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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
0.220 m
▬ Steady
24h Max
0.222 m
24h Min
0.219 m
Typical Range
0.21 - 1.00
m
Highest Recorded
1.77 m
EA official record
1.77 in our data (since Apr 1974)
Current level is 12% 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.
1 storm overflow is traced upstream of this gauge, the nearest 2.2 km away along the river. 0 report discharging now, 1 reports not discharging.
South West Water · into River Meavy · 3.4 km away in a straight line · not connected to this gauge on the river map
15 spills · 49 hours in 2025
Status unknown — the live feed has not updated for 7 d 22 h
3 more within 6 km whose connection is not known.
13 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 1.00 m
on about 4 days.
This year so far: 2 days.
20262 days so far
20256 days
20244 days
20237 days patchy data
20225 days
20213 days
20204 days patchy data
20191 day
20184 days patchy data
20172 days patchy data
Counted from each day's highest reading. Days with missing or implausible readings are left out, so a year marked patchy may have run high more often than shown.
Flood history near this gauge
Official Environment Agency warnings issued since 2006 for the 7 flood
areas linked to this gauge (nearest 0.5 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 Horrabridge flood history.
Flood areas linked to this gauge
Flood warnings and alerts are issued for whole areas. These are the 7 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
0.59
mixed response
Avg Annual Rainfall
1,857 mm/yr
1991–2020 · +12% since 1941–70
Urban Extent
0.8%
largely rural
Median Annual Flood
44.59 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
38.63 m³/s
18 Dec 2020 · 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.
Three bay non-standard structure consisting of Flat V, triangular profile and broad-crested weirs.
More detail
The catchment
Moorland catchment draining western Dartmoor Granite. Steep, afforested valley flanks as the river leaves the granite and drains Devonian slates, limestone and volcanics. Land use is low grade agriculture, moorland and woodland. No major catchment changes.
The station
Three-bay non-standard compound structure with 2.47m flat V weir (on fish pass), 9.48m wide triangular profile weir and a 8.53m wide broad-crested weir. Flat V weir on fish pass superseded a previous sharp crested weir in 1976.
How it measures flow
During low flows, the left hand broad crested weir in the flood relief channel (gently sloping open grassed space) is dry - beyond 1.4m the flows bypass the structure and enter the channel. Allowance for bypass flow made based on contemporary observations of 1979 flood (including survey and Manning calculations), which suggested a flow range between 90 and 112m3/s. Multiple ratings across period of record, using check gaugings (some collected by ADCP) and extrapolated above.
Flow regime
Moderate flow modification by PWS abstraction and minor agricultural abstraction.
The flow record
No data between 07/2014 and 12/2014 due to fish pass improvement works. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).
Timing, not cause. Gauges can move together simply because the same rain fell on both.
Frequently asked questions
Is the River Walkham at Horrabridge flooding today?
The current level is 0.22m, which is within the typical range of 0.21 to 1.00m. Flooding is unlikely at this level.
Is the river level rising or falling at Horrabridge?
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 Walkham at Horrabridge?
The typical range at this station is 0.21m to 1.00m, based on Environment Agency historical data. Levels above 1.00m 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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Free live river-level widget — ideal for parish councils, angling clubs and local sites. Updates automatically.
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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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9 Aug 2016 Horrabridge looking downstream
9 Aug 2016 Horrabridge spill weir
9 Aug 2016 Horrabridge weir SG 0.230m FQ 0.600m3s
3 Jan 2012 Horrabridge high flow SG = 0.935m
Weir structure on right bank side