Trowlock Island water level

What this means

At 4.35 m, the River Thames at Trowlock Island is far below normal for mid-October.

The median for mid-October is 4.55 m, based on 21 years of readings, so the river level is 0.20 m below typical. On the same day last year the reading was 4.47 m, a difference of −0.11 m.

The water is rising: up 0.04 m over the past 24 hours. Over the past 30 days it has moved between 4.30 m and 4.35 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

4.55 m0.20 m below the median for this date

Normal for this date

4.49 m – 4.67 m8 years in 10 fall in this range (21 years of records)

Same day last year

4.47 m−0.11 m

Lowest and highest in 30 days

4.30 m – 4.35 m

Lowest and highest in 12 months

4.20 m – 4.93 m