Get notified about East Mills Flume — tick as many as you like, they all share the notify settings below.
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⤴Unusual rise — FloodRadar+Top 1% rise rate for this gauge.
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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 storm overflow starts discharging, from the water companies' near-real-time feeds. Which overflows:
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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
Experimental model fusing soil moisture, river flow, groundwater and catchment
character. The shaded band is its 10–90% range, widened so that about 80% of recent outcomes fall inside it.
Under evaluation — not yet promoted, so treat as a second opinion.
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.
Flow Data: Daily mean flow (m³/s) to 26 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.
30 storm overflows are traced upstream of this gauge, the nearest 10.8 km away along the river. 0 report discharging now, 27 report not discharging, and for 3 the monitor is offline or has not reported, so their status is not known.
Wessex Water · into River Wylye · 33.5 km upstream along the river
10 spills · 190 hours in 2025
Not discharging now · last
22 more further upstream, up to 84.7 km away along the river.
2 other overflows within 6 km are downstream of this gauge or on another branch of the river network, so they are 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. Sewage & storm overflows →
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 Fordingbridge flood history.
Flood areas linked to this gauge
Flood warnings and alerts are issued for whole areas. These are the 6 areas linked to this gauge, nearest first.
🌊 Groundwater-fedSlow 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
0.89
groundwater-fed — slow & steady
Avg Annual Rainfall
890 mm/yr
1991–2020 · +6% since 1941–70
Urban Extent
1.6%
largely rural
Median Annual Flood
47.51 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
94.20 m³/s
12 Dec 2000 · 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.
Land Cover (2023)
Woodland 8%Grassland 47%Arable 40%Urban 4%
Grassland 51% → 47% since 1990
Flow affected by: public water supply.
Photos
Gauging-station photographs from the National River Flow Archive (UKCEH).
Combined site consisting of East Mills Weir and East Mills Flume.
More detail
The catchment
Predominantly permeable (Chalk) catchment. Land use is rural. No major catchment changes.
The station
Combined site consisting East Mills Weir (43811) and East Mills Flume (43810). Weir is a compound Crump profile weir with central notch fish pass. Flume consists of a critical depth rectangular flume.
How it measures flow
This station is a combined site consisting of East Mills Weir and East Mills Flume. High flows for both structures gauged from Fordingbridge bypass road bridge until 2002. Bypassing was previously an issue but re-rating has been carried out at both structures. Combined flows for the 2 structures are produced by summing individual flows under 40cumecs. Above 40cumecs combined flows are derived from a rating fitted to gaugings which takes the bypassing into account. Managed weed growth within d/s channel can cause non-modularity at flume and affects weir flows; since 01/01/2012 flows have been measured during times of non-modularity using a ADCP. Gaugings have proven it to be an accurate way of measuring flow at this site. Small irrigation carrier 3km upstream at Burgate bypasses gauge (normally <3% total flow).
Flow regime
A small irrigation carrier fed from the River Avon at Burgate about 2 miles upstream bypasses the gauging station and is later returned to the main channel, (normally >3% total flow). The abstraction controlled by one hatch.
The flow record
Water year 1966/1967 rejected due to high uncertainty of flow value. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).
How this gauging station is built and how long it has measured (NRFA / UKCEH).
Gauge type
Gauging structure
Operating since
1965
Station datum
27.3 mAOD
Flow record
1965–2024 · 59 yrs · 100% complete
Peak-flow record
since 1965
Hydrometric area
43
Measured by
Environment Agency
Nearby Groundwater
Soil Moisture
Possible storm-overflow correlation
Frequently asked questions
Is the River Avon at East Mills Flume flooding today?
The current level is 0.78m, which is within the typical range of 0.60 to 1.35m. Flooding is unlikely at this level.
Is the river level rising or falling at East Mills Flume?
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.
What is a normal level for the River Avon at East Mills Flume?
The typical range at this station is 0.60m to 1.35m, based on Environment Agency historical data. Levels above 1.35m 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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