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Mapledurham Lock water level

River gauge, River Thames, Oxfordshire, United Kingdom

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Right now

Normal for mid-October

Water level

0.07m Steady over the last 24 hours

0.0 0.5 Highest onrecord 0.85 m Lowest on record -0.34 m

History

History
0.050.100.15mOct 16Oct 16Oct 17Oct 17Oct 18Bottom of normal range0.050.100.15mOct 16Oct 17Oct 18Bottom of normal range
-0.00.20.4mOct 2025Jan 2026Apr 2026Jul 2026Oct 2026Top of normal rangeBottom of normal range-0.00.20.4mOct 2025Apr 2026Oct 2026Top of normal rangeBottom of normal range
-0.00.20.4mJanMarMayJulSepNov2026-0.00.20.4mJanAprJulOct2026

20252026

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

What this means

The gauge at Mapledurham Lock reads 0.07 m, a normal level for mid-October.

That puts it 0.01 m below the median of 0.08 m for mid-October, based on 21 years of readings. A year ago it stood at 0.06 m (+0.01 m).

The level has held steady over the past 24 hours. Over the past 30 days it has moved between 0.05 m and 0.07 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
0.08 m0.01 m below the median for this date
Normal for this date
0.04 m – 0.15 m8 years in 10 fall in this range (21 years of records)
Normal range
0.02 m – 0.30 m
Same day last year
0.06 m+0.01 m
Lowest and highest in 30 days
0.05 m – 0.07 m
Lowest and highest in 12 months
−0.02 m – 0.45 m
Highest on record
0.85 mJanuary 7, 2024
Lowest on record
−0.34 mFebruary 21, 2001

On the river at Mapledurham Lock

A level in the typical range is usually good news for both anglers and canoeists, but conditions can change quickly after rain in the hills.

Flood warnings for the area come from the Environment Agency.

About the River Thames

River Thames

The River Thames, or simply the Thames, known alternatively in parts as the River Isis, is a river that flows through southern England including London. At 215 miles (346 km), it is the longest river entirely in England and the second-longest in the United Kingdom, after the River Severn.

Read more on Wikipedia

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

Weather at the gauge

Rain in the last 3 days: 2.1 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 13° 7° 0.8 mm, 74% Wind 21 km/h
19 Mon 15° 9° 2.4 mm, 90% Wind 18 km/h
20 Tue 12° 9° 11 mm, 67% Wind 9 km/h
21 Wed 14° 7° 4.2 mm, 44% Wind 27 km/h
22 Thu 14° 5° 1.2 mm, 61% Wind 16 km/h
23 Fri 10° 7° 36 mm, 77% Wind 35 km/h
24 Sat 10° 3° – Wind 25 km/h

Forecast: Open-Meteo

Sunrise 07:33 AM Sunset 06:07 PM Daylight 10 hr, 33 min First quarter 47%

Map

Other gauges on the River Thames

Gauge Level Compared with normal 24 hours Distance
Whitchurch LockRiver gauge, River Thames 0.02 m Very low ±0 3.4 km
ReadingRiver gauge, River Thames 6.69 m Normal ±0 5.7 km
Caversham LockRiver gauge, River Thames 0.14 m Low +0.01 m 6.0 km
Goring LockRiver gauge, River Thames 0.00 m Very low ±0 8.2 km
Cleeve LockRiver gauge, River Thames 0.14 m Very high ±0 8.3 km
Sonning LockRiver gauge, River Thames 0.23 m Very high ±0 8.6 km
Shiplake LockRiver gauge, River Thames 0.03 m Very low +0.01 m 11 km
Marsh LockRiver gauge, River Thames 0.23 m Normal +0.01 m 12 km
Hambleden LockRiver gauge, River Thames 0.09 m Normal ±0 14 km
Benson LockRiver gauge, River Thames 0.01 m Very low ±0 16 km
Hurley LockRiver gauge, River Thames 0.05 m Low ±0 18 km
Temple LockRiver gauge, River Thames 0.03 m Low ±0 19 km

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
PangbourneRiver gauge, River Pang 0.13 m Normal ±0 3.3 km
SulhamRiver gauge, Sulham Brook 0.03 m Very low ±0 3.7 km
TidmarshRiver gauge, River Pang 1.23 m High +0.02 m 3.7 km
Reading Calcot BridgeRiver gauge, River Kennet 1.81 m Low −0.01 m 5.8 km
Blakes LockRiver gauge, River Kennet 0.06 m Low ±0 6.8 km

Questions and answers

How does the River Thames at Mapledurham Lock compare with last year?

It is 0.01 m higher than on the same day last year, when the reading was 0.06 m.

What is a normal level for the River Thames at Mapledurham Lock in mid-October?

The median for mid-October is 0.08 m. In 8 years out of 10 the reading falls between 0.04 m and 0.15 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 0.07 m on the gauge does not mean the water is that deep.

What is the water level of Mapledurham Lock today?

On 18 Oct 2026, 07:00 BST, the water level was 0.07 m. Steady over the last 24 hours.

Is Mapledurham Lock rising or falling?

Steady over the last 24 hours.

Is the level of Mapledurham Lock 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 Mapledurham Lock?

The highest level on record is 0.85 m on January 7, 2024. The lowest is −0.34 m on February 21, 2001.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
Environment Agency
Station code
ea:2199TH (Agency page)
Coordinates
51.48603, -1.03965 (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 0.07 m 2026-10-18 06:00 Provisional

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How to cite

Environment Agency: Mapledurham Lock (ea:2199TH). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-kingdom/oxfordshire/mapledurham-lock

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.