Grand River near Thunder Hawk water level

What this means

Water levels are unremarkable at Grand River near Thunder Hawk, where the gauge shows 5.07 ft.

The median for mid-October is 4.99 ft, based on 6 years of readings, so the river stage is 0.08 ft above typical. On the same day last year the reading was 5.15 ft, a difference of −0.08 ft.

It has barely moved over the past 24 hours. The 30-day range is 5.01 ft – 5.87 ft.

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

Compared with 6 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date

4.99 ft0.08 ft above the median for this date

Normal for this date

4.89 ft – 5.35 ft8 years in 10 fall in this range (6 years of records)

Same day last year

5.15 ft−0.08 ft

Lowest and highest in 30 days

5.01 ft – 5.87 ft

Lowest and highest in 12 months

4.96 ft – 7.00 ft

Highest on record

10.76 ftAugust 17, 2025