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0.08

Truro

Kenwyn
Fal and St Austell Streams catchment • Truro • Cornwall • ID: 48128 • Level
(43m ago) • 3 readings/hr • 198 views

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Current Level
0.076 m
▬ Steady
24h Max
0.082 m
24h Min
0.076 m
Typical Range
0.09 - 1.30
m
Highest Recorded
2.12 m
EA official record
2.12 in our data (since Nov 1968)
Current level is 4% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Falling · -0.2 cm over 6h
08 Oct 19:00 ▬ steady 0.076 m
08 Oct 18:30 ▬ steady 0.076 m
08 Oct 18:15 ▬ steady 0.076 m
08 Oct 17:45 ▬ steady 0.076 m
08 Oct 17:30 ▬ steady 0.076 m
08 Oct 17:15 ▬ steady 0.076 m
08 Oct 17:00 ▬ steady 0.076 m
08 Oct 16:45 ▬ steady 0.076 m
08 Oct 16:30 ▬ steady 0.076 m
08 Oct 16:00 ▬ steady 0.076 m
08 Oct 15:45 ▼ -0.1 cm 0.076 m
08 Oct 15:30 ▲ +0.1 cm 0.077 m
08 Oct 15:00 ▬ steady 0.076 m
08 Oct 14:30 ▬ steady 0.076 m
08 Oct 14:00 ▼ -0.1 cm 0.076 m
08 Oct 13:45 ▬ steady 0.077 m
08 Oct 13:30 ▬ steady 0.077 m
08 Oct 13:15 ▼ -0.1 cm 0.077 m
08 Oct 13:00 ▬ steady 0.078 m
08 Oct 12:45 0.078 m

Station Details

  • Monitoring Station: Truro
  • Watercourse: River Kenwyn
  • Nearest Town: Truro
  • County: Cornwall
  • Nearest reservoir: Blackpool Pit (19.1 km) · 79.5% full (as of 31 May 2026)
  • Coordinates: 50°15'54"N 5°3'38"W (50.264906, -5.060481)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 31 Oct 1968
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: 48128
  • RLOI id: 3163 (the EA's check-for-flooding station id)
  • EA Gauge ID: 48128-level-stage-i-15_min-m
  • Parameter: Level
  • Unit: m
  • Typical rise rate: 4 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: Fal and St Austell Streams
  • Typical Range: 0.086 – 1.300 m
  • Drainage Area: 19 km² upstream of this gauge
  • 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
  • EA Cross-check: 0.08 m (EA at 8 Oct 18:30)
  • Flow Archive: National River Flow Archive ↗

Geographic coordinates may reflect the access point for the gauge, and not the precise location in the watercourse that it is taking readings from.

Nearby Stations

Gauges connected to this river, and others nearby. A distance “by river” follows the river on the map; any other is in a straight line.

Connected downstream

Same river system, separate branch

Nearby

Distances by river: OS Open Rivers. Contains OS data © Crown copyright and database rights 2026.

💧 Storm overflows upstream of this gauge

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 450 m away along the river. 0 report discharging now, 1 reports not discharging.

💧
Bosvigo Lane CSO🦪 Shellfish
South West Water · into Freshwater(S) · 450 m upstream along the river
8 spills · 96 hours in 2025
Not discharging now · last
Placed on the river by its position alone.

Nearby, connection not known

Within 6 km in a straight line, but the river map cannot say whether their water passes this gauge.

💧
Hendra Road CSO🦪 Shellfish
South West Water · into River Kenwyn(S) · 40 m away in a straight line · too close to the gauge to say which side
12 spills · 2 hours in 2025
Not discharging now · last
💧
South West Water · into River Allen · 810 m away in a straight line · discharges into a tidal reach, where the water moves both ways
18 spills · 18 hours in 2025
Not discharging now · last
💧
Fairmantle Street CSO🦪 Shellfish
South West Water · into River Kenwyn(E) · 960 m away in a straight line · discharges to the sea, an estuary or tidal water
2 spills · 1 hours in 2025
Not discharging now · last
💧
Trelander Highway CSO🦪 Shellfish
South West Water · into River Allen(Estuarine) Via Sws · 960 m away in a straight line · discharges to the sea, an estuary or tidal water
46 spills · 32 hours in 2025
Not discharging now · last
💧
St Clement's Hill CSO🦪 Shellfish
South West Water · into River Allen Via Sws(Estuarine) · 970 m away in a straight line · discharges to the sea, an estuary or tidal water
4 spills · 2 hours in 2025
Not discharging now · last
💧
South West Water · into Trib Of Truro River(Estuarine) · 1.2 km away in a straight line · discharges to the sea, an estuary or tidal water
2 spills · 1 hours in 2025
Not discharging now · last
💧
South West Water · into Truro River (Estuarine) · 1.3 km away in a straight line · discharges to the sea, an estuary or tidal water
5 spills · 9 hours in 2025
Not discharging now · last
💧
South West Water · into Truro River · 2.2 km away in a straight line · discharges into a tidal reach, where the water moves both ways
51 spills · 669 hours in 2025
Not discharging now · last

5 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 →

Contains OS data © Crown copyright and database rights 2026.

Rainfall & Weather

Loading rainfall and weather data...

How often this river runs high

This gauge rarely reaches its typical high of 1.30 m: 0 days since 2017. This year so far: 0 days.

2026 0 days so far
2025 0 days
2024 0 days
2023 0 days
2022 0 days
2021 0 days
2020 0 days
2019 0 days
2018 0 days
2017 0 days

Counted from each day's highest reading. Days with missing or implausible readings are left out.

Flood history near this gauge

Official Environment Agency warnings issued since 2012 for the 10 flood areas linked to this gauge (nearest 1.0 km away).

25flood warnings 22flood alerts

Most recent flood warning: 2 Feb 2026 — Tidal Fal Estuary

Year by year
YearWarningsAlerts
2026 2 8
2025 3 6
2024 2 8
2023 1 0
2020 2 0
2018 2 0
2016 1 0
2014 7 0
2013 1 0
2012 4 0

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 Truro flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 10 areas linked to this gauge, nearest first.

Show 2 more

Catchment Character

🌊 Mixed response A 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
0.60
mixed response
Avg Annual Rainfall
1,144 mm/yr
1991–2020 · +3% since 1941–70
Urban Extent
3.2%
partly urbanised
Median Annual Flood
5.41 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
6.52 m³/s
27 Jan 1988 · daily mean, not the instantaneous peak
Flow-Duration Curve
mean 0.3871.290.2160.0515% (high)% of days exceeded95% (low)
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 48%Arable 33%Urban 12%
Grassland 60% → 48% since 1990

Photos

Gauging-station photographs from the National River Flow Archive (UKCEH).

Photos © NRFA / UKCEH & the measuring authority — shown at web resolution. Full gallery on the NRFA ↗

About this gauge

Three-bay compound Crump profile weir with flood retention ponds upstream that alter high flow response.

More detail

The catchment

Catchment of moderate relief on Old Red Sandstone and Devonian grits and shales, with wooded, incised valleys. Substantially natural catchment but flood retention ponds (from 01/1991) alter high flow response. High baseflow for the relief of the catchment.

The station

Three-bay compound Crump profile weir with central crest length 1.22m and two side crests of 1.524m and 1.535m (4.27m total). Crest levels are: left 7.09mAOD, central 7.4mAOD, right 7.09mAOD. Pier and wing wall height 1.98m.

How it measures flow

Contains all flows. Weir can become non-modular at highest flows. Data from the Acoustic Time of Flight installed 100m upstream of the weir in 2009 have been integrated into the rating to improve the high flow accuracy. Previous rating overestimated high flows. New rating has reduced flows by up to 10% for peak flows on record. Low flow accuracy affected by variable shoaling directly upstream of weir. A timber weir d/s of the Crump, with a rectangular notch low flow section was installed in 06/2001 to allow water to be abstracted to feed the town leat. This is vulnerable to debris build up and can affect sensitivity of flow through central weir crest. Crump weir does not fully drown, but u/s flood storage ponds prevent large discharge over weir. One peak flow rating applied across period of record with the exception of the Jan 1988 high flow event where there are two temporary ratings applied. No bypassing expected.

The flow record

Suspect data 28/07/2001 - 23/08/2001, resulting from backing up from an informal weir which was installed immediately downstream of the Crump in 06/2001. Flood retention ponds upstream, in operation from 01/1991. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).

Descriptions from the National River Flow Archive (UKCEH). NRFA station record ↗

Gauge Details

How this gauging station is built and how long it has measured (NRFA / UKCEH).

Gauge type
Ultrasonic
Operating since
1968
Station datum
7.2 mAOD
Flow record
1968–2024 · 56 yrs · 100% complete
Peak-flow record
since 1968
Hydrometric area
48
Measured by
Environment Agency

Frequently asked questions

Is the River Kenwyn at Truro flooding today?

The current level is 0.08m, which is below the typical range. Flooding is very unlikely at this level.

Is the river level rising or falling at Truro?

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 Kenwyn at Truro?

The typical range at this station is 0.09m to 1.30m, based on Environment Agency historical data. Levels above 1.30m 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:

Check any UK postcode’s flood risk →

🏠 Buying or renting around here? Get the Property Flood-Risk Report for any English postcode — official risk band, recorded floods, warning history, river behaviour and nearby storm overflows. £19 one-off. Learn more →