Tolna Coulee near Tolna water level

What this means

At 15.46 ft, the Tolna Coulee near Tolna is far below normal for mid-October.

That puts it 1.41 ft below the median of 16.87 ft for mid-October, based on 14 years of readings. A year ago it stood at 15.58 ft (−0.12 ft).

The level has held steady over the past 24 hours. Without real rain upstream, that is unlikely to change quickly. Over the past 30 days it has moved between 15.41 ft and 15.72 ft.

Fall is often low-water season on rivers, and it usually takes a few days of steady rain to change that. The sensor also reports a water temperature of 46 °F.

Compared with 14 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date

16.87 ft1.41 ft below the median for this date

Normal for this date

15.50 ft – 17.42 ft8 years in 10 fall in this range (14 years of records)

Same day last year

15.58 ft−0.12 ft

Lowest and highest in 30 days

15.41 ft – 15.72 ft

Lowest and highest in 12 months

15.41 ft – 17.42 ft