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0.14

Ashbourne

Henmore Brook
Dove catchment • Ashbourne • Derbyshire • ID: 4058 • Level
(24m ago) • 4 readings/hr • 317 views

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1 person already gets alerts for this gauge.

⤴ Unusual rise — FloodRadar+Top 1% rise rate for this gauge.
Drag the line on the chart, or type a value: mASD
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Residents reported flooding nearby when this gauge read ≥ 0.75 mASD (4 reports, nearest 9.7 km) — reported by FloodRadar users, not surveyed by the Environment Agency; a report is not proof any one property flooded.

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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
0.144 mASD
▬ Steady
24h Max
0.161 mASD
24h Min
0.143 mASD
Typical Range
0.15 - 0.35
mASD
Highest Recorded
1.96 mASD
EA official record
0.96 in our data (since Jan 1974)
Current level is 7% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Steady over 5h
08 Oct 10:15 ▲ +0.1 cm 0.144 mASD
08 Oct 10:00 ▼ -0.1 cm 0.143 mASD
08 Oct 09:45 ▬ steady 0.144 mASD
08 Oct 09:30 ▬ steady 0.144 mASD
08 Oct 09:00 ▬ steady 0.144 mASD
08 Oct 08:45 ▬ steady 0.144 mASD
08 Oct 08:30 ▬ steady 0.144 mASD
08 Oct 08:00 ▼ -0.1 cm 0.144 mASD
08 Oct 07:45 ▲ +0.1 cm 0.145 mASD
08 Oct 07:30 ▼ -0.1 cm 0.144 mASD
08 Oct 07:15 ▬ steady 0.145 mASD
08 Oct 07:00 ▲ +0.1 cm 0.145 mASD
08 Oct 06:45 ▼ -0.1 cm 0.144 mASD
08 Oct 06:30 ▬ steady 0.145 mASD
08 Oct 06:15 ▬ steady 0.145 mASD
08 Oct 06:00 ▼ -0.1 cm 0.145 mASD
08 Oct 05:45 ▬ steady 0.146 mASD
08 Oct 05:30 ▬ steady 0.146 mASD
08 Oct 05:15 ▲ +0.1 cm 0.146 mASD
08 Oct 05:00 0.145 mASD

Station Details

  • Monitoring Station: Ashbourne
  • Watercourse: Henmore Brook
  • Nearest Town: Ashbourne
  • County: Derbyshire
  • Nearest reservoir: Carsington (8.9 km) · 63.7% full (as of 5 Oct 2026)
  • Coordinates: 53°0'50"N 1°44'20"W (53.013888, -1.738962)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 31 Jan 1974
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: 4058
  • RLOI id: 2126 (the EA's check-for-flooding station id)
  • EA Gauge ID: 4058-level-stage-i-15_min-mASD
  • Parameter: Level
  • Unit: mASD
  • Typical rise rate: 1 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: Dove
  • Typical Range: 0.147 – 0.351 mASD
  • Drainage Area: 38 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: 0.14 mASD (EA at 8 Oct 09:45)
  • 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 upstream

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

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.

2 storm overflows are traced upstream of this gauge, the nearest 7.6 km away along the river. 0 report discharging now, 2 report not discharging.

💧
Severn Trent Water · into Kniveton Brook · 7.6 km upstream along the river
84 spills · 995 hours in 2025
Not discharging now · last
💧
Severn Trent Water · into Henmore Brook · 9.1 km upstream along the river
61 spills · 667 hours in 2025
Not discharging now · last

Nearby, connection not known

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

💧
Severn Trent Water · into Henmore/Scow Brook · 1.6 km away in a straight line · no mapped watercourse close enough to be sure
0 spills · 0 hours in 2025
Not discharging now
💧
Severn Trent Water · into Unnamed Ditch Draining To Henmore Brook · 1.9 km away in a straight line · no mapped watercourse close enough to be sure
15 spills · 160 hours in 2025
Not discharging now · last
💧
Severn Trent Water · into Tributary Of Henmore Brook · 1.9 km away in a straight line · no mapped watercourse close enough to be sure
27 spills · 167 hours in 2025
Not discharging now · last
💧
Severn Trent Water · into Trib Of Shirley Brook · 3.4 km away in a straight line · its watercourse is not on the river map
16 spills · 64 hours in 2025
Not discharging now · last
💧
Severn Trent Water · into Thorpe Brook (River Dove) · 4.2 km away in a straight line · no mapped watercourse close enough to be sure
19 spills · 108 hours in 2025
Not discharging now · last

9 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 0.35 m on about 45 days. This year so far: 35 days.

2026 35 days, 1 of them high · 1 high so far
2025 37 days, 4 of them high · 4 high
2024 55 days, 7 of them high · 7 high
2023 67 days, 7 of them high · 7 high
2022 35 days, 3 of them high · 3 high
2021 52 days, 5 of them high · 5 high
2020 44 days, 6 of them high · 6 high
2019 60 days, 5 of them high · 5 high
2018 36 days, 4 of them high · 4 high
2017 21 days

Counted from each day's highest reading. Days with missing or implausible readings are left out. The darker part is days above 0.79 m, the level this gauge tops only a few days a year.

Flood history near this gauge

Official Environment Agency warnings issued since 2006 for the 5 flood areas linked to this gauge (nearest 0.5 km away).

21flood warnings 120flood alerts

Most recent flood warning: 27 Aug 2026 — Henmore Brook at Ashbourne

Year by year
YearWarningsAlerts
2026 4 9
2025 0 12
2024 4 16
2023 4 11
2022 1 6
2021 0 6
2020 5 7
2019 0 10
2018 0 4
2017 0 1
2016 2 5
2015 0 4
2014 0 2
2013 0 5
2012 0 9
2011 0 1
2010 0 1
2009 0 1
2008 1 6
2007 0 3
2006 0 1

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 Ashbourne flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 5 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
0.45
mixed response
Avg Annual Rainfall
953 mm/yr
1991–2020 · +9% since 1941–70
Urban Extent
2.1%
largely rural
Median Annual Flood
10.60 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
9.50 m³/s
20 Oct 2023 · daily mean, not the instantaneous peak
Flow-Duration Curve
mean 0.4331.370.2430.0805% (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 5%Grassland 81%Arable 1%Urban 5%Other 8%
Grassland 89% → 81% since 1990

Flow affected by: surface-water abstraction, 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

Crump profile Flat V weir within vertical wing walls - station closed between 1984 and 1993.

More detail

The catchment

Catchment of moderate relief in South Pennines, draining Drift free Millstone Grit and Carboniferous Limestone. Predominantly forest and pasture, some moorland. Pre-reservoir FARL2015 (for WINFAP 5.3 or later) or FARL (for earlier versions of WINFAP) should be used with these records because the peak flow data after the reservoir started impounding is rejected. Pre- and post-reservoir values for FARL2015 are 0.966 and 0.7447, respectively. Pre-reservoir value for FARL is 0.977, while post-reservoir cannot be calculated from the original FARL water layer.

The station

Crump profile Flat V weir, 6.0m wide, within vertical wing walls. Right bank approach built up into low floodbank. Modular limit high, but no arrangements to deal with non-modular discharge. Contains Carsington pump storage reservoir - impounded from September 1991. Station closed between 1984 and 1993. Peak flow data are for record before Carsington Reservoir. Fish baffles added to the downstream weir face in March 2021.

How it measures flow

Single rating applied across the period of record. This accounts for non-modular flow due to the high modular limit of the station. Station closed between 1984 and 1993. Remote controlled ADCP gaugings carried out within weir wing walls or a few metres upstream of the weir, across the flow range.

Flow regime

Responsive catchment affected by Carsington pump storage reservoir.

The flow record

Impounded from September 1991, and post-reservoir data marked as rejected. Rating reviewed in 2022 and data reprocessed from full period of record. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).

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
Flat-V weir
Operating since
1974
Station datum
116.4 mAOD
Flow record
1974–2024 · 50 yrs · 86% complete
Peak-flow record
since 1974
Hydrometric area
28
Measured by
Environment Agency

Frequently asked questions

Is the Henmore Brook at Ashbourne flooding today?

The current level is 0.14m, which is below the typical range. Flooding is very unlikely at this level.

Is the river level rising or falling at Ashbourne?

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 Henmore Brook at Ashbourne?

The typical range at this station is 0.15m to 0.35m, based on Environment Agency historical data. Levels above 0.35m 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 →