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⤴Unusual rise — FloodRadar+Top 1% rise rate for this gauge.
Height for "Above a height"
Drag the line on the chart, or type a value:mASD
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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.
Get notified when recent rainfall near this gauge crosses its learnt rise trigger — an early "watch"
signal, typically hours before a rise. Experimental; not an official flood warning.
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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
0.348 mASD
▲ Rising slightly
24h Max
0.362 mASD
24h Min
0.273 mASD
Typical Range
0.09 - 1.27
mASD
Highest Recorded
2.10 mASD
EA official record
1.87 in our data (since Oct 1979)
Current level is 17% 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 6 Oct (2 days behind — the EA publishes each day's mean a day or two after it ends; unchecked, provisional)via EA Hydrology
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.
5 storm overflows are traced upstream of this gauge, the nearest 3.0 km away along the river. 0 report discharging now, 5 report not discharging.
Anglian Water · into River Brain Nt · 5.9 km away in a straight line · not connected to this gauge on the river map
2 spills · 17 hours in 2025
Not discharging now · last
1 more within 6 km whose connection is not known.
1 other overflow within 6 km is downstream of this gauge or on another branch of the river network, so it is 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 Stisted 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.
🌊 Fairly flashyResponds 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
0.49
mixed response
Avg Annual Rainfall
619 mm/yr
1991–2020 · +2% since 1941–70
Urban Extent
2.6%
largely rural
Median Annual Flood
14.30 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
30.70 m³/s
21 Oct 2001 · 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.
'Essex' profile gauging a predominantly Chalk catchment affected by artificial influences including urban runoff and Ely Ouse/Essex scheme.
More detail
The catchment
Upper two-thirds of catchment are Chalk, remainder London Clay (exposed in valleys), all overlain with Boulder Clay and some glacial gravel. Mainly rural (arable predominates) but with Braintree urban area in lower valley, just u/s of station.
The station
'Essex' profile (modified Flat V Crump) weir with crest tapping. No spillway.
How it measures flow
Modest modular limit (around 0.62m) affected by weed growth. No spillway. VA rating for high flows. One peak flow rating applied across period of record. Some of the gaugings were based on float-runs and may not be reliable. Post-1979, flow is derived through the rating curve and then under non-modular conditions, a macro is applied within WISKI which applies a reduction factor. Therefore, under high flows, the stage and flow will not match through the modular rating. In the earlier record, however, adjustment for non-modularity appears to have been made by correcting the artifical elevation of stage, and these events therefore agree through the rating.
Flow regime
Urban runoff from Braintree. Minor adjustments needed for ground and surface water abstractions, sewage and industrial effluent and Ely Ouse/Essex discharges. Net effect - minor export of water.
The flow record
No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. Flows can be artificially increased by Ely Ouse transfer scheme (e.g. June 2015). Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).
Timing, not cause. Gauges can move together simply because the same rain fell on both.
Frequently asked questions
Is the River Blackwater at Stisted flooding today?
The current level is 0.35m, which is within the typical range of 0.09 to 1.27m. Flooding is unlikely at this level.
Is the river level rising or falling at Stisted?
Based on the most recent readings, the level is currently rising slightly. 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 Blackwater at Stisted?
The typical range at this station is 0.09m to 1.27m, based on Environment Agency historical data. Levels above 1.27m 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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25 Sep 2017 Looking downstream in normal conditions
4 Jan 2007 Weir in normal conditions
24 Aug 2001
21 Aug 2001 View across weir from lb
21 Aug 2001 Structure from d/s