Guildford Street water level

What this means

The Chertsey Bourne at Guildford Street is at 0.50 m, in the normal range for mid-October.

The median for mid-October is 0.46 m, based on 21 years of readings, so the river level is 0.04 m above typical. On the same day last year the reading was 0.46 m, a difference of +0.04 m.

It has barely moved over the past 24 hours. In the last month it has stayed between 0.42 m and 0.55 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

0.46 m0.04 m above the median for this date

Normal for this date

0.41 m – 0.57 m8 years in 10 fall in this range (21 years of records)

Normal range

0.30 m – 1.50 m

Same day last year

0.46 m+0.04 m

Lowest and highest in 30 days

0.42 m – 0.55 m

Lowest and highest in 12 months

0.45 m – 1.37 m

Highest on record

1.78 mJanuary 2, 2003

Lowest on record

0.28 mJune 18, 2004