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⤴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
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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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EA/SEPA/NRW data and are best-efforts. Terms
Current Level
0.091 mASD
▬ Steady
24h Max
0.102 mASD
24h Min
0.090 mASD
Typical Range
0.11 - 0.70
mASD
Highest Recorded
1.48 mASD
EA official record
1.33 in our data (since Nov 2012)
Current level is 6% 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 4 Aug (65 days behind — the EA publishes each day's mean a day or two after it ends; unchecked, provisional)via EA Hydrology
None of the storm overflows FloodRadar holds is traced upstream of this gauge on the mapped river network. That is not the same as none: the map leaves out many small streams and culverts, so an overflow it cannot place may still drain here, and not every company publishes every overflow. Those nearby are listed below.
Nearby, connection not known
Within 6 km in a straight line, but the river map cannot say whether their water passes this gauge.
Wessex Water · into Tributary Of Halse Water · 4.9 km away in a straight line · its watercourse is not on the river map
27 spills · 366 hours in 2025
Not discharging now · last
4 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 0.70 m
on about 4 days.
This year so far: 1 day.
20261 day, 1 of them high · 1 highso far
202510 days, 7 of them high · 7 high
20246 days, 5 of them high · 5 high
20235 days, 5 of them high · 5 high
20220 days
20215 days, 3 of them high · 3 high
20208 days, 7 of them high · 7 high
20193 days, 1 of them high · 1 high
20182 days
20171 day
Counted from each day's highest reading. Days with missing or implausible readings are left out.
The darker part is days above 0.83 m, the level this gauge tops only a few days a year.
Flood history near this gauge
Official Environment Agency warnings issued since 2013 for the 4 flood
areas linked to this gauge (nearest 4.1 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 Milverton flood history.
Flood areas linked to this gauge
Flood warnings and alerts are issued for whole areas. These are the 4 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
0.63
mixed response
Avg Annual Rainfall
980 mm/yr
1991–2020 · +1% since 1941–70
Urban Extent
4.4%
partly urbanised
Median Annual Flood
29.33 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
32.90 m³/s
30 Oct 2000 · 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 7%Grassland 54%Arable 28%Urban 10%
Grassland 65% → 54% since 1990
Flow affected by: public water supply, groundwater abstraction, effluent returns.
Photos
Gauging-station photographs from the National River Flow Archive (UKCEH).
Trapezoidal critical depth flume upstream of confluence with the River Avon. Ultrasonic gauge installed 2007.
More detail
The catchment
The Midford catchment is made up of two parallel river systems; the Cam Brook and Wellow Brook. Both run almost the length of the catchment before joining at Midford. The area is mainly rural although there are urban areas at Midsomer Norton and Radstock with smaller centres at Paulton and Peasedown St. John. Predominantly impermeable catchment - Lias with Coal Measures. Deep steep sided valleys; responds rapidly to rainfall. No major catchment changes.
The station
The station is located approximately 1km south of Bath and was opened in 1961. Trapezoidal critical depth flume 2.4km upstream of confluence with the River Avon. Ultrasonic gauge installed 11/2007.
How it measures flow
Full range station. The channel bed in the vicinity of the station consists of large stones and alluvium and is lined in parts with trees and vegetation. Algal growth affects sensitivity at low flows. Bypassing may occur on left-hand bank above 3m stage. No backwater action. Single rating is based on the theoretical rating for the structure, and confirmed by a few gaugings up to 2.5m. Banks works been done u/s and d/s.
Flow regime
Runoff influenced by groundwater abstraction/recharge. Surface water abstraction takes place for public water supply. Flows increased by effluent returns.
The flow record
Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).
Timing, not cause. Gauges can move together simply because the same rain fell on both.
Frequently asked questions
Is the Hillfarrance Brook at Milverton flooding today?
The current level is 0.09m, which is below the typical range. Flooding is very unlikely at this level.
Is the river level rising or falling at Milverton?
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 Hillfarrance Brook at Milverton?
The typical range at this station is 0.11m to 0.70m, based on Environment Agency historical data. Levels above 0.70m 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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12 Jul 2019 View downstream to flume section
12 Jul 2019 Ultrasonic section
12 Jul 2019 View upstream from gauging station
12 Jul 2019 View downstream to flume section
Looking downstream to flume throat and exit channel