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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.
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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
0.285 m
▬ Steady
24h Max
0.299 m
24h Min
0.285 m
Typical Range
0.13 - 1.10
m
Highest Recorded
1.80 m
EA official record
1.79 in our data (since Jan 1998)
Current level is 16% 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
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.
South West Water · into Nanceroy Stream (S) · 5.8 km away in a straight line · no mapped watercourse close enough to be sure
41 spills · 489 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 →
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 Wendron 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.
🌊 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
0.67
groundwater-fed — slow & steady
Avg Annual Rainfall
1,309 mm/yr
1991–2020 · +4% since 1941–70
Urban Extent
0.4%
largely rural
Median Annual Flood
4.41 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
7.02 m³/s
1 Jan 2003 · 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.
Velocity-area station installed for flood warning purposes in 1998.
More detail
The catchment
Igneous catchment, granite with some areas of alluvium. Land use is mostly rural/agricultural/ mining with little urbanisation. No major changes to catchment.
The station
Velocity-area station, about a 4m wide section. Station opened in 1998 as a flood warning level site, one of 3 flow sites on the River Cober. Station added to peak flows dataset in August 2025 (WINFAP Files v14).
How it measures flow
Fairly stable shoal forms a natural bed control at lower flows. Has been subject to change but stable since 2011. The site is not bypassed but is impacted by a public water supply abstraction upstream of the site on the River Cober at Trenear gauging station. Between Trenars gauging station and this site, there is a significant input of about 35% of the catchment flow from the Releath Stream. Rated by gaugings to within 75% of bankfull (1.1m) and extrapolated to bank full.
Flow regime
Moderate influence from public water supply abstraction and compensation flows at Trenear gauging station and industrial abstractions. Flows influenced by hstorical mineworkings in the catchment.
The flow record
High flow event in 2012 did not change the relationship at high flows.
How this gauging station is built and how long it has measured (NRFA / UKCEH).
Gauge type
Velocity–area
Operating since
1998
Flow record
1998–2024 · 26 yrs · 99% complete
Peak-flow record
since 1998
Hydrometric area
48
Measured by
Environment Agency
Nearby Groundwater
Soil Moisture
Possible storm-overflow correlation
Frequently asked questions
Is the River Cober at Boscadjack flooding today?
The current level is 0.29m, which is within the typical range of 0.13 to 1.10m. Flooding is unlikely at this level.
Is the river level rising or falling at Boscadjack?
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 Cober at Boscadjack?
The typical range at this station is 0.13m to 1.10m, based on Environment Agency historical data. Levels above 1.10m 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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