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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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Not an emergency service — if in danger call 999. Alerts rely on
EA/SEPA/NRW data and are best-efforts. Terms
Current Level
0.700 m
▬ Steady
24h Max
0.704 m
24h Min
0.695 m
Typical Range
0.65 - 1.22
m
Highest Recorded
1.83 m
EA official record
1.83 in our data (since Nov 2004)
Current level is 38% 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 6.4 km away along the river. 0 report discharging now, 4 report not discharging.
Wessex Water · into River Bourne(S) · 4.7 km away in a straight line · several watercourses close by, nothing to choose between them
1 spill · 1 hours in 2025
Not discharging now · last
5 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 1.22 m
on about 29 days.
This year so far: 49 days.
202649 days, 18 of them high · 18 highso far
202554 days, 1 of them high · 1 high
2024107 days, 28 of them high · 28 high
202340 days
20220 days
20210 days
202057 days
20192 days
20180 days
20170 days
Counted from each day's highest reading. Days with missing or implausible readings are left out.
The darker part is days above 1.50 m, the level this gauge tops only a few days a year.
Flood history near this gauge
Official Environment Agency warnings issued since 2012 for the 18 flood
areas linked to this gauge (nearest 0.1 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 Salisbury flood history.
Flood areas linked to this gauge
Flood warnings and alerts are issued for whole areas. These are the 18 areas linked to this gauge, nearest first.
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).
Highest Daily Mean Flow
8.73 m³/s
14 Feb 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.
About this gauge
Site consists of three channels, main river channel and two bypassing culverts.
More detail
The catchment
Predominantly permeable (Chalk) catchment. Land use rural with some small settlements. River Bourne is ephemeral in its upper reaches. Garrison town of Tidworth has developed in catchment.
The station
Time of flight ultrasonic gauging station with three channels, comprised of the main river and two bypassing culverts. Main channel is monitored using a time of flight cross path arrangement, within a rectangular concrete section. Culverts are monitored using a time of flight inline arrangement and a shared level at the culvert exits. The main channel has periodically been desilted. Culverts have historically been blocked to varying degrees and since 23/12/14 permanently closed.
How it measures flow
Main channel is monitored using a cross path ultrasonic and the culverts by an inline ultrasonic. Since 23/12/14 the culvert entrance has been blocked.
The flow record
Missing daily flow data on 11/12/2019 due to outstation failure.
How this gauging station is built and how long it has measured (NRFA / UKCEH).
Gauge type
Ultrasonic
Operating since
2007
Flow record
2004–2024 · 20 yrs · 94% complete
Hydrometric area
43
Measured by
Environment Agency
Nearby Groundwater
Soil Moisture
Possible storm-overflow correlation
Frequently asked questions
Is the River Bourne at Salisbury Bourne flooding today?
The current level is 0.70m, which is within the typical range of 0.65 to 1.22m. Flooding is unlikely at this level.
Is the river level rising or falling at Salisbury Bourne?
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 Bourne at Salisbury Bourne?
The typical range at this station is 0.65m to 1.22m, based on Environment Agency historical data. Levels above 1.22m 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:
FloodRadar
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