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22.36

Leeds Knostrop Weir Flood Alleviation Scheme

Aire ⚙ Structure
Aire and Calder catchment • Leeds Knostrop Weir • West Yorkshire • ID: L1705A • Level
(40m ago) • 1 reading/hr • 143 views

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Not an emergency service — if in danger call 999. Alerts rely on EA/SEPA data and are best-efforts. Terms

Current Level
22.358 mAOD
▬ Steady
24h Max
22.380 mAOD
24h Min
22.305 mAOD
Typical Range
22.36 - 22.98
mAOD
Highest Recorded
24.47 mAOD
23 Jan 2018
Since Oct 2017
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Flood predictions aren't generated for lock / structure gauges — their levels are driven by gate operation, not by catchment rainfall, so the forecast models would have no skill here.

Recent Readings

Rising · +1 cm over 6h
23 Aug 22:30 ▼ -0.4 cm 22.358 mAOD
23 Aug 21:15 ▼ -0.1 cm 22.362 mAOD
23 Aug 21:00 ▲ +0.2 cm 22.363 mAOD
23 Aug 20:45 ▬ steady 22.361 mAOD
23 Aug 20:30 ▬ steady 22.362 mAOD
23 Aug 20:15 ▲ +0.2 cm 22.362 mAOD
23 Aug 20:00 ▬ steady 22.360 mAOD
23 Aug 19:45 ▲ +0.2 cm 22.359 mAOD
23 Aug 19:30 ▲ +0.3 cm 22.357 mAOD
23 Aug 19:15 ▼ -0.2 cm 22.354 mAOD
23 Aug 19:00 ▲ +0.1 cm 22.356 mAOD
23 Aug 18:45 ▲ +0.1 cm 22.355 mAOD
23 Aug 18:30 ▲ +0.4 cm 22.354 mAOD
23 Aug 18:15 ▲ +0.2 cm 22.350 mAOD
23 Aug 18:00 ▼ -0.1 cm 22.348 mAOD
23 Aug 17:45 ▲ +0.3 cm 22.349 mAOD
23 Aug 17:30 ▬ steady 22.346 mAOD
23 Aug 17:15 ▲ +0.2 cm 22.346 mAOD
23 Aug 17:00 ▬ steady 22.344 mAOD
23 Aug 16:45 22.345 mAOD

Rainfall & Weather

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Flood history near this gauge

Official Environment Agency warnings issued since 2012 for the 23 flood areas linked to this gauge (nearest 0.8 km away).

6severe warnings 43flood warnings 0flood alerts

Most recent flood warning: 5 Dec 2024Gledhow Beck at Harehills

Year by year
YearSevereWarningsAlerts
2024 0 5 0
2023 0 1 0
2022 0 1 0
2020 0 10 0
2019 0 1 0
2017 0 3 0
2015 6 18 0
2013 0 2 0
2012 0 2 0

Warnings apply to a whole flood area, not necessarily this exact spot. Years before 2006 aren't covered by the EA's historic record. See also the Leeds Knostrop Weir flood history.

Nearby Stations

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Station Details

  • Monitoring Station: Leeds Knostrop Weir Flood Alleviation Scheme
  • Watercourse: River Aire
  • Nearest Town: Leeds Knostrop Weir
  • County: West Yorkshire
  • Nearest reservoir: Ardsley Esr (7.1 km) · 61.5% full (as of 10 Aug 2026)
  • Coordinates: 53°46'37"N 1°30'44"W (53.776902, -1.512119)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 14 Dec 2017
  • Status: Active
  • Station Type: River level station (multi-sensor)
  • Station Reference: L1705A
  • EA Gauge ID: L1705A-level-stage-i-15_min-mAOD
  • Parameter: Level
  • Unit: mAOD
  • Typical rise rate: 4 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~27 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: ⚙ Yes — lock, weir, sluice or pump
  • Catchment Area: Aire and Calder
  • Typical Range: 22.364 – 22.984 mAOD
  • EA Cross-check: 22.36 mAOD (EA at 23 Aug 22:00)

Geographic coordinates may reflect the access point for the gauge, and not the precise location in the watercourse that it is taking readings from.

Frequently asked questions

Is the River Aire at Leeds Knostrop Weir Flood Alleviation Scheme flooding today?

The current level is 22.36m, which is below the typical range. Flooding is very unlikely at this level.

Is the river level rising or falling at Leeds Knostrop Weir Flood Alleviation Scheme?

Based on the most recent readings, the level is currently steady. The chart above shows the last 7 days of measurements, updated roughly every 15 minutes.

Why is the level slowly falling?

When little or no rain has fallen for a while, a river level gradually drops as the water stored in the ground and soil drains away with nothing to replace it. This is called baseflow recession and is normal in dry spells. Only about 0.0mm of rain has fallen nearby in the last 7 days, so the flow is being sustained mainly by groundwater. A gentle decline like this is expected and is not a sign of a problem — downstream gauges often recede a little faster than headwaters further upstream, and levels recover once rain returns.

What is a normal level for the River Aire at Leeds Knostrop Weir Flood Alleviation Scheme?

The typical range at this station is 22.36m to 22.98m, based on Environment Agency historical data. Levels above 22.98m are higher than usually seen and may indicate a flood risk.

How often is this river level data updated?

Readings are taken by the Environment Agency gauge roughly every 15 minutes and FloodRadar refreshes its data continuously, so the level shown is normally less than an hour old.

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📮 Flood risk by postcode near this gauge

Postcodes within 5 km with properties in the Environment Agency’s rivers-and-sea flood-risk bands:

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