Sonning Lock water level

What this means

High water at Sonning Lock: the latest reading is 0.24 m, well above normal for mid-October.

That puts it 0.10 m above the median of 0.13 m for mid-October, based on 21 years of readings. A year ago it stood at 0.12 m (+0.11 m). The record high is 1.05 m, set on January 5, 2003.

It is on the way up, by 0.01 m over the past 24 hours. If the rise continues, low-lying paths and riverside parking can go under water. The 30-day range is 0.17 m – 0.28 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 m0.10 m above the median for this date

Normal for this date

0.07 m – 0.19 m8 years in 10 fall in this range (21 years of records)

Normal range

0.07 m – 0.26 m

Same day last year

0.12 m+0.11 m

Lowest and highest in 30 days

0.17 m – 0.28 m

Lowest and highest in 12 months

−0.15 m – 0.57 m

Highest on record

1.05 mJanuary 5, 2003

Lowest on record

−0.10 mJuly 23, 2003