Vale of White Horse catchment
• Wasing • West Berkshire • ID: 2279TH • Level
(33m ago) • 4 readings/hr • 147 views
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You'll be notified when this gauge is rising more than 0.10 m/hr — a sign of rapidly increasing water levels.
You'll be notified when a new storm-overflow (sewage) discharge starts within ~3 km of this gauge, based on the water companies' near-real-time feeds.
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Not an emergency service — if in danger call 999. Alerts rely on
EA/SEPA/NRW data and are best-efforts. Terms
Current Level
0.099 mASD
▼ Easing
24h Max
0.116 mASD
24h Min
0.078 mASD
Typical Range
0.08 - 1.34
mASD
Highest Recorded
1.82 mASD
EA official record
A 4.83 reading (18 Jul 2022) sits in our unverified raw history and is not treated as the record
Current level is 5% of this
🚽Sewage overflows nearby
Recent Water Levels
🌍 floodradar.co.uk
1 day
EA forecast (official)
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.
River Flow
90 days
Daily mean discharge (m³/s) with the daily min–max band, from the EA Hydrology API. Flow is the volume of water passing the gauge — often a more direct flood signal than level.
Downstream level
7 days
The level on the DOWNSTREAM side of this lock/weir structure — a separate EA
measure from the main (upstream) reading shown on the Current tab. Threshold bands
are computed from this gauge's own downstream history.
Flow Data: Daily mean flow (m³/s) to 6 Oct (2 days behind — the EA publishes each day's mean a day or two after it ends; unchecked, provisional)via EA Hydrology
Storm overflows whose water reaches this gauge on the mapped river network, nearest first by distance along the river. The status is each water company's monitor: it says whether an overflow is discharging, not how much or what it contains.
1 storm overflow is traced upstream of this gauge, the nearest 9.3 km away along the river. 0 report discharging now, 1 reports not discharging.
Thames Water · into Briff Lane Stream · 5.4 km away in a straight line · its watercourse is not on the river map
23 spills · 221 hours in 2025
Not discharging now · last
1 other overflow within 6 km is downstream of this gauge or on another branch of the river network, so it is not listed.
These are the water companies' monitor statuses; a spill does not by itself explain a change in the gauge level. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels. Explore the sewage map →
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 Wasing flood history.
Flood areas linked to this gauge
Flood warnings and alerts are issued for whole areas. These are the 5 areas linked to this gauge, nearest first.
🌊 Mixed responseA balance of quick runoff and slower groundwater baseflow.
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
0.50
mixed response
Avg Annual Rainfall
835 mm/yr
1991–2020 · +5% since 1941–70
Urban Extent
2.0%
largely rural
Median Annual Flood
16.60 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
26.50 m³/s
24 Dec 1999 · daily mean, not the instantaneous peak
Flow-Duration Curve
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.
The station is located in the responsive Enbourne catchment.
More detail
The catchment
Catchment is mainly impervious (Tertiary clays), and responsive. Chalk outcrops and Upper Greensand in the headwaters. Land use is principally agricultural with significant woodland and scattered settlements.
The station
Station comprises asymmetrical compound Crump weir (crest widths 3.0m and 4.56m, separated by 0.3m wide divide pier). A timber baffle fish pass has been installed below the crest of the low flow crump weir (lb).
How it measures flow
Generally good high flow calibration (the station remains modular up to 18 cumecs) but the highest flows are underestimated due to bypassing over the left bank. Between 1967 and 1977, the rating was a standard Crump formula with no correction for drowned flows. In 1977, the rating was altered to allow for drowned flows (where levels were greater than 0.96m) and flows were revised. However, this underestimated flow when the river was out of bank. In 1992, a d/s tail recorder was installed and the standard Theoretical Crump weir rating using head and tail levels was used to adjust for non-modularity and to correct for drowned flows. Still no adjustment made for out of bank flow. A total flow flood forecasting rating is available.
Flow regime
Responsive regime. Runoff is influenced by gw abstraction/recharge but overall this is moderate and there is a net export of water. Abstractions occur for industrial/agricultural use. From 1989 the impact of WBGS may be evident on low flows with a specific example being between October and November, 2012.
The flow record
Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).
How this gauging station is built and how long it has measured (NRFA / UKCEH).
Gauge type
Gauging structure
Operating since
1966
Station datum
59.4 mAOD
Flow record
1967–2024 · 57 yrs · 100% complete
Peak-flow record
since 1967
Hydrometric area
39
Measured by
Environment Agency
Nearby Groundwater
Soil Moisture
Frequently asked questions
Is the River Enborne at Brimpton flooding today?
The current level is 0.10m, which is within the typical range of 0.08 to 1.34m. Flooding is unlikely at this level.
Is the river level rising or falling at Brimpton?
Based on the most recent readings, the level is currently falling slightly. The chart above shows the last 12 hours of measurements by default (up to 7 days), 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 9.6mm 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 Enborne at Brimpton?
The typical range at this station is 0.08m to 1.34m, based on Environment Agency historical data. Levels above 1.34m are higher than usually seen and may indicate a flood risk.
How often is this river level data updated?
Readings are supplied by the Environment Agency gauge. FloodRadar checks for updates roughly every 15 minutes; the timestamp above shows how recent the latest available reading is.
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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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