Nottawasaga River near Alliston water level

What this means

Water levels are unremarkable at Nottawasaga River near Alliston, where the gauge shows 6.73 m.

The median for mid-October is 6.77 m, based on 21 years of readings, so the water level is 0.04 m below typical. On the same day last year the reading was 6.76 m, a difference of −0.02 m.

It is still going down, by 0.01 m over the past 24 hours. The 30-day range is 6.71 m – 6.81 m.

Fall is often low-water season on rivers, until steadier rain returns.

Compared with 21 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date

6.77 m0.04 m below the median for this date

Normal for this date

6.69 m – 6.90 m8 years in 10 fall in this range (21 years of records)

Same day last year

6.76 m−0.02 m

Lowest and highest in 30 days

6.71 m – 6.81 m

Lowest and highest in 12 months

6.72 m – 7.24 m