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0.13

Bastreet

Withy Brook
Tamar catchment • Trebartha • Cornwall • ID: 47130 • Level
(30m ago) • 4 readings/hr • 131 views

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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
0.128 mASD
▬ Steady
24h Max
0.148 mASD
24h Min
0.083 mASD
Typical Range
0.13 - 1.50
mASD
Highest Recorded
1.91 mASD
EA official record
1.89 in our data (since Dec 1972)
Current level is 7% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Falling · -1 cm over 5h
09 Oct 21:30 ▼ -0.2 cm 0.128 mASD
09 Oct 21:15 ▼ -0.4 cm 0.130 mASD
09 Oct 21:00 ▲ +0.2 cm 0.134 mASD
09 Oct 20:45 ▼ -0.8 cm 0.132 mASD
09 Oct 20:30 ▲ +0.4 cm 0.140 mASD
09 Oct 20:15 ▼ -0.9 cm 0.136 mASD
09 Oct 20:00 ▲ +0.6 cm 0.145 mASD
09 Oct 19:45 ▼ -0.9 cm 0.139 mASD
09 Oct 19:30 ▲ +0.8 cm 0.148 mASD
09 Oct 19:15 ▼ -0.8 cm 0.140 mASD
09 Oct 19:00 ▲ +0.8 cm 0.148 mASD
09 Oct 18:45 ▬ steady 0.140 mASD
09 Oct 18:15 ▼ -0.8 cm 0.140 mASD
09 Oct 18:00 ▲ +0.7 cm 0.148 mASD
09 Oct 17:45 ▼ -0.4 cm 0.141 mASD
09 Oct 17:30 ▲ +0.5 cm 0.145 mASD
09 Oct 17:15 ▬ steady 0.140 mASD
09 Oct 17:00 ▲ +0.3 cm 0.141 mASD
09 Oct 16:30 ▼ -0.1 cm 0.138 mASD
09 Oct 16:15 0.139 mASD

Station Details

  • Monitoring Station: Bastreet
  • Watercourse: Withy Brook
  • Nearest Town: Trebartha
  • County: Cornwall
  • Nearest reservoir: Siblyback (6.2 km) · 24.0% full (as of 4 Oct 2026)
  • Coordinates: 50°33'39"N 4°28'49"W (50.560822, -4.480182)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 9 Dec 1972
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: 47130
  • RLOI id: 3190 (the EA's check-for-flooding station id)
  • EA Gauge ID: 47130-level-stage-i-15_min-mASD
  • Parameter: Level
  • Unit: mASD
  • Typical rise rate: 5 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: Tamar
  • Typical Range: 0.125 – 1.500 mASD
  • Drainage Area: 16 km² upstream of this gauge
  • Flow Data: Daily mean flow (m³/s) to 7 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: 0.13 mASD (EA at 9 Oct 21:15)
  • 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

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

💧 Storm overflows upstream of this gauge

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 River Lyner (S) · 4.3 km away in a straight line · several watercourses close by, nothing to choose between them
26 spills · 399 hours in 2025
Not discharging now · last
💧
South West Water · into Tributary Of Mill Leat · 4.8 km away in a straight line · no mapped watercourse close enough to be sure
0 spills · 0 hours in 2025
Not discharging now · last
💧
South West Water · into Peneont Water (S) · 5.3 km away in a straight line · several watercourses close by, nothing to choose between them
25 spills · 433 hours in 2025
Not discharging now · last
💧
South West Water · into East Looe River (S) · 5.6 km away in a straight line · its watercourse is not on the river map
0 spills · 0 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 →

Contains OS data © Crown copyright and database rights 2026.

Rainfall & Weather

Loading rainfall and weather data...

How often this river runs high

In a typical year this gauge reaches its typical high of 1.50 m on about 1 day. This year so far: 0 days.

2026 0 days so far
2025 2 days
2024 1 day
2023 1 day
2022 0 days
2021 0 days
2020 1 day
2019 0 days
2018 0 days
2017 1 day

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 2006 for the 2 flood areas linked to this gauge (nearest 6.3 km away).

36flood warnings 121flood alerts

Most recent flood warning: 27 Jan 2026 — River Lynher from Berriowbridge to Notter Bridge

Year by year
YearWarningsAlerts
2026 1 2
2025 2 7
2024 0 11
2023 2 10
2022 0 3
2021 0 5
2020 4 6
2019 1 7
2018 2 6
2017 0 1
2016 8 7
2015 2 5
2014 9 9
2013 1 8
2012 2 13
2011 0 7
2010 0 2
2009 1 3
2008 1 4
2007 0 3
2006 0 2

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 Trebartha flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 2 areas linked to this gauge, nearest first.

Catchment Character

🌊 Fairly flashy Responds fairly quickly to rain, with moderate baseflow between events.

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
0.37
mixed response
Avg Annual Rainfall
1,678 mm/yr
1991–2020 · -6% since 1941–70
Urban Extent
0.0%
largely rural
Median Annual Flood
9.97 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
7.63 m³/s
9 Jul 2008 · daily mean, not the instantaneous peak
Flow-Duration Curve
mean 0.5661.720.3630.0825% (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 16%Grassland 77%Heath/scrub 6%Other 1%
Woodland 27% → 16% since 1990

Flow affected by: public water supply.

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 associated climate station and footbridge.

More detail

The catchment

The small catchment drains eastwards from Bodmin Moor and northwards from Craddock Moorland. Catchment of moderate relief, entirely upon the granite of Bodmin Moor, with three main tributaries flowing in distinct valleys. Land cover is widespread peat; main valley broad and marshy. Nearly a quarter of the catchment is forested. It is virtually uninhabited. No major changes apart from afforestation.

The station

Three-bay compound Crump profile weir, crest lengths 0.91m and 2.54m (total). Crest replaced 03/2000. Affected by subsidence post-1990 (unquantified). Associated climate station. Footbridge over the weir. Residual flow gauge for associated major public water supply abstraction.

How it measures flow

Downstream weed growth and siltation affects low flows. Poor site for high flows: only possible to gauge up to pier height, which is lower than the mean annual flood. ToF ultrasonic added for medium and high flows but this has also proved problematic. Bypassed on right bank when out-of-bank. Two peak flow ratings across period of record, RC3 covers the complete period of record, except for a period in 2017/18 when weir became non modular throughout range due to backing up caused by downstream channel conditions (RC4).

Flow regime

Runoff reduced by major public water supply abstraction. Occasional substantial diversions into the catchment from Sibleyback Reservoir.

The flow record

Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).

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
Gauging structure
Operating since
1972
Station datum
228.7 mAOD
Flow record
1972–2024 · 52 yrs · 100% complete
Peak-flow record
since 1972
Hydrometric area
47
Measured by
Environment Agency

Frequently asked questions

Is the Withy Brook at Bastreet flooding today?

The current level is 0.13m, which is within the typical range of 0.13 to 1.50m. Flooding is unlikely at this level.

Is the river level rising or falling at Bastreet?

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 Withy Brook at Bastreet?

The typical range at this station is 0.13m to 1.50m, based on Environment Agency historical data. Levels above 1.50m 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 →