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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.
Get notified when recent rainfall near this gauge crosses its learnt rise trigger — an early "watch"
signal, typically hours before a rise. Experimental; not an official flood warning.
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Current Level
0.060 m
▬ Steady
24h Max
0.066 m
24h Min
0.053 m
Typical Range
0.05 - 1.80
m
Highest Recorded
2.93 m
EA official record
2.93 in our data (since Jul 1966)
Current level is 2% 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.
5 storm overflows are traced upstream of this gauge, the nearest 1.2 km away along the river. 0 report discharging now, 4 report not discharging, and for 1 the monitor is offline or has not reported, so their status is not known.
Wessex Water · into Tributary Of Wellhams Brook · 4.1 km away in a straight line · no mapped watercourse close enough to be sure
31 spills · 32 hours in 2025
Not discharging now · last
12 more within 6 km whose connection is not known.
5 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 1.80 m
on about 13 days.
This year so far: 11 days.
202611 days, 2 of them high · 2 highso far
202516 days, 8 of them high · 8 high
202416 days, 7 of them high · 7 high
202322 days, 9 of them high · 9 high
202212 days, 5 of them high · 5 high
202111 days, 4 of them high · 4 high
202015 days, 8 of them high · 8 high
20199 days, 3 of them high · 3 high
201811 days, 3 of them high · 3 high
20174 days, 2 of them high · 2 high
Counted from each day's highest reading. Days with missing or implausible readings are left out.
The darker part is days above 2.07 m, the level this gauge tops only a few days a year.
Flood history near this gauge
Official Environment Agency warnings issued since 2006 for the 5 flood
areas linked to this gauge (nearest 6.9 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 Chiselborough 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
0.54
mixed response
Avg Annual Rainfall
933 mm/yr
1991–2020 · +5% since 1941–70
Urban Extent
2.4%
largely rural
Median Annual Flood
32.67 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
52.01 m³/s
4 Dec 2023 · 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 63%Arable 23%Urban 6%
Arable 26% → 23% since 1990
Flow affected by: effluent returns.
Photos
Gauging-station photographs from the National River Flow Archive (UKCEH).
Crump weir with crest tapping, situated in bridge culvert. Rating has shifted over time due to tree and shrub growth downstream.
More detail
The catchment
Fairly responsive catchment predominantly comprising Oxford Clay with small band of Upper Greensand and Gault in headwaters. Land use is predominantly rural. No major changes to catchment.
The station
Station opened in 1966. Crump weir (breadth: 7.87m) with crest tapping, situated in bridge culvert.
How it measures flow
Full range station. Rated section at high flows. Backwater effects outside of modular range. Tree and shrub growth downstream. Silty and weedy river. Throttling of high flows by bridge, and downstream bends act as control therefore flow hydrograph exhibits hysteresis. Weir drowning more frequent prior to downstream channel improvements in 1966. Rating has shifted over time due to tree and shrub growth downstream. The POR maximum flood occurred in 05/1979 - the exceptional peak flow of 173 cumecs is a result of a new rating, which is supported by modelling work (including floodplain flows) undertaken by Mott McDonald. Multiple ratings applied across period of record, the most recent is valid from 01/1990. Significant scatter exists in gaugings, possibly to due drowning.
Flow regime
Balance between abstraction and discharge, so near natural.
The flow record
Flows calculated from crest tapping prior to 1/4/67 are erroneous due to leak in float well. Various rejected years between 1970 and 1985 due to 15-min data being unavailable and the flow calculated from two stage values per day leading to uncertainties. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).
Timing, not cause. Gauges can move together simply because the same rain fell on both.
Frequently asked questions
Is the River Parrett at Chiselborough flooding today?
The current level is 0.06m, which is within the typical range of 0.05 to 1.80m. Flooding is unlikely at this level.
Is the river level rising or falling at Chiselborough?
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 Parrett at Chiselborough?
The typical range at this station is 0.05m to 1.80m, based on Environment Agency historical data. Levels above 1.80m 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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7 Jul 2012 Chiselborough in flood. Weir located beneath the road bridge which is surcharging. Some bypassing occurring.
High flow looking upstream