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 Trib Of Sherford River · 5.8 km away in a straight line · its watercourse is not on the river map
0 spills · 0 hours in 2025
Not discharging now
3 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 →
🌊 Groundwater-fedSlow and steady — fed largely by groundwater, so levels change gradually, not in sudden spikes.
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
0.93
groundwater-fed — slow & steady
Avg Annual Rainfall
968 mm/yr
1991–2020 · +8% since 1941–70
Urban Extent
1.4%
largely rural
Highest Daily Mean Flow
19.95 m³/s
7 Jan 2014 · 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 52%Arable 34%Urban 3%
Grassland 56% → 52% since 1990
Photos
Gauging-station photographs from the National River Flow Archive (UKCEH).
Electromagnetic gauge on the River Wylye, a tributary to the River Avon (Hampshire).
More detail
The catchment
Predominantly natural catchment with Upper Greensand and Gault Clay in headwaters, otherwise Chalk. Land use is rural.
The station
Tributary to the River Avon (Hampshire). Station closed for flows on 11/11/2023 as the electromagnetic gauge is no longer functional and monitoring is level-only for the forseeable future.
How it measures flow
Electromagnetic gauge within trapezoidal concrete section. Periodically re-rated.
The flow record
Early record has been reviewed. Small step changes in flow are a result of the recalibration of electromagnetic gauge equation.
How this gauging station is built and how long it has measured (NRFA / UKCEH).
Gauge type
Electromagnetic
Operating since
1994–2023
Station datum
79.7 mAOD
Flow record
1994–2023 · 29 yrs · 100% complete
Hydrometric area
43
Measured by
Environment Agency
Nearby Groundwater
Soil Moisture
Frequently asked questions
Is STURMINSTER MARSHALL MAGGS BRIDGE flooding today?
The latest recorded level is 0.00m. Compare it with the recent history on the chart above to judge whether levels are unusually high.
Is the river level rising or falling at STURMINSTER MARSHALL MAGGS BRIDGE?
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.
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:
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