Parrett, Brue and West Somerset Streams catchment
• Yeovil • Somerset • ID: 52117 • Level
(40m ago) • 4 readings/hr • 122 views
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Current Level
0.115 m
▬ Steady
24h Max
0.116 m
24h Min
0.113 m
Typical Range
0.12 - 3.10
m
Highest Recorded
4.57 m
EA official record
4.49 in our data (since Nov 1963)
Current level is 3% of this
🚽Sewage overflows nearby
Recent Water Levels
🌍 floodradar.co.uk
1 day
Prediction V2
Prediction Eris
Nimbus beta
Experimental model fusing soil moisture, river flow, groundwater and catchment
character. Shown with its calibrated 10–90% confidence band. 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.
Long Term
🌍 floodradar.co.uk
—
Consecutive rainy days0 → 10+
Days Above Normal
This year vs 5-year monthly range
Recent Readings
Rising · +0.2 cm over 6h
24 Aug 00:30▬ steady0.115 m
24 Aug 00:15▬ steady0.115 m
24 Aug 00:00▬ steady0.115 m
23 Aug 23:45▬ steady0.115 m
23 Aug 23:30▬ steady0.115 m
23 Aug 23:15▬ steady0.115 m
23 Aug 23:00▬ steady0.115 m
23 Aug 22:45▬ steady0.115 m
23 Aug 21:30▬ steady0.115 m
23 Aug 21:15▬ steady0.115 m
23 Aug 21:00▬ steady0.115 m
23 Aug 20:45▲ +0.1 cm0.115 m
23 Aug 20:30▬ steady0.114 m
23 Aug 20:15▬ steady0.114 m
23 Aug 20:00▬ steady0.114 m
23 Aug 19:45▬ steady0.114 m
23 Aug 19:30▬ steady0.114 m
23 Aug 19:15▬ steady0.114 m
23 Aug 19:00▲ +0.1 cm0.114 m
23 Aug 18:450.113 m
Rainfall & Weather
Loading rainfall and weather data...
Flood history near this gauge
Official Environment Agency warnings issued since 2006 for the 11 flood
areas linked to this gauge (nearest 2.1 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 Yeovil flood history.
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
🌊 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
0.57
mixed response
Avg Annual Rainfall
933 mm/yr
1991–2020 · +3% since 1941–70
Urban Extent
2.9%
largely rural
Median Annual Flood
49.22 m³/s
QMED — typical yearly peak flow
Highest Recorded Flow
113 m³/s
5 Nov 1966
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 65%Arable 19%Urban 8%
Arable 28% → 19% since 1990
Flow affected by: surface-water abstraction, public water supply, groundwater abstraction.
Photos
Gauging-station photographs from the National River Flow Archive (UKCEH).
Crump profile weir for low flows, set within trapezoidal concrete flanks and topped with the natural banks, becomes velocity-area station at high flows. Sutton Bingham Reservoir in headwaters.
More detail
The catchment
Fairly responsive catchment with Oxford Clay and Great Oolite in the upper catchment, Yeovil Sands and Inferior Oolite in the lower catchment. Land use is predominantly rural. No major catchment changes.
The station
Station was installed in November 1963 and is located next to a sewage treatment works. Crump profile weir for low flows, set within trapezoidal concrete flanks and topped with the natural banks, becomes velocity-area station at high flows. Station moved slightly in 1989, due to stilling-well problems; bank repairs undertaken in 1997/98.
How it measures flow
Two peak levels recorded before weir finished but flows can be calculated from rating as station becomes velocity area at high flows. Velocity area station (affected by downstream weed growth) used to measure flows >1.55 m3/s. Flows >2m are less reliable. All but highest floods contained. Some out of bank events on right bank but modelled so these flows are included. Highest flows can be gauged at upstream bridge. Cableway cannot be used above 3.8 m, in which case road bridge is used, up to 4.25 m. Floodplain water does not flow appreciably, though may extend 200 m from river. Rating reviewed in Jan 2001. One rating applied across period of record. Bank repairs 1997/98 might have affected the rating and may influence cableway gaugings. Issues with silt build up.
Flow regime
Sutton Bingham Reservoir in headwaters. Abstraction for public water supply. Medium & low flows influenced by variable abstractions & compensation.
The flow record
Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and August 2025 (WINFAP Files v14). Peak flows from 30/12/1977 to 04/01/1979 are rejected as only 2 stages per day are available back calculated from the daily mean flow.
How this gauging station is built and how long it has measured (NRFA / UKCEH).
Gauge type
Crump weir
Operating since
1963
Station datum
23.9 mAOD
Flow record
1963–2024 · 61 yrs · 100% complete
Peak-flow record
since 1962
Hydrometric area
52
Measured by
Environment Agency
Nearby Groundwater
Soil Moisture
Possible storm-overflow correlation
🚽 Storm overflows on this river
Frequently asked questions
Is the River Yeo at Pen Mill flooding today?
The current level is 0.12m, which is below the typical range. Flooding is very unlikely at this level.
Is the river level rising or falling at Pen Mill?
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 River Yeo at Pen Mill?
The typical range at this station is 0.12m to 3.10m, based on Environment Agency historical data. Levels above 3.10m 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:
