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Thornton Lock water level

River gauge, Bielby Beck, East Riding of Yorkshire, United Kingdom

Directions

Right now

Normal for mid-October

Water level

0.11m Steady over the last 24 hours

0.0 0.5 1.0 Highest onrecord 1.19 m Lowest on record 0.04 m

History

History
0.100.150.200.25mOct 13Oct 15Oct 17Oct 18Oct 20Bottom of normal range0.100.150.200.25mOct 13Oct 17Oct 20Bottom of normal range
0.20.4mSep 20Sep 28Oct 5Oct 13Oct 20Top of normal rangeBottom of normal range0.20.4mSep 20Oct 5Oct 20Top of normal rangeBottom of normal range
-0.00.30.50.8mOct 2025Jan 2026Apr 2026Jul 2026Oct 2026Top of normal rangeBottom of normal range-0.00.30.50.8mOct 2025Apr 2026Oct 2026Top of normal rangeBottom of normal range
-0.00.30.50.8mJanMarMayJulSepNov2026-0.00.30.50.8mJanAprJulOct2026

20252026

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

What this means

Bielby Beck at Thornton Lock is at 0.11 m, in the normal range for mid-October.

The median for mid-October is 0.13 m, based on 21 years of readings, so the river level is 0.02 m below typical. On the same day last year the reading was 0.09 m, a difference of +0.02 m.

It has barely moved over the past 24 hours. In the last month it has stayed between 0.07 m and 0.13 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
0.13 m0.02 m below the median for this date
Normal for this date
0.09 m – 0.24 m8 years in 10 fall in this range (21 years of records)
Normal range
0.09 m – 0.45 m
Same day last year
0.09 m+0.02 m
Lowest and highest in 30 days
0.07 m – 0.13 m
Lowest and highest in 12 months
0.05 m – 0.80 m
Highest on record
1.19 mApril 18, 2004
Lowest on record
0.04 mAugust 31, 1991

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.

Weather at the gauge

Rain in the last 3 days: 3.7 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 13° 6° 0.4 mm Wind 18 km/h
19 Mon 15° 9° 4.9 mm, 86% Wind 18 km/h
20 Tue 12° 10° 7.4 mm, 45% Wind 19 km/h
21 Wed 12° 6° 4.0 mm, 61% Wind 21 km/h
22 Thu 12° 4° 2.1 mm, 26% Wind 18 km/h
23 Fri 8° 5° 3.0 mm, 61% Wind 25 km/h
24 Sat 11° 3° – Wind 32 km/h

Forecast: Open-Meteo

Sunrise 07:41 AM Sunset 05:57 PM Daylight 10 hr, 17 min Waxing gibbous 69%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Sandhill BridgeRiver gauge, Blackfoss Beck 0.09 m Very low ±0 4.6 km
Elvington SluicesRiver gauge, River Derwent 5.87 m Normal +0.07 m 6.4 km
PocklingtonRiver gauge, Pocklington Beck −0.01 m Lowest on record ±0 6.6 km
Elvington Pumping StationRiver gauge, Elvington Beck 3.98 m Normal −0.02 m 6.6 km
Holme House FarmRiver gauge, River Foulness 0.13 m Low +0.01 m 7.4 km
Bubwith BridgeRiver gauge, River Derwent 2.61 m Normal −0.01 m 9.6 km
Welham BridgeRiver gauge, River Foulness 0.50 m Very high +0.01 m 11 km
Market WeightonRiver gauge, Mill Beck 0.01 m Very low −0.01 m 12 km

Questions and answers

Is Bielby Beck at Thornton Lock higher than last year?

Yes, it is 0.02 m higher than on the same day last year, when the reading was 0.09 m.

What is a normal level for Bielby Beck at Thornton Lock in mid-October?

The median for mid-October is 0.13 m. In 8 years out of 10 the reading falls between 0.09 m and 0.24 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 0.11 m on the gauge does not mean the water is that deep.

What is the water level of Thornton Lock today?

On 20 Oct 2026, 17:00 BST, the water level was 0.11 m. Steady over the last 24 hours.

Is Thornton Lock rising or falling?

Steady over the last 24 hours. Up 0.02 m over the last 7 days.

Is the level of Thornton 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 Thornton Lock?

The highest level on record is 1.19 m on April 18, 2004. The lowest is 0.04 m on August 31, 1991.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
Environment Agency
Station code
ea:F2830 (Agency page)
Coordinates
53.89046, -0.84407 (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 0.11 m 2026-10-20 16:00 Provisional

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How to cite

Environment Agency: Thornton Lock (ea:F2830). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-kingdom/east-riding-of-yorkshire/thornton-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.