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⏱ Last reading 2h ago
0.11

Letcombe Bassett

Letcombe Brook
Vale of White Horse catchment • Letcombe Bassett • Oxfordshire • ID: 1761TH • Level
(2h ago) • 4 readings/hr • 132 views

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Last Level
0.109 mASD
⚠ 2h ago · may be out of date
24h Max
0.110 mASD
24h Min
0.108 mASD
Typical Range
0.06 - 0.20
mASD
Highest Recorded
0.57 mASD
31 Oct 2013
Since Dec 1990
Current level is 19% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Steady over 5h
23 Aug 22:00 ▬ steady 0.109 mASD
23 Aug 21:45 ▬ steady 0.109 mASD
23 Aug 21:30 ▲ +0.1 cm 0.109 mASD
23 Aug 21:15 ▼ -0.1 cm 0.108 mASD
23 Aug 21:00 ▬ steady 0.109 mASD
23 Aug 20:45 ▬ steady 0.109 mASD
23 Aug 20:30 ▬ steady 0.109 mASD
23 Aug 20:15 ▲ +0.1 cm 0.109 mASD
23 Aug 20:00 ▬ steady 0.108 mASD
23 Aug 19:45 ▬ steady 0.108 mASD
23 Aug 19:30 ▬ steady 0.108 mASD
23 Aug 19:15 ▬ steady 0.108 mASD
23 Aug 19:00 ▼ -0.1 cm 0.108 mASD
23 Aug 18:45 ▬ steady 0.109 mASD
23 Aug 18:30 ▲ +0.1 cm 0.109 mASD
23 Aug 18:15 ▬ steady 0.108 mASD
23 Aug 18:00 ▬ steady 0.108 mASD
23 Aug 17:45 ▬ steady 0.108 mASD
23 Aug 17:30 ▼ -0.1 cm 0.108 mASD
23 Aug 17:15 0.109 mASD

Rainfall & Weather

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Flood history near this gauge

Official Environment Agency warnings issued since 2008 for the 7 flood areas linked to this gauge (nearest 1.9 km away).

4flood warnings 131flood alerts

Most recent flood warning: 4 Jan 2024River Lambourn from Upper Lambourn to Great Shefford

Year by year
YearWarningsAlerts
2026 0 42
2025 0 3
2024 1 17
2023 1 14
2022 0 1
2021 0 5
2020 0 7
2019 0 4
2018 1 3
2017 0 1
2016 0 5
2015 0 1
2014 1 6
2013 0 5
2012 0 9
2011 0 1
2010 0 3
2009 0 3
2008 0 1

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 Letcombe Bassett flood history.

Nearby Stations

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Station Details

  • Monitoring Station: Letcombe Bassett
  • Watercourse: Letcombe Brook
  • Nearest Town: Letcombe Bassett
  • County: Oxfordshire
  • Nearest reservoir: Farmoor (21.7 km) · 92.0% full (as of 31 Jul 2026)
  • Coordinates: 51°33'56"N 1°27'38"W (51.565511, -1.460667)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 1 Jan 1990
  • Status: Active
  • Station Type: River level station
  • Station Reference: 1761TH
  • EA Gauge ID: 1761TH-level-stage-i-15_min-mASD
  • Parameter: Level
  • Unit: mASD
  • Typical rise rate: 0 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: Vale of White Horse
  • Typical Range: 0.058 – 0.198 mASD
  • Drainage Area: 4.0 km² upstream of this gauge
  • Flow Data: Available (m³/s) via EA Hydrology
  • EA Cross-check: 0.11 mASD (EA at 23 Aug 22:00)
  • Flow Archive: National River Flow Archive ↗

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

Catchment Character

🌊 Groundwater-fed Slow and steady — fed largely by groundwater, so levels change gradually, not in sudden spikes.

Your catchment is all the land that drains rainfall into the river above this gauge. Its character — how steep, wet, wooded, urban or chalky that land is — decides how fast rain here turns into a rising river. A steep, bare or clay catchment is “flashy” (rises and falls quickly, floods easily); a flat, chalk or well-wooded one is slow and steady. The tiles below put numbers to that; the flow-duration curve reads left-to-right from the river’s typical high flows (Q5) down to its low flows (Q95) — a steep curve means a flashy river.

The physical character of the land that drains to this gauge, and how it shapes its flood response — from the National River Flow Archive (UKCEH).

Baseflow Index
0.96
groundwater-fed — slow & steady
Avg Annual Rainfall
777 mm/yr
1991–2020 · +4% since 1941–70
Urban Extent
0.5%
largely rural
Highest Recorded Flow
0.523 m³/s
14 Apr 2024
Flow-Duration Curve
mean 0.1010.2750.0750.0145% (high)% of days exceeded95% (low)
Daily flow (m³/s) exceeded each % of the time — a steep curve is flashy, a flat one is steady. Q5 high · Q50 median · Q95 low.
Land Cover (2023)
Woodland 3%Grassland 48%Arable 47%Urban 2%
Grassland 53% → 48% since 1990

Flow affected by: groundwater abstraction.

Photos

Gauging-station photographs from the National River Flow Archive (UKCEH).

Photos © NRFA / UKCEH & the measuring authority — shown at web resolution. Full gallery on the NRFA ↗

About this gauge

The gauging station is located in the upper section of Letcombe Brook, just downstream of Letcombe Brook at Arabellas Lake (39112).

More detail

The catchment

Rural catchment on scarp slope of the Lambourn Downs (Chalk - Drift free except for peat on the highest hills in the south). Catchment area derived from a Digital Terrain Model.

The station

Flat V weir (3.0m wide) superseded original rectangular notch (1.0 m wide) in 1981.

Flow regime

Baseflow-dominated regime. Runoff suggests that the topographic catchment is considerably smaller than the actual contributing area. Flows substantially reduced by pumping from the Childrey Warren boreholes (groundwater pumping). This can impact substantially on low flow patterns. The alleviation of low flows scheme was implemented in 1992.

The flow record

Gw augmentation noticeable (eg. 2004).

Descriptions from the National River Flow Archive (UKCEH). NRFA station record ↗

Gauge Details

How this gauging station is built and how long it has measured (NRFA / UKCEH).

Gauge type
Flat-V weir
Operating since
1971
Station datum
105.6 mAOD
Flow record
1971–2024 · 53 yrs · 99% complete
Hydrometric area
39
Measured by
Environment Agency

Frequently asked questions

Is the Letcombe Brook at Letcombe Bassett flooding today?

The current level is 0.11m, which is within the typical range of 0.06 to 0.20m. Flooding is unlikely at this level.

Is the river level rising or falling at Letcombe Bassett?

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.

What is a normal level for the Letcombe Brook at Letcombe Bassett?

The typical range at this station is 0.06m to 0.20m, based on Environment Agency historical data. Levels above 0.20m 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:

Check any UK postcode’s flood risk →

🏠 Buying or renting around here? Get the Property Flood-Risk Report for any English postcode — official risk band, floods since 1946, warning history, river behaviour and nearby storm overflows. £19 one-off. Learn more →