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You'll be notified when this gauge is rising more than 0.10 mASD/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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EA/SEPA data and are best-efforts. Terms
Current Level
0.037 mASD
▬ Steady
24h Max
0.037 mASD
24h Min
0.027 mASD
Typical Range
0.13 - 0.41
mASD
Highest Recorded
1.29 mASD
EA official record
1.24 in our data (since Oct 1990)
Current level is 3% of this
🚽Sewage overflows nearby
Recent Water Levels
🌍 floodradar.co.uk
1 day
Flood predictions aren't generated for
lock / structure gauges —
their levels are driven by gate operation,
not by catchment rainfall, so the forecast models would have no skill here.
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.
Long Term
🌍 floodradar.co.uk
—
Consecutive rainy days0 → 10+
Days Above Normal
This year vs 5-year monthly range
Recent Readings
Rising · +0.7 cm over 6h
24 Aug 00:00▲ +0.3 cm0.037 mASD
23 Aug 23:45▲ +0.3 cm0.034 mASD
23 Aug 23:30▬ steady0.031 mASD
23 Aug 23:15▬ steady0.031 mASD
23 Aug 23:00▬ steady0.031 mASD
23 Aug 22:45▬ steady0.031 mASD
23 Aug 21:30▬ steady0.031 mASD
23 Aug 21:15▬ steady0.031 mASD
23 Aug 21:00▲ +0.1 cm0.031 mASD
23 Aug 20:45▬ steady0.030 mASD
23 Aug 20:30▬ steady0.030 mASD
23 Aug 20:15▬ steady0.030 mASD
23 Aug 20:00▬ steady0.030 mASD
23 Aug 19:45▬ steady0.030 mASD
23 Aug 19:30▬ steady0.030 mASD
23 Aug 19:15▬ steady0.030 mASD
23 Aug 19:00▬ steady0.030 mASD
23 Aug 18:45▬ steady0.030 mASD
23 Aug 18:30▬ steady0.030 mASD
23 Aug 18:150.030 mASD
Rainfall & Weather
Loading rainfall and weather data...
Flood history near this gauge
Official Environment Agency warnings issued since 2011 for the 8 flood
areas linked to this gauge (nearest 1.8 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 Three Elms flood history.
Geographic coordinates may reflect the access point for the gauge, and not the precise location in the watercourse that it is taking readings from.
Catchment Character
🌊 Mixed responseA 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
0.55
mixed response
Avg Annual Rainfall
729 mm/yr
1991–2020 · -2% since 1941–70
Urban Extent
1.5%
largely rural
Highest Recorded Flow
4.70 m³/s
16 Feb 2020
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.
A Flat V weir, however record is known to be unreliable in parts, and can experience zero flows during summer.
More detail
The catchment
Low relief catchment containing urban development of western Hereford. Some light industry but land use is mostly arable agriculture developed on Old Red Sandstone marls; extensively covered with glacial sands and gravel, which maintain baseflow in the Yazor Brk.
The station
Flat V weir, theoretically rated, replaced, in 1999, non-standard Flat V Crump (1:5 cross-slopes, 2.5m wide).
Flow regime
Zero flows experienced during summer months. Affected by industrial abstractions from groundwater, which can dominate flow pattern at low flows.
The flow record
Flow record unreliable. Gravel accretion causes rating variability, checked by c/m. Floods contained.
How this gauging station is built and how long it has measured (NRFA / UKCEH).
Gauge type
Flat-V weir
Operating since
1972
Station datum
57.9 mAOD
Flow record
1973–2024 · 51 yrs · 97% complete
Hydrometric area
55
Measured by
Environment Agency
Nearby Groundwater
Soil Moisture
🚽 Storm overflows on this river
Frequently asked questions
Is the Yazor Brook at Three Elms flooding today?
The current level is 0.04m, which is below the typical range. Flooding is very unlikely at this level.
Is the river level rising or falling at Three Elms?
Based on the most recent readings, the level is currently steady. The chart above shows the last 7 days of measurements, updated roughly every 15 minutes.
What is a normal level for the Yazor Brook at Three Elms?
The typical range at this station is 0.13m to 0.41m, based on Environment Agency historical data. Levels above 0.41m are higher than usually seen and may indicate a flood risk.
How often is this river level data updated?
Readings are taken by the Environment Agency gauge roughly every 15 minutes and FloodRadar refreshes its data continuously, so the level shown is normally less than an hour old.
Embed this gauge on your website
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:
