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Whitwell water level

River gauge, River Mimram, Hertfordshire, United Kingdom

Directions

Right now

Normal for mid-October

Water level

0.06m Steady over the last 24 hours

0.0 0.3 0.5 Highest onrecord 0.28 m Lowest on record -0.11 m

History

History
0.020.040.060.08mOct 12Oct 13Oct 15Oct 17Oct 19Bottom of normal range0.020.040.060.08mOct 12Oct 15Oct 19Bottom of normal range
0.020.040.060.08mSep 19Sep 26Oct 4Oct 11Oct 19Bottom of normal range0.020.040.060.08mSep 19Oct 4Oct 19Bottom of normal range
0.050.100.15mOct 2025Jan 2026Apr 2026Jul 2026Oct 2026Bottom of normal range0.050.100.15mOct 2025Apr 2026Oct 2026Bottom of normal range
0.050.100.15mJanMarMayJulSepNov20260.050.100.15mJanAprJulOct2026

20252026

Water level Normal range (10–90 %) Top of normal rangeBottom of normal range

What this means

The River Mimram at Whitwell is at 0.06 m, in the normal range for mid-October.

That puts it 0.01 m below the median of 0.06 m for mid-October, based on 21 years of readings. A year ago it stood at 0.07 m (−0.02 m).

The level has held steady over the past 24 hours. In the last month it has stayed between 0.05 m and 0.06 m.

Autumn rain usually starts to lift rivers again after the summer low.

Compared with 21 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
0.06 m0.01 m below the median for this date
Normal for this date
0.03 m – 0.08 m8 years in 10 fall in this range (21 years of records)
Normal range
0.02 m – 0.50 m
Same day last year
0.07 m−0.02 m
Lowest and highest in 30 days
0.05 m – 0.06 m
Lowest and highest in 12 months
0.05 m – 0.10 m
Highest on record
0.28 mFebruary 12, 2001
Lowest on record
−0.11 mNovember 1, 1997

Fishing and paddling

Paddlers and anglers can expect the river much as they know it, though a heavy shower upstream can change that within hours.

Flood alerts and warnings come from the Environment Agency.

About the River Mimram

River Mimram

The River Mimram is a chalk stream in Hertfordshire, England. It runs from its source near Whitwell in Hertfordshire to join the River Lea at Hertford.

Read more on Wikipedia

Text and image from Wikipedia and Wikimedia Commons, licensed under CC BY-SA.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:33 AM Sunset 06:01 PM Daylight 10 hr, 28 min First quarter 55%

Map

Other gauges on the River Mimram

Gauge Level Compared with normal 24 hours Distance
Fulling MillRiver gauge, River Mimram 0.07 m Normal ±0 6.0 km
PanshangerRiver gauge, River Mimram 0.42 m Normal +0.02 m 13 km

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
HarpendenRiver gauge, River Lee 0.79 m Low +0.03 m 6.9 km
Luton East HydeRiver gauge, River Lee 1.10 m Normal ±0 7.1 km
Bragbury ParkRiver gauge, Stevenage Brook 0.15 m Normal +0.11 m 9.1 km
Luton, Stockingstone RoadRiver gauge, River Lee 0.03 m Low ±0 9.7 km
WalkernRiver gauge, River Beane 0.10 m Normal +0.01 m 12 km
RedbournRiver gauge, River Ver 0.04 m Normal +0.01 m 12 km
RedbournRiver gauge, River Red 0.05 m Normal +0.35 m 12 km
Luton, Toddington RoadRiver gauge, River Lee 0.00 m Normal +0.02 m 13 km

Questions and answers

How does the River Mimram at Whitwell compare with last year?

It is 0.02 m lower than on the same day last year, when the reading was 0.07 m.

What is a normal level for the River Mimram at Whitwell in mid-October?

The median for mid-October is 0.06 m. In 8 years out of 10 the reading falls between 0.03 m and 0.08 m, based on 21 years of records.

Is the river level the same as the depth of the water?

No. The reading is measured from a fixed zero mark at the gauge, so 0.06 m on the gauge does not mean the water is that deep.

What is the water level of Whitwell today?

On 19 Oct 2026, 04:15 BST, the water level was 0.06 m. Steady over the last 24 hours.

Is Whitwell rising or falling?

Steady over the last 24 hours. Steady over the last 7 days.

Is the level of Whitwell normal?

Normal for mid-October. Compared with 21 years of daily readings for this time of year.

What is the highest water level ever recorded at Whitwell?

The highest level on record is 0.28 m on February 12, 2001. The lowest is −0.11 m on November 1, 1997.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
Environment Agency
Station code
ea:4730TH (Agency page)
Coordinates
51.87689, -0.28128 (WGS84)
Vertical datum
station datum
Update interval
every 15 minutes
Licence
Open Government Licence v3.0. Contains Environment Agency data licensed under the Open Government Licence v3.0

Published series

ParameterLast valueTime (UTC)Quality
Water level 0.06 m 2026-10-19 03:15 Provisional

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How to cite

Environment Agency: Whitwell (ea:4730TH). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-kingdom/hertfordshire/whitwell

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.