Parrett, Brue and West Somerset Streams catchment
• Chiselborough • Somerset • ID: 52116 • Level
(33m ago) • 4 readings/hr • 201 views
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Current Level
0.058 m
▬ Steady
24h Max
0.071 m
24h Min
0.058 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
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.
Long Term
🌍 floodradar.co.uk
—
Consecutive rainy days0 → 10+
Days Above Normal
This year vs 5-year monthly range
Recent Readings
Steady over 5h
10 Sep 07:15▬ steady0.058 m
10 Sep 07:00▬ steady0.058 m
10 Sep 06:45▬ steady0.058 m
10 Sep 06:30▬ steady0.058 m
10 Sep 06:15▬ steady0.058 m
10 Sep 06:00▬ steady0.058 m
10 Sep 05:45▬ steady0.058 m
10 Sep 05:30▬ steady0.058 m
10 Sep 05:15▬ steady0.058 m
10 Sep 05:00▬ steady0.058 m
10 Sep 04:45▬ steady0.058 m
10 Sep 04:30▬ steady0.058 m
10 Sep 04:15▬ steady0.058 m
10 Sep 04:00▬ steady0.058 m
10 Sep 03:45▬ steady0.059 m
10 Sep 03:30▬ steady0.059 m
10 Sep 03:15▬ steady0.059 m
10 Sep 03:00▬ steady0.059 m
10 Sep 02:45▬ steady0.059 m
10 Sep 02:300.059 m
Rainfall & Weather
Loading rainfall and weather data...
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.
Flow Data: Daily mean flow (m³/s) to 8 Sep (2 days behind — the EA publishes each day's mean a day or two after it ends; unchecked, provisional)via EA Hydrology
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
0.54
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).
How this gauging station is built and how long it has measured (NRFA / UKCEH).
Gauge type
Crump weir
Operating since
1966
Station datum
20.7 mAOD
Flow record
1966–2024 · 58 yrs · 100% complete
Peak-flow record
since 1966
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 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 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:
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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