021n/a2022220231202422025
From 2020 to 2025, the reported count went from 0 to 2 spills. The highest count was 2 in 2023 and the lowest was 0 in 2020. The monitor worked for less than 90% of 2020, 2023, so those counts may be low.Amber bars mark years when the monitor worked for less than 90% of the year.
YearSpillsDurationMonitor operationSource
202521.5 hours99.8%Official data
202410.3 hours98.9%Official data
202320.8 hours74.1%Low coverageOfficial data
2022UnknownUnknown0%Low coverageOfficial data
2021UnknownUnknown0%Low coverageOfficial data
202000 hours0%Low coverageOfficial data

A missing figure means the source did not provide a usable value. A zero is shown as zero. Monitor operation below 90% can make comparison less reliable.

Outlet details

Water company
Yorkshire Water
Outlet type
Storm overflow on the sewer network
Permit
WRA9196
Activity reference
A1
Grid reference
SK3450883739
Waterbody ID
GB104027057750Official waterbody record ↗
Location source
Official annual grid reference
Location precision
About 1 metres
Location note
Unknown

About the name and type

The annual return lists this asset as “SO on sewer network”: storm overflow on the sewer network. The return places this overflow on the sewer network.

The waterbody link opens the Environment Agency record for the exact ID in the return. It is a source lookup; we do not import its classification.

Where it is

The recorded position is about 3.1 km south-west of the Sheffield reference point in the ONS built-up areas data.

Area and water pages

Check the official record

Public access to this outlet is unknown. Do not enter restricted land or use this page as a route guide.

Open official source ↗

Other outlet records nearby

Questions about Smithy Wood Crescent/CSO

Who operates Smithy Wood Crescent/CSO?
Yorkshire Water is the operator named in the annual record. The permit reference is WRA9196.
Where does Smithy Wood Crescent/CSO discharge?
The source names River Sheaf as the receiving water. This does not show how far a discharge travelled.
How many times did Smithy Wood Crescent/CSO spill in 2025?
The 2025 return records 2 counted spill events and 1.5 hours of recorded discharge. Spills are counted with the 12/24-hour method, so this is not a count of every start signal.
Can I trust the 2025 figures for this outlet?
The monitor worked for 99.8% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
Is Smithy Wood Crescent/CSO discharging right now?
This record is linked to a company live feed. The panel above shows the latest report we hold, with its date. That report can be old, and the monitor can be offline, so check the date before relying on it. A report that no discharge is taking place is not a water-quality result.
How accurate is the map marker?
The marker comes from the grid reference in the official annual return, which is accurate to about 1 metres. It shows the recorded outlet position, not the extent of any discharge.
What kind of outlet is Smithy Wood Crescent/CSO?
The annual return lists the asset type as “SO on sewer network”, which means storm overflow on the sewer network. The return places this overflow on the sewer network.
How does Smithy Wood Crescent/CSO compare with other overflows?
Smithy Wood Crescent/CSO recorded 2 spills in 2025. That is more than 21% of the 14,239 overflows in England with a reported figure, and ranks 10,428th nationally. Among Yorkshire Water overflows it ranks 1,707th of 2,176; the median Yorkshire Water overflow recorded 16 spills. On the River Sheaf from Source to River Porter waterbody it ranks 20th of 23. Ranks compare counted spill events only. They do not compare volume or harm.
Does zero spills mean the water was safe?
No. A zero means the annual return recorded zero counted spill events for this outlet and year. It is not a water-quality test, and pollution can come from other sources.