Bristol Avon Little Avon Axe and North Somerset St catchment
• Lea • Wiltshire • ID: 53154 • Level
(32m ago) • 4 readings/hr • 135 views
Set water level alerts
Get notified about Crabb Mill — tick as many as you like, they all share the notify settings below.
Alert me when (tick one or more)
⤴Unusual rise — FloodRadar+Top 1% rise rate for this gauge.
Height for "Above a height"
Drag the line on the chart, or type a value:mASD
Quick pick:
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.
Notify by (tick one or more)
Your browser will ask permission, then you'll get a notification even when FloodRadar isn't open.
On iPhone: tap Share → Add to Home Screen first, then open it from there and set the alert. Show me how
Each one is saved as its own alert — pause or remove them individually any time.
Not an emergency service — if in danger call 999. Alerts rely on
EA/SEPA/NRW data and are best-efforts. Terms
Current Level
0.050 mASD
▬ Steady
24h Max
0.055 mASD
24h Min
0.048 mASD
Typical Range
0.05 - 0.68
mASD
Highest Recorded
2.73 mASD
EA official record
2.43 in our data (since Jan 1992)
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 8 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.
4 storm overflows are traced upstream of this gauge, the nearest 2.1 km away along the river. 0 report discharging now, 4 report not discharging.
Wessex Water · into Unnamed Ditch Trib Of Braydon · 4.8 km away in a straight line · its watercourse is not on the river map
34 spills · 549 hours in 2025
Not discharging now · last
11 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 0.68 m
on about 43 days.
This year so far: 40 days.
202640 days, 1 of them high · 1 highso far
202538 days, 9 of them high · 9 high
202459 days, 16 of them high · 16 high
202379 days, 16 of them high · 16 high
202230 days, 1 of them high · 1 high
202126 days, 3 of them high · 3 high
202060 days, 8 of them high · 8 high
201949 days, 2 of them high · 2 high
201832 days, 3 of them high · 3 high
201717 days, 1 of them high · 1 high
Counted from each day's highest reading. Days with missing or implausible readings are left out.
The darker part is days above 1.47 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 6 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 Lea 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.
🌊 FlashyRain runs off fast — levels rise and fall sharply, often within hours of heavy rain.
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
0.33
flashy — rain runs off fast
Avg Annual Rainfall
799 mm/yr
1991–2020 · +6% since 1941–70
Urban Extent
0.3%
largely rural
Highest Daily Mean Flow
81.64 m³/s
20 Jul 2007 · 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 10%Grassland 68%Arable 19%Urban 3%
Grassland 72% → 68% since 1990
Flow affected by: groundwater abstraction.
About this gauge
Station on Woodbridge Brook just upstream of the confluence with the River Avon.
More detail
The catchment
Impermeable clay catchment. Land use is predominantly rural.
How it measures flow
Compound rectangular thin-plate weir, having 1.52m centre section and two 0.76m wings. Measuring capacity of 1.4 m3s-1. Not suitable for high flows. Rating effected by weeds and backing up, rating review underway and ultrasonic being installed (2019).
Flow regime
Substantial groundwater abstractions in catchment.
Timing, not cause. Gauges can move together simply because the same rain fell on both.
Frequently asked questions
Is the Woodbridge Brook at Crabb Mill flooding today?
The current level is 0.05m, which is below the typical range. Flooding is very unlikely at this level.
Is the river level rising or falling at Crabb Mill?
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 Woodbridge Brook at Crabb Mill?
The typical range at this station is 0.05m to 0.68m, based on Environment Agency historical data. Levels above 0.68m 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.
Embed this gauge on your website
Free live river-level widget — ideal for parish councils, angling clubs and local sites. Updates automatically.
Preview
📮 Flood risk by postcode near this gauge
Postcodes within 5 km with properties in the Environment Agency’s rivers-and-sea flood-risk bands:
FloodRadar
Log inCreate free account