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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 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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EA/SEPA/NRW data and are best-efforts. Terms
Current Level
0.342 m
▬ Steady
24h Max
0.356 m
24h Min
0.309 m
Typical Range
0.35 - 1.20
m
Highest Recorded
1.91 m
EA official record
A 2.82 reading (4 Dec 2025) sits in our unverified raw history and is not treated as the record
Current level is 18% of this
🚽Sewage overflows nearby
Recent Water Levels
🌍 floodradar.co.uk
1 day
EA forecast (official)
Prediction V2
Prediction Eris
Nimbus beta
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 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.
49 storm overflows are traced upstream of this gauge, the nearest 1.6 km away along the river. 0 report discharging now, 48 report not discharging, and for 1 the monitor is offline or has not reported, so their status is not known.
Wessex Water · into Tidal River Stour(E) · 5.1 km away in a straight line · discharges to the sea, an estuary or tidal water
15 spills · 7 hours in 2025
Not discharging now · last
3 more within 6 km whose connection is not known.
6 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. Explore the sewage map →
In a typical year this gauge reaches its typical high of 1.20 m
on about 11 days.
This year so far: 33 days.
202633 days, 7 of them high · 7 highso far
202514 days, 7 of them high · 7 high
202432 days, 11 of them high · 11 high
202329 days, 7 of them high · 7 high
20224 days, 2 of them high · 2 high
20215 days
20208 days, 2 of them high · 2 high
20199 days, 2 of them high · 2 high
20182 days
20170 days
Counted from each day's highest reading. Days with missing or implausible readings are left out.
The darker part is days above 1.45 m, the level this gauge tops only a few days a year.
Flood history near this gauge
Official Environment Agency warnings issued since 2007 for the 19 flood
areas linked to this gauge (nearest 2.0 km away).
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 Throop flood history.
Flood areas linked to this gauge
Flood warnings and alerts are issued for whole areas. These are the 19 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
0.66
groundwater-fed — slow & steady
Avg Annual Rainfall
933 mm/yr
1991–2020 · +4% since 1941–70
Urban Extent
2.0%
largely rural
Median Annual Flood
101 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
168 m³/s
9 Jul 2012 · 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 9%Grassland 52%Arable 32%Urban 6%
Grassland 58% → 52% since 1990
Flow affected by: public water supply, groundwater abstraction, effluent returns.
Photos
Gauging-station photographs from the National River Flow Archive (UKCEH).
Mixed geology - predominantly Chalk (~50%); some clay (~30%), limestone including Great Oolite series, Corallian and Cornbrash (approx. 10%) and Upper Greensand (approx. 10%). Land use: rural and agricultural. No major changes.
The station
Compound Crump profile weir, centre crest 5m wide and 2 higher flanking crests 18m wide.
How it measures flow
Site unapproachable in flood conditions, gaugings can be problematic due to the wide approach channel and weed growth. High flow gaugings carried out at New Road Bridge (5km upstream) or Ensbury (4km upstream). Some combined gauging of the Stour and Moors River has taken place at Blackwater Bridge (SZ 134 959). Rating incorporates flow through one bypass channel just upstream of station: mill channel. Two peak flow ratings applied across period of record. Pre-1987 the rating was derived from weir dimensions to produce a theoretical rating in the modular range (including two small offtakes immediately upstream) with an extension for non-modular range fitted to spot flow gaugings. Post-1987 the rating was derived from weir dimensions for the main structure and mill channel only (not the Lodden Stour offtake) in the modular range and fitted to gaugings above. The post-1987 rating only takes the mill channel into account and assumes the Stour Lodden is blocked up. Both were accounted for in the pre-1987 rating.
Flow regime
Substantial ground and surface water abstractions including for public water supply. Runoff increased by effluent returns from upstream waterworks.
The flow record
Peak flows rejected as unrepresentative of the catchment from 2022-2023 because large tree caught on weir for entire water year. Full period of record peak flow data reviewed and released in August 2025 (WINFAP Files v14).
How this gauging station is built and how long it has measured (NRFA / UKCEH).
Gauge type
Gauging structure
Operating since
1973
Station datum
4.4 mAOD
Flow record
1973–2024 · 51 yrs · 100% complete
Peak-flow record
since 1972
Hydrometric area
43
Measured by
Environment Agency
Nearby Groundwater
Soil Moisture
Possible storm-overflow correlation
Frequently asked questions
Is the River Stour at Throop flooding today?
The current level is 0.34m, which is below the typical range. Flooding is very unlikely at this level.
Is the river level rising or falling at Throop?
Based on the most recent readings, the level is currently steady. 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 Stour at Throop?
The typical range at this station is 0.35m to 1.20m, based on Environment Agency historical data. Levels above 1.20m 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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